/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --clr-primary: #0d1117;
            --clr-primary-light: #161b22;
            --clr-accent: #f0b90b;
            --clr-accent-hover: #d4a50a;
            --clr-accent-glow: rgba(240, 185, 11, 0.25);
            --clr-blue: #1a6bff;
            --clr-blue-hover: #1557d9;
            --clr-bg: #0a0e1a;
            --clr-surface: rgba(255, 255, 255, 0.04);
            --clr-surface-hover: rgba(255, 255, 255, 0.08);
            --clr-border: rgba(255, 255, 255, 0.08);
            --clr-border-light: rgba(255, 255, 255, 0.12);
            --clr-text: #f0f2f5;
            --clr-text-secondary: #a0aec0;
            --clr-text-muted: #6b7a8f;
            --clr-glass: rgba(13, 17, 23, 0.75);
            --clr-glass-border: rgba(255, 255, 255, 0.10);
            --clr-card-bg: rgba(255, 255, 255, 0.04);
            --clr-card-border: rgba(255, 255, 255, 0.06);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.20);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.30);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.40);
            --shadow-glow: 0 0 40px rgba(240, 185, 11, 0.10);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --section-pad: 5rem 0;
            --container-max: 1200px;
        }

        /* ==================== 基础 Reset ==================== */
        *, *::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(--clr-bg);
            color: var(--clr-text);
            line-height: 1.65;
            font-size: 1rem;
            overflow-x: hidden;
        }
        a { color: var(--clr-accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-accent-hover); }
        a:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--clr-text); }
        p { color: var(--clr-text-secondary); margin-bottom: 0; }

        /* ==================== 容器 ==================== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 1rem; }
        }

        /* ==================== 导航 ==================== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 0.75rem 0;
            transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
            background: transparent;
        }
        .site-header.scrolled {
            background: var(--clr-glass);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            box-shadow: 0 2px 40px rgba(0,0,0,0.5);
            border-bottom: 1px solid var(--clr-glass-border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--clr-text);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .logo i { color: var(--clr-accent); font-size: 1.5rem; }
        .logo:hover { color: var(--clr-text); }
        .logo span { background: linear-gradient(135deg, var(--clr-accent), #f7d875); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-menu a {
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            color: var(--clr-text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav-menu a:hover { background: var(--clr-surface); color: var(--clr-text); }
        .nav-menu a.active {
            background: var(--clr-accent-glow);
            color: var(--clr-accent);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--clr-accent);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--clr-accent) !important;
            color: #0d1117 !important;
            font-weight: 700 !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: var(--radius-sm) !important;
            margin-left: 0.5rem;
            transition: background var(--transition), transform var(--transition) !important;
        }
        .nav-cta:hover { background: var(--clr-accent-hover) !important; transform: translateY(-1px); }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--clr-border-light);
            color: var(--clr-text);
            font-size: 1.3rem;
            padding: 0.4rem 0.8rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--clr-surface); }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                background: var(--clr-glass);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: var(--radius-md);
                border: 1px solid var(--clr-glass-border);
                padding: 0.75rem;
                gap: 0.15rem;
            }
            .nav-menu.open { display: flex; }
            .nav-menu a { padding: 0.7rem 1rem; width: 100%; text-align: left; }
            .nav-cta { margin-left: 0; margin-top: 0.3rem; text-align: center !important; }
        }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 8rem 1.5rem 5rem;
            overflow: hidden;
            background: var(--clr-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;
            will-change: transform;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(10,14,26,0.2) 0%, rgba(10,14,26,0.85) 80%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--clr-accent-glow);
            border: 1px solid rgba(240,185,11,0.25);
            padding: 0.4rem 1.2rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--clr-accent);
            margin-bottom: 1.5rem;
            letter-spacing: 0.3px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #ffffff 30%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--clr-text-secondary);
            max-width: 640px;
            margin: 0 auto 2.2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--clr-accent);
            color: #0d1117 !important;
            font-weight: 700;
            padding: 0.9rem 2.2rem;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            font-size: 1rem;
        }
        .btn-primary:hover { background: var(--clr-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px var(--clr-accent-glow); }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: transparent;
            color: var(--clr-text) !important;
            font-weight: 600;
            padding: 0.9rem 2.2rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--clr-border-light);
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), border-color var(--transition);
            font-size: 1rem;
        }
        .btn-secondary:hover { background: var(--clr-surface); transform: translateY(-2px); border-color: var(--clr-text-secondary); }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 3.5rem;
            padding-top: 2.5rem;
            border-top: 1px solid var(--clr-border);
        }
        .hero-stat-item { text-align: center; }
        .hero-stat-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--clr-text);
            letter-spacing: -0.02em;
        }
        .hero-stat-value span { color: var(--clr-accent); }
        .hero-stat-label { font-size: 0.85rem; color: var(--clr-text-muted); margin-top: 0.2rem; }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.4rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-value { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.9rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-stats { flex-direction: column; gap: 1rem; }
        }

        /* ==================== 板块通用 ==================== */
        .section { padding: var(--section-pad); }
        .section-dark { background: var(--clr-primary); }
        .section-darker { background: var(--clr-bg); }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3.5rem;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.8rem;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--clr-text-secondary);
        }
        .section-header .badge-sub {
            display: inline-block;
            background: var(--clr-accent-glow);
            color: var(--clr-accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 1rem;
            border-radius: 100px;
            margin-bottom: 0.8rem;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .section-header h2 { font-size: 1.8rem; }
            .section { padding: 3.5rem 0; }
        }

        /* ==================== 卡片 ==================== */
        .card-modern {
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            height: 100%;
        }
        .card-modern:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--clr-border-light);
        }
        .card-modern .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--clr-accent-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--clr-accent);
            margin-bottom: 1.2rem;
        }
        .card-modern h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
        .card-modern p { font-size: 0.92rem; color: var(--clr-text-secondary); }

        /* ==================== 特色卡片（带图） ==================== */
        .feature-card {
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--clr-border-light);
        }
        .feature-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .feature-card .card-body { padding: 1.5rem; }
        .feature-card .card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
        .feature-card .card-body p { font-size: 0.9rem; color: var(--clr-text-secondary); }
        .feature-card .card-tag {
            display: inline-block;
            background: var(--clr-accent-glow);
            color: var(--clr-accent);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.7rem;
            border-radius: 100px;
            margin-bottom: 0.6rem;
            letter-spacing: 0.3px;
        }

        /* ==================== 内容 / 资讯列表 ==================== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.2rem 1.5rem;
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-sm);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .news-item:hover {
            background: var(--clr-surface-hover);
            border-color: var(--clr-border-light);
            transform: translateX(4px);
        }
        .news-item .news-meta {
            flex-shrink: 0;
            text-align: right;
            min-width: 70px;
        }
        .news-item .news-meta .news-date {
            font-size: 0.8rem;
            color: var(--clr-text-muted);
            display: block;
        }
        .news-item .news-meta .news-cat {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--clr-accent);
            background: var(--clr-accent-glow);
            padding: 0.1rem 0.6rem;
            border-radius: 100px;
            display: inline-block;
            margin-top: 0.2rem;
        }
        .news-item .news-body { flex: 1; }
        .news-item .news-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--clr-text);
            transition: color var(--transition);
        }
        .news-item:hover .news-body h4 { color: var(--clr-accent); }
        .news-item .news-body p {
            font-size: 0.88rem;
            color: var(--clr-text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        @media (max-width: 600px) {
            .news-item { flex-direction: column; gap: 0.5rem; padding: 1rem; }
            .news-item .news-meta { text-align: left; min-width: auto; display: flex; gap: 0.8rem; align-items: center; }
        }

        /* ==================== 统计数字 ==================== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            text-align: center;
            padding: 2rem 1rem;
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-md);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); }
        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-accent), #f7d875);
            -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: var(--clr-text-secondary); margin-top: 0.3rem; }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .stat-card .stat-number { font-size: 2rem; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ==================== FAQ ==================== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.6rem; }
        .faq-item {
            background: var(--clr-card-bg);
            border: 1px solid var(--clr-card-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--clr-border-light); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 1.2rem 1.5rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--clr-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--clr-accent); }
        .faq-question i { transition: transform var(--transition); color: var(--clr-text-muted); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.92rem;
            color: var(--clr-text-secondary);
            display: none;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ==================== CTA ==================== */
        .cta-section {
            background: linear-gradient(135deg, rgba(240,185,11,0.06) 0%, rgba(26,107,255,0.04) 100%);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
            text-align: center;
            padding: 5rem 1.5rem;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--clr-text-secondary);
            max-width: 540px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-primary { font-size: 1.05rem; padding: 1rem 2.5rem; }
        @media (max-width: 768px) {
            .cta-section h2 { font-size: 1.8rem; }
            .cta-section { padding: 3.5rem 1rem; }
        }

        /* ==================== 页脚 ==================== */
        .site-footer {
            background: var(--clr-primary);
            border-top: 1px solid var(--clr-border);
            padding: 3.5rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo { font-size: 1.25rem; margin-bottom: 0.8rem; }
        .footer-brand p { font-size: 0.88rem; color: var(--clr-text-muted); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; color: var(--clr-text); }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            padding: 0.3rem 0;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--clr-accent); }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }
        .footer-bottom a { color: var(--clr-text-muted); }
        .footer-bottom a:hover { color: var(--clr-accent); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ==================== 响应式辅助 ==================== */
        .text-accent { color: var(--clr-accent); }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }

        /* ==================== Foundation 覆写 ==================== */
        .grid-container { max-width: var(--container-max); padding: 0 1.5rem; }
        @media (max-width: 768px) {
            .grid-container { padding: 0 1rem; }
        }
        .grid-x > .cell { padding: 0; }
        .grid-padding-x > .cell { padding-left: 0.75rem; padding-right: 0.75rem; }
        @media (max-width: 640px) {
            .grid-padding-x > .cell { padding-left: 0.5rem; padding-right: 0.5rem; }
        }

        /* ==================== 空状态 ==================== */
        .empty-state {
            text-align: center;
            padding: 3rem 1.5rem;
            background: var(--clr-card-bg);
            border: 1px dashed var(--clr-border-light);
            border-radius: var(--radius-md);
        }
        .empty-state i { font-size: 2.5rem; color: var(--clr-text-muted); margin-bottom: 1rem; }
        .empty-state p { font-size: 0.95rem; color: var(--clr-text-muted); }

        /* ==================== 其他 ==================== */
        .section-divider { border: none; height: 1px; background: var(--clr-border); margin: 0; }
        .img-round { border-radius: var(--radius-sm); }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #b8860b;
            --primary-light: #daa520;
            --primary-dark: #8b6508;
            --secondary: #1a1a2e;
            --secondary-light: #16213e;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --bg-dark: #0d0d1a;
            --bg-card: #111128;
            --bg-card-hover: #1a1a3a;
            --bg-section: #f5f0eb;
            --bg-light: #faf8f5;
            --text-white: #f5f0e8;
            --text-light: #c8c0b8;
            --text-muted: #9a8e86;
            --text-body: #2c2a28;
            --text-dark: #1a1816;
            --border-light: rgba(255, 215, 140, 0.15);
            --border-card: rgba(255, 215, 140, 0.10);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Base Reset ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-primary);
            background-color: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul, ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(13, 13, 26, 0.65);
            backdrop-filter: blur(18px) saturate(1.3);
            -webkit-backdrop-filter: blur(18px) saturate(1.3);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 13, 26, 0.92);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-light);
            letter-spacing: 0.5px;
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-menu a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }

        .nav-menu a:hover {
            color: var(--text-white);
            background: rgba(255, 215, 140, 0.08);
        }

        .nav-menu a.active {
            color: var(--primary-light);
            background: rgba(218, 165, 32, 0.12);
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
        }

        .nav-menu a.nav-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-white);
            border-radius: var(--radius-sm);
            padding: 8px 22px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 15px rgba(184, 134, 11, 0.3);
        }

        .nav-menu a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 25px rgba(184, 134, 11, 0.45);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-white);
            padding: 6px 10px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: var(--header-height);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            filter: brightness(0.45) saturate(1.1);
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 13, 26, 0.70) 0%, rgba(13, 13, 26, 0.30) 50%, rgba(13, 13, 26, 0.80) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: 40px 24px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(218, 165, 32, 0.18);
            border: 1px solid rgba(218, 165, 32, 0.25);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f5e8c8, var(--primary-light), #f5e8c8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-white);
            box-shadow: 0 4px 20px rgba(184, 134, 11, 0.35);
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px rgba(184, 134, 11, 0.5);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 215, 140, 0.25);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            border-color: var(--primary-light);
            background: rgba(218, 165, 32, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 100px 0;
        }

        .section-dark {
            background: var(--bg-dark);
        }

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

        .section-light {
            background: var(--bg-section);
            color: var(--text-body);
        }

        .section-light .section-title,
        .section-light .section-sub {
            color: var(--text-dark);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            color: var(--text-white);
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

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

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .card-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .card-item:hover::before {
            opacity: 1;
        }

