/* roulang page: index */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--accent-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-title);
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-primary);
            margin-bottom: 0.5em;
        }

        h1 {
            font-size: 36px;
        }

        h2 {
            font-size: 26px;
        }

        h3 {
            font-size: 22px;
        }

        h4 {
            font-size: 18px;
        }

        p {
            margin-bottom: 1em;
            color: var(--text-secondary);
        }

        .font-mono-num {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .text-accent-orange {
            color: var(--accent-orange);
        }
        .text-accent-cyan {
            color: var(--accent-cyan);
        }
        .text-accent-pink {
            color: var(--accent-pink);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }

        .bg-card {
            background-color: var(--bg-card);
        }
        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }
        .bg-secondary {
            background-color: var(--bg-secondary);
        }
        .bg-primary {
            background-color: var(--bg-primary);
        }

        .border-subtle {
            border: 1px solid var(--border-subtle);
        }
        .border-medium {
            border: 1px solid var(--border-medium);
        }

        .rounded-card {
            border-radius: var(--radius-md);
        }
        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }

        .shadow-card {
            box-shadow: var(--shadow-card);
        }

        .transition-base {
            transition: all 0.25s ease;
        }
        .transition-transform {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(13, 15, 18, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-orange), #FFB84D);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 900;
            color: #0D0F12;
        }
        .logo-text {
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 20px;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--accent-orange);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex: 1;
            justify-content: center;
            padding: 0 8px;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            white-space: nowrap;
            position: relative;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .nav-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            border-color: var(--accent-orange);
        }
        .nav-tab.active:hover {
            color: #0D0F12;
            background: var(--accent-orange);
        }
        .nav-tab .tab-sep {
            width: 1px;
            height: 16px;
            background: var(--border-medium);
            margin-left: 6px;
            display: none;
        }

        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn-primary {
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 6px;
        }

        @media (max-width: 768px) {
            .site-header .container {
                gap: 8px;
                flex-wrap: wrap;
                height: auto;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .logo-text {
                font-size: 17px;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 4px 0 6px;
                overflow-x: auto;
                gap: 2px;
            }
            .nav-tab {
                padding: 5px 10px;
                font-size: 13px;
            }
            .nav-cta .btn-primary {
                padding: 7px 16px;
                font-size: 13px;
            }
        }

        /* Section base */
        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-xs {
            padding: 36px 0;
        }

        .section-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.05em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 28px;
            color: #fff;
            margin-bottom: 8px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 700px;
            margin-bottom: 32px;
        }

        .title-underline {
            position: relative;
            display: inline-block;
            padding-bottom: 8px;
        }
        .title-underline::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
        }

        /* Hero */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: var(--nav-height);
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 15, 18, 0.78) 0%, rgba(13, 15, 18, 0.88) 40%, rgba(13, 15, 18, 0.95) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
        }

        .hero-title {
            font-size: 40px;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero-title .highlight-cyan {
            color: var(--accent-cyan);
        }
        .hero-title .highlight-orange {
            color: var(--accent-orange);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-kpi-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            max-width: 100%;
            margin-top: 24px;
        }
        .kpi-card {
            background: rgba(23, 26, 33, 0.85);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 18px;
            text-align: center;
            backdrop-filter: blur(6px);
            transition: all 0.3s ease;
        }
        .kpi-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 0 1px var(--border-glow), 0 10px 30px rgba(0, 0, 0, 0.4);
            transform: translateY(-2px);
        }
        .kpi-value {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .kpi-value .unit {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            letter-spacing: 0;
        }
        .kpi-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
            line-height: 1.4;
        }
        .kpi-trend {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 4px;
            margin-top: 6px;
        }
        .kpi-trend.up {
            color: var(--accent-cyan);
            background: rgba(20, 224, 200, 0.12);
        }
        .kpi-trend.hot {
            color: var(--accent-pink);
            background: rgba(255, 45, 120, 0.12);
        }

        @media (max-width: 1024px) {
            .hero-kpi-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .hero-title {
                font-size: 32px;
            }
        }
        @media (max-width: 640px) {
            .hero-kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .kpi-value {
                font-size: 20px;
            }
            .kpi-card {
                padding: 14px 12px;
            }
        }

        /* Brand intro section */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .brand-intro-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .brand-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .brand-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .brand-intro-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(13, 15, 18, 0.7), transparent);
            pointer-events: none;
        }

        @media (max-width: 768px) {
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .brand-intro-image img {
                aspect-ratio: 16/9;
            }
        }

        /* Service matrix */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            min-height: 180px;
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .service-card.wide {
            grid-column: span 2;
            flex-direction: row;
            align-items: center;
            gap: 24px;
            background: radial-gradient(ellipse at top left, rgba(255, 122, 0, 0.18), rgba(13, 15, 18, 0.95) 65%);
        }
        .service-card.wide .service-card-content {
            flex: 1;
        }
        .service-card.wide .service-card-image {
            flex-shrink: 0;
            width: 220px;
            height: 140px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .service-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-card-title {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .service-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .service-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
        .service-tag {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            white-space: nowrap;
        }
        .service-tag.highlight {
            color: var(--accent-orange);
            background: rgba(255, 122, 0, 0.1);
            border-color: rgba(255, 122, 0, 0.3);
        }
        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-orange);
            margin-top: auto;
        }
        .service-card-link .arrow {
            transition: transform 0.25s ease;
        }
        .service-card-link:hover .arrow {
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .service-matrix {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card.wide {
                grid-column: span 1;
                flex-direction: column;
                text-align: left;
            }
            .service-card.wide .service-card-image {
                width: 100%;
                height: 160px;
            }
        }

        /* Comparison section */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 14px;
        }
        .comparison-table th {
            background: rgba(255, 122, 0, 0.08);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.02em;
        }
        .comparison-table td {
            color: var(--text-secondary);
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .bar-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
            min-width: 100px;
        }
        .bar-fill {
            height: 100%;
            background: var(--accent-orange);
            border-radius: 4px;
        }
        .bar-fill.cyan {
            background: var(--accent-cyan);
        }

        @media (max-width: 640px) {
            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .bar-track {
                min-width: 60px;
            }
        }

        /* News cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .news-card.featured {
            grid-column: span 3;
            flex-direction: row;
        }
        .news-card.featured .news-card-image {
            width: 35%;
            flex-shrink: 0;
            min-height: 200px;
        }
        .news-card-image {
            width: 100%;
            height: 160px;
            overflow: hidden;
            position: relative;
        }
        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-card-image img {
            transform: scale(1.05);
        }
        .news-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-date {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            display: inline-block;
            padding: 3px 10px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 4px;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .news-card-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .news-card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }

        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card.featured {
                grid-column: span 1;
                flex-direction: column;
            }
            .news-card.featured .news-card-image {
                width: 100%;
                min-height: auto;
                height: 180px;
            }
            .news-card-image {
                height: 160px;
            }
        }

        /* Insight cards */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .insight-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border-left: 3px solid var(--accent-cyan);
            transition: all 0.3s ease;
        }
        .insight-card:hover {
            border-left-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
        }
        .insight-quote {
            font-size: 16px;
            color: var(--text-primary);
            line-height: 1.8;
            font-style: italic;
            margin-bottom: 12px;
        }
        .insight-author {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .insight-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* Guarantee section */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .guarantee-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .guarantee-item:hover {
            border-color: rgba(20, 224, 200, 0.4);
            box-shadow: 0 0 0 1px rgba(20, 224, 200, 0.4), 0 10px 30px rgba(0, 0, 0, 0.35);
        }
        .guarantee-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }
        .guarantee-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .guarantee-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }
        @media (max-width: 640px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Tier pricing */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }
        .tier-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
        }
        .tier-card:hover {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .tier-card.featured {
            border-color: var(--accent-orange);
            background: radial-gradient(ellipse at top, rgba(255, 122, 0, 0.12), var(--bg-card) 70%);
        }
        .tier-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-orange);
            color: #0D0F12;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .tier-name {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .tier-benefit {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .tier-cta {
            margin-top: 16px;
        }

