/* roulang page: index */
:root {
            --brand-500: #f59e0b;
            --brand-600: #d97706;
            --brand-700: #b45309;
            --dark-800: #0f172a;
            --dark-900: #020617;
            --glass-bg: rgba(15, 23, 42, 0.65);
            --glass-border: rgba(245, 158, 11, 0.15);
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(245, 158, 11, 0.15);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--dark-900);
            color: #f1f5f9;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        input:focus-visible,
        textarea:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0.75rem 0;
            background: rgba(2, 6, 23, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--glass-border);
            transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
        }
        .site-header.scrolled {
            background: rgba(2, 6, 23, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            padding: 0.4rem 0;
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--brand-500);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            font-weight: 500;
            color: #cbd5e1;
            transition: background 0.3s ease, color 0.3s ease;
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a:focus-visible {
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
        }
        .nav-links li a.active {
            background: rgba(245, 158, 11, 0.18);
            color: #fbbf24;
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a !important;
            font-weight: 700;
            font-size: 0.9rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
            color: #0f172a !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #f1f5f9;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 0.5rem;
            transition: background 0.3s ease;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(2, 6, 23, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--glass-border);
                padding: 1rem 1.25rem;
                gap: 0.25rem;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                width: 100%;
            }
            .nav-links li a.nav-cta {
                margin-top: 0.5rem;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
            .site-header .header-inner {
                flex-wrap: wrap;
            }
            .site-logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 520px) {
            .site-logo {
                font-size: 1rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }
            .nav-cta {
                padding: 0.4rem 0.9rem;
                font-size: 0.8rem;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 7rem 0 5rem;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(2, 6, 23, 0.7) 0%, rgba(2, 6, 23, 0.85) 50%, rgba(2, 6, 23, 0.95) 100%);
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1.2rem;
            border-radius: 9999px;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.25);
            color: #fbbf24;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 1.5rem;
        }
        .hero-title {
            font-size: clamp(2.2rem, 7vw, 4.2rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.01em;
            background: linear-gradient(135deg, #ffffff 0%, #fbbf24 50%, #f59e0b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.2rem;
        }
        .hero-sub {
            font-size: clamp(1rem, 2.5vw, 1.3rem);
            color: #94a3b8;
            max-width: 680px;
            margin: 0 auto 2.2rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            font-weight: 700;
            font-size: 1.05rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(245, 158, 11, 0.4);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #e2e8f0;
            font-weight: 600;
            font-size: 1.05rem;
            backdrop-filter: blur(4px);
            transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(245, 158, 11, 0.4);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem 3.5rem;
            margin-top: 3.5rem;
            padding-top: 2.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fbbf24;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: #64748b;
            margin-top: 0.2rem;
        }
        @media (max-width: 767px) {
            .hero-section {
                min-height: 90vh;
                padding: 6rem 0 3rem;
            }
            .hero-stats {
                gap: 1.5rem 2rem;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                min-height: 85vh;
                padding: 5rem 0 2.5rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                max-width: 280px;
            }
        }

        /* ===== Section Shared ===== */
        .section-pad {
            padding: 5rem 0;
        }
        @media (max-width: 767px) {
            .section-pad {
                padding: 3rem 0;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 1rem;
            border-radius: 9999px;
            background: rgba(245, 158, 11, 0.08);
            border: 1px solid rgba(245, 158, 11, 0.15);
            color: #fbbf24;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 0.75rem;
            letter-spacing: 0.04em;
        }
        .section-title {
            font-size: clamp(1.6rem, 4vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .section-desc {
            font-size: 1.05rem;
            color: #94a3b8;
            max-width: 600px;
            line-height: 1.7;
        }
        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, #f59e0b, #d97706);
            border-radius: 4px;
            margin-top: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .text-center .section-divider {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Cards ===== */
        .card-glass {
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
            overflow: hidden;
        }
        .card-glass:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .card-glass .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .card-glass .card-body {
            padding: 1.5rem;
        }
        .card-glass .card-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 9999px;
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.6rem;
        }
        .card-glass .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #f1f5f9;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .card-glass .card-text {
            font-size: 0.9rem;
            color: #94a3b8;
            line-height: 1.6;
            margin-bottom: 0.5rem;
        }
        .card-glass .card-meta {
            font-size: 0.8rem;
            color: #64748b;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .card-glass .card-meta i {
            color: var(--brand-500);
        }