        .card-item:hover {
            border-color: rgba(218, 165, 32, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }

        .card-icon {
            font-size: 2.2rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            display: inline-block;
            background: rgba(218, 165, 32, 0.10);
            width: 60px;
            height: 60px;
            line-height: 60px;
            text-align: center;
            border-radius: var(--radius-sm);
        }

        .card-item h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .card-item p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .card-item .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(218, 165, 32, 0.12);
            color: var(--primary-light);
            margin-top: 16px;
            letter-spacing: 0.3px;
        }

        /* ===== Feature Section (图文区块) ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .feature-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            background: var(--bg-card);
        }

        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .feature-image:hover img {
            transform: scale(1.03);
        }

        .feature-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-white);
        }

        .feature-content p {
            color: var(--text-light);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-list {
            margin-top: 20px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 12px;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        .feature-list li i {
            color: var(--primary-light);
            margin-top: 4px;
            font-size: 1rem;
        }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .step-item:hover {
            border-color: rgba(218, 165, 32, 0.20);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }

        .step-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(218, 165, 32, 0.15);
            line-height: 1;
            margin-bottom: 12px;
        }

        .step-item h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item {
            padding: 30px 20px;
            background: rgba(255, 215, 140, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 215, 140, 0.06);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 1rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 215, 140, 0.08);
            padding: 20px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            padding: 8px 0;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary-light);
        }

        .faq-question i {
            font-size: 1.2rem;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-answer.open {
            max-height: 300px;
            padding-top: 12px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .section-light .faq-item {
            border-bottom-color: rgba(0, 0, 0, 0.08);
        }

        .section-light .faq-question {
            color: var(--text-dark);
        }

        .section-light .faq-question:hover {
            color: var(--primary-dark);
        }

        .section-light .faq-answer {
            color: var(--text-muted);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), var(--bg-dark));
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .cta-inner {
            text-align: center;
            padding: 80px 24px;
        }

        .cta-inner h2 {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .cta-inner p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-inner .btn-primary {
            font-size: 1.05rem;
            padding: 16px 44px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-col a i {
            margin-right: 8px;
            width: 16px;
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 140, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .hero-title {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-menu {
                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: 20px 24px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-light);
                pointer-events: none;
            }

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

            .nav-menu a {
                width: 100%;
                padding: 12px 16px;
                text-align: center;
            }

            .nav-menu a.active::after {
                bottom: 6px;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.8rem;
            }

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

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

            .section {
                padding: 60px 0;
            }

            .cta-inner h2 {
                font-size: 1.8rem;
            }

            .feature-content h2 {
                font-size: 1.6rem;
            }

            .stat-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

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

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

            .container-custom {
                padding: 0 16px;
            }

            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== Utilities ===== */
        .text-center {
            text-align: center;
        }

        .mt-20 {
            margin-top: 20px;
        }

        .mb-20 {
            margin-bottom: 20px;
        }

        .gap-12 {
            gap: 12px;
        }

        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b141e;
            --primary-light: #162435;
            --primary-lighter: #1e3245;
            --accent: #f5b818;
            --accent-dark: #d49a10;
            --accent-glow: rgba(245, 184, 24, 0.25);
            --text: #e8edf2;
            --text-secondary: #94a6b8;
            --text-muted: #6a7f94;
            --border: #253a4e;
            --border-light: #2e445a;
            --card-bg: #162435;
            --card-hover: #1c2e42;
            --glass-bg: rgba(11, 20, 30, 0.88);
            --glass-border: rgba(245, 184, 24, 0.12);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(245, 184, 24, 0.08);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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);
            background: var(--primary);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5em;
        }

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

        /* ===== Utility ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 0.25em;
            letter-spacing: -0.01em;
        }
        .section-title .highlight {
            color: var(--accent);
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 48px auto;
        }

        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 2px solid transparent;
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px var(--accent-glow);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 18px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius);
        }
        .btn .fa-arrow-right {
            transition: transform var(--transition);
        }
        .btn:hover .fa-arrow-right {
            transform: translateX(4px);
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 100px;
            background: var(--accent-glow);
            color: var(--accent);
            border: 1px solid rgba(245, 184, 24, 0.2);
            letter-spacing: 0.02em;
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }
        .badge-dark {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            border-color: var(--border);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--glass-border);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 20, 30, 0.95);
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            text-decoration: none;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo span {
            color: var(--text);
        }
        .logo:hover span {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--text);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-menu a.active {
            color: var(--accent);
            background: rgba(245, 184, 24, 0.08);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-menu a.nav-cta {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            margin-left: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a.nav-cta:hover {
            background: var(--accent-dark);
            color: var(--primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .nav-menu a.nav-cta::after {
            display: none;
        }

        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: calc(var(--nav-height) + 40px) 24px 80px;
            background: var(--primary);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.02);
            transition: transform 0.6s ease;
        }
        .hero-section:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(11, 20, 30, 0.4) 0%, var(--primary) 80%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: var(--accent-glow);
            border: 1px solid rgba(245, 184, 24, 0.2);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }
        .hero-title .highlight {
            color: var(--accent);
            background: linear-gradient(135deg, var(--accent), #ffd700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 36px auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 排行榜 ===== */
        .rankings-section {
            background: var(--primary-light);
            position: relative;
        }
        .rankings-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
        }
        .ranking-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 20px;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 16px;
        }
        .ranking-card:hover {
            background: var(--card-hover);
            border-color: var(--accent);
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
        }
        .ranking-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-muted);
            min-width: 48px;
            text-align: center;
            line-height: 1;
        }
        .ranking-number.top1 {
            color: var(--accent);
        }
        .ranking-number.top2 {
            color: #c0c0c0;
        }
        .ranking-number.top3 {
            color: #cd7f32;
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .ranking-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .ranking-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .ranking-meta i {
            color: var(--accent);
            font-size: 0.75rem;
        }
        .ranking-stats {
            display: flex;
            gap: 24px;
            align-items: center;
            flex-shrink: 0;
        }
        .ranking-stat {
            text-align: center;
        }
        .ranking-stat-value {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
        }
        .ranking-stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .ranking-change {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 100px;
        }
        .ranking-change.up {
            color: #4ade80;
            background: rgba(74, 222, 128, 0.1);
        }
        .ranking-change.down {
            color: #f87171;
            background: rgba(248, 113, 113, 0.1);
        }
        .ranking-change.steady {
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== 数据亮点 ===== */
        .highlights-section {
            background: var(--primary);
        }
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .highlight-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .highlight-card:hover {
            border-color: var(--accent);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .highlight-icon {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }
        .highlight-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .highlight-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        /* ===== 适用场景 ===== */
        .scenarios-section {
            background: var(--primary-light);
            position: relative;
        }
        .scenarios-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .scenario-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .scenario-card:hover::before {
            opacity: 1;
        }
        .scenario-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .scenario-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }
        .scenario-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .scenario-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 流程 ===== */
        .process-section {
            background: var(--primary);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .process-step:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-step-number {
            width: 48px;
            height: 48px;
            background: var(--accent-glow);
            border: 2px solid var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent);
            margin: 0 auto 16px auto;
            transition: all var(--transition);
        }
        .process-step:hover .process-step-number {
            background: var(--accent);
            color: var(--primary);
        }
        .process-step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .process-step-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .process-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            opacity: 0.5;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--primary-light);
            position: relative;
        }
        .faq-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item.active {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
        }
        .cta-title .highlight {
            color: var(--accent);
        }
        .cta-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            color: var(--accent);
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom span {
            display: inline-block;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-arrow {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }

            /* 导航 */
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(11, 20, 30, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--glass-border);
                box-shadow: var(--shadow-lg);
                pointer-events: none;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu a {
                width: 100%;
                padding: 14px 18px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-menu a.active::after {
                display: none;
            }
            .nav-menu a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }

            .hero-section {
                min-height: 70vh;
                padding: calc(var(--nav-height) + 24px) 20px 56px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-number {
                font-size: 1.8rem;
            }

            .ranking-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 20px 16px;
            }
            .ranking-stats {
                width: 100%;
                justify-content: space-between;
                gap: 12px;
                padding-top: 12px;
                border-top: 1px solid var(--border);
            }
            .ranking-number {
                min-width: 36px;
                font-size: 1.5rem;
                text-align: left;
            }
            .ranking-name {
                font-size: 1.05rem;
            }

            .highlight-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .highlight-number {
                font-size: 2rem;
            }

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

            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-title {
                font-size: 1.8rem;
            }
            .cta-desc {
                font-size: 1rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .highlight-grid {
                grid-template-columns: 1fr;
            }
            .ranking-meta {
                flex-direction: column;
                gap: 4px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中状态 ===== */
        ::selection {
            background: var(--accent);
            color: var(--primary);
        }