/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a0e1a;
            --primary-light: #111827;
            --primary-card: rgba(17, 24, 39, 0.85);
            --accent: #d4a853;
            --accent-light: #f0b429;
            --accent-gradient: linear-gradient(135deg, #d4a853, #f0b429);
            --accent-subtle: rgba(212, 168, 83, 0.12);
            --text: #ffffff;
            --text-secondary: #e5e7eb;
            --text-weak: #9ca3af;
            --text-muted: #6b7280;
            --border: rgba(212, 168, 83, 0.2);
            --border-light: rgba(255, 255, 255, 0.06);
            --glass: rgba(255, 255, 255, 0.04);
            --glass-hover: rgba(255, 255, 255, 0.08);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 40px rgba(212, 168, 83, 0.08);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.35rem;
            --font-size-2xl: 1.75rem;
            --font-size-3xl: 2.25rem;
            --font-size-4xl: 3rem;
            --font-size-5xl: 3.75rem;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3.5rem;
            --spacing-xl: 5rem;
            --max-width: 1200px;
        }

        /* ===== 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);
            font-size: var(--font-size-base);
            line-height: 1.7;
            color: var(--text-secondary);
            background: var(--primary);
            min-height: 100vh;
        }
        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;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        ::selection {
            background: var(--accent);
            color: var(--primary);
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 var(--spacing-md);
            }
        }

        /* ===== Typography ===== */
        .heading-xl {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .heading-lg {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }
        .heading-md {
            font-size: var(--font-size-xl);
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
        }
        .heading-sm {
            font-size: var(--font-size-lg);
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-weak {
            color: var(--text-weak);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-center {
            text-align: center;
        }
        @media (min-width: 768px) {
            .heading-xl {
                font-size: var(--font-size-4xl);
            }
            .heading-lg {
                font-size: var(--font-size-3xl);
            }
            .heading-md {
                font-size: var(--font-size-2xl);
            }
        }
        @media (min-width: 1024px) {
            .heading-xl {
                font-size: var(--font-size-5xl);
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: var(--font-size-sm);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--accent-gradient);
            color: var(--primary);
            border-color: var(--accent);
            box-shadow: 0 4px 20px rgba(212, 168, 83, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent-subtle);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 1rem 2.8rem;
            font-size: var(--font-size-base);
        }
        .btn-sm {
            padding: 0.5rem 1.2rem;
            font-size: var(--font-size-xs);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 500;
            background: var(--accent-subtle);
            color: var(--accent);
            border: 1px solid var(--border);
            letter-spacing: 0.02em;
        }
        .badge i {
            font-size: 0.7rem;
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: var(--radius-sm);
            font-size: var(--font-size-xs);
            font-weight: 500;
            background: var(--glass);
            color: var(--text-weak);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--accent-subtle);
            color: var(--accent);
            border-color: var(--border);
        }