        /* ===== Feature / Icon Blocks ===== */
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(217, 119, 6, 0.08));
            border: 1px solid rgba(245, 158, 11, 0.15);
            font-size: 1.5rem;
            color: #fbbf24;
            margin-bottom: 1rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover .feature-icon {
            transform: scale(1.05);
            box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
        }

        /* ===== Category Grid ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1023px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 639px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--glass-border);
            transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
            background: rgba(15, 23, 42, 0.5);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            transition: transform 0.6s ease;
        }
        .category-card:hover img {
            transform: scale(1.05);
        }
        .category-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(2, 6, 23, 0.92) 0%, rgba(2, 6, 23, 0.3) 60%, transparent 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 1.8rem 1.5rem 1.5rem;
            width: 100%;
        }
        .category-card .cat-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.3rem;
        }
        .category-card .cat-content p {
            font-size: 0.9rem;
            color: #94a3b8;
            margin-bottom: 0.75rem;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #fbbf24;
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap 0.3s ease;
        }
        .category-card .cat-link:hover {
            gap: 0.7rem;
        }

        /* ===== Content Grid (CMS) ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1023px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 639px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1023px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .stat-card {
            text-align: center;
            padding: 2rem 1rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.4);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(8px);
            transition: border-color 0.3s ease, transform 0.3s ease;
        }
        .stat-card:hover {
            border-color: rgba(245, 158, 11, 0.25);
            transform: translateY(-3px);
        }
        .stat-card .stat-num {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: #94a3b8;
            margin-top: 0.4rem;
        }

        /* ===== Steps / Flow ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        @media (max-width: 1023px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 639px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }
        .step-card {
            text-align: center;
            padding: 2rem 1.5rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.3);
            border: 1px solid var(--glass-border);
            position: relative;
            transition: border-color 0.3s ease, transform 0.3s ease;
        }
        .step-card:hover {
            border-color: rgba(245, 158, 11, 0.2);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            font-weight: 900;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #f1f5f9;
            margin-bottom: 0.5rem;
        }
        .step-card p {
            font-size: 0.9rem;
            color: #94a3b8;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.4);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: #e2e8f0;
            font-size: 1rem;
            background: none;
            width: 100%;
            text-align: left;
            transition: color 0.3s ease;
            gap: 1rem;
        }
        .faq-question:hover {
            color: #fbbf24;
        }
        .faq-question i {
            transition: transform 0.4s ease;
            color: var(--brand-500);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.5rem;
            color: #94a3b8;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(2, 6, 23, 0.9)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(2, 6, 23, 0.95);
            border-top: 1px solid var(--glass-border);
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: #64748b;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: #64748b;
            transition: color 0.3s ease;
        }
        .footer-col ul li a:hover {
            color: #fbbf24;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: #475569;
        }
        .footer-bottom a {
            color: #64748b;
        }
        .footer-bottom a:hover {
            color: #fbbf24;
        }
        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
            z-index: 900;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s ease;
            cursor: pointer;
            border: none;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.45);
        }

        /* ===== Accessibility & Misc ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .bg-fade {
            background: linear-gradient(180deg, rgba(2, 6, 23, 0) 0%, rgba(2, 6, 23, 0.6) 100%);
        }
        .text-shadow {
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #f97316;
            --primary-dark: #ea580c;
            --primary-light: #fb923c;
            --secondary: #1e293b;
            --accent: #06b6d4;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #1e293b;
            --text-white: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-glass: rgba(255, 255, 255, 0.08);
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-card: 1.25rem;
            --radius-btn: 2rem;
            --radius-sm: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            background: var(--bg-dark);
            color: var(--text-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding: 0 2.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding: 0 3rem;
            }
        }

        /* ===== 玻璃透明导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid var(--border-glass);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(15, 23, 42, 0.88);
            box-shadow: 0 4px 40px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            transition: var(--transition);
        }

        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }

        .site-logo:hover {
            color: var(--primary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-btn);
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 15px rgba(249, 115, 22, 0.35);
        }

        .nav-links li a.active:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 25px rgba(249, 115, 22, 0.5);
        }

        .nav-links li a.nav-cta {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 0.55rem 1.4rem;
            box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
        }

        .nav-links li a.nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 25px rgba(249, 115, 22, 0.5);
            transform: translateY(-1px);
        }

        .nav-links li a.nav-cta i {
            font-size: 0.85rem;
        }

        .nav-toggle {
            display: none;
            background: none;
            color: #fff;
            font-size: 1.6rem;
            padding: 0.4rem;
            border-radius: 0.5rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(15, 23, 42, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1.2rem 1.5rem 2rem;
                gap: 0.4rem;
                border-bottom: 1px solid var(--border-glass);
                box-shadow: var(--shadow-glass);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 1.5rem 1.5rem;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links li a {
                width: 100%;
                padding: 0.75rem 1.2rem;
                font-size: 1rem;
                border-radius: 0.75rem;
            }

            .nav-links li a.nav-cta {
                margin-top: 0.4rem;
                justify-content: center;
            }

            .nav-toggle {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.7) 0%, rgba(15, 23, 42, 0.3) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 8rem 1.5rem 5rem;
            text-align: center;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            pointer-events: none;
        }

        .hero-content {
            max-width: 820px;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(249, 115, 22, 0.2);
            border: 1px solid rgba(249, 115, 22, 0.3);
            border-radius: var(--radius-btn);
            padding: 0.4rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 1.5rem;
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-section h1 {
            font-size: clamp(2.6rem, 7vw, 4.2rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #fff;
            text-shadow: 0 2px 40px rgba(0, 0, 0, 0.5);
        }

        .hero-section h1 span {
            color: var(--primary);
            background: linear-gradient(135deg, #f97316, #fb923c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-section p {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: rgba(255, 255, 255, 0.75);
            margin-top: 1.2rem;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .hero-actions {
            margin-top: 2.2rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.4rem;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-btn);
            box-shadow: 0 8px 30px rgba(249, 115, 22, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 12px 40px rgba(249, 115, 22, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.4rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-btn);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(249, 115, 22, 0.1);
            transform: translateY(-2px);
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 5rem 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 6rem 0;
            }
        }

        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-title h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            letter-spacing: -0.015em;
            color: #fff;
        }

        .section-title h2 i {
            color: var(--primary);
        }

        .section-title p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0.8rem auto 0;
            font-size: 1.05rem;
        }

        .section-title .title-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(249, 115, 22, 0.12);
            border: 1px solid rgba(249, 115, 22, 0.2);
            border-radius: var(--radius-btn);
            padding: 0.3rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 0.8rem;
            letter-spacing: 0.03em;
        }

        /* ===== 直播频道 ===== */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 1.2rem;
        }

        .channel-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.6rem 1rem;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .channel-card:hover {
            transform: translateY(-4px);
            border-color: rgba(249, 115, 22, 0.3);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
        }

        .channel-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 0.8rem;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .channel-card:hover .icon-wrap {
            background: rgba(249, 115, 22, 0.2);
            transform: scale(1.05);
        }

        .channel-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.2rem;
        }

        .channel-card span {
            font-size: 0.75rem;
            color: var(--text-dim);
        }

        .channel-card .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #ef4444;
            margin-right: 0.3rem;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }

        /* ===== 热门赛事卡片 ===== */
        .match-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
        }

        .match-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: var(--transition);
        }

        .match-card:hover {
            transform: translateY(-4px);
            border-color: rgba(249, 115, 22, 0.2);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .match-card .card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .match-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .match-card:hover .card-img img {
            transform: scale(1.06);
        }

        .match-card .card-img .overlay-tag {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            background: rgba(239, 68, 68, 0.9);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: var(--radius-btn);
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        .match-card .card-img .overlay-tag i {
            font-size: 0.5rem;
        }

        .match-card .card-body {
            padding: 1.2rem 1.4rem 1.5rem;
        }

        .match-card .card-body .league {
            font-size: 0.75rem;
            color: var(--text-dim);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            font-weight: 600;
        }

        .match-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0.3rem 0 0.4rem;
        }

        .match-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
        }

        .match-card .card-body .meta i {
            width: 14px;
            color: var(--primary);
        }

        .match-card .card-body .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1.2rem;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
        }

        .match-card .card-body .btn-sm:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
        }

        /* ===== 优势板块 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.8rem;
        }

        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem 1.8rem;
            text-align: center;
            transition: var(--transition);
        }

        .advantage-card:hover {
            border-color: rgba(6, 182, 212, 0.25);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .advantage-card .adv-icon {
            width: 64px;
            height: 64px;
            border-radius: 1rem;
            background: rgba(6, 182, 212, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.8rem;
            color: var(--accent);
            transition: var(--transition);
        }

        .advantage-card:hover .adv-icon {
            background: rgba(6, 182, 212, 0.18);
            transform: scale(1.06);
        }

        .advantage-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.4rem;
        }

        .advantage-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 赛程表 ===== */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .schedule-item {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            padding: 1rem 1.5rem;
            transition: var(--transition);
        }

        .schedule-item:hover {
            border-color: rgba(249, 115, 22, 0.2);
            background: rgba(30, 41, 59, 0.8);
        }

        .schedule-item .time {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            min-width: 60px;
        }

        .schedule-item .teams {
            flex: 1;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
        }

        .schedule-item .league-tag {
            font-size: 0.7rem;
            color: var(--text-dim);
            background: rgba(100, 116, 139, 0.15);
            padding: 0.2rem 0.8rem;
            border-radius: var(--radius-btn);
        }

        .schedule-item .status {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 1rem;
            border-radius: var(--radius-btn);
        }

        .schedule-item .status.live {
            background: rgba(239, 68, 68, 0.15);
            color: #ef4444;
        }

        .schedule-item .status.upcoming {
            background: rgba(6, 182, 212, 0.12);
            color: var(--accent);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 1.5rem;
            text-align: center;
        }

        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem 1rem;
            transition: var(--transition);
        }

        .stat-item:hover {
            border-color: rgba(249, 115, 22, 0.2);
            transform: translateY(-2px);
        }

        .stat-item .number {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 740px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.6rem;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            list-style: none;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.85rem;
        }

        .faq-item[open] summary i {
            transform: rotate(180deg);
        }

        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-item .faq-answer {
            padding: 0 1.6rem 1.3rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            border-top: 1px solid var(--border-glass);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(249, 115, 22, 0.08) 0%, rgba(6, 182, 212, 0.06) 100%);
            border: 1px solid var(--border-glass);
            border-radius: 2rem;
            padding: 3.5rem 2.5rem;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
        }

        .cta-section p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0.6rem auto 1.8rem;
            font-size: 1.02rem;
        }

        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: rgba(15, 23, 42, 0.6);
            border-top: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
            padding: 4rem 0 1.5rem;
            margin-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 2.5rem;
        }

        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-brand .logo-text i {
            color: var(--primary);
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-top: 0.8rem;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 3px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-glass);
            font-size: 0.78rem;
            color: var(--text-dim);
        }

        .footer-bottom a {
            color: var(--text-muted);
            border-bottom: 1px solid transparent;
        }

        .footer-bottom a:hover {
            color: var(--primary-light);
            border-color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                padding: 7rem 1.2rem 3.5rem;
            }

            .section-padding {
                padding: 3.5rem 0;
            }

            .match-grid {
                grid-template-columns: 1fr;
            }

            .channel-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
                gap: 0.8rem;
            }

            .advantage-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: 1.5rem;
            }

            .schedule-item {
                flex-wrap: wrap;
                gap: 0.6rem;
                padding: 0.8rem 1rem;
            }

            .schedule-item .time {
                min-width: auto;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 60px;
            }

            .site-logo {
                font-size: 1.25rem;
            }

            .hero-section h1 {
                font-size: 2rem;
            }

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

            .match-card .card-img {
                height: 140px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 杂项 ===== */
        .bg-gradient-section {
            background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(30, 41, 59, 0.5) 100%);
        }

        .text-gradient {
            background: linear-gradient(135deg, #f97316, #fb923c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .focus-ring:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .glass-card {
            background: rgba(30, 41, 59, 0.6);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
        }

/* roulang page: article */
:root {
            --color-primary: #3d8b5f;
            --color-primary-dark: #2d6f4a;
            --color-primary-light: #8fc8a5;
            --color-accent: #f68b1a;
            --color-accent-dark: #bf550f;
            --color-bg: #f8faf9;
            --color-bg-alt: #f0f7f4;
            --color-text: #1a1f2e;
            --color-text-muted: #5e6b7e;
            --color-border: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.5);
            transition: var(--transition);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--color-primary-dark);
            letter-spacing: -0.3px;
        }

        .site-logo i {
            font-size: 1.8rem;
            color: var(--color-accent);
        }

        .site-logo span {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: var(--transition);
            position: relative;
            gap: 6px;
        }

        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(61, 139, 95, 0.08);
        }

        .nav-links li a.active {
            color: #fff;
            background: var(--color-primary);
            box-shadow: 0 4px 12px rgba(61, 139, 95, 0.3);
        }

        .nav-links li a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 8px 22px;
            box-shadow: 0 4px 14px rgba(246, 139, 26, 0.35);
        }

        .nav-links li a.nav-cta:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(246, 139, 26, 0.4);
        }

        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--color-text);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
        }

        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        @media (max-width: 900px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .nav-links li a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                border-radius: var(--radius-md);
            }

            .nav-toggle {
                display: block;
            }
        }

        @media (max-width: 480px) {
            .header-inner {
                height: 64px;
            }
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.4rem;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 70px;
            background: linear-gradient(135deg, #0e2119 0%, #1b3b2a 50%, #214833 100%);
            overflow: hidden;
            min-height: 400px;
            display: flex;
            align-items: center;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 40%, rgba(61, 139, 95, 0.2) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 60%, rgba(246, 139, 26, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .article-hero .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .article-hero .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

        .article-hero .hero-breadcrumb a:hover {
            color: var(--color-accent);
        }

        .article-hero .hero-breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        .article-hero .hero-category {
            display: inline-block;
            background: rgba(246, 139, 26, 0.2);
            color: var(--color-accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            border: 1px solid rgba(246, 139, 26, 0.25);
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 4.5vw, 3.2rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 860px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .article-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 24px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }

        .article-hero .hero-meta i {
            margin-right: 6px;
            color: var(--color-accent);
        }

        .article-hero .hero-meta span {
            display: inline-flex;
            align-items: center;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 110px 0 50px;
                min-height: 300px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero .hero-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 480px) {
            .article-hero {
                padding: 100px 0 40px;
                min-height: auto;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .hero-breadcrumb {
                font-size: 0.75rem;
            }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 50px 0 60px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }

        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .article-body .article-excerpt {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            padding: 20px 24px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-primary);
            margin-bottom: 32px;
        }

        .article-body .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #1f2937;
        }

        .article-body .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--color-primary-dark);
            padding-bottom: 8px;
            border-bottom: 2px solid var(--color-bg-alt);
        }

        .article-body .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .article-body .article-content p {
            margin-bottom: 20px;
        }

        .article-body .article-content ul,
        .article-body .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-body .article-content li {
            margin-bottom: 8px;
        }

        .article-body .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body .article-content a:hover {
            color: var(--color-accent);
        }

        .article-body .article-content blockquote {
            padding: 20px 24px;
            margin: 24px 0;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-accent);
            color: var(--color-text-muted);
            font-style: italic;
        }

        .article-body .article-content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body .article-content pre {
            background: #1a1f2e;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 24px 0;
        }

        .article-body .article-content code {
            font-family: 'JetBrains Mono', 'Fira Code', monospace;
            background: rgba(61, 139, 95, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-body .article-content pre code {
            background: none;
            padding: 0;
        }

        .article-body .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }

        .article-body .article-content th,
        .article-body .article-content td {
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            text-align: left;
        }

        .article-body .article-content th {
            background: var(--color-bg-alt);
            font-weight: 600;
            color: var(--color-primary-dark);
        }

        .article-body .article-content tr:nth-child(even) {
            background: #fafbfc;
        }

        /* article tags & share */
        .article-tags-share {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }

        .article-tags .tag:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }

        .article-share a:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        /* sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-bg-alt);
        }

        .sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            color: var(--color-text-muted);
            transition: var(--transition);
        }

        .sidebar-card ul li a:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
            padding-left: 16px;
        }

        .sidebar-card ul li a i {
            color: var(--color-accent);
            font-size: 0.8rem;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            color: #fff;
            border: none;
            text-align: center;
        }

        .sidebar-cta h4 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }

        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.85;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .sidebar-cta .btn-sidebar {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(246, 139, 26, 0.3);
        }

        .sidebar-cta .btn-sidebar:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(246, 139, 26, 0.4);
        }

        @media (max-width: 1000px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .article-main {
                padding: 30px 0 40px;
            }
            .article-body {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }
            .article-body .article-excerpt {
                font-size: 1rem;
                padding: 16px 18px;
            }
            .article-body .article-content {
                font-size: 0.98rem;
            }
            .article-body .article-content h2 {
                font-size: 1.3rem;
            }
            .article-body .article-content h3 {
                font-size: 1.1rem;
            }
            .article-tags-share {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .article-body {
                padding: 18px 14px;
            }
            .article-body .article-content {
                font-size: 0.92rem;
                line-height: 1.8;
            }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .not-found-box i {
            font-size: 3.5rem;
            color: var(--color-text-muted);
            opacity: 0.3;
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--color-text-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(61, 139, 95, 0.3);
        }

        .not-found-box .btn-back:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(61, 139, 95, 0.4);
        }

        /* ===== Recommended Services ===== */
        .recommended-section {
            padding: 60px 0 70px;
            background: var(--color-bg-alt);
        }

        .recommended-section .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            text-align: center;
            margin-bottom: 8px;
        }

        .recommended-section .section-sub {
            text-align: center;
            color: var(--color-text-muted);
            font-size: 1rem;
            margin-bottom: 40px;
        }

        .rec-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .rec-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            cursor: pointer;
        }

        .rec-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
        }

        .rec-card .rec-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .rec-card .rec-img .rec-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0, 0, 0, 0.4) 0%, transparent 60%);
        }

        .rec-card .rec-body {
            padding: 20px 22px;
        }

        .rec-card .rec-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .rec-card .rec-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .rec-card .rec-body .rec-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition);
        }

        .rec-card .rec-body .rec-link:hover {
            color: var(--color-accent);
            gap: 10px;
        }

        @media (max-width: 860px) {
            .rec-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 540px) {
            .rec-grid {
                grid-template-columns: 1fr;
            }
            .recommended-section .section-title {
                font-size: 1.4rem;
            }
            .rec-card .rec-img {
                height: 150px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #1b3b2a 0%, #2d6f4a 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 580px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-section .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(246, 139, 26, 0.35);
        }

        .cta-section .btn-primary-cta:hover {
            background: var(--color-accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(246, 139, 26, 0.45);
        }

        .cta-section .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

        .cta-section .btn-outline-cta:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }

        @media (max-width: 480px) {
            .cta-section {
                padding: 40px 0;
            }
            .cta-section .btn-primary-cta,
            .cta-section .btn-outline-cta {
                width: 100%;
                justify-content: center;
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0e2119;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-brand .logo-text i {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 320px;
        }

        .footer-col h5 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.82rem;
            opacity: 0.5;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

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

        @media (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f0f2f5;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-primary-light);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-primary);
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #f97316;
            --primary-dark: #ea580c;
            --primary-light: #fb923c;
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #06b6d4;
            --bg-dark: #0b1120;
            --bg-card: #1a2332;
            --bg-card-hover: #1f2a3d;
            --text-light: #f8fafc;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 17, 32, 0.72);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }
        .site-header.scrolled {
            background: rgba(11, 17, 32, 0.92);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, #fff 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(249, 115, 22, 0.15);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: #fff;
            padding: 8px 10px;
            border-radius: var(--radius-xs);
            cursor: pointer;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 900px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 17, 32, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                border-radius: 0 0 var(--radius) var(--radius);
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 12px 18px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-xs);
            }
            .nav-links a.nav-cta {
                margin-top: 12px;
                justify-content: center;
                padding: 14px 22px;
            }
            .nav-toggle {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                height: 64px;
                gap: 12px;
            }
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
            .nav-links {
                top: 64px;
                padding: 16px 18px 24px;
            }
        }

        /* ===== 页面横幅 Hero ===== */
        .page-hero {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 60px;
            background: linear-gradient(135deg, #0b1120 0%, #1a2332 50%, #0f1a2e 100%);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse 60% 50% at 30% 40%, rgba(249, 115, 22, 0.12), transparent 70%),
                radial-gradient(ellipse 50% 40% at 80% 60%, rgba(6, 182, 212, 0.08), transparent 60%);
            pointer-events: none;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(249, 115, 22, 0.12);
            border: 1px solid rgba(249, 115, 22, 0.25);
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 20px;
        }
        @media (max-width: 768px) {
            .page-hero {
                min-height: 280px;
                padding: 100px 20px 48px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero p {
                font-size: 0.92rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
        }
        @media (max-width: 480px) {
            .section-padding {
                padding: 40px 0;
            }
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-title h2 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            color: var(--text-muted);
            max-width: 580px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .section-title h2 {
                font-size: 1.35rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片通用 ===== */
        .card-base {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            overflow: hidden;
        }
        .card-base:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            background: var(--bg-card-hover);
        }

        /* ===== 会员权益卡片网格 ===== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .benefit-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 36px 28px 32px;
            transition: var(--transition);
            text-align: center;
        }
        .benefit-card:hover {
            border-color: rgba(249, 115, 22, 0.25);
            box-shadow: 0 12px 40px rgba(249, 115, 22, 0.08);
            transform: translateY(-6px);
            background: var(--bg-card-hover);
        }
        .benefit-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.8rem;
            background: rgba(249, 115, 22, 0.1);
            color: var(--primary);
            transition: var(--transition);
        }
        .benefit-card:hover .icon-wrap {
            background: rgba(249, 115, 22, 0.2);
            transform: scale(1.05);
        }
        .benefit-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .benefit-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        @media (max-width: 900px) {
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 560px) {
            .benefits-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .benefit-card {
                padding: 28px 20px 24px;
            }
        }

