/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-body: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-darker: #16213e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --shadow-glow: 0 0 40px rgba(230,57,70,0.15);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --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; }
        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; outline: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 20px;
            pointer-events: none;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1100px;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-radius: 60px;
            padding: 0 28px;
            height: 60px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.04);
            border: 1px solid rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 40px rgba(0,0,0,0.10), 0 1px 3px rgba(0,0,0,0.04);
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-logo i {
            font-size: 26px;
            color: var(--primary);
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(230,57,70,0.06);
        }
        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 15px rgba(230,57,70,0.30);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(0,0,0,0.04);
            border-radius: 30px;
            padding: 0 16px;
            height: 36px;
            gap: 8px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-search:focus-within {
            background: var(--bg-card);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230,57,70,0.10);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 14px;
        }
        .nav-search input {
            background: none;
            border: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
            padding: 4px 0;
        }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(230,57,70,0.25);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(230,57,70,0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--text-primary);
            padding: 4px 8px;
            border-radius: 8px;
            background: rgba(0,0,0,0.04);
        }

        /* 移动端导航抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            backdrop-filter: blur(8px);
            z-index: 2000;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer-inner {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            max-width: 80vw;
            background: var(--bg-card);
            padding: 80px 28px 40px;
            box-shadow: -10px 0 40px rgba(0,0,0,0.15);
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .mobile-drawer.open .mobile-drawer-inner {
            transform: translateX(0);
        }
        .mobile-drawer-close {
            position: absolute;
            top: 18px;
            right: 20px;
            font-size: 28px;
            color: var(--text-secondary);
            background: none;
            border: none;
        }
        .mobile-drawer-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer-links a {
            display: block;
            padding: 14px 18px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 12px;
            transition: var(--transition);
        }
        .mobile-drawer-links a:hover {
            background: rgba(230,57,70,0.06);
            color: var(--primary);
        }
        .mobile-drawer-links a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .mobile-drawer-cta {
            display: block;
            text-align: center;
            margin-top: 24px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            padding: 14px;
            border-radius: 16px;
            font-size: 16px;
            font-weight: 600;
        }

        @media (max-width: 900px) {
            .site-header { top: 12px; padding: 0 12px; }
            .nav-dock { padding: 0 16px; height: 54px; border-radius: 40px; }
            .nav-links { display: none; }
            .nav-search { display: none; }
            .nav-cta { display: none; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
            .mobile-drawer { display: block; }
            .nav-logo { font-size: 19px; }
            .nav-logo i { font-size: 22px; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--secondary) 50%, var(--bg-dark) 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 52px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 18px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            max-width: 540px;
            margin-bottom: 32px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .hero-badge {
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.12);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            color: rgba(255,255,255,0.85);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-badge i { color: var(--accent); }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 8px 30px rgba(230,57,70,0.30);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230,57,70,0.40);
        }
        .hero-btn-secondary {
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.20);
            color: var(--text-white);
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-secondary:hover {
            background: rgba(255,255,255,0.18);
            transform: translateY(-3px);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual-inner {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 30px 80px rgba(0,0,0,0.40);
            border: 1px solid rgba(255,255,255,0.08);
            background: var(--bg-dark);
        }
        .hero-visual-inner img {
            width: 100%;
            height: auto;
            display: block;
        }
        .hero-float-card {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 16px 22px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .hero-float-card i {
            font-size: 30px;
            color: var(--accent);
        }
        .hero-float-card-text strong {
            display: block;
            font-size: 18px;
            color: var(--text-primary);
        }
        .hero-float-card-text span {
            font-size: 13px;
            color: var(--text-light);
        }