        /* ===== Card ===== */
        .card {
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: var(--spacing-md);
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }
        .card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
        }
        .card-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-title {
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.5rem;
        }
        .card-text {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: var(--font-size-xs);
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: var(--spacing-lg) 0;
        }
        .section-header {
            margin-bottom: var(--spacing-md);
            text-align: center;
        }
        .section-header .subtitle {
            display: inline-block;
            margin-bottom: 0.6rem;
        }
        .section-header p {
            max-width: 640px;
            margin: 0.8rem auto 0;
            color: var(--text-weak);
            font-size: var(--font-size-sm);
        }
        @media (min-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section-header {
                margin-bottom: var(--spacing-lg);
            }
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }
        @media (min-width: 640px) {
            .grid-2 {
                grid-template-columns: 1fr 1fr;
            }
            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 768px) {
            .grid-3 {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr 1fr 1fr;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 14, 26, 0.96);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 var(--spacing-sm);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .header-inner {
                padding: 0 var(--spacing-md);
                height: 76px;
            }
        }
        .logo {
            font-size: var(--font-size-lg);
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo span {
            color: var(--accent);
        }
        .logo i {
            font-size: 1.2rem;
            color: var(--accent);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-list a {
            font-size: var(--font-size-sm);
            font-weight: 500;
            color: var(--text-weak);
            padding: 0.25rem 0;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gradient);
            border-radius: 2px;
            transition: width 0.35s ease;
        }
        .nav-list a:hover {
            color: var(--text);
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .nav-list a.active {
            color: var(--accent);
        }
        .nav-list a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            background: none;
            border: none;
            padding: 0.25rem;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--accent);
        }
        @media (max-width: 767px) {
            .nav-list {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                gap: 0;
                padding: var(--spacing-sm) 0;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                display: block;
                padding: 0.8rem var(--spacing-md);
                width: 100%;
                text-align: center;
                border-bottom: 1px solid var(--border-light);
            }
            .nav-list a::after {
                display: none;
            }
            .nav-list a.active {
                background: var(--accent-subtle);
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 0 80px;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
            filter: saturate(1.2) brightness(0.7);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center bottom, rgba(212, 168, 83, 0.08) 0%, transparent 70%),
                linear-gradient(180deg, rgba(10, 14, 26, 0.4) 0%, var(--primary) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: 0 var(--spacing-sm);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1.4rem;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 500;
            background: var(--accent-subtle);
            color: var(--accent);
            border: 1px solid var(--border);
            margin-bottom: 1.5rem;
            letter-spacing: 0.04em;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }
        .hero h1 {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text);
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
        .hero h1 span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: var(--font-size-base);
            color: var(--text-weak);
            max-width: 640px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 1rem;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-light);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: var(--font-size-xs);
            color: var(--text-muted);
            margin-top: 0.2rem;
        }
        @media (min-width: 768px) {
            .hero {
                min-height: 90vh;
                padding: 140px 0 100px;
            }
            .hero h1 {
                font-size: var(--font-size-4xl);
            }
            .hero p {
                font-size: var(--font-size-lg);
            }
            .hero-stats {
                gap: 4rem;
            }
            .hero-stat .num {
                font-size: var(--font-size-3xl);
            }
        }
        @media (min-width: 1024px) {
            .hero h1 {
                font-size: var(--font-size-5xl);
            }
        }

        /* ===== 介绍板块 ===== */
        .intro-section {
            background: var(--primary-light);
            position: relative;
        }
        .intro-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212, 168, 83, 0.1), transparent);
        }
        .intro-text .badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }
        .intro-text h2 {
            margin-bottom: 1rem;
        }
        .intro-text p {
            color: var(--text-weak);
            margin-bottom: 1.2rem;
            font-size: var(--font-size-sm);
            line-height: 1.8;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
            margin-top: 1.2rem;
        }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: var(--font-size-sm);
            color: var(--text-weak);
        }
        .intro-features li i {
            color: var(--accent);
            font-size: 0.9rem;
            width: 1.2rem;
        }
        @media (min-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr 1fr;
            }
            .intro-image img {
                height: 400px;
            }
        }

        /* ===== 分类卡片 ===== */
        .categories-section {
            background: var(--primary);
        }
        .category-card {
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: var(--spacing-md);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            cursor: pointer;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .category-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }
        .category-card h3 {
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.4rem;
        }
        .category-card p {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 1rem;
        }
        .category-card .card-link {
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .category-card .card-link i {
            transition: transform 0.3s ease;
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--primary-light);
            position: relative;
        }
        .news-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
        }
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .news-card:hover .news-img {
            transform: scale(1.04);
        }
        .news-card .news-body {
            padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-cat {
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: var(--accent);
            background: var(--accent-subtle);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            display: inline-block;
            align-self: flex-start;
            margin-bottom: 0.6rem;
            border: 1px solid var(--border);
        }
        .news-card .news-title {
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.4rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-excerpt {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 0.8rem;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: var(--font-size-xs);
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 0.8rem;
            margin-top: auto;
        }
        .news-empty {
            text-align: center;
            padding: var(--spacing-lg);
            color: var(--text-muted);
            font-size: var(--font-size-sm);
            background: var(--glass);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2rem;
            margin-bottom: 0.8rem;
            color: var(--border);
            display: block;
        }

        /* ===== 数据 / 流程 ===== */
        .stats-section {
            background: var(--primary);
            position: relative;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-sm);
        }
        .stat-card {
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: var(--spacing-md) var(--spacing-sm);
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 0.6rem;
        }
        .stat-card .stat-num {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: var(--font-size-xs);
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        @media (min-width: 640px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            background: var(--primary-light);
            position: relative;
        }
        .steps-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
            position: relative;
        }
        .step-card {
            display: flex;
            gap: var(--spacing-sm);
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: var(--spacing-md);
            transition: var(--transition);
            align-items: flex-start;
        }
        .step-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent-gradient);
            color: var(--primary);
            font-weight: 700;
            font-size: var(--font-size-lg);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-content h4 {
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.3rem;
        }
        .step-content p {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            line-height: 1.6;
        }
        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr 1fr 1fr;
            }
            .step-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--primary);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--primary-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) var(--spacing-md);
            font-size: var(--font-size-base);
            font-weight: 500;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            background: none;
            border: none;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--accent);
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }
        .faq-item.active .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 var(--spacing-md);
            color: var(--text-weak);
            font-size: var(--font-size-sm);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-light);
            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: 0.08;
            z-index: 0;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: var(--spacing-lg) 0;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            margin-bottom: 0.8rem;
        }
        .cta-content p {
            color: var(--text-weak);
            margin-bottom: 2rem;
            font-size: var(--font-size-sm);
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        @media (min-width: 768px) {
            .cta-content {
                padding: var(--spacing-xl) 0;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border-light);
            padding: var(--spacing-md) 0 var(--spacing-sm);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid var(--border-light);
        }
        .footer-col .logo {
            font-size: var(--font-size-base);
            margin-bottom: 0.8rem;
        }
        .footer-col p {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul a {
            font-size: var(--font-size-sm);
            color: var(--text-weak);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.8rem;
            padding-top: var(--spacing-sm);
            font-size: var(--font-size-xs);
            color: var(--text-muted);
            text-align: center;
        }
        .footer-bottom a {
            color: var(--text-weak);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 1rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--glass);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent-subtle);
            color: var(--accent);
            border-color: var(--border);
            transform: translateY(-2px);
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        /* ===== 分隔线装饰 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--accent-gradient);
            border-radius: 4px;
            margin: 0 auto 1.2rem;
        }
        .divider-left {
            margin: 0 0 1.2rem 0;
        }

        /* ===== Section backdrop ===== */
        .section-backdrop {
            position: relative;
        }
        .section-backdrop::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.04;
            pointer-events: none;
            z-index: 0;
        }
        .section-backdrop>* {
            position: relative;
            z-index: 1;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 520px) {
            .hero h1 {
                font-size: var(--font-size-2xl);
            }
            .hero-stats {
                gap: 1.5rem;
            }
            .hero-stat .num {
                font-size: var(--font-size-xl);
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }
            .stat-card {
                padding: var(--spacing-sm);
            }
            .stat-card .stat-num {
                font-size: var(--font-size-xl);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-col p {
                max-width: 100%;
            }
            .footer-social {
                justify-content: center;
            }
            .cta-content h2 {
                font-size: var(--font-size-xl);
            }
            .section {
                padding: var(--spacing-md) 0;
            }
        }
        @media (max-width: 400px) {
            .hero-actions .btn {
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.8s ease forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff2a2a;
            --secondary: #0a0a23;
            --secondary-light: #1a1a3e;
            --accent: #f5c518;
            --accent-dark: #d4a800;
            --bg-body: #0d0d1a;
            --bg-card: #151530;
            --bg-card-hover: #1d1d40;
            --bg-dark: #0a0a1a;
            --bg-section: #111128;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c0;
            --text-muted: #707088;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(229, 9, 20, 0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit; }
        button { cursor: pointer; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(229, 9, 20, 0.45);
        }
        .btn-primary:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-light);
        }
        .btn-secondary:hover {
            background: var(--bg-card);
            border-color: var(--text-secondary);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--secondary);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 197, 24, 0.3);
        }
        .btn-sm { padding: 10px 20px; font-size: 0.9rem; border-radius: var(--radius-sm); }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(229, 9, 20, 0.25);
        }
        .badge-accent {
            background: rgba(245, 197, 24, 0.15);
            color: var(--accent);
            border-color: rgba(245, 197, 24, 0.25);
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
            border-color: rgba(16, 185, 129, 0.25);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            background: rgba(229, 9, 20, 0.1);
            margin-bottom: 18px;
        }
        .card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
        .card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(13, 13, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 42, 74, 0.4);
            transition: background var(--transition);
        }
        .site-header.scrolled { background: rgba(10, 10, 26, 0.95); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { color: var(--primary); }
        .nav-list { display: flex; align-items: center; gap: 8px; }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }
        .nav-list a.active {
            color: var(--text-primary);
            background: rgba(229, 9, 20, 0.1);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); padding: 8px; }

        /* ===== Hero / Banner ===== */
        .page-banner {
            padding: 140px 0 80px;
            position: relative;
            background: linear-gradient(135deg, var(--secondary) 0%, #0f0f2a 50%, var(--bg-body) 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(229,9,20,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .banner-content { position: relative; z-index: 2; max-width: 800px; }
        .banner-content .badge { margin-bottom: 16px; }
        .banner-content h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .banner-content h1 span { color: var(--primary); }
        .banner-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .banner-actions { display: flex; gap: 16px; flex-wrap: wrap; }

        /* ===== 分类内容区 ===== */
        .category-intro {
            background: var(--bg-section);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-text h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
        .intro-text p { color: var(--text-secondary); margin-bottom: 20px; font-size: 1.05rem; }
        .intro-text .intro-list { display: grid; gap: 12px; }
        .intro-text .intro-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-secondary);
        }
        .intro-text .intro-list li i { color: var(--accent); width: 20px; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-image img { width: 100%; height: 100%; object-fit: cover; min-height: 300px; }

        /* ===== 入口卡片 ===== */
        .entry-cards { background: var(--bg-body); }
        .entry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .entry-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .entry-card .entry-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
        .entry-card .entry-icon { font-size: 2rem; color: var(--primary); }
        .entry-card .entry-status {
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 100px;
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
            font-weight: 600;
        }
        .entry-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
        .entry-card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 18px; flex: 1; }
        .entry-card .entry-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }
        .entry-card .entry-meta i { width: 16px; }

        /* ===== 流程步骤 ===== */
        .steps-section { background: var(--bg-section); }
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 44px;
            height: 44px;
            line-height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px;
        }
        .step-item h4 { font-weight: 700; font-size: 1.1rem; margin-bottom: 8px; }
        .step-item p { color: var(--text-secondary); font-size: 0.9rem; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-body); }
        .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--border-light); background: var(--bg-card-hover); }
        .faq-item h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
        .faq-item h4 i { color: var(--primary); font-size: 1rem; width: 20px; }
        .faq-item p { color: var(--text-secondary); font-size: 0.95rem; padding-left: 30px; line-height: 1.6; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 40px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(229,9,20,0.08) 0%, rgba(10,10,35,0.8) 100%);
            border: 1px solid rgba(229,9,20,0.2);
        }
        .cta-box h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-box p { color: var(--text-secondary); max-width: 540px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
        .footer-col .logo { margin-bottom: 16px; font-size: 1.2rem; }
        .footer-col p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { font-weight: 700; font-size: 1rem; margin-bottom: 16px; color: var(--text-primary); }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: var(--text-muted); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--primary); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            gap: 16px;
        }
        .footer-bottom span { color: var(--text-muted); font-size: 0.85rem; }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .entry-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 56px 0; }
            .section-title { font-size: 1.7rem; }
            .banner-content h1 { font-size: 2rem; }
            .page-banner { padding: 120px 0 60px; min-height: 300px; }
            .grid-2, .grid-3, .grid-4, .entry-grid, .steps-grid, .faq-grid { grid-template-columns: 1fr; }
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image { order: -1; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-box { padding: 40px 24px; }
            .cta-box h2 { font-size: 1.5rem; }

            /* 导航移动端 */
            .nav-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-color);
                pointer-events: none;
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-list a { width: 100%; padding: 14px 18px; font-size: 1.05rem; }
            .nav-list a.active::after { display: none; }
            .nav-list a.active { background: rgba(229,9,20,0.12); border-left: 3px solid var(--primary); }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .banner-content h1 { font-size: 1.6rem; }
            .banner-actions { flex-direction: column; }
            .btn { width: 100%; justify-content: center; }
            .step-item { padding: 24px 16px; }
            .faq-item { padding: 18px 20px; }
            .card { padding: 24px 20px; }
        }

        /* ===== 额外实用 ===== */
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-48 { margin-bottom: 48px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .text-primary { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .fw-700 { font-weight: 700; }
        .fw-800 { font-weight: 800; }
        .rounded-lg { border-radius: var(--radius-lg); }
        .shadow-md { box-shadow: var(--shadow-md); }

/* roulang page: article */
:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #e94560;
  --accent-hover: #d63851;
  --accent-glow: rgba(233, 69, 96, 0.3);
  --gold: #f5a623;
  --gold-light: #fce4a8;
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --text: #2d3436;
  --text-light: #636e72;
  --text-white: #f1f5f9;
  --border: #e9ecef;
  --border-light: rgba(255,255,255,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 8px 32px rgba(0,0,0,0.06);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --shadow-accent: 0 8px 32px rgba(233,69,96,0.25);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-h: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
ul{list-style:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 18px}}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(26,26,46,0.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-light);z-index:1000;transition:var(--transition)}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-size:1.45rem;font-weight:700;color:var(--text-white);letter-spacing:-0.3px}
.logo i{color:var(--accent);font-size:1.6rem}
.logo span{color:var(--accent);font-weight:400}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{padding:8px 18px;border-radius:var(--radius-xs);font-size:0.92rem;font-weight:500;color:rgba(255,255,255,0.75);transition:var(--transition);position:relative}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,0.08)}
.nav-list a.active{color:#fff;background:rgba(233,69,96,0.18)}
.nav-list a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--accent);border-radius:2px}
.nav-toggle{display:none;background:none;border:none;color:var(--text-white);font-size:1.5rem;cursor:pointer;padding:6px 10px;border-radius:var(--radius-xs)}
.nav-toggle:hover{background:rgba(255,255,255,0.08)}
@media(max-width:768px){
  .nav-toggle{display:block}
  .nav-list{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(26,26,46,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:18px 24px 24px;gap:4px;transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);border-bottom:1px solid var(--border-light)}
  .nav-list.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-list a{width:100%;padding:12px 16px;font-size:1rem}
}

/* Article Banner */
.article-banner{position:relative;padding:140px 0 80px;margin-top:var(--header-h);background:var(--bg-dark);overflow:hidden}
.article-banner .bg-overlay{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.25;mix-blend-mode:overlay}
.article-banner .bg-gradient{position:absolute;inset:0;background:linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(15,52,96,0.70) 60%, rgba(233,69,96,0.15) 100%)}
.article-banner .container{position:relative;z-index:2}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px;margin-bottom:20px;font-size:0.88rem;color:var(--gold-light)}
.article-meta .cat{background:var(--accent);color:#fff;padding:4px 16px;border-radius:20px;font-size:0.78rem;font-weight:600;letter-spacing:0.3px}
.article-meta .date i,.article-meta .views i{margin-right:6px;opacity:0.7}
.article-banner h1{font-size:clamp(1.6rem, 4.2vw, 2.8rem);color:var(--text-white);font-weight:800;line-height:1.25;max-width:820px;letter-spacing:-0.5px}
.article-banner .excerpt{margin-top:18px;font-size:1.05rem;color:rgba(255,255,255,0.75);max-width:700px;line-height:1.7}
.article-banner .banner-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08)}
.article-banner .share-links{display:flex;gap:12px}
.article-banner .share-links a{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,0.08);color:var(--text-white);font-size:1rem;transition:var(--transition)}
.article-banner .share-links a:hover{background:var(--accent);transform:translateY(-2px)}
@media(max-width:768px){
  .article-banner{padding:120px 0 50px}
  .article-banner .banner-bottom{flex-direction:column;align-items:flex-start;gap:16px}
}

/* Article Main */
.article-main{padding:60px 0 80px}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:48px}
.article-body{background:var(--bg-card);border-radius:var(--radius);padding:40px 44px;box-shadow:var(--shadow)}
.article-body .content{font-size:1.02rem;line-height:1.85;color:var(--text)}
.article-body .content p{margin-bottom:1.4em}
.article-body .content h2{font-size:1.5rem;font-weight:700;margin:2em 0 0.8em;color:var(--primary);letter-spacing:-0.3px}
.article-body .content h3{font-size:1.2rem;font-weight:600;margin:1.6em 0 0.6em;color:var(--primary-light)}
.article-body .content img{margin:1.5em 0;border-radius:var(--radius-sm);box-shadow:var(--shadow)}
.article-body .content ul,.article-body .content ol{padding-left:1.5em;margin-bottom:1.4em}
.article-body .content li{margin-bottom:0.5em}
.article-body .content a{color:var(--accent);border-bottom:1px solid transparent}
.article-body .content a:hover{border-bottom-color:var(--accent)}
.article-body .content blockquote{border-left:4px solid var(--accent);background:rgba(233,69,96,0.06);padding:16px 24px;margin:1.5em 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-light);font-style:italic}
.article-body .content code{background:#f1f3f5;padding:2px 8px;border-radius:4px;font-size:0.9em}
.article-body .content pre{background:var(--bg-dark);color:var(--text-white);padding:20px 24px;border-radius:var(--radius-sm);overflow-x:auto;margin:1.5em 0;font-size:0.9rem}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
.tag-list a{background:var(--bg);padding:6px 18px;border-radius:20px;font-size:0.82rem;color:var(--text-light);transition:var(--transition)}
.tag-list a:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.article-nav{display:flex;justify-content:space-between;margin-top:36px;padding-top:24px;border-top:1px solid var(--border);gap:20px}
.article-nav a{flex:1;padding:16px 20px;border-radius:var(--radius-sm);background:var(--bg);transition:var(--transition);font-size:0.92rem}
.article-nav a:hover{background:rgba(233,69,96,0.06);transform:translateY(-2px);box-shadow:var(--shadow)}
.article-nav .next{text-align:right}
.article-nav .label{font-size:0.75rem;color:var(--text-light);display:block;margin-bottom:4px}
.article-nav .title{font-weight:600;color:var(--primary)}

/* Sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:32px}
.sidebar-card{background:var(--bg-card);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow)}
.sidebar-card h3{font-size:1.05rem;font-weight:700;margin-bottom:18px;color:var(--primary);display:flex;align-items:center;gap:10px}
.sidebar-card h3 i{color:var(--accent);font-size:1.1rem}
.sidebar-list li{border-bottom:1px solid var(--border);padding:12px 0}
.sidebar-list li:last-child{border-bottom:none}
.sidebar-list a{display:flex;gap:14px;align-items:flex-start;transition:var(--transition)}
.sidebar-list a:hover{transform:translateX(4px)}
.sidebar-list .thumb{width:68px;height:52px;border-radius:6px;object-fit:cover;flex-shrink:0;background:var(--bg)}
.sidebar-list .info{flex:1;min-width:0}
.sidebar-list .info .s-title{font-size:0.88rem;font-weight:600;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.sidebar-list .info .s-date{font-size:0.72rem;color:var(--text-light);margin-top:4px}
.sidebar-cta{text-align:center;padding:32px 24px;background:linear-gradient(135deg, var(--primary), var(--primary-light));border-radius:var(--radius);color:var(--text-white)}
.sidebar-cta h4{font-size:1.1rem;font-weight:700;margin-bottom:10px}
.sidebar-cta p{font-size:0.88rem;opacity:0.85;margin-bottom:18px}
.sidebar-cta .btn{display:inline-block;padding:10px 28px;background:var(--accent);color:#fff;border-radius:25px;font-weight:600;font-size:0.92rem;transition:var(--transition)}
.sidebar-cta .btn:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:var(--shadow-accent)}
@media(max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:40px}
  .article-body{padding:32px 28px}
  .article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:24px}
}
@media(max-width:640px){
  .article-body{padding:24px 18px}
  .article-sidebar{grid-template-columns:1fr}
  .article-nav{flex-direction:column}
}

/* Platform Guide Section */
.platform-guide-section{padding:70px 0;background:var(--bg-dark);position:relative;overflow:hidden}
.platform-guide-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.08;mix-blend-mode:overlay}
.platform-guide-section .container{position:relative;z-index:2}
.platform-guide-section .section-title{text-align:center;color:var(--text-white);font-size:clamp(1.5rem, 3vw, 2.2rem);font-weight:800;margin-bottom:12px}
.platform-guide-section .section-sub{text-align:center;color:rgba(255,255,255,0.65);font-size:1rem;margin-bottom:44px}
.platform-cards{display:grid;grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));gap:24px}
.platform-card{background:rgba(255,255,255,0.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:var(--transition);color:var(--text-white)}
.platform-card:hover{background:rgba(255,255,255,0.10);transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,0,0,0.3)}
.platform-card .icon{width:60px;height:60px;border-radius:50%;background:rgba(233,69,96,0.18);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.6rem;color:var(--accent)}
.platform-card h4{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.platform-card p{font-size:0.88rem;opacity:0.75;line-height:1.6}
.platform-card .btn-link{display:inline-block;margin-top:14px;color:var(--accent);font-weight:600;font-size:0.88rem;border-bottom:2px solid transparent;transition:var(--transition)}
.platform-card .btn-link:hover{border-bottom-color:var(--accent)}
@media(max-width:640px){
  .platform-cards{grid-template-columns:1fr}
}

/* FAQ Section */
.faq-section{padding:70px 0;background:var(--bg)}
.faq-section .section-title{text-align:center;font-size:clamp(1.4rem, 2.8vw, 2rem);font-weight:800;color:var(--primary);margin-bottom:10px}
.faq-section .section-sub{text-align:center;color:var(--text-light);font-size:1rem;margin-bottom:44px}
.faq-grid{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--bg-card);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden;transition:var(--transition)}
.faq-item:hover{box-shadow:var(--shadow-lg)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-weight:600;font-size:0.98rem;color:var(--primary);gap:12px;transition:var(--transition);user-select:none}
.faq-q:hover{color:var(--accent)}
.faq-q i{transition:var(--transition);font-size:0.9rem;color:var(--text-light);flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--accent)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height 0.35s ease, padding 0.3s ease}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 20px}
.faq-a p{font-size:0.92rem;color:var(--text-light);line-height:1.7}
@media(max-width:640px){
  .faq-q{padding:16px 18px;font-size:0.92rem}
  .faq-a{padding:0 18px}
  .faq-item.open .faq-a{padding:0 18px 16px}
}

/* CTA Section */
.cta-section{padding:70px 0;background:linear-gradient(135deg, var(--primary) 0%, #0f3460 100%);position:relative;overflow:hidden;text-align:center}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.06;mix-blend-mode:overlay}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:clamp(1.4rem, 3vw, 2.2rem);color:var(--text-white);font-weight:800;margin-bottom:12px}
.cta-section p{font-size:1.05rem;color:rgba(255,255,255,0.75);max-width:600px;margin:0 auto 28px;line-height:1.7}
.cta-section .btn-group{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.cta-section .btn-primary{display:inline-flex;align-items:center;gap:10px;padding:14px 36px;background:var(--accent);color:#fff;border-radius:30px;font-weight:700;font-size:1.02rem;transition:var(--transition);border:none;cursor:pointer}
.cta-section .btn-primary:hover{background:var(--accent-hover);transform:translateY(-3px);box-shadow:var(--shadow-accent)}
.cta-section .btn-outline{display:inline-flex;align-items:center;gap:10px;padding:14px 36px;background:transparent;color:var(--text-white);border:2px solid rgba(255,255,255,0.3);border-radius:30px;font-weight:600;font-size:1.02rem;transition:var(--transition);cursor:pointer}
.cta-section .btn-outline:hover{background:rgba(255,255,255,0.10);border-color:var(--accent);transform:translateY(-3px)}

/* Related Section */
.related-section{padding:70px 0;background:var(--bg)}
.related-section .section-title{text-align:center;font-size:clamp(1.4rem, 2.8vw, 2rem);font-weight:800;color:var(--primary);margin-bottom:12px}
.related-section .section-sub{text-align:center;color:var(--text-light);font-size:1rem;margin-bottom:44px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));gap:24px}
.related-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.related-card .thumb{height:180px;background:var(--bg);overflow:hidden}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.related-card:hover .thumb img{transform:scale(1.05)}
.related-card .body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.related-card .body .cat-tag{display:inline-block;background:rgba(233,69,96,0.10);color:var(--accent);padding:2px 14px;border-radius:12px;font-size:0.72rem;font-weight:600;margin-bottom:10px;width:fit-content}
.related-card .body h4{font-size:1rem;font-weight:700;color:var(--primary);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .body p{font-size:0.86rem;color:var(--text-light);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.related-card .body .date{font-size:0.76rem;color:var(--text-light);margin-top:12px;display:flex;align-items:center;gap:6px}
@media(max-width:640px){
  .related-grid{grid-template-columns:1fr}
}

/* Not Found State */
.not-found-state{text-align:center;padding:60px 20px}
.not-found-state i{font-size:3.5rem;color:var(--text-light);margin-bottom:18px;opacity:0.4}
.not-found-state h2{font-size:1.6rem;color:var(--primary);margin-bottom:10px}
.not-found-state p{color:var(--text-light);margin-bottom:24px}
.not-found-state .btn-back{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:var(--accent);color:#fff;border-radius:25px;font-weight:600;transition:var(--transition)}
.not-found-state .btn-back:hover{background:var(--accent-hover);transform:translateY(-2px)}

/* Footer */
.site-footer{background:var(--bg-dark);color:var(--text-white);padding:56px 0 0;border-top:1px solid var(--border-light)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,0.06)}
.footer-col .logo{font-size:1.3rem;margin-bottom:14px}
.footer-col p{font-size:0.88rem;color:rgba(255,255,255,0.6);line-height:1.7;max-width:360px}
.footer-col h4{font-size:0.95rem;font-weight:700;margin-bottom:16px;color:var(--text-white);letter-spacing:0.3px}
.footer-col ul li{margin-bottom:8px}
.footer-col ul a{font-size:0.86rem;color:rgba(255,255,255,0.55);transition:var(--transition);display:flex;align-items:center;gap:8px}
.footer-col ul a:hover{color:var(--accent);transform:translateX(4px)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:24px 0;gap:16px;font-size:0.82rem;color:rgba(255,255,255,0.4)}
.footer-social{display:flex;gap:14px}
.footer-social a{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.5);font-size:1rem;transition:var(--transition)}
.footer-social a:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.footer-bottom a{color:rgba(255,255,255,0.5);transition:var(--transition)}
.footer-bottom a:hover{color:var(--accent)}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* Utility */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}