        @media (max-width: 768px) {
            .tier-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-item.active {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 1px rgba(255, 122, 0, 0.2);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            text-align: left;
            gap: 12px;
            transition: all 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-orange);
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Form */
        .form-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            overflow: hidden;
        }
        .form-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 15px;
            transition: all 0.25s ease;
        }
        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 1px;
            border-color: var(--accent-orange);
        }
        .form-input::placeholder,
        .form-textarea::placeholder {
            color: var(--text-muted);
        }
        .form-select option {
            background: var(--bg-card);
            color: #fff;
        }
        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-incentive {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .form-incentive .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .form-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .form-card {
                padding: 24px;
            }
        }

        /* Footer CTA */
        .footer-cta {
            background: radial-gradient(ellipse at center, rgba(255, 122, 0, 0.15), var(--bg-primary) 70%);
            text-align: center;
            padding: 56px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        .footer-cta h2 {
            font-size: 28px;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-cta p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 500px;
            margin: 0 auto 24px;
        }

        /* Site footer */
        .site-footer {
            background: #0A0C0E;
            padding: 48px 0 24px;
            border-top: 1px solid var(--border-subtle);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 300px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* Scroll progress bar */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: transparent;
            z-index: 1001;
            pointer-events: none;
        }
        .scroll-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
            width: 0%;
            transition: width 0.1s linear;
        }

        /* Responsive helpers */
        .hidden-mobile {
            display: initial;
        }
        @media (max-width: 640px) {
            .hidden-mobile {
                display: none;
            }
        }

        /* Custom animation for hero */
        @keyframes pulse-glow {
            0%, 100% {
                box-shadow: 0 0 12px rgba(255, 122, 0, 0.4);
            }
            50% {
                box-shadow: 0 0 28px rgba(255, 122, 0, 0.75);
            }
        }
        .animate-pulse-glow {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .text-accent-orange {
            color: var(--accent-orange);
        }
        .text-accent-cyan {
            color: var(--accent-cyan);
        }
        .text-accent-pink {
            color: var(--accent-pink);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .bg-card {
            background-color: var(--bg-card);
        }
        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }
        .border-subtle {
            border: 1px solid var(--border-subtle);
        }
        .border-medium {
            border: 1px solid var(--border-medium);
        }
        .rounded-card {
            border-radius: var(--radius-md);
        }
        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }
        .shadow-card {
            box-shadow: var(--shadow-card);
        }
        .transition-transform {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: var(--nav-height);
            background: rgba(13, 15, 18, 0.92);
            border-bottom: 1px solid var(--border-subtle);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 22px;
            color: #fff;
            flex-shrink: 0;
            letter-spacing: -0.5px;
        }
        .logo:hover {
            color: #fff;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--accent-orange);
            color: #0D0F12;
            font-size: 14px;
            flex-shrink: 0;
        }
        .logo-text {
            display: inline-flex;
            align-items: baseline;
        }
        .logo-text span {
            color: var(--accent-orange);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 2px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-shrink: 1;
            min-width: 0;
            padding: 4px 0;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 20px;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .nav-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            border-color: var(--accent-orange);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn-primary {
            padding: 10px 20px;
            font-size: 14px;
            white-space: nowrap;
        }
        @media (max-width: 1024px) {
            .site-header .container {
                flex-wrap: wrap;
                height: auto;
                padding-top: 10px;
                padding-bottom: 10px;
                gap: 8px;
            }
            .site-header {
                height: auto;
                min-height: var(--nav-height);
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .nav-cta {
                margin-left: auto;
            }
        }
        @media (max-width: 640px) {
            .site-header .container {
                padding-left: 12px;
                padding-right: 12px;
                gap: 6px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
            }
            .nav-cta .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }
        }
        .hero-category {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: 80px 0 60px;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 15, 18, 0.82);
            z-index: 1;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        .hero-category h1 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .hero-category h1 .highlight {
            color: var(--accent-orange);
        }
        .hero-category .hero-sub {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }
        .metric-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }
        .metric-card {
            background: rgba(23, 26, 33, 0.85);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            backdrop-filter: blur(6px);
        }
        .metric-card .metric-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-orange);
            letter-spacing: -1px;
            margin-bottom: 4px;
        }
        .metric-card .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .metric-card .metric-trend {
            font-size: 12px;
            color: var(--accent-cyan);
            margin-top: 4px;
            display: inline-block;
        }
        @media (max-width: 768px) {
            .metric-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .hero-category h1 {
                font-size: 28px;
            }
            .hero-category .hero-sub {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-category {
                padding: 48px 0 36px;
            }
            .hero-category h1 {
                font-size: 24px;
            }
            .metric-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .metric-card {
                padding: 14px;
            }
            .metric-card .metric-value {
                font-size: 22px;
            }
        }
        .section-block {
            padding: 56px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-secondary);
        }
        .section-heading {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-heading .accent-line {
            display: inline-block;
            width: 40px;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
            margin-right: 10px;
            vertical-align: middle;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 32px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(20, 224, 200, 0.12);
            transform: translateY(-3px);
        }
        .feature-card .feature-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .section-block {
                padding: 40px 0;
            }
        }
        .content-card-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .content-card .card-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #1A1D24;
            position: relative;
        }
        .content-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .content-card:hover .card-thumb img {
            transform: scale(1.05);
        }
        .content-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-card .card-date .chip {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(255, 122, 0, 0.12);
            color: var(--accent-orange);
            font-size: 11px;
            font-weight: 600;
        }
        .content-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .content-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }
        .content-card .card-heat {
            font-size: 12px;
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .content-card.card-wide {
            grid-column: span 4;
        }
        .content-card.card-standard {
            grid-column: span 2;
        }
        @media (max-width: 1024px) {
            .content-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .content-card.card-wide {
                grid-column: span 2;
            }
            .content-card.card-standard {
                grid-column: span 1;
            }
        }
        @media (max-width: 520px) {
            .content-card-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .content-card.card-wide,
            .content-card.card-standard {
                grid-column: span 1;
            }
        }
        .deep-content {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px;
            position: relative;
            overflow: hidden;
        }
        .deep-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan), transparent);
        }
        .deep-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .deep-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .deep-content p:last-child {
            margin-bottom: 0;
        }
        @media (max-width: 640px) {
            .deep-content {
                padding: 24px;
            }
            .deep-content h3 {
                font-size: 18px;
            }
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(20, 224, 200, 0.08);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: all 0.25s ease;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-item .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            font-size: 16px;
            transition: all 0.3s ease;
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--accent-orange);
            color: #0D0F12;
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .join-form-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .join-form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .join-form-card .form-info h3 {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .join-form-card .form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .join-form-card .form-info .data-note {
            font-size: 14px;
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .join-form-card form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .join-form-card .form-group {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .join-form-card label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .join-form-card input,
        .join-form-card select,
        .join-form-card textarea {
            background: var(--bg-primary);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-primary);
            transition: all 0.25s ease;
            width: 100%;
        }
        .join-form-card input:focus,
        .join-form-card select:focus,
        .join-form-card textarea:focus {
            border-color: var(--accent-orange);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.15);
        }
        .join-form-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        @media (max-width: 768px) {
            .join-form-card {
                grid-template-columns: 1fr;
                padding: 24px;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .join-form-card {
                padding: 20px;
            }
            .join-form-card .form-info h3 {
                font-size: 20px;
            }
        }
        .site-footer {
            background: #0A0C0F;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-subtle);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 300px;
        }
        .site-footer .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-orange);
        }
        .site-footer .footer-bottom {
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .site-footer .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer .footer-brand {
                grid-column: span 1;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .text-accent-orange { color: var(--accent-orange); }
        .text-accent-cyan { color: var(--accent-cyan); }
        .text-accent-pink { color: var(--accent-pink); }
        .text-secondary { color: var(--text-secondary); }
        .text-muted { color: var(--text-muted); }
        .bg-card { background-color: var(--bg-card); }
        .bg-card-hover { background-color: var(--bg-card-hover); }
        .border-subtle { border: 1px solid var(--border-subtle); }
        .border-medium { border: 1px solid var(--border-medium); }
        .rounded-card { border-radius: var(--radius-md); }
        .rounded-lg-card { border-radius: var(--radius-lg); }
        .shadow-card { box-shadow: var(--shadow-card); }
        .transition-transform { transition: transform 0.25s ease, box-shadow 0.25s ease; }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active { transform: scale(0.98); box-shadow: none; }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active { transform: scale(0.98); }
        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
        .btn-readmore .arrow { display: inline-block; transition: transform 0.25s ease; }
        .btn-readmore:hover .arrow { transform: translateX(4px); }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(13, 15, 18, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 22px;
            color: #fff;
            letter-spacing: 1px;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--accent-orange);
            color: #0D0F12;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
        }
        .logo-text span { color: var(--accent-orange); }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
            flex-wrap: nowrap;
            padding: 4px 0;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }
        .nav-tab:hover {
            color: #fff;
            background-color: rgba(255, 255, 255, 0.06);
        }
        .nav-tab.active {
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            border-color: var(--accent-orange);
        }
        .nav-cta { flex-shrink: 0; }
        .nav-cta .btn-primary {
            padding: 10px 22px;
            font-size: 15px;
            border-radius: 20px;
        }
        @media (max-width: 900px) {
            .site-header { height: auto; min-height: var(--nav-height); padding: 8px 0; }
            .site-header .container { flex-wrap: wrap; }
            .nav-tabs { order: 3; width: 100%; justify-content: flex-start; }
            .nav-cta { margin-left: auto; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 18px; }
            .logo-icon { width: 28px; height: 28px; font-size: 13px; }
            .nav-tab { font-size: 12px; padding: 6px 12px; }
            .nav-cta .btn-primary { padding: 8px 16px; font-size: 13px; }
        }

        /* Hero */
        .category-hero {
            position: relative;
            padding: 80px 0 60px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            isolation: isolate;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 15, 18, 0.82);
            z-index: -1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
            z-index: -1;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 122, 0, 0.15);
            border: 1px solid rgba(255, 122, 0, 0.4);
            color: var(--accent-orange);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-family: var(--font-title);
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }
        .hero-title .highlight {
            color: var(--accent-orange);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 680px;
            margin: 0;
        }
        @media (max-width: 768px) {
            .category-hero { padding: 50px 0 40px; }
            .hero-title { font-size: 28px; }
            .hero-subtitle { font-size: 16px; }
        }

        /* Stats Bar */
        .stats-bar {
            margin-top: -30px;
            position: relative;
            z-index: 5;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: rgba(23, 26, 33, 0.95);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            border-color: var(--border-medium);
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .stat-value {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            letter-spacing: -0.5px;
        }
        .stat-value .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-left: 4px;
            letter-spacing: 0;
        }
        .stat-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-top: 8px;
        }
        .stat-trend.up { color: var(--accent-cyan); }
        .stat-trend.down { color: var(--accent-pink); }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-value { font-size: 24px; }
        }
        @media (max-width: 520px) {
            .stat-card { padding: 16px 18px; }
            .stat-value { font-size: 20px; }
        }

        /* Section Common */
        .section {
            padding: 64px 0;
        }
        .section-heading {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0 0 36px;
            max-width: 720px;
            line-height: 1.7;
        }
        .section-title-wrap {
            margin-bottom: 36px;
        }
        .section-title-wrap .accent-line {
            width: 48px;
            height: 4px;
            background: var(--accent-orange);
            border-radius: 2px;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section { padding: 40px 0; }
            .section-heading { font-size: 24px; }
        }

        /* Content Cards */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--border-medium);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            background: var(--bg-card-hover);
        }
        .content-card.span-7 { grid-column: span 7; }
        .content-card.span-5 { grid-column: span 5; }
        .content-card.span-4 { grid-column: span 4; }
        .content-card.span-6 { grid-column: span 6; }
        .content-card.span-12 { grid-column: span 12; }
        .content-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .content-card.span-7 .content-card-img { height: 240px; }
        .content-card.span-12 .content-card-img { height: 280px; }
        .content-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-date {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 8px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.45;
            transition: color 0.25s ease;
        }
        .content-card:hover .card-title { color: var(--accent-orange); }
        .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 14px;
        }
        .card-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background: rgba(255, 122, 0, 0.12);
            color: var(--accent-orange);
            letter-spacing: 0.3px;
        }
        .card-tag.cyan {
            background: rgba(20, 224, 200, 0.12);
            color: var(--accent-cyan);
        }
        .card-tag.pink {
            background: rgba(255, 45, 120, 0.12);
            color: var(--accent-pink);
        }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-subtle);
        }
        .card-heat {
            font-size: 12px;
            color: var(--text-muted);
        }
        .card-heat strong {
            color: var(--accent-orange);
            font-weight: 700;
        }
        @media (max-width: 1024px) {
            .content-card.span-7, .content-card.span-5, .content-card.span-4, .content-card.span-6, .content-card.span-12 {
                grid-column: span 6;
            }
        }
        @media (max-width: 640px) {
            .content-grid { gap: 16px; }
            .content-card.span-7, .content-card.span-5, .content-card.span-4, .content-card.span-6, .content-card.span-12 {
                grid-column: span 12;
            }
            .content-card-img, .content-card.span-7 .content-card-img, .content-card.span-12 .content-card-img { height: 180px; }
            .content-card-body { padding: 16px 18px 20px; }
        }

        /* Deep Content */
        .deep-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
        }
        .deep-content h3 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }
        .deep-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0 0 16px;
        }
        .deep-content p:last-child { margin-bottom: 0; }
        .deep-content .highlight-text {
            color: var(--accent-orange);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .deep-content { padding: 24px 20px; }
        }

        /* Comparison */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .comparison-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 30px;
        }
        .comparison-card.highlight {
            border-color: rgba(255, 122, 0, 0.5);
            background: rgba(23, 26, 33, 0.98);
            box-shadow: 0 0 0 1px rgba(255, 122, 0, 0.2), var(--shadow-card);
        }
        .comparison-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 20px;
        }
        .comparison-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-bottom: 18px;
        }
        .comparison-item:last-child { margin-bottom: 0; }
        .comparison-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            display: flex;
            justify-content: space-between;
        }
        .comparison-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
        }
        .comparison-bar .fill {
            height: 100%;
            border-radius: 4px;
            background: var(--text-muted);
            transition: width 0.8s ease;
        }
        .comparison-card.highlight .comparison-bar .fill {
            background: var(--accent-orange);
        }
        .comparison-bar .fill.cyan {
            background: var(--accent-cyan);
        }
        .comparison-note {
            grid-column: 1 / -1;
            text-align: center;
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .comparison-wrap { grid-template-columns: 1fr; gap: 16px; }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-item.active {
            border-color: rgba(255, 122, 0, 0.5);
            box-shadow: 0 0 0 1px rgba(255, 122, 0, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            cursor: pointer;
            text-align: left;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            transition: color 0.25s ease;
        }
        .faq-question:hover { color: var(--accent-orange); }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--accent-orange);
            font-size: 18px;
            font-weight: 700;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(255, 122, 0, 0.15);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* Form */
        .join-section {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 48px 44px;
            position: relative;
            overflow: hidden;
        }
        .join-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan), var(--accent-pink));
        }
        .join-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .join-form label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .join-form input,
        .join-form select,
        .join-form textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            color: #fff;
            transition: border-color 0.25s ease;
            margin-bottom: 18px;
        }
        .join-form input:focus,
        .join-form select:focus,
        .join-form textarea:focus {
            border-color: var(--accent-orange);
            outline: none;
        }
        .join-form input::placeholder,
        .join-form textarea::placeholder {
            color: var(--text-muted);
        }
        .join-form textarea { resize: vertical; min-height: 100px; }
        .join-incentive {
            background: rgba(255, 122, 0, 0.06);
            border: 1px solid rgba(255, 122, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-top: 10px;
        }
        .join-incentive p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 8px;
        }
        .join-incentive strong {
            color: var(--accent-orange);
            font-size: 18px;
            font-weight: 800;
        }
        @media (max-width: 768px) {
            .join-grid { grid-template-columns: 1fr; gap: 24px; }
            .join-section { padding: 32px 24px; }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 28px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 14px 0 0;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* Utility */
        .divider {
            border: none;
            height: 1px;
            background: var(--border-subtle);
            margin: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--accent-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .text-accent-orange {
            color: var(--accent-orange);
        }
        .text-accent-cyan {
            color: var(--accent-cyan);
        }
        .text-accent-pink {
            color: var(--accent-pink);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .bg-card {
            background-color: var(--bg-card);
        }
        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }
        .border-subtle {
            border: 1px solid var(--border-subtle);
        }
        .border-medium {
            border: 1px solid var(--border-medium);
        }
        .rounded-card {
            border-radius: var(--radius-md);
        }
        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }
        .shadow-card {
            box-shadow: var(--shadow-card);
        }

        /* ========== 按钮系统 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(13, 15, 18, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 22px;
            color: var(--text-primary);
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--accent-orange);
            color: #0D0F12;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 900;
        }
        .logo-text span {
            color: var(--accent-orange);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
            flex-wrap: nowrap;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 20px;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            position: relative;
        }
        .nav-tab:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
        }
        .nav-tab.active:hover {
            background: var(--accent-orange-hover);
            color: #0D0F12;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn-primary {
            padding: 10px 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        @media (max-width: 1024px) {
            .site-header .container {
                gap: 12px;
                flex-wrap: wrap;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .site-header {
                height: auto;
                min-height: var(--nav-height);
                padding: 8px 0;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                padding-bottom: 4px;
            }
            .nav-cta {
                margin-left: auto;
            }
        }
        @media (max-width: 640px) {
            .site-header .container {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
                border-radius: 6px;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                gap: 2px;
            }
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
                border-radius: 16px;
            }
            .nav-cta .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        /* ========== Hero ========== */
        .hero-category {
            position: relative;
            padding: 80px 0 60px;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 18, 0.85) 0%, rgba(13, 15, 18, 0.72) 50%, rgba(13, 15, 18, 0.9) 100%);
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(20, 224, 200, 0.12);
            border: 1px solid rgba(20, 224, 200, 0.35);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero-category h1 {
            font-family: var(--font-title);
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-category h1 .highlight {
            color: var(--accent-orange);
        }
        .hero-category .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-quick-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
        }
        .hero-quick-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .hero-quick-stat .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .hero-quick-stat .dot.orange {
            background: var(--accent-orange);
        }
        .hero-quick-stat .dot.cyan {
            background: var(--accent-cyan);
        }
        .hero-quick-stat .dot.pink {
            background: var(--accent-pink);
        }

        @media (max-width: 768px) {
            .hero-category {
                padding: 48px 0 40px;
            }
            .hero-category h1 {
                font-size: 28px;
            }
            .hero-category .hero-subtitle {
                font-size: 15px;
            }
            .hero-quick-stats {
                gap: 14px;
                margin-top: 24px;
                padding-top: 16px;
            }
        }
        @media (max-width: 640px) {
            .hero-category h1 {
                font-size: 24px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ========== 指标条 ========== */
        .metric-bar-section {
            padding: 32px 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
        }
        .metric-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-bar-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }
        .metric-bar-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.5px;
        }
        .metric-bar-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .metric-bar-value .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-left: 4px;
        }
        .metric-bar-trend {
            font-size: 13px;
            font-weight: 600;
        }
        .metric-bar-trend.up {
            color: var(--accent-cyan);
        }
        .metric-bar-trend.hot {
            color: var(--accent-pink);
        }

        @media (max-width: 1024px) {
            .metric-bar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .metric-bar-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-bar-item {
                padding: 12px 14px;
            }
            .metric-bar-value {
                font-size: 22px;
            }
        }

        /* ========== 通用 Section ========== */
        .section {
            padding: 64px 0;
        }
        .section-heading {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .section-subheading {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .section-heading .accent-line {
            display: inline-block;
            width: 40px;
            height: 4px;
            background: var(--accent-orange);
            border-radius: 2px;
            margin-right: 12px;
            vertical-align: middle;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-heading {
                font-size: 24px;
            }
            .section-subheading {
                font-size: 15px;
            }
        }

        /* ========== 内容卡片 ========== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .content-grid .content-card:first-child {
            grid-column: span 2;
        }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .content-card .card-image {
            width: 100%;
            height: 200px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .content-card:first-child .card-image {
            height: 280px;
        }
        .content-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .card-image img {
            transform: scale(1.04);
        }
        .content-card .card-image .image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 15, 18, 0.7) 0%, rgba(13, 15, 18, 0) 50%);
        }
        .content-card .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .content-card .card-date {
            font-size: 13px;
            color: var(--text-muted);
        }
        .content-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            border: 1px solid var(--border-medium);
            color: var(--accent-cyan);
            background: rgba(20, 224, 200, 0.08);
        }
        .content-card .card-tag.pink {
            color: var(--accent-pink);
            border-color: rgba(255, 45, 120, 0.35);
            background: rgba(255, 45, 120, 0.08);
        }
        .content-card .card-tag.orange {
            color: var(--accent-orange);
            border-color: rgba(255, 122, 0, 0.35);
            background: rgba(255, 122, 0, 0.08);
        }
        .content-card .card-title {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin: 0;
        }
        .content-card:first-child .card-title {
            font-size: 24px;
        }
        .content-card .card-summary {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
        }
        .content-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }
        .content-card .card-heat {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .content-card .card-heat .flame {
            color: var(--accent-orange);
        }

        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr 1fr;
            }
            .content-grid .content-card:first-child {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .content-grid .content-card:first-child {
                grid-column: span 1;
            }
            .content-card .card-image {
                height: 180px;
            }
            .content-card:first-child .card-image {
                height: 200px;
            }
            .content-card .card-title {
                font-size: 18px;
            }
            .content-card:first-child .card-title {
                font-size: 20px;
            }
            .content-card .card-body {
                padding: 16px 18px 20px;
            }
        }

        /* ========== 深度正文 ========== */
        .deep-content {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 40px 44px;
            position: relative;
            overflow: hidden;
        }
        .deep-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 6px;
            height: 100%;
            background: linear-gradient(to bottom, var(--accent-orange), var(--accent-pink));
        }
        .deep-content h2 {
            font-family: var(--font-title);
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .deep-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .deep-content p strong {
            color: var(--text-primary);
        }
        .deep-content .deep-highlight {
            color: var(--accent-orange);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .deep-content {
                padding: 28px 24px;
            }
            .deep-content h2 {
                font-size: 22px;
            }
            .deep-content p {
                font-size: 15px;
            }
        }

        /* ========== 品类标签云 ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .game-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .tag-cloud .game-tag:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            background: rgba(255, 122, 0, 0.06);
        }
        .tag-cloud .game-tag .game-icon {
            font-size: 16px;
        }

        /* ========== 成长路径 ========== */
        .growth-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .growth-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 24px 20px;
            position: relative;
            transition: all 0.3s ease;
        }
        .growth-step:hover {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
        }
        .growth-step .step-number {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-orange);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .growth-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .growth-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .growth-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .growth-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item.active {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 1px rgba(255, 122, 0, 0.3);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: all 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-medium);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-orange);
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent-orange);
            background: rgba(255, 122, 0, 0.1);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.9;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 640px) {
            .faq-question {
                font-size: 16px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ========== 表单 ========== */
        .join-form-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-medium);
            padding: 44px 48px;
            position: relative;
            overflow: hidden;
        }
        .join-form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(to right, var(--accent-orange), var(--accent-pink), var(--accent-cyan));
        }
        .join-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .join-form-info h2 {
            font-family: var(--font-title);
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .join-form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .join-form-info .form-benefit-list {
            margin-top: 18px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .join-form-info .form-benefit-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-primary);
        }
        .join-form-info .form-benefit-list li .check {
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .join-form-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .join-form-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .join-form-form label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }
        .join-form-form input,
        .join-form-form select,
        .join-form-form textarea {
            width: 100%;
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 12px 14px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }
        .join-form-form input:focus,
        .join-form-form select:focus,
        .join-form-form textarea:focus {
            border-color: var(--accent-orange);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.15);
        }
        .join-form-form input::placeholder,
        .join-form-form textarea::placeholder {
            color: var(--text-muted);
        }
        .join-form-form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239BA3AF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            cursor: pointer;
        }
        .join-form-form textarea {
            resize: vertical;
            min-height: 90px;
        }
        .join-form-form .form-submit {
            margin-top: 4px;
        }
        .form-data-hint {
            font-size: 13px;
            color: var(--accent-cyan);
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        @media (max-width: 1024px) {
            .join-form-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .join-form-section {
                padding: 28px 20px;
            }
            .join-form-form .form-row {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .join-form-info h2 {
                font-size: 22px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0A0C0F;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* ========== 图标装饰 ========== */
        .section-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 122, 0, 0.1);
            border: 1px solid rgba(255, 122, 0, 0.3);
            margin-bottom: 16px;
            font-size: 20px;
        }
        .section-icon.cyan {
            background: rgba(20, 224, 200, 0.1);
            border-color: rgba(20, 224, 200, 0.3);
        }
        .section-icon.pink {
            background: rgba(255, 45, 120, 0.1);
            border-color: rgba(255, 45, 120, 0.3);
        }

        /* ========== 互动特色卡片 ========== */
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .interaction-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 24px 22px;
            transition: all 0.3s ease;
        }
        .interaction-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(20, 224, 200, 0.1);
        }
        .interaction-card .interaction-icon {
            font-size: 28px;
            margin-bottom: 14px;
        }
        .interaction-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .interaction-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .interaction-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .interaction-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== 保障/福利 ========== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .guarantee-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 18px 16px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .guarantee-item:hover {
            border-color: var(--border-medium);
            background: var(--bg-card-hover);
        }
        .guarantee-item .guarantee-icon {
            font-size: 26px;
            margin-bottom: 10px;
            display: block;
        }
        .guarantee-item h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .guarantee-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .guarantee-item {
                padding: 14px 12px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--accent-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .text-accent-orange {
            color: var(--accent-orange);
        }
        .text-accent-cyan {
            color: var(--accent-cyan);
        }
        .text-accent-pink {
            color: var(--accent-pink);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .bg-card {
            background-color: var(--bg-card);
        }
        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }
        .border-subtle {
            border: 1px solid var(--border-subtle);
        }
        .border-medium {
            border: 1px solid var(--border-medium);
        }
        .rounded-card {
            border-radius: var(--radius-md);
        }
        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }
        .shadow-card {
            box-shadow: var(--shadow-card);
        }
        .transition-transform {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: var(--nav-height);
            background: rgba(13, 15, 18, 0.92);
            border-bottom: 1px solid var(--border-subtle);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 22px;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-orange), #FF2D78);
            border-radius: 8px;
            color: #0D0F12;
            font-size: 18px;
            flex-shrink: 0;
        }
        .logo-text {
            display: inline-flex;
            align-items: baseline;
        }
        .logo-text span:last-child {
            color: var(--accent-orange);
            margin-left: 2px;
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 2px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
            flex: 1;
            justify-content: center;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            position: relative;
        }
        .nav-tab::before {
            content: '';
            position: absolute;
            left: 8px;
            right: 8px;
            bottom: -2px;
            height: 2px;
            background: transparent;
            border-radius: 2px;
        }
        .nav-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
        }
        .nav-tab.active::before {
            background: transparent;
        }
        .nav-cta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }

        @media (max-width: 1024px) {
            .site-header .container {
                flex-wrap: nowrap;
                gap: 8px;
            }
            .nav-tabs {
                justify-content: flex-start;
                flex: 1;
            }
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: 60px;
            }
            .site-header .container {
                flex-direction: column;
                align-items: stretch;
                padding-top: 10px;
                padding-bottom: 10px;
                gap: 6px;
            }
            .logo {
                justify-content: center;
                font-size: 18px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .nav-tabs {
                overflow-x: auto;
                justify-content: flex-start;
                padding-bottom: 4px;
            }
            .nav-tab {
                padding: 5px 10px;
                font-size: 12px;
                border-radius: 16px;
            }
            .nav-cta {
                justify-content: center;
                padding-top: 4px;
            }
            .nav-cta .btn-primary {
                padding: 8px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .nav-tab {
                padding: 4px 8px;
                font-size: 11px;
            }
            .logo-text {
                font-size: 16px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom .beian-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* Category page specific */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 18, 0.85) 0%, rgba(13, 15, 18, 0.7) 50%, rgba(13, 15, 18, 0.9) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 64px 0;
            max-width: 720px;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 122, 0, 0.18);
            border: 1px solid rgba(255, 122, 0, 0.4);
            color: var(--accent-orange);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .hero-title {
            font-family: var(--font-title);
            font-size: clamp(28px, 5vw, 40px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #fff;
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 600px;
        }

        /* Metrics bar */
        .metrics-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: -48px;
            position: relative;
            z-index: 3;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .metric-value {
            font-family: var(--font-mono);
            font-size: 30px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .metric-trend {
            font-size: 12px;
            color: var(--accent-cyan);
            margin-top: 4px;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .metrics-bar {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -32px;
                gap: 8px;
            }
            .metric-value {
                font-size: 22px;
            }
            .hero-section {
                min-height: 360px;
            }
        }
        @media (max-width: 520px) {
            .metrics-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-card {
                padding: 14px;
            }
            .hero-title {
                font-size: 24px;
            }
        }

        /* Content cards section */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .content-card.featured {
            grid-column: span 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
        }
        .content-card.featured .card-img {
            height: 100%;
            min-height: 220px;
        }
        .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background-color: var(--bg-secondary);
        }
        .card-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-tag {
            display: inline-block;
            background: rgba(20, 224, 200, 0.12);
            color: var(--accent-cyan);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .card-title {
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .card-stats {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .card-stats .hot {
            color: var(--accent-pink);
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-card.featured {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .content-card.featured {
                grid-column: span 1;
                display: flex;
            }
            .content-card.featured .card-img {
                height: 180px;
                min-height: auto;
            }
            .card-img {
                height: 160px;
            }
        }

        /* Deep content */
        .deep-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            line-height: 2;
            font-size: 15.5px;
            color: var(--text-primary);
        }
        .deep-content h3 {
            font-size: 20px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .deep-content p {
            margin-bottom: 1em;
            color: var(--text-secondary);
            line-height: 2;
        }
        .deep-content p strong {
            color: var(--text-primary);
        }

        @media (max-width: 640px) {
            .deep-content {
                padding: 24px 18px;
                font-size: 14px;
            }
        }

        /* Service matrix - 2+3 layout */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .matrix-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .matrix-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .matrix-card.wide {
            grid-column: span 3;
            background: linear-gradient(135deg, rgba(255, 122, 0, 0.08) 0%, rgba(13, 15, 18, 0.95) 70%);
            border-color: rgba(255, 122, 0, 0.25);
        }
        .matrix-card.wide-alt {
            grid-column: span 3;
            background: linear-gradient(135deg, rgba(20, 224, 200, 0.07) 0%, rgba(13, 15, 18, 0.95) 70%);
            border-color: rgba(20, 224, 200, 0.2);
        }
        .matrix-card.narrow {
            grid-column: span 2;
        }
        .matrix-card .icon {
            font-size: 28px;
            margin-bottom: 10px;
            display: block;
        }
        .matrix-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .matrix-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .matrix-card .metric-tag {
            display: inline-flex;
            gap: 6px;
            font-size: 12px;
            color: var(--accent-cyan);
            font-weight: 600;
            flex-wrap: wrap;
        }
        .matrix-card .metric-tag span {
            background: rgba(20, 224, 200, 0.1);
            padding: 2px 8px;
            border-radius: 10px;
        }
        .matrix-card a.card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--accent-orange);
            font-size: 13px;
            font-weight: 600;
            margin-top: 6px;
        }

        @media (max-width: 1024px) {
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-card.wide,
            .matrix-card.wide-alt {
                grid-column: span 2;
            }
            .matrix-card.narrow {
                grid-column: span 1;
            }
        }
        @media (max-width: 640px) {
            .matrix-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .matrix-card.wide,
            .matrix-card.wide-alt,
            .matrix-card.narrow {
                grid-column: span 1;
            }
        }

        /* Comparison table */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .comparison-table th {
            background: var(--bg-secondary);
            padding: 14px 18px;
            text-align: left;
            font-weight: 700;
            font-size: 14px;
            color: #fff;
            border-bottom: 1px solid var(--border-medium);
        }
        .comparison-table td {
            padding: 14px 18px;
            font-size: 14px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            vertical-align: middle;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .bar-track {
            width: 100%;
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
            position: relative;
        }
        .bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 1s ease;
        }
        .bar-fill.orange {
            background: var(--accent-orange);
        }
        .bar-fill.cyan {
            background: var(--accent-cyan);
        }
        .bar-fill.pink {
            background: var(--accent-pink);
        }

        @media (max-width: 640px) {
            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .comparison-table th:nth-child(3),
            .comparison-table td:nth-child(3) {
                display: none;
            }
        }

        /* FAQ accordion */
        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            background: var(--bg-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-item.active {
            border-color: var(--accent-orange);
            box-shadow: 0 0 12px rgba(255, 122, 0, 0.15);
        }
        .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 16px;
            color: #fff;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: all 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-question .icon {
            font-size: 20px;
            color: var(--accent-orange);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Form section */
        .form-section {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            position: relative;
            overflow: hidden;
        }
        .form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-pink), var(--accent-cyan));
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-field.full {
            grid-column: span 2;
        }
        .form-field label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .form-field input,
        .form-field select,
        .form-field textarea {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }
        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--accent-orange);
            outline: none;
            box-shadow: 0 0 8px rgba(255, 122, 0, 0.2);
        }
        .form-field textarea {
            resize: vertical;
            min-height: 100px;
        }
        .form-hint {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 10px;
        }

        @media (max-width: 640px) {
            .form-section {
                padding: 24px 18px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-field.full {
                grid-column: span 1;
            }
        }

        /* Section spacing */
        .section-spacing {
            padding: 48px 0;
        }
        .section-title {
            font-family: var(--font-title);
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 600px;
            line-height: 1.7;
        }

        /* Utility */
        .flex {
            display: flex;
        }
        .items-center {
            align-items: center;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .text-center {
            text-align: center;
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        *, *::before, *::after {
            box-sizing: border-box;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .text-accent-orange { color: var(--accent-orange); }
        .text-accent-cyan { color: var(--accent-cyan); }
        .text-accent-pink { color: var(--accent-pink); }
        .text-secondary { color: var(--text-secondary); }
        .text-muted { color: var(--text-muted); }
        .bg-card { background-color: var(--bg-card); }
        .bg-card-hover { background-color: var(--bg-card-hover); }
        .border-subtle { border: 1px solid var(--border-subtle); }
        .border-medium { border: 1px solid var(--border-medium); }
        .rounded-card { border-radius: var(--radius-md); }
        .rounded-lg-card { border-radius: var(--radius-lg); }
        .shadow-card { box-shadow: var(--shadow-card); }
        .transition-transform { transition: transform 0.25s ease, box-shadow 0.25s ease; }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(13, 15, 18, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .logo:hover {
            color: var(--accent-orange);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--accent-orange);
            color: #0D0F12;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 900;
            flex-shrink: 0;
        }
        .logo-text {
            display: inline-flex;
            align-items: baseline;
        }
        .logo-text span {
            color: var(--accent-orange);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex: 1;
            justify-content: center;
            padding: 4px 0;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all 0.25s ease;
            position: relative;
            border: 1px solid transparent;
        }
        .nav-tab:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            border-color: var(--accent-orange);
            box-shadow: 0 0 16px rgba(255, 122, 0, 0.35);
        }
        .nav-cta {
            flex-shrink: 0;
        }

        /* Hero - Creator Profile Style */
        .hero-profile {
            position: relative;
            padding: 60px 0 80px;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero-profile::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13,15,18,0.82) 0%, rgba(13,15,18,0.9) 70%, rgba(13,15,18,0.96) 100%);
            z-index: 1;
        }
        .hero-profile > .container {
            position: relative;
            z-index: 2;
        }
        .profile-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }
        .profile-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(255, 122, 0, 0.12);
            border: 1px solid rgba(255, 122, 0, 0.3);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange);
        }
        .profile-main {
            display: flex;
            align-items: flex-end;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .profile-avatar {
            width: 88px;
            height: 88px;
            border-radius: 24px;
            background: linear-gradient(135deg, var(--accent-orange), #7A3D00);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
            font-weight: 900;
            color: #0D0F12;
            flex-shrink: 0;
            box-shadow: 0 8px 24px rgba(255, 122, 0, 0.4);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .profile-info h1 {
            font-family: var(--font-title);
            font-size: 36px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .profile-info h1 span {
            color: var(--accent-orange);
        }
        .profile-info p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
            max-width: 560px;
        }
        .profile-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            margin-bottom: 32px;
        }
        .profile-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .profile-stat .stat-value {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
        }
        .profile-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .profile-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Data Strip */
        .data-strip {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 24px 0;
        }
        .data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-strip-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all 0.25s ease;
        }
        .data-strip-item:hover {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
        }
        .data-strip-item .ds-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-orange);
            letter-spacing: -0.5px;
        }
        .data-strip-item .ds-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .data-strip-item .ds-trend {
            display: inline-block;
            margin-top: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
        }

        /* Section Common */
        .section {
            padding: 64px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .section-header h2 span {
            color: var(--accent-orange);
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 720px;
            margin: 0;
        }
        .section-divider {
            height: 1px;
            background: var(--border-subtle);
            margin: 0;
        }

        /* Deep Content */
        .deep-content {
            max-width: 820px;
            margin: 0 auto;
        }
        .deep-content h3 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
        }
        .deep-content p {
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.9;
            margin: 0 0 16px;
            opacity: 0.92;
        }
        .deep-content p strong {
            color: var(--accent-orange);
            font-weight: 600;
        }
        .deep-content .highlight-block {
            background: var(--bg-card);
            border-left: 3px solid var(--accent-orange);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 20px 24px;
            margin: 20px 0;
            color: var(--text-primary);
            font-size: 15px;
            line-height: 1.9;
        }

        /* Content Cards */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .content-card .card-image {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .content-card .card-image .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(13, 15, 18, 0.85);
            color: var(--accent-orange);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            border: 1px solid rgba(255, 122, 0, 0.3);
        }
        .content-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .content-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .content-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }
        .content-card .card-heat {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .content-card.featured {
            grid-column: span 3;
            flex-direction: row;
        }
        .content-card.featured .card-image {
            width: 40%;
            height: auto;
            min-height: 280px;
        }
        .content-card.featured .card-body {
            width: 60%;
            padding: 28px;
        }
        .content-card.featured .card-title {
            font-size: 24px;
        }

        /* Process Section */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            transition: all 0.25s ease;
        }
        .process-step:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(20, 224, 200, 0.1);
        }
        .process-step .step-number {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 900;
            color: var(--accent-orange);
            opacity: 0.35;
            line-height: 1;
            margin-bottom: 12px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Comparison */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            max-width: 900px;
            margin: 0 auto;
        }
        .comparison-col {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .comparison-col.before {
            border-color: rgba(107, 114, 128, 0.3);
        }
        .comparison-col.after {
            border-color: var(--accent-orange);
            box-shadow: 0 0 20px rgba(255, 122, 0, 0.08);
        }
        .comparison-col .comp-header {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-secondary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-subtle);
        }
        .comparison-col.after .comp-header {
            color: var(--accent-orange);
        }
        .comp-row {
            margin-bottom: 14px;
        }
        .comp-row .comp-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 4px;
            display: flex;
            justify-content: space-between;
        }
        .comp-row .comp-bar {
            height: 8px;
            border-radius: 4px;
            background: var(--bg-secondary);
            overflow: hidden;
        }
        .comp-row .comp-bar .bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 0.6s ease;
        }
        .bar-fill.bar-gray {
            background: #6B7280;
        }
        .bar-fill.bar-orange {
            background: var(--accent-orange);
        }
        .bar-fill.bar-cyan {
            background: var(--accent-cyan);
        }
        .comp-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 16px;
            grid-column: span 2;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .faq-item.active {
            border-color: var(--accent-orange);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--accent-orange);
            transition: transform 0.25s ease;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Form */
        .form-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 64px 0;
        }
        .form-wrap {
            max-width: 680px;
            margin: 0 auto;
        }
        .form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            overflow: hidden;
        }
        .form-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan), var(--accent-pink));
        }
        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }
        .form-card p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0 0 24px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: var(--bg-secondary);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 12px rgba(255, 122, 0, 0.15);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            margin-top: 8px;
        }
        .form-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 12px 0 0;
            max-width: 300px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-card.featured {
                grid-column: span 2;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
            .profile-info h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: wrap;
                height: auto;
                padding-top: 10px;
                padding-bottom: 10px;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 8px 0;
            }
            .nav-cta {
                margin-left: auto;
            }
            .hero-profile {
                padding: 40px 0 60px;
            }
            .profile-main {
                flex-direction: column;
                align-items: flex-start;
            }
            .profile-info h1 {
                font-size: 26px;
            }
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-card.featured {
                grid-column: span 1;
                flex-direction: column;
            }
            .content-card.featured .card-image {
                width: 100%;
                height: 200px;
                min-height: auto;
            }
            .content-card.featured .card-body {
                width: 100%;
                padding: 20px;
            }
            .content-card.featured .card-title {
                font-size: 20px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .comp-note {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section {
                padding: 44px 0;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .profile-stats {
                gap: 12px 20px;
            }
            .profile-stat .stat-value {
                font-size: 22px;
            }
            .form-card {
                padding: 20px;
            }
            .data-strip-item .ds-value {
                font-size: 22px;
            }
            .btn-primary {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-secondary {
                padding: 9px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .text-accent-orange {
            color: var(--accent-orange);
        }
        .text-accent-cyan {
            color: var(--accent-cyan);
        }
        .text-accent-pink {
            color: var(--accent-pink);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-muted {
            color: var(--text-muted);
        }

        .bg-card {
            background-color: var(--bg-card);
        }
        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }
        .border-subtle {
            border: 1px solid var(--border-subtle);
        }
        .border-medium {
            border: 1px solid var(--border-medium);
        }

        .rounded-card {
            border-radius: var(--radius-md);
        }
        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }

        .shadow-card {
            box-shadow: var(--shadow-card);
        }
        .transition-transform {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 15, 18, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-family: var(--font-title);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--accent-orange);
            color: #0D0F12;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 1px;
        }
        .logo-text span {
            color: var(--accent-orange);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border-medium) transparent;
            flex: 1;
            justify-content: center;
        }
        .nav-tabs::-webkit-scrollbar {
            height: 4px;
        }
        .nav-tabs::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-tabs::-webkit-scrollbar-thumb {
            background: var(--border-medium);
            border-radius: 4px;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            position: relative;
        }
        .nav-tab:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-tab.active {
            background: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
        }
        .nav-tab:not(.active)::after {
            content: '';
            position: absolute;
            right: -2px;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 16px;
            background: var(--border-medium);
        }
        .nav-tab:last-child:not(.active)::after,
        .nav-tab:not(.active):last-of-type::after {
            display: none;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn-primary {
            padding: 10px 22px;
            font-size: 15px;
            border-radius: 8px;
        }

        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 18, 0.85) 0%, rgba(13, 15, 18, 0.65) 50%, rgba(13, 15, 18, 0.9) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(20, 224, 200, 0.12);
            border: 1px solid rgba(20, 224, 200, 0.35);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
        }
        .hero-title {
            font-family: var(--font-title);
            font-size: 40px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 18px;
            color: #fff;
        }
        .hero-title .highlight {
            color: var(--accent-orange);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 0 28px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .section {
            padding: 64px 0;
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-header h2::before {
            content: '';
            width: 4px;
            height: 28px;
            background: var(--accent-orange);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
            max-width: 720px;
        }

        .metric-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
        }
        .metric-item {
            text-align: center;
            padding: 8px 12px;
            border-right: 1px solid var(--border-subtle);
        }
        .metric-item:last-child {
            border-right: none;
        }
        .metric-value {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-orange);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-top: 4px;
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-medium);
        }
        .content-card.featured {
            grid-column: span 2;
        }
        .content-card-img {
            height: 220px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .content-card.featured .content-card-img {
            height: 300px;
        }
        .content-card-body {
            padding: 20px 22px;
        }
        .content-card-date {
            display: inline-block;
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
        }
        .content-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(20, 224, 200, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            margin-left: 6px;
        }
        .content-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.7;
        }
        .content-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .content-card-meta .heat {
            color: var(--accent-orange);
            font-weight: 600;
        }

        .deep-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
        }
        .deep-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }
        .deep-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0 0 16px;
        }
        .deep-content p:last-child {
            margin-bottom: 0;
        }
        .deep-content .highlight-box {
            background: var(--bg-card);
            border-left: 3px solid var(--accent-orange);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }
        .deep-content .highlight-box p {
            margin: 0;
            color: var(--text-primary);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .faq-item.active {
            border-color: var(--accent-orange);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-orange);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            transition: all 0.25s ease;
        }
        .faq-item.active .faq-icon {
            background: var(--accent-orange);
            color: #0D0F12;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .join-form-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .join-form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .join-form-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }
        .join-form-info p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin: 0 0 18px;
        }
        .join-form-info .data-point {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .join-form-info .data-point .dot {
            width: 6px;
            height: 6px;
            background: var(--accent-cyan);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .join-form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .join-form-card label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .join-form-card input,
        .join-form-card select,
        .join-form-card textarea {
            width: 100%;
            padding: 12px 16px;
            background: var(--bg-primary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 15px;
            margin-bottom: 18px;
            transition: border-color 0.25s ease;
            appearance: none;
            -webkit-appearance: none;
        }
        .join-form-card input:focus,
        .join-form-card select:focus,
        .join-form-card textarea:focus {
            border-color: var(--accent-orange);
            outline: none;
        }
        .join-form-card select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239BA3AF' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 12px 8px;
        }
        .join-form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .join-form-card .btn-primary {
            width: 100%;
            font-size: 17px;
            padding: 14px 0;
        }
        .form-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 12px;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
        }
        .footer-bottom a {
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        @media (max-width: 1024px) {
            .hero-title {
                font-size: 32px;
            }
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-card.featured {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .metric-value {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: wrap;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .site-header {
                height: auto;
                min-height: var(--nav-height);
                padding: 8px 0;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .nav-cta {
                margin-left: auto;
            }
            .hero-section {
                min-height: 320px;
            }
            .hero-content {
                padding: 56px 0;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .metric-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
                padding: 20px 16px;
            }
            .metric-item {
                border-right: none;
                padding: 8px;
            }
            .metric-value {
                font-size: 22px;
            }
            .join-form-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .deep-content {
                padding: 28px 20px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: left;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-card.featured .content-card-img {
                height: 220px;
            }
            .metric-bar {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-value {
                font-size: 20px;
            }
            .metric-label {
                font-size: 12px;
            }
            .section {
                padding: 36px 0;
            }
            .deep-content {
                padding: 22px 16px;
            }
            .deep-content h3 {
                font-size: 19px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .join-form-card {
                padding: 22px 18px;
            }
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
            }
            .nav-cta .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 17px;
            }
        }

        @media (max-width: 375px) {
            .hero-title {
                font-size: 22px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .metric-value {
                font-size: 18px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 15px;
            }
            .nav-tab {
                padding: 5px 10px;
                font-size: 12px;
            }
            .nav-cta .btn-primary {
                padding: 6px 10px;
                font-size: 12px;
            }
        }

/* roulang page: category7 */
:root {
            --bg-primary: #0D0F12;
            --bg-secondary: #111318;
            --bg-card: #171A21;
            --bg-card-hover: #1A1D24;
            --accent-orange: #FF7A00;
            --accent-orange-hover: #FF9123;
            --accent-cyan: #14E0C8;
            --accent-pink: #FF2D78;
            --text-primary: #E6E8EC;
            --text-secondary: #9BA3AF;
            --text-muted: #6B7280;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.16);
            --border-glow: rgba(20, 224, 200, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(255, 122, 0, 0.6);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover {
            color: var(--accent-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .text-accent-orange {
            color: var(--accent-orange);
        }

        .text-accent-cyan {
            color: var(--accent-cyan);
        }

        .text-accent-pink {
            color: var(--accent-pink);
        }

        .text-secondary {
            color: var(--text-secondary);
        }

        .text-muted {
            color: var(--text-muted);
        }

        .bg-card {
            background-color: var(--bg-card);
        }

        .bg-card-hover {
            background-color: var(--bg-card-hover);
        }

        .border-subtle {
            border: 1px solid var(--border-subtle);
        }

        .border-medium {
            border: 1px solid var(--border-medium);
        }

        .rounded-card {
            border-radius: var(--radius-md);
        }

        .rounded-lg-card {
            border-radius: var(--radius-lg);
        }

        .shadow-card {
            box-shadow: var(--shadow-card);
        }

        .transition-transform {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }

        .btn-primary:hover {
            background-color: var(--accent-orange-hover);
            box-shadow: var(--shadow-glow);
            color: #0D0F12;
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }

        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: #fff;
            background-color: rgba(255, 122, 0, 0.08);
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-orange);
            font-weight: 500;
            font-size: 14px;
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-readmore:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .btn-readmore .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }

        .btn-readmore:hover .arrow {
            transform: translateX(4px);
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: var(--nav-height);
            background-color: rgba(13, 15, 18, 0.92);
            border-bottom: 1px solid var(--border-subtle);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--accent-orange);
            color: #0D0F12;
            font-size: 16px;
            border-radius: 8px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
        }

        .logo-text span {
            color: var(--accent-orange);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border-medium) transparent;
            -webkit-overflow-scrolling: touch;
            flex: 1;
            justify-content: center;
            padding: 0 8px;
        }

        .nav-tabs::-webkit-scrollbar {
            height: 3px;
        }

        .nav-tabs::-webkit-scrollbar-thumb {
            background-color: var(--border-medium);
            border-radius: 3px;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all 0.25s ease;
            position: relative;
        }

        .nav-tab:hover {
            color: var(--text-primary);
            background-color: rgba(255, 255, 255, 0.04);
        }

        .nav-tab.active {
            color: #0D0F12;
            background-color: var(--accent-orange);
            font-weight: 700;
            border-color: var(--accent-orange);
        }

        .nav-tab.active:hover {
            color: #0D0F12;
            background-color: var(--accent-orange-hover);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .nav-cta .btn-primary {
            padding: 10px 20px;
            font-size: 14px;
        }

        /* Hero */
        .category-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            min-height: 460px;
            display: flex;
            align-items: center;
            padding: 60px 0 40px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 18, 0.88) 0%, rgba(13, 15, 18, 0.72) 50%, rgba(13, 15, 18, 0.9) 100%);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 800;
            font-family: var(--font-title);
            color: #fff;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .category-hero h1 .highlight {
            color: var(--accent-orange);
        }

        .category-hero .subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Data metrics */
        .metrics-bar {
            background-color: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 24px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .metric-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            transition: all 0.25s ease;
        }

        .metric-item:hover {
            border-color: var(--accent-orange);
            box-shadow: 0 0 20px rgba(255, 122, 0, 0.15);
        }

        .metric-value {
            font-size: 32px;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent-orange);
            line-height: 1.2;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        /* Content cards */
        .content-section {
            padding: 56px 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        .card-grid-mixed {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .card-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .card-item:hover {
            border-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .card-item.col-span-12 {
            grid-column: span 12;
        }

        .card-item.col-span-6 {
            grid-column: span 6;
        }

        .card-item.col-span-4 {
            grid-column: span 4;
        }

        .card-item.col-span-8 {
            grid-column: span 8;
        }

        .card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .card-item.col-span-12 .card-image {
            height: 320px;
        }

        .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-date {
            font-size: 12px;
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            background-color: rgba(255, 122, 0, 0.12);
            color: var(--accent-orange);
            border: 1px solid rgba(255, 122, 0, 0.25);
        }

        .card-tag.cyan {
            background-color: rgba(20, 224, 200, 0.1);
            color: var(--accent-cyan);
            border-color: rgba(20, 224, 200, 0.25);
        }

        .card-tag.pink {
            background-color: rgba(255, 45, 120, 0.1);
            color: var(--accent-pink);
            border-color: rgba(255, 45, 120, 0.25);
        }

        /* Deep content */
        .deep-content {
            background-color: var(--bg-secondary);
            padding: 56px 0;
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .deep-content .prose {
            max-width: 850px;
        }

        .deep-content .prose h2 {
            font-size: 24px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }

        .deep-content .prose h3 {
            font-size: 20px;
            font-weight: 600;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 12px;
            margin-top: 24px;
        }

        .deep-content .prose p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content .prose ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 16px;
        }

        .deep-content .prose ul li {
            padding-left: 20px;
            position: relative;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-size: 15px;
            line-height: 1.7;
        }

        .deep-content .prose ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--accent-orange);
            font-size: 14px;
        }

        /* FAQ */
        .faq-section {
            padding: 56px 0;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: var(--border-medium);
        }

        .faq-item.open {
            border-color: var(--accent-orange);
            box-shadow: 0 0 20px rgba(255, 122, 0, 0.12);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }

        .faq-question:hover {
            color: var(--accent-orange);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-medium);
            font-size: 16px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }

        .faq-item.open .faq-icon {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA Form */
        .cta-section {
            background-color: var(--bg-secondary);
            padding: 56px 0;
            border-top: 1px solid var(--border-subtle);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-left h2 {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-left p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .cta-left .stat-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            background-color: rgba(20, 224, 200, 0.08);
            border: 1px solid rgba(20, 224, 200, 0.25);
            border-radius: 20px;
            padding: 6px 16px;
        }

        .cta-form-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-top: 3px solid var(--accent-orange);
        }

        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all 0.25s ease;
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.15);
            outline: none;
        }

        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            margin-top: 8px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 360px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            font-family: var(--font-title);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--accent-orange);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

        .footer-bottom a:hover {
            color: var(--accent-orange);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .card-item.col-span-6 {
                grid-column: span 12;
            }

            .card-item.col-span-4 {
                grid-column: span 6;
            }

            .card-item.col-span-8 {
                grid-column: span 12;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: var(--nav-height);
                padding: 8px 0;
            }

            .site-header .container {
                flex-wrap: wrap;
                height: auto;
                gap: 8px;
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 8px 0 4px;
            }

            .nav-cta {
                margin-left: auto;
            }

            .category-hero {
                min-height: 380px;
                padding: 40px 0 32px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero .subtitle {
                font-size: 15px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .metric-value {
                font-size: 24px;
            }

            .content-section,
            .deep-content,
            .faq-section,
            .cta-section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .card-item.col-span-12 {
                grid-column: span 12;
            }

            .card-item.col-span-6 {
                grid-column: span 12;
            }

            .card-item.col-span-4 {
                grid-column: span 12;
            }

            .card-item.col-span-8 {
                grid-column: span 12;
            }

            .card-item.col-span-12 .card-image {
                height: 200px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }

            .logo-text {
                font-size: 18px;
            }

            .nav-tab {
                font-size: 13px;
                padding: 6px 12px;
            }

            .nav-cta .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }

            .category-hero {
                min-height: 320px;
                padding: 32px 0 24px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .metric-item {
                padding: 14px 10px;
            }

            .metric-value {
                font-size: 20px;
            }

            .metric-label {
                font-size: 12px;
            }

            .cta-form-card {
                padding: 20px;
            }

            .card-body {
                padding: 16px;
            }

            .card-title {
                font-size: 16px;
            }
        }