        @media (max-width: 1024px) {
            .hero-content h1 { font-size: 40px; }
            .hero .container { gap: 40px; }
        }
        @media (max-width: 768px) {
            .hero { padding: 100px 0 60px; min-height: auto; }
            .hero .container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-content p { margin-left: auto; margin-right: auto; }
            .hero-badges { justify-content: center; }
            .hero-buttons { justify-content: center; }
            .hero-content h1 { font-size: 34px; }
            .hero-visual-inner { max-width: 100%; }
            .hero-float-card { display: none; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 28px; }
            .hero-btn-primary, .hero-btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-light {
            background: var(--bg-body);
        }
        .section-white {
            background: var(--bg-card);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header.light h2 { color: var(--text-white); }
        .section-header.light p { color: rgba(255,255,255,0.7); }
        .section-header .highlight {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header h2 { font-size: 28px; }
            .section-header p { font-size: 15px; }
        }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
        }
        .tag:hover {
            background: rgba(230,57,70,0.14);
        }
        .tag i { font-size: 12px; }
        .badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-primary {
            background: var(--primary);
            color: var(--text-white);
        }
        .badge-secondary {
            background: var(--secondary);
            color: var(--text-white);
        }
        .badge-accent {
            background: var(--accent);
            color: var(--text-white);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(230,57,70,0.15);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: #eaeaea;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .card-meta i { margin-right: 4px; }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 特色 / 介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .intro-text h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .intro-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .intro-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .intro-feature-item i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .intro-feature-item strong {
            display: block;
            font-size: 15px;
            margin-bottom: 2px;
        }
        .intro-feature-item span {
            font-size: 13px;
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-text h3 { font-size: 24px; }
            .intro-features { grid-template-columns: 1fr; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255,255,255,0.10);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-number .suffix {
            font-size: 24px;
            color: var(--accent);
        }
        .stat-label {
            font-size: 15px;
            color: rgba(255,255,255,0.7);
        }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 32px; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ===== 分类卡片 ===== */
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .category-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .category-card-overlay {
            padding: 20px 24px 24px;
        }
        .category-card-overlay h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card-overlay p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .category-card .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(230,57,70,0.92);
            color: #fff;
            backdrop-filter: blur(4px);
        }

        /* ===== 内容列表（CMS） ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            align-items: flex-start;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: rgba(230,57,70,0.15);
        }
        .news-item-img {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: #eaeaea;
        }
        .news-item-body {
            flex: 1;
            min-width: 0;
        }
        .news-item-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item-body h3 a:hover {
            color: var(--primary);
        }
        .news-item-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .news-item-meta .cat {
            color: var(--primary);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .news-item { flex-direction: column; padding: 16px; }
            .news-item-img { width: 100%; height: 160px; }
        }

        /* ===== 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 16px;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .steps-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230,57,70,0.15);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--text-light);
            font-size: 16px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .faq-question { font-size: 15px; padding: 16px 18px; }
            .faq-answer { padding: 0 18px; }
            .faq-item.open .faq-answer { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-darker) 100%);
            padding: 80px 0;
            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: 0.10;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 17px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 17px;
            font-weight: 600;
            box-shadow: 0 8px 30px rgba(230,57,70,0.30);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230,57,70,0.40);
        }
        .cta-btn-secondary {
            background: rgba(255,255,255,0.10);
            border: 1px solid rgba(255,255,255,0.20);
            color: var(--text-white);
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 17px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-btn-secondary:hover {
            background: rgba(255,255,255,0.18);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .cta-section { padding: 56px 0; }
            .cta-content h2 { font-size: 28px; }
            .cta-btn-primary, .cta-btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 辅助类 ===== */
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .text-center { text-align: center; }
        .text-primary { color: var(--primary); }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            box-shadow: 0 4px 15px rgba(230,57,70,0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(230,57,70,0.35);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--border);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--border);
            margin: 16px 0;
        }
        .divider-light {
            background: rgba(255,255,255,0.08);
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
        }
        .empty-state i {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.3;
        }
        .empty-state p {
            font-size: 15px;
        }

        /* ===== 焦点 ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(230,57,70,0.4);
            outline-offset: 2px;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
    :root {
        --primary: #e63946;
        --primary-dark: #c1121f;
        --primary-light: #ff6b6b;
        --secondary: #1d3557;
        --secondary-light: #2b4d7a;
        --accent: #f4a261;
        --accent-light: #f8c78a;
        --bg-light: #f8f9fa;
        --bg-dark: #0d1b2a;
        --bg-card: #ffffff;
        --text-primary: #1a1a2e;
        --text-secondary: #4a4a6a;
        --text-light: #8a8aaa;
        --text-white: #ffffff;
        --border: #e2e8f0;
        --border-light: #f1f3f5;
        --radius: 16px;
        --radius-sm: 8px;
        --radius-lg: 24px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow: 0 8px 30px rgba(0,0,0,0.08);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
        --shadow-hover: 0 16px 48px rgba(0,0,0,0.15);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset / Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-primary);
        background: var(--bg-light);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        padding-top: var(--header-height);
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color var(--transition);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
        background: none;
    }
    ul,
    ol {
        list-style: none;
    }
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        line-height: 1.3;
        font-weight: 700;
        color: var(--text-primary);
    }
    p {
        color: var(--text-secondary);
        margin-bottom: 0;
    }

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

    /* ===== Utility ===== */
    .mt-16 {
        margin-top: 16px;
    }
    .mb-16 {
        margin-bottom: 16px;
    }
    .text-center {
        text-align: center;
    }
    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 100px;
        font-size: 13px;
        font-weight: 600;
        background: var(--primary);
        color: var(--text-white);
        letter-spacing: 0.3px;
    }
    .badge-secondary {
        background: var(--secondary);
    }
    .badge-accent {
        background: var(--accent);
        color: var(--text-primary);
    }
    .section-label {
        display: inline-block;
        font-size: 13px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--primary);
        margin-bottom: 12px;
        position: relative;
    }
    .section-label::after {
        content: '';
        display: block;
        width: 40px;
        height: 3px;
        background: var(--primary);
        border-radius: 4px;
        margin-top: 6px;
    }
    .section-label.text-center::after {
        margin-left: auto;
        margin-right: auto;
    }
    .section-title {
        font-size: 36px;
        font-weight: 800;
        margin-bottom: 16px;
        color: var(--text-primary);
        letter-spacing: -0.5px;
    }
    .section-subtitle {
        font-size: 18px;
        color: var(--text-secondary);
        max-width: 640px;
        line-height: 1.6;
    }
    .section-subtitle.center {
        margin-left: auto;
        margin-right: auto;
    }
    @media (max-width: 768px) {
        .section-title {
            font-size: 28px;
        }
        .section-subtitle {
            font-size: 16px;
        }
    }

    /* ===== Header / Nav Dock ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(255, 255, 255, 0.88);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        transition: background var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled {
        background: rgba(255, 255, 255, 0.96);
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    }
    .nav-dock {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 800;
        color: var(--text-primary);
        flex-shrink: 0;
    }
    .nav-logo i {
        color: var(--primary);
        font-size: 26px;
    }
    .nav-logo span {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 8px;
        flex: 1;
        justify-content: center;
    }
    .nav-links a {
        padding: 8px 18px;
        border-radius: 100px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
        position: relative;
    }
    .nav-links a:hover {
        color: var(--primary);
        background: rgba(230, 57, 70, 0.08);
    }
    .nav-links a.active {
        color: var(--text-white);
        background: var(--primary);
        box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
    }
    .nav-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .nav-search {
        display: flex;
        align-items: center;
        gap: 8px;
        background: var(--bg-light);
        border-radius: 100px;
        padding: 6px 16px;
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .nav-search:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
    }
    .nav-search i {
        color: var(--text-light);
        font-size: 14px;
    }
    .nav-search input {
        border: none;
        background: transparent;
        padding: 4px 0;
        width: 140px;
        font-size: 14px;
        color: var(--text-primary);
    }
    .nav-search input::placeholder {
        color: var(--text-light);
    }
    .nav-cta {
        padding: 8px 24px;
        border-radius: 100px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: var(--text-white);
        font-size: 14px;
        font-weight: 600;
        transition: all var(--transition);
        box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        white-space: nowrap;
    }
    .nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
        color: var(--text-white);
    }
    .nav-toggle {
        display: none;
        font-size: 22px;
        color: var(--text-primary);
        padding: 8px;
        cursor: pointer;
        background: none;
        border: none;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .nav-toggle:hover {
        background: var(--bg-light);
    }

    /* ===== Mobile Drawer ===== */
    .drawer-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(4px);
        z-index: 998;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.4s ease;
    }
    .drawer-overlay.open {
        opacity: 1;
        pointer-events: auto;
    }
    .drawer-menu {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        max-width: 80vw;
        height: 100%;
        background: var(--bg-card);
        z-index: 999;
        padding: 32px 24px;
        box-shadow: -8px 0 40px rgba(0, 0, 0, 0.12);
        transition: right 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        display: flex;
        flex-direction: column;
        gap: 16px;
        overflow-y: auto;
    }
    .drawer-menu.open {
        right: 0;
    }
    .drawer-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 20px;
    }
    .drawer-header .nav-logo {
        font-size: 20px;
    }
    .drawer-close {
        font-size: 24px;
        color: var(--text-secondary);
        padding: 8px;
        cursor: pointer;
        background: none;
        border: none;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .drawer-close:hover {
        background: var(--bg-light);
    }
    .drawer-menu .nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }
    .drawer-menu .nav-links a {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        font-size: 16px;
    }
    .drawer-menu .nav-links a.active {
        background: var(--primary);
        color: var(--text-white);
    }
    .drawer-menu .nav-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
        margin-top: 12px;
    }
    .drawer-menu .nav-search {
        width: 100%;
    }
    .drawer-menu .nav-search input {
        width: 100%;
    }
    .drawer-menu .nav-cta {
        width: 100%;
        text-align: center;
        padding: 12px 24px;
    }

    @media (max-width: 900px) {
        .nav-links {
            display: none;
        }
        .nav-search {
            display: none;
        }
        .nav-cta {
            display: none;
        }
        .nav-toggle {
            display: block;
        }
        .nav-dock {
            padding: 0 16px;
        }
    }

    /* ===== Hero / Banner ===== */
    .category-hero {
        position: relative;
        padding: 80px 0 72px;
        background: var(--bg-dark);
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: center;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.25;
        z-index: 0;
    }
    .category-hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.7) 100%);
        z-index: 1;
    }
    .category-hero .container {
        position: relative;
        z-index: 2;
    }
    .category-hero .badge {
        background: var(--accent);
        color: var(--text-primary);
        margin-bottom: 16px;
    }
    .category-hero h1 {
        font-size: 44px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: -0.5px;
        line-height: 1.2;
    }
    .category-hero p {
        font-size: 18px;
        color: rgba(255, 255, 255, 0.8);
        max-width: 640px;
        line-height: 1.7;
    }
    .category-hero .hero-meta {
        margin-top: 24px;
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
    }
    .category-hero .hero-meta i {
        margin-right: 6px;
        color: var(--accent);
    }
    @media (max-width: 768px) {
        .category-hero {
            padding: 56px 0 48px;
            min-height: 240px;
        }
        .category-hero h1 {
            font-size: 30px;
        }
        .category-hero p {
            font-size: 16px;
        }
    }

    /* ===== Breadcrumb ===== */
    .breadcrumb-bar {
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        padding: 12px 0;
    }
    .breadcrumb-bar .container {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-light);
    }
    .breadcrumb-bar a {
        color: var(--text-secondary);
        transition: color var(--transition);
    }
    .breadcrumb-bar a:hover {
        color: var(--primary);
    }
    .breadcrumb-bar .sep {
        color: var(--border);
        font-size: 12px;
    }
    .breadcrumb-bar .current {
        color: var(--text-primary);
        font-weight: 500;
    }

    /* ===== Section Spacing ===== */
    .section {
        padding: 72px 0;
    }
    .section-alt {
        background: var(--bg-card);
    }
    .section-dark {
        background: var(--bg-dark);
        color: var(--text-white);
    }
    .section-dark .section-title {
        color: var(--text-white);
    }
    .section-dark .section-subtitle {
        color: rgba(255, 255, 255, 0.7);
    }
    @media (max-width: 768px) {
        .section {
            padding: 48px 0;
        }
    }

    /* ===== Cards ===== */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
        margin-top: 40px;
    }
    .card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }
    .card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
        border-color: var(--border);
    }
    .card-img {
        aspect-ratio: 16 / 10;
        overflow: hidden;
        position: relative;
        background: var(--bg-light);
    }
    .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .card:hover .card-img img {
        transform: scale(1.05);
    }
    .card-img .card-tag {
        position: absolute;
        top: 12px;
        left: 12px;
        padding: 4px 12px;
        border-radius: 100px;
        font-size: 12px;
        font-weight: 600;
        background: var(--primary);
        color: var(--text-white);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    }
    .card-body {
        padding: 20px 24px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .card-body h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 8px;
        color: var(--text-primary);
        line-height: 1.4;
    }
    .card-body p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.6;
        flex: 1;
    }
    .card-body .card-meta {
        margin-top: 16px;
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 13px;
        color: var(--text-light);
    }
    .card-body .card-meta i {
        margin-right: 4px;
    }
    .card-body .card-link {
        margin-top: 16px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap var(--transition);
    }
    .card-body .card-link:hover {
        gap: 10px;
        color: var(--primary-dark);
    }
    @media (max-width: 600px) {
        .card-grid {
            grid-template-columns: 1fr;
        }
    }

    /* ===== Guide Steps ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 32px;
        margin-top: 40px;
        counter-reset: step;
    }
    .step-item {
        text-align: center;
        padding: 32px 20px;
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
        position: relative;
    }
    .step-item:hover {
        box-shadow: var(--shadow);
        transform: translateY(-4px);
        border-color: var(--border);
    }
    .step-item::before {
        counter-increment: step;
        content: counter(step);
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--primary);
        color: var(--text-white);
        font-size: 20px;
        font-weight: 800;
        margin: 0 auto 20px;
        box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
    }
    .step-item h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text-primary);
    }
    .step-item p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.6;
    }
    @media (max-width: 600px) {
        .steps-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 800px;
        margin: 40px auto 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover {
        border-color: var(--border);
        box-shadow: var(--shadow-sm);
    }
    .faq-question {
        padding: 20px 24px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        background: none;
        border: none;
        width: 100%;
        text-align: left;
        transition: color var(--transition);
    }
    .faq-question:hover {
        color: var(--primary);
    }
    .faq-question i {
        font-size: 14px;
        color: var(--text-light);
        transition: transform var(--transition);
        flex-shrink: 0;
    }
    .faq-item.open .faq-question i {
        transform: rotate(180deg);
        color: var(--primary);
    }
    .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: 15px;
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }
    @media (max-width: 768px) {
        .faq-question {
            font-size: 15px;
            padding: 16px 18px;
        }
        .faq-answer {
            font-size: 14px;
        }
    }

    /* ===== CTA ===== */
    .cta-block {
        background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
        border-radius: var(--radius-lg);
        padding: 56px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
        margin-top: 24px;
    }
    .cta-block::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-block .container {
        position: relative;
        z-index: 1;
    }
    .cta-block h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 12px;
    }
    .cta-block p {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.85);
        max-width: 540px;
        margin: 0 auto 28px;
        line-height: 1.6;
    }
    .cta-block .btn-group {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: 100px;
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        transition: all var(--transition);
        border: none;
        background: none;
    }
    .btn-primary {
        background: var(--primary);
        color: var(--text-white);
        box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
        color: var(--text-white);
    }
    .btn-outline-light {
        border: 2px solid rgba(255, 255, 255, 0.3);
        color: var(--text-white);
    }
    .btn-outline-light:hover {
        border-color: var(--text-white);
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-2px);
        color: var(--text-white);
    }
    @media (max-width: 768px) {
        .cta-block {
            padding: 40px 24px;
        }
        .cta-block h2 {
            font-size: 24px;
        }
        .btn {
            padding: 12px 24px;
            font-size: 14px;
        }
    }

    /* ===== Table / Specs ===== */
    .specs-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 20px;
        margin-top: 40px;
    }
    .spec-item {
        display: flex;
        align-items: flex-start;
        gap: 16px;
        padding: 24px;
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
    }
    .spec-item:hover {
        box-shadow: var(--shadow-sm);
        border-color: var(--border);
        transform: translateY(-2px);
    }
    .spec-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(230, 57, 70, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: var(--primary);
        flex-shrink: 0;
    }
    .spec-content h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 4px;
        color: var(--text-primary);
    }
    .spec-content p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.6;
    }

    /* ===== Content List ===== */
    .content-list {
        margin-top: 40px;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .content-item {
        display: flex;
        align-items: center;
        gap: 20px;
        padding: 20px 24px;
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
    }
    .content-item:hover {
        box-shadow: var(--shadow-sm);
        border-color: var(--border);
        transform: translateX(4px);
    }
    .content-item .item-index {
        font-size: 28px;
        font-weight: 800;
        color: var(--border);
        min-width: 44px;
        font-feature-settings: "tnum";
    }
    .content-item .item-body {
        flex: 1;
    }
    .content-item .item-body h4 {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 4px;
    }
    .content-item .item-body p {
        font-size: 14px;
        color: var(--text-secondary);
    }
    .content-item .item-arrow {
        color: var(--text-light);
        font-size: 18px;
        transition: all var(--transition);
    }
    .content-item:hover .item-arrow {
        color: var(--primary);
        transform: translateX(4px);
    }
    @media (max-width: 600px) {
        .content-item {
            padding: 16px 18px;
            gap: 14px;
        }
        .content-item .item-index {
            font-size: 22px;
            min-width: 32px;
        }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, 0.85);
        padding: 64px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand h3 {
        font-size: 24px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 16px;
    }
    .footer-brand h3 span {
        color: var(--primary);
    }
    .footer-brand p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.7;
        max-width: 360px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 20px;
        letter-spacing: 0.5px;
    }
    .footer-col a {
        display: block;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        padding: 4px 0;
        transition: all var(--transition);
    }
    .footer-col a:hover {
        color: var(--primary);
        padding-left: 4px;
    }
    .footer-social {
        display: flex;
        gap: 12px;
        margin-top: 16px;
    }
    .footer-social a {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        color: rgba(255, 255, 255, 0.7);
        padding: 0;
        transition: all var(--transition);
    }
    .footer-social a:hover {
        background: var(--primary);
        color: var(--text-white);
        padding: 0;
        transform: translateY(-2px);
    }
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
        flex-wrap: wrap;
        gap: 12px;
    }
    .footer-bottom a {
        color: rgba(255, 255, 255, 0.5);
        transition: color var(--transition);
    }
    .footer-bottom a:hover {
        color: var(--primary);
    }
    @media (max-width: 900px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .footer-brand {
            grid-column: 1 / -1;
        }
    }
    @media (max-width: 600px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .site-footer {
            padding: 40px 0 0;
        }
    }

    /* ===== Responsive Extra ===== */
    @media (max-width: 520px) {
        .category-hero h1 {
            font-size: 24px;
        }
        .section-title {
            font-size: 22px;
        }
        .specs-grid {
            grid-template-columns: 1fr;
        }
        .card-grid {
            grid-template-columns: 1fr;
        }
        .steps-grid {
            grid-template-columns: 1fr;
        }
        .cta-block h2 {
            font-size: 20px;
        }
        .cta-block .btn-group {
            flex-direction: column;
            align-items: stretch;
        }
        .btn {
            justify-content: center;
        }
    }

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

    /* ===== Smooth images ===== */
    img {
        border-radius: var(--radius-sm);
    }

    /* ===== Animation ===== */
    @keyframes fadeUp {
        from {
            opacity: 0;
            transform: translateY(24px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .animate-fade-up {
        animation: fadeUp 0.6s ease both;
    }
    .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: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7a;
            --primary-dark: #0f1a2e;
            --accent: #d4a853;
            --accent-light: #e8c87a;
            --accent-dark: #b88d3a;
            --bg-body: #f5f6fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-muted: #f0f2f8;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a4a;
            --text-secondary: #4a5a7a;
            --text-muted: #8a9ab0;
            --text-white: #ffffff;
            --border-color: #e2e6f0;
            --border-light: #f0f2f8;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 74, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 74, 0.10);
            --shadow-lg: 0 12px 48px rgba(26, 42, 74, 0.14);
            --shadow-xl: 0 24px 64px rgba(26, 42, 74, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', serif;
            --container-max: 1200px;
            --header-height: 72px;
            --content-max-width: 780px;
        }

        /* ===== 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-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-height);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 1.8rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; color: var(--text-secondary); }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Utility ===== */
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mt-40 { margin-top: 40px; }
        .mt-48 { margin-top: 48px; }
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-40 { margin-bottom: 40px; }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .gap-16 { gap: 16px; }
        .gap-24 { gap: 24px; }

        /* ===== Header / Dock Nav ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 24px;
            pointer-events: none;
        }
        .nav-dock {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 28px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-radius: 60px;
            box-shadow: 0 4px 24px rgba(26, 42, 74, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.5);
            pointer-events: auto;
            transition: var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 32px rgba(26, 42, 74, 0.14);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--accent);
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--primary) 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--bg-muted);
        }
        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active:hover {
            background: var(--primary-light);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-muted);
            border-radius: 40px;
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.15);
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 6px 0;
            width: 120px;
            font-size: 0.88rem;
            color: var(--text-primary);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-cta {
            padding: 8px 22px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.88rem;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(212, 168, 83, 0.30);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.40);
            color: var(--text-white);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            font-size: 1.3rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-muted);
        }

        /* ===== Mobile Drawer ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 1999;
            backdrop-filter: blur(4px);
        }
        .drawer-overlay.open { display: block; }
        .drawer-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--bg-white);
            z-index: 2000;
            padding: 32px 24px;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.12);
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .drawer-panel.open { right: 0; }
        .drawer-close {
            align-self: flex-end;
            font-size: 1.4rem;
            background: transparent;
            cursor: pointer;
            padding: 6px 12px;
            border-radius: 8px;
            color: var(--text-primary);
        }
        .drawer-close:hover { background: var(--bg-muted); }
        .drawer-panel a {
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .drawer-panel a:hover {
            background: var(--bg-muted);
            color: var(--primary);
        }
        .drawer-panel a.active {
            color: var(--accent);
            font-weight: 600;
        }
        .drawer-panel .nav-cta {
            text-align: center;
            margin-top: 8px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .article-hero:hover .article-hero-bg {
            transform: scale(1);
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 26, 46, 0.92) 20%, rgba(15, 26, 46, 0.5) 70%, rgba(15, 26, 46, 0.3) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            margin-bottom: 16px;
        }
        .article-category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: var(--accent);
            color: var(--text-white);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .article-hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
        }
        .article-hero-meta .meta-item i {
            font-size: 0.8rem;
            color: var(--accent);
        }
        .article-hero h1 {
            color: var(--text-white);
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 8px;
        }
        .article-hero-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            max-width: 680px;
            line-height: 1.6;
            margin-top: 8px;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0 40px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-content h2 {
            margin-top: 2em;
            margin-bottom: 0.6em;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .article-content h3 {
            margin-top: 1.6em;
            margin-bottom: 0.4em;
            font-size: 1.25rem;
            color: var(--primary-light);
        }
        .article-content p {
            font-size: 1.02rem;
            line-height: 1.85;
            margin-bottom: 1.2em;
            color: var(--text-secondary);
        }
        .article-content ul,
        .article-content ol {
            margin: 1em 0 1.4em 1.6em;
            color: var(--text-secondary);
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
            padding-left: 0.4em;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
            padding-left: 0.4em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-muted);
            padding: 20px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.6em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content a {
            color: var(--accent-dark);
            border-bottom: 1px solid transparent;
        }
        .article-content a:hover {
            border-bottom-color: var(--accent);
        }
        .article-content code {
            background: var(--bg-muted);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-light);
        }
        .article-content pre {
            background: var(--bg-dark);
            color: #e8e8e8;
            padding: 24px 28px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.6em 0;
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            margin-bottom: 20px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }
        .sidebar-toc {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-toc a {
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-toc a:hover {
            background: var(--bg-muted);
            color: var(--primary);
            border-left-color: var(--accent);
        }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .sidebar-cta .btn-primary {
            width: 100%;
            text-align: center;
        }

        /* ===== Tags & Share ===== */
        .tags-share {
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .tags-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-item {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--bg-muted);
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag-item:hover {
            background: var(--accent);
            color: var(--text-white);
            border-color: var(--accent);
        }
        .share-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .share-list span {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-muted);
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .share-btn:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-muted);
        }
        .related-section h2 {
            text-align: center;
            margin-bottom: 40px;
            font-size: 1.8rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card-body {
            padding: 20px 20px 24px;
        }
        .related-card-body .tag-item {
            margin-bottom: 10px;
            display: inline-block;
        }
        .related-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
        }
        .related-card-body h3 a:hover {
            color: var(--accent);
        }
        .related-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .related-card-body .meta-item {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-dark);
            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: 0.12;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary, .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--text-white);
            box-shadow: 0 6px 24px rgba(212, 168, 83, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(212, 168, 83, 0.45);
            color: var(--text-white);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(212, 168, 83, 0.08);
        }

        /* ===== Not Found ===== */
        .notfound-section {
            padding: 120px 0 80px;
            text-align: center;
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .notfound-section .icon-big {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .notfound-section h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .notfound-section p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .notfound-section .btn-primary {
            display: inline-flex;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand h3 {
            font-size: 1.5rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 1rem;
            color: var(--text-white);
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.05rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--text-white);
            padding: 0;
            transform: translateY(-3px);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0 32px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            body { padding-top: var(--header-height); }
            .site-header { top: 8px; padding: 0 12px; }
            .nav-dock { padding: 10px 16px; border-radius: 40px; }
            .nav-links { display: none; }
            .nav-search { display: none; }
            .nav-cta { display: none; }
            .nav-toggle { display: block; }
            .article-hero { min-height: 320px; padding: 60px 0 40px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero-desc { font-size: 0.95rem; }
            .article-content { padding: 28px 20px; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content p { font-size: 0.95rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .related-card-img { height: 180px; }
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .tags-share { flex-direction: column; align-items: flex-start; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .nav-dock { padding: 8px 12px; border-radius: 32px; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo i { font-size: 1.2rem; }
            .article-hero { min-height: 260px; padding: 48px 0 32px; }
            .article-hero h1 { font-size: 1.4rem; }
            .article-hero-meta { gap: 8px 12px; }
            .article-content { padding: 20px 16px; }
            .article-content h2 { font-size: 1.15rem; }
            .article-content p { font-size: 0.9rem; }
            .btn-primary, .btn-outline { padding: 12px 24px; font-size: 0.9rem; }
            .cta-section h2 { font-size: 1.3rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }