/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a365d;
            --color-primary-light: #2a4a7a;
            --color-primary-dark: #0f2440;
            --color-accent: #d4a84b;
            --color-accent-light: #e8c66a;
            --color-accent-dark: #b8912e;
            --color-bg: #f8f7f4;
            --color-bg-alt: #f0ede8;
            --color-bg-card: #ffffff;
            --color-text: #1a1a2e;
            --color-text-light: #5a5a72;
            --color-text-muted: #8a8a9e;
            --color-border: #e2ddd6;
            --color-border-light: #f0ece6;
            --color-white: #ffffff;
            --color-shadow: rgba(26, 54, 93, 0.08);
            --color-shadow-hover: rgba(26, 54, 93, 0.16);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px var(--color-shadow);
            --shadow-md: 0 6px 24px var(--color-shadow);
            --shadow-lg: 0 12px 40px var(--color-shadow-hover);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
            --spacing-section-mobile: 3rem;
            --max-width: 1200px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-primary-dark); }
        h1 { font-size: 3rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 1rem; color: var(--color-text-light); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
        .section-padding { padding: var(--spacing-section) 0; }
        .text-center { text-align: center; }
        .text-accent { color: var(--color-accent); }

        /* ===== 顶部信息条 ===== */
        .top-bar-strip {
            background: var(--color-primary-dark);
            color: var(--color-white);
            padding: 0.4rem 0;
            font-size: 0.85rem;
            line-height: 1.4;
        }
        .top-bar-strip .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-bar-strip .domain-info {
            opacity: 0.85;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .top-bar-strip .domain-info i { font-size: 0.75rem; }
        .top-bar-strip .strip-links { display: flex; gap: 1.25rem; align-items: center; }
        .top-bar-strip .strip-links a { color: var(--color-white); opacity: 0.8; font-size: 0.8rem; transition: var(--transition); }
        .top-bar-strip .strip-links a:hover { opacity: 1; color: var(--color-accent-light); }
        .top-bar-strip .strip-cta {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            padding: 0.2rem 1rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.78rem;
            opacity: 1;
        }
        .top-bar-strip .strip-cta:hover { background: var(--color-accent-light); color: var(--color-primary-dark); }

        /* ===== 主导航 ===== */
        .main-header {
            background: var(--color-white);
            box-shadow: 0 2px 16px var(--color-shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }
        .main-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }
        .site-logo i { color: var(--color-accent); font-size: 1.8rem; }
        .site-logo span { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { color: var(--color-primary); opacity: 0.9; }
        .main-nav { display: flex; align-items: center; gap: 0.25rem; }
        .main-nav a {
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--color-primary); background: var