        /* ===== 等级体系 ===== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .tier-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 32px 20px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .tier-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .tier-card.tier-bronze::before {
            background: linear-gradient(90deg, #cd7f32, #a0652c);
        }
        .tier-card.tier-silver::before {
            background: linear-gradient(90deg, #c0c0c0, #a0a0a0);
        }
        .tier-card.tier-gold::before {
            background: linear-gradient(90deg, #f59e0b, #d97706);
        }
        .tier-card.tier-diamond::before {
            background: linear-gradient(90deg, #06b6d4, #0891b2);
        }
        .tier-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .tier-card .tier-icon {
            font-size: 2.4rem;
            margin-bottom: 12px;
        }
        .tier-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .tier-card .tier-desc {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .tier-card .tier-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
        }
        .tier-card.tier-gold .tier-tag,
        .tier-card.tier-diamond .tier-tag {
            background: rgba(249, 115, 22, 0.1);
            border-color: rgba(249, 115, 22, 0.2);
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 480px) {
            .tier-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .tier-card {
                padding: 24px 16px 20px;
            }
        }

        /* ===== 专属活动 ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .activity-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .activity-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .activity-card .act-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .activity-card .act-body {
            padding: 24px 22px 26px;
        }
        .activity-card .act-body .act-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(6, 182, 212, 0.12);
            color: var(--accent);
            border: 1px solid rgba(6, 182, 212, 0.15);
            margin-bottom: 12px;
        }
        .activity-card .act-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .activity-card .act-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .activity-card .act-body .act-cta {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .activity-card .act-body .act-cta i {
            transition: var(--transition);
            font-size: 0.8rem;
        }
        .activity-card .act-body .act-cta:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 900px) {
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 560px) {
            .activity-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .activity-card .act-body {
                padding: 18px 16px 20px;
            }
            .activity-card .act-img {
                height: 180px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(249, 115, 22, 0.08), rgba(6, 182, 212, 0.06));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse 70% 50% at 30% 50%, rgba(249, 115, 22, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 24px 0;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-box .cta-btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-box .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 24px rgba(249, 115, 22, 0.3);
            transition: var(--transition);
        }
        .cta-box .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(249, 115, 22, 0.45);
        }
        .cta-box .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-light);
            border: 1px solid var(--border-color);
            background: rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }
        .cta-box .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-hover);
            transform: translateY(-3px);
        }
        @media (max-width: 640px) {
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn-primary,
            .cta-box .btn-secondary {
                padding: 12px 24px;
                font-size: 0.92rem;
                width: 100%;
                justify-content: center;
            }
            .cta-box .cta-btn-group {
                flex-direction: column;
                gap: 12px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0a0f1a;
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 28px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .logo-text i {
            color: var(--primary);
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: #fff;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-dim);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
        }

        /* ===== 额外辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .text-gradient-orange {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
        }
        .gap-section {
            margin-top: 8px;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary-light);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-dim);
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .animate-fade-up-1 {
            animation-delay: 0.1s;
        }
        .animate-fade-up-2 {
            animation-delay: 0.2s;
        }
        .animate-fade-up-3 {
            animation-delay: 0.3s;
        }
        .animate-fade-up-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d8a4e;
            --primary-light: #00e676;
            --primary-dark: #065f34;
            --accent: #f5a623;
            --accent-light: #ffd54f;
            --bg-dark: #0a0e17;
            --bg-section: #111827;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::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-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Typography ===== */
        .heading-xl {
            font-size: clamp(2.2rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
        }
        .heading-lg {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .heading-md {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
            font-weight: 600;
            line-height: 1.3;
        }
        .heading-sm {
            font-size: clamp(1rem, 1.8vw, 1.15rem);
            font-weight: 600;
            line-height: 1.4;
        }
        .text-body {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .text-small {
            font-size: 0.875rem;
            line-height: 1.6;
            color: var(--text-muted);
        }

        /* ===== Glass沉浸导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.55);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--glass-border);
            transition: background 0.4s ease, box-shadow 0.4s ease;
        }
        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.88);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .site-logo i {
            color: var(--primary-light);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links li {
            display: inline-block;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--primary-light);
            background: rgba(0, 230, 118, 0.10);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary-light);
        }
        .nav-links .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(13, 138, 78, 0.35);
            margin-left: 8px;
        }
        .nav-links .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(13, 138, 78, 0.5);
        }
        .nav-links .nav-cta::after {
            display: none !important;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
        }
        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border-bottom: 1px solid var(--glass-border);
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.4s ease, opacity 0.4s ease;
                border-radius: 0 0 var(--radius) var(--radius);
                box-shadow: var(--shadow-glass);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
            }
            .nav-links .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                height: 60px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== Hero区块 ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.88) 30%, rgba(10, 14, 23, 0.40) 80%);
            z-index: 1;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(0, 230, 118, 0.12);
            border: 1px solid rgba(0, 230, 118, 0.20);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            max-width: 720px;
            margin-bottom: 18px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            max-width: 600px;
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(13, 138, 78, 0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(13, 138, 78, 0.5);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--glass-border);
            background: var(--bg-glass);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 1rem;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.20);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--glass-border);
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-item .num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .hero-stat-item .num span {
            color: var(--primary-light);
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                padding: 100px 0 60px;
            }
            .hero-title {
                font-size: clamp(1.8rem, 5vw, 2.6rem);
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-item .num {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .hero-section {
                min-height: 50vh;
                padding: 80px 0 40px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header .subtitle {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
        }
        .section-header .subtitle i {
            font-size: 0.7rem;
        }
        .section-header .desc {
            color: var(--text-secondary);
            margin-top: 12px;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 投注类型卡片 ===== */
        .bet-card {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .bet-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 230, 118, 0.25);
            box-shadow: var(--shadow-card);
        }
        .bet-card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            background: rgba(0, 230, 118, 0.10);
            color: var(--primary-light);
        }
        .bet-card .icon-wrap.accent {
            background: rgba(245, 166, 35, 0.10);
            color: var(--accent);
        }
        .bet-card .icon-wrap.blue {
            background: rgba(59, 130, 246, 0.10);
            color: #3b82f6;
        }
        .bet-card .icon-wrap.pink {
            background: rgba(236, 72, 153, 0.10);
            color: #ec4899;
        }
        .bet-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .bet-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .bet-card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 230, 118, 0.10);
            color: var(--primary-light);
            margin-top: 14px;
        }

        /* ===== 赛事卡片 ===== */
        .match-card {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .match-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-card);
        }
        .match-card .thumb {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .match-card .thumb .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 23, 0.8), transparent);
        }
        .match-card .thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(0, 230, 118, 0.85);
            color: #000;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .match-card .body {
            padding: 18px 20px 20px;
        }
        .match-card .body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .match-card .body .league {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .match-card .body .odds-row {
            display: flex;
            gap: 10px;
            margin-top: 12px;
        }
        .match-card .body .odds-item {
            flex: 1;
            text-align: center;
            padding: 6px 4px;
            border-radius: var(--radius-xs);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .match-card .body .odds-item .val {
            display: block;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-light);
            margin-top: 2px;
        }

        /* ===== 优势数据块 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 24px;
        }
        .advantage-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            transition: var(--transition);
        }
        .advantage-item:hover {
            border-color: rgba(0, 230, 118, 0.20);
            transform: translateY(-2px);
        }
        .advantage-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .advantage-item .label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 28px 16px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover {
            border-color: rgba(0, 230, 118, 0.20);
            transform: translateY(-2px);
        }
        .step-item .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            background: rgba(0, 230, 118, 0.12);
            color: var(--primary-light);
            margin: 0 auto 16px;
            border: 1px solid rgba(0, 230, 118, 0.20);
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.12);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            gap: 12px;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            font-size: 0.85rem;
            transition: transform 0.3s ease;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ===== CTA区块 ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.88) 30%, rgba(10, 14, 23, 0.55) 80%);
            z-index: 1;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            max-width: 650px;
            margin: 0 auto 16px;
        }
        .cta-section p {
            max-width: 550px;
            margin: 0 auto 32px;
            color: var(--text-secondary);
            font-size: 1.05rem;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 16px 44px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070b12;
            border-top: 1px solid var(--glass-border);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-brand .logo-text i {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--glass-border);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 768px) {
            .heading-xl {
                font-size: clamp(1.8rem, 5vw, 2.4rem);
            }
            .heading-lg {
                font-size: clamp(1.3rem, 3.5vw, 1.8rem);
            }
        }
        @media (max-width: 480px) {
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 0.92rem;
            }
        }

        /* ===== focus-visible 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: #2a2f3a;
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3a3f4a;
        }