/* roulang page: index */
:root {
            --bg-deepest: #141210;
            --bg-main: #1B1815;
            --bg-card: #201C18;
            --bg-card-alt: #211D19;
            --bg-hover: #25211C;
            --primary: #F2A93B;
            --primary-hover: #F7B84C;
            --primary-soft: rgba(242, 169, 59, 0.12);
            --primary-border: rgba(242, 169, 59, 0.16);
            --primary-border-strong: rgba(242, 169, 59, 0.5);
            --accent: #E0445C;
            --accent-soft: rgba(224, 68, 92, 0.12);
            --text-warm: #F7F1E8;
            --text-secondary: #B8AD9C;
            --text-muted: #8A8173;
            --card-radius: 16px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.24);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.38);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deepest);
            color: var(--text-warm);
            margin: 0;
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: 1rem;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 64px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 96px 0;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(20, 18, 16, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(242, 169, 59, 0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-warm);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .logo-link .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1B1815;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo-link span {
            background: linear-gradient(90deg, var(--primary) 0%, #F7C86B 50%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 28px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--primary);
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-badge {
            background-color: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 0 0 rgba(224, 68, 92, 0.5); }
            50% { box-shadow: 0 0 0 6px rgba(224, 68, 92, 0); }
        }
        .btn-primary {
            background-color: var(--primary);
            color: #1B1815;
            font-weight: 700;
            padding: 11px 22px;
            border-radius: 16px;
            border: none;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(242, 169, 59, 0.35);
            color: #1B1815;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 16px;
            border: 1px solid var(--primary-border);
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            background-color: var(--primary-soft);
            border-color: var(--primary-border-strong);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .hamburger-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid rgba(242, 169, 59, 0.2);
            background-color: transparent;
            color: var(--primary);
            cursor: pointer;
            font-size: 1.3rem;
            transition: background-color 0.25s ease;
        }
        .hamburger-btn:hover {
            background-color: rgba(242, 169, 59, 0.1);
        }
        .mobile-nav {
            display: none;
            background-color: rgba(20, 18, 16, 0.98);
            border-bottom: 1px solid rgba(242, 169, 59, 0.15);
            padding: 12px 24px 20px;
        }
        .mobile-nav.open {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .mobile-nav a {
            color: var(--text-secondary);
            font-weight: 500;
            padding: 10px 12px;
            border-radius: 12px;
            transition: all 0.25s ease;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: rgba(242, 169, 59, 0.1);
            color: var(--primary);
        }
        .mobile-nav .btn-primary {
            justify-content: center;
            margin-top: 8px;
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
                flex: 1;
                justify-content: center;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
        }

        /* Cards */
        .card {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .card-img-wrapper {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img-wrapper img {
            transform: scale(1.04);
        }
        .card-body {
            padding: 20px 24px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .badge-accent {
            background-color: var(--accent);
            color: #fff;
        }
        .badge-primary {
            background-color: var(--primary);
            color: #1B1815;
        }
        .badge-highlight {
            background-color: rgba(247, 241, 232, 0.16);
            color: var(--text-warm);
        }

        /* Section headers */
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid var(--primary-border);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 12px;
            color: var(--text-warm);
        }
        .section-title .highlight {
            color: var(--primary);
            background: linear-gradient(90deg, var(--primary) 0%, #F7C86B 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            margin: 0;
        }

        /* Hero */
        .hero-section {
            position: relative;
            overflow: hidden;
            padding: 60px 0 70px;
        }
        .hero-bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 30%, transparent 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 30%, transparent 100%);
            z-index: 0;
        }
        .hero-glow {
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242,169,59,0.12) 0%, transparent 65%);
            z-index: 0;
            pointer-events: none;
        }
        .hero-glow-accent {
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(224,68,92,0.08) 0%, transparent 65%);
            z-index: 0;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .hero-content {
                grid-template-columns: 7fr 5fr;
                gap: 48px;
            }
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .hero-h1 {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 700;
            margin: 0;
            color: var(--text-warm);
        }
        .hero-h1 .highlight {
            color: var(--primary);
            background: linear-gradient(90deg, var(--primary) 0%, #F7C86B 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 600px;
            margin: 0;
        }
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 8px;
        }
        .hero-right {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--primary-border);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
            aspect-ratio: 4 / 3;
            background-color: var(--bg-card);
        }
        .hero-right img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-right .play-overlay {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 62px;
            height: 62px;
            border-radius: 50%;
            background-color: rgba(242, 169, 59, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1B1815;
            font-size: 1.4rem;
            box-shadow: 0 8px 24px rgba(242, 169, 59, 0.5);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .hero-right .play-overlay:hover {
            background-color: var(--primary-hover);
            transform: translate(-50%, -50%) scale(1.08);
        }
        .hero-metrics {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 40px;
        }
        @media (min-width: 640px) {
            .hero-metrics {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .metric-item {
            background-color: rgba(32, 28, 24, 0.8);
            border: 1px solid var(--primary-border);
            border-radius: 16px;
            padding: 20px 18px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .metric-item:hover {
            border-color: var(--primary-border-strong);
            background-color: var(--bg-hover);
        }
        .metric-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            font-weight: 500;
        }

        /* Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .service-card .card-img-wrapper {
            aspect-ratio: 16 / 9;
            background-color: #2A251F;
        }
        .service-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-warm);
        }
        .service-card .card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 10px;
        }

        /* Comparison */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 1024px) {
            .comparison-wrapper {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        .comparison-panel {
            border-radius: var(--card-radius);
            padding: 28px 24px;
            border: 1px solid var(--primary-border);
            background-color: var(--bg-card);
        }
        .comparison-panel.highlight-panel {
            border-color: var(--primary-border-strong);
            background: linear-gradient(180deg, rgba(242,169,59,0.08) 0%, var(--bg-card) 100%);
            position: relative;
        }
        .comparison-panel.highlight-panel::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 20px;
            background-color: var(--primary);
            color: #1B1815;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
        }
        .comparison-panel h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 0 20px;
            color: var(--text-warm);
        }
        .comparison-row {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(138, 129, 115, 0.15);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .comparison-row:last-child {
            border-bottom: none;
        }
        .comparison-row i {
            color: var(--primary);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        .comparison-row i.fa-times-circle {
            color: var(--text-muted);
        }

        /* Milestones */
        .timeline {
            position: relative;
            padding-left: 28px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 36px;
            padding-left: 16px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 3px solid var(--bg-deepest);
            box-shadow: 0 0 0 2px var(--primary-border-strong);
        }
        .timeline-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-warm);
        }
        .timeline-item .timeline-date {
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* News / CMS */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .news-card .card-img-wrapper {
            aspect-ratio: 16 / 9;
            background-color: #2A251F;
        }
        .news-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card .card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--text-warm);
        }
        .news-card .card-body .news-excerpt {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0 0 12px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background-color: var(--bg-card);
            border: 1px dashed rgba(242, 169, 59, 0.25);
            border-radius: var(--card-radius);
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Guarantees */
        .guarantee-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .guarantee-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .guarantee-card {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            padding: 24px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .guarantee-card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .guarantee-card .g-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            color: var(--primary);
            font-size: 1.3rem;
            transition: all 0.3s ease;
        }
        .guarantee-card:hover .g-icon {
            background-color: var(--primary);
            color: #1B1815;
        }
        .guarantee-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-warm);
        }
        .guarantee-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Quick Answers */
        .quick-answers {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 768px) {
            .quick-answers {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .quick-answer-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            padding: 20px;
            transition: all 0.3s ease;
        }
        .quick-answer-card:hover {
            border-color: var(--primary-border-strong);
            background-color: var(--bg-hover);
        }
        .quick-answer-card .qa-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background-color: var(--primary-soft);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
        }
        .quick-answer-card h3 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-warm);
        }
        .quick-answer-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--primary-border-strong);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 22px;
            background-color: transparent;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-warm);
            text-align: left;
            transition: background-color 0.3s ease;
        }
        .faq-question:hover {
            background-color: var(--bg-hover);
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.8rem;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-toggle {
            transform: rotate(180deg);
            background-color: var(--primary);
            color: #1B1815;
        }
        .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* Form Section */
        .form-section {
            background-color: var(--bg-main);
            border-top: 1px solid var(--primary-border);
            border-bottom: 1px solid var(--primary-border);
            position: relative;
            overflow: hidden;
        }
        .form-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(242,169,59,0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 1024px) {
            .form-grid {
                grid-template-columns: 1fr 1fr;
                gap: 60px;
            }
        }
        .form-info h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-warm);
            margin: 0 0 16px;
        }
        .form-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 20px;
        }
        .form-info .form-features {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .form-info .form-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .form-info .form-features li i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .form-box {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: 20px;
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }
        .form-box .form-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-warm);
            margin: 0 0 8px;
        }
        .form-box .form-subtitle {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 24px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 13px 16px;
            background-color: #1E1A16;
            border: 1px solid rgba(138, 129, 115, 0.3);
            border-radius: 12px;
            color: var(--text-warm);
            font-size: 0.9rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-group input::placeholder {
            color: var(--text-muted);
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(242, 169, 59, 0.15);
        }
        .form-group input.error {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(224, 68, 92, 0.15);
        }
        .form-group .error-msg {
            font-size: 0.72rem;
            color: var(--accent);
            margin-top: 4px;
            display: none;
        }
        .form-group .error-msg.show {
            display: block;
        }
        .form-success {
            display: none;
            padding: 20px;
            background-color: rgba(242, 169, 59, 0.1);
            border: 1px solid var(--primary-border-strong);
            border-radius: 12px;
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 500;
            text-align: center;
        }
        .form-success.show {
            display: block;
        }

        /* Topic Entry */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .topic-card {
            position: relative;
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid var(--primary-border);
            background-color: var(--bg-card);
            aspect-ratio: 16 / 10;
            display: flex;
            align-items: flex-end;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .topic-card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .topic-card img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.7;
            transition: opacity 0.3s ease;
        }
        .topic-card:hover img {
            opacity: 0.85;
        }
        .topic-card .topic-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 24px;
            background: linear-gradient(0deg, rgba(20,18,16,0.95) 0%, rgba(20,18,16,0.4) 60%, transparent 100%);
        }
        .topic-card .topic-overlay h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-warm);
            margin: 0 0 4px;
        }
        .topic-card .topic-overlay p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* Trust Badges */
        .trust-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px 32px;
        }
        .trust-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: 999px;
            padding: 12px 24px;
            transition: all 0.3s ease;
        }
        .trust-badge:hover {
            border-color: var(--primary-border-strong);
            background-color: var(--bg-hover);
        }
        .trust-badge i {
            color: var(--primary);
            font-size: 1rem;
        }
        .trust-badge span {
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        /* Data Dashboard Extension */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .data-card {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            padding: 24px 18px;
            text-align: center;
        }
        .data-card .data-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .data-card .data-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.4px;
        }
        .data-card .data-trend {
            font-size: 0.72rem;
            color: var(--accent);
            font-weight: 600;
            margin-top: 8px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Reviews */
        .review-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .review-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .review-card {
            background-color: var(--bg-card);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            padding: 24px;
            transition: all 0.3s ease;
        }
        .review-card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card-hover);
        }
        .review-stars {
            color: var(--primary);
            font-size: 0.85rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .review-author .author-name {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-warm);
        }
        .review-author .author-date {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* Bottom CTA Banner */
        .cta-banner {
            position: relative;
            overflow: hidden;
            background-color: var(--bg-main);
            border: 1px solid var(--primary-border);
            border-radius: 24px;
            padding: 48px 32px;
            text-align: center;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 240px;
            background: radial-gradient(ellipse, rgba(242,169,59,0.15) 0%, transparent 70%);
        }
        .cta-banner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-warm);
            margin: 0 0 12px;
            position: relative;
        }
        .cta-banner h2 .highlight {
            color: var(--primary);
        }
        .cta-banner p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 24px;
            position: relative;
            line-height: 1.7;
        }
        .cta-banner .btn-primary {
            font-size: 1rem;
            padding: 14px 32px;
            position: relative;
        }

        /* Footer */
        .site-footer {
            background-color: #0F0D0B;
            border-top: 1px solid rgba(242, 169, 59, 0.12);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 3fr 2fr 2fr;
                gap: 48px;
            }
        }
        .footer-brand .logo-link {
            font-size: 1.05rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
            max-width: 320px;
        }
        .footer-col h3 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-warm);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(138, 129, 115, 0.15);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.76rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Responsive fine-tuning */
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .hero-h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .btn-primary, .btn-secondary {
                padding: 10px 16px;
                font-size: 0.82rem;
            }
            .card-body {
                padding: 16px 18px;
            }
            .comparison-panel {
                padding: 20px 16px;
            }
            .form-box {
                padding: 24px 18px;
            }
            .cta-banner {
                padding: 36px 20px;
            }
            .cta-banner h2 {
                font-size: 1.4rem;
            }
            .trust-badge {
                padding: 10px 18px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deepest: #141210;
            --bg-main: #1B1815;
            --bg-card: #201C18;
            --bg-card-alt: #211D19;
            --bg-hover: #25211C;
            --primary: #F2A93B;
            --primary-hover: #F7B84C;
            --primary-soft: rgba(242, 169, 59, 0.12);
            --primary-border: rgba(242, 169, 59, 0.16);
            --primary-border-strong: rgba(242, 169, 59, 0.5);
            --accent: #E0445C;
            --accent-soft: rgba(224, 68, 92, 0.12);
            --text-warm: #F7F1E8;
            --text-secondary: #B8AD9C;
            --text-muted: #8A8173;
            --card-radius: 16px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.24);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.38);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deepest);
            color: var(--text-warm);
            margin: 0;
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: 1rem;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 64px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 96px 0;
            }
        }
        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(20, 18, 16, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(242, 169, 59, 0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-warm);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .logo-link .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1B1815;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo-link span:last-child {
            background: linear-gradient(90deg, var(--primary) 0%, #F7C86B 50%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 28px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--primary);
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-badge {
            background-color: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.75; }
        }
        .btn-primary {
            background-color: var(--primary);
            color: #1B1815;
            font-weight: 700;
            padding: 11px 22px;
            border-radius: 16px;
            border: none;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(242, 169, 59, 0.35);
            color: #1B1815;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 16px;
            border: 1px solid var(--primary-border);
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            background-color: var(--primary-soft);
            border-color: var(--primary-border-strong);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .hamburger-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--bg-card);
            border: 1px solid var(--primary-border);
            color: var(--text-warm);
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.25s ease;
        }
        .hamburger-btn:hover {
            background: var(--bg-hover);
            border-color: var(--primary-border-strong);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 16px 24px 24px;
            gap: 12px;
            background-color: rgba(20, 18, 16, 0.98);
            border-bottom: 1px solid var(--primary-border);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            color: var(--text-secondary);
            font-size: 1rem;
            font-weight: 500;
            padding: 8px 0;
            border-bottom: 1px solid rgba(242, 169, 59, 0.06);
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--primary);
        }
        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
            .nav-badge {
                display: inline-block;
            }
        }
        @media (max-width: 1023px) {
            .nav-desktop {
                display: none;
            }
            .nav-badge {
                display: none;
            }
        }
        /* Footer */
        .site-footer {
            background-color: var(--bg-deepest);
            border-top: 1px solid var(--primary-border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 48px;
            }
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-top: 12px;
            max-width: 360px;
        }
        .footer-col h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-warm);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(242, 169, 59, 0.08);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin: 0;
        }
        /* Category page specific */
        .category-hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #1B1815 0%, #141210 100%);
            border-bottom: 1px solid var(--primary-border);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(242, 169, 59, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -140px;
            left: -60px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(224, 68, 92, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero-inner {
            position: relative;
            z-index: 1;
            padding: 48px 0;
        }
        .category-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
        }
        .category-hero p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0;
            line-height: 1.8;
        }
        .category-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .category-breadcrumb a {
            color: var(--text-muted);
        }
        .category-breadcrumb a:hover {
            color: var(--primary);
        }
        .category-breadcrumb .separator {
            color: rgba(242, 169, 59, 0.4);
        }
        .category-breadcrumb .current {
            color: var(--primary);
        }
        @media (min-width: 768px) {
            .category-hero h1 {
                font-size: 2.4rem;
            }
            .category-hero-inner {
                padding: 64px 0;
            }
        }
        @media (min-width: 1024px) {
            .category-hero h1 {
                font-size: 2.8rem;
            }
        }
        /* Filter bar */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            padding: 16px 0;
        }
        .filter-chip {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.25s ease;
            border: 1px solid var(--primary-border);
            background: var(--bg-card);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--primary-border-strong);
            color: var(--primary);
            background: var(--bg-hover);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #1B1815;
            border-color: var(--primary);
            font-weight: 600;
        }
        .filter-chip.accent {
            border-color: rgba(224, 68, 92, 0.4);
            color: var(--accent);
        }
        .filter-chip.accent:hover {
            background: var(--accent-soft);
            border-color: var(--accent);
        }
        /* Content list cards */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--primary-border);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .content-card .card-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: var(--bg-card-alt);
        }
        .content-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .content-card .card-cover .cover-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(20, 18, 16, 0.1) 0%, rgba(20, 18, 16, 0.65) 100%);
            pointer-events: none;
        }
        .content-card .card-cover .status-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .content-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-title {
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-warm);
            margin: 0 0 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-title a:hover {
            color: var(--primary);
        }
        .content-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(242, 169, 59, 0.08);
            padding-top: 12px;
        }
        .content-card .card-meta .card-category {
            color: var(--primary);
            font-weight: 500;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .status-badge.hot {
            background: var(--accent);
            color: #fff;
        }
        .status-badge.quality {
            background: var(--primary);
            color: #1B1815;
        }
        .status-badge.hd {
            background: rgba(247, 241, 232, 0.15);
            color: var(--text-warm);
            border: 1px solid rgba(247, 241, 232, 0.25);
        }
        /* Empty state */
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px dashed var(--primary-border);
        }
        .empty-state i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
            opacity: 0.6;
        }
        /* Stats strip */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 768px) {
            .stats-strip {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--primary-border);
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .stat-item:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card);
        }
        .stat-item .stat-number {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }
        .stat-item .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        /* Topic entries */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .topic-card {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--primary-border);
            padding: 20px;
            transition: all 0.3s ease;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .topic-card:hover {
            border-color: var(--primary-border-strong);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .topic-card .topic-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .topic-card h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-warm);
            margin: 0 0 6px;
        }
        .topic-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--primary-border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--primary-border-strong);
        }
        .faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-warm);
            gap: 12px;
            user-select: none;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            margin: 0;
            line-height: 1.8;
        }
        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #1B1815 0%, #201C18 50%, #1B1815 100%);
            border: 1px solid var(--primary-border);
            border-radius: var(--card-radius);
            padding: 40px 28px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(242, 169, 59, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section h2 .highlight {
            color: var(--primary);
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            max-width: 540px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 1;
            line-height: 1.8;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 640px) {
            .cta-section {
                padding: 56px 40px;
            }
            .cta-section h2 {
                font-size: 2rem;
            }
            .cta-section .cta-actions {
                flex-direction: row;
                gap: 16px;
            }
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section-title .highlight {
            color: var(--primary);
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0 0 32px;
            max-width: 600px;
            line-height: 1.8;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 1.9rem;
            }
        }

/* roulang page: article */
:root {
            --bg-deepest: #141210;
            --bg-main: #1B1815;
            --bg-card: #201C18;
            --bg-card-alt: #211D19;
            --bg-hover: #25211C;
            --primary: #F2A93B;
            --primary-hover: #F7B84C;
            --primary-soft: rgba(242, 169, 59, 0.12);
            --primary-border: rgba(242, 169, 59, 0.16);
            --primary-border-strong: rgba(242, 169, 59, 0.5);
            --accent: #E0445C;
            --accent-soft: rgba(224, 68, 92, 0.12);
            --text-warm: #F7F1E8;
            --text-secondary: #B8AD9C;
            --text-muted: #8A8173;
            --card-radius: 16px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.24);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.38);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deepest);
            color: var(--text-warm);
            margin: 0;
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: 1rem;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 64px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 96px 0;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(20, 18, 16, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(242, 169, 59, 0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-warm);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .logo-link .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1B1815;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo-link span {
            background: linear-gradient(90deg, var(--primary) 0%, #F7C86B 50%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 28px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--primary);
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-badge {
            background-color: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            white-space: nowrap;
            animation: pulse-badge 2s infinite;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #1B1815;
            font-weight: 700;
            padding: 11px 22px;
            border-radius: 16px;
            border: none;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(242, 169, 59, 0.35);
            color: #1B1815;
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 16px;
            border: 1px solid var(--primary-border);
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            background-color: var(--primary-soft);
            border-color: var(--primary-border-strong);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .hamburger-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid var(--primary-border);
            border-radius: 12px;
            color: var(--text-warm);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .hamburger-btn:hover {
            background-color: var(--primary-soft);
            border-color: var(--primary-border-strong);
            color: var(--primary);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 0;
            background-color: rgba(20, 18, 16, 0.98);
            border-top: 1px solid rgba(242, 169, 59, 0.12);
            padding: 12px 24px 20px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            padding: 12px 0;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(242, 169, 59, 0.08);
        }
        .mobile-nav a.active,
        .mobile-nav a:hover {
            color: var(--primary);
        }
        .mobile-nav .btn-primary {
            margin-top: 16px;
            justify-content: center;
        }
        .mobile-nav .nav-badge {
            align-self: flex-start;
            margin-top: 12px;
        }
        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger-btn {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
        }
        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }

        /* Article Page Layout */
        .article-page {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        @media (min-width: 1024px) {
            .article-page {
                grid-template-columns: minmax(0, 1fr) 320px;
                gap: 48px;
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        .breadcrumb {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(242, 169, 59, 0.1);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 0.7rem;
        }

        .article-main {
            min-width: 0;
        }
        .article-header {
            margin-bottom: 24px;
        }
        .article-header h1 {
            font-size: 1.9rem;
            line-height: 1.3;
            margin: 0 0 16px;
            color: var(--text-warm);
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .article-header h1 span {
            color: var(--primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--primary);
            width: 16px;
        }
        .article-excerpt {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
            background-color: var(--bg-card-alt);
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            border-radius: 12px;
            margin-bottom: 24px;
        }
        .article-cover {
            margin-bottom: 32px;
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background-color: var(--bg-card);
            aspect-ratio: 16 / 9;
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-content {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-warm);
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-warm);
            margin-top: 2em;
            margin-bottom: 1em;
            font-weight: 700;
            line-height: 1.4;
        }
        .article-content h2 {
            font-size: 1.6rem;
        }
        .article-content h3 {
            font-size: 1.3rem;
        }
        .article-content h4 {
            font-size: 1.1rem;
        }
        .article-content p {
            margin: 0 0 1.4em;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--primary-hover);
        }
        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .article-content blockquote {
            margin: 24px 0;
            padding: 16px 24px;
            background-color: var(--bg-card-alt);
            border-left: 3px solid var(--accent);
            border-radius: 12px;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content code {
            background-color: var(--bg-hover);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-content pre {
            background-color: #0F0D0B;
            padding: 20px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-content pre code {
            background: none;
            padding: 0;
            color: var(--text-warm);
        }

        .empty-article {
            padding: 48px 24px;
            background-color: var(--bg-card);
            border-radius: var(--card-radius);
            text-align: center;
            color: var(--text-muted);
            border: 1px solid var(--primary-border);
        }
        .empty-article .btn-secondary {
            margin-top: 16px;
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background-color: var(--bg-card);
            border-radius: var(--card-radius);
            padding: 24px;
            border: 1px solid var(--primary-border);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h2,
        .sidebar-card h3 {
            font-size: 1.1rem;
            color: var(--text-warm);
            margin: 0 0 16px;
            font-weight: 700;
        }
        .sidebar-card h2 i,
        .sidebar-card h3 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .related-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .related-item {
            display: flex;
            gap: 14px;
            padding: 12px;
            background-color: var(--bg-card-alt);
            border-radius: 12px;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .related-item:hover {
            border-color: var(--primary-border-strong);
            background-color: var(--bg-hover);
            transform: translateY(-2px);
        }
        .related-item img {
            width: 88px;
            height: 58px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .related-item .related-info {
            min-width: 0;
        }
        .related-item .related-info h4 {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-warm);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .related-item .related-info p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin: 0;
        }
        .stat-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .stat-item {
            flex: 1;
            min-width: 0;
            text-align: center;
            background-color: var(--bg-card-alt);
            padding: 16px 8px;
            border-radius: 12px;
        }
        .stat-item .stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--bg-main);
            border-top: 1px solid rgba(242, 169, 59, 0.1);
            border-bottom: 1px solid rgba(242, 169, 59, 0.1);
            text-align: center;
        }
        .cta-section .cta-inner {
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-section h2 {
            font-size: 1.9rem;
            color: var(--text-warm);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .cta-section h2 span {
            color: var(--primary);
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-deepest);
            border-top: 1px solid rgba(242, 169, 59, 0.12);
            padding: 48px 0 24px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 40px;
            }
        }
        .footer-brand .logo-link {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
        }
        .footer-col h3 {
            font-size: 1rem;
            color: var(--text-warm);
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(242, 169, 59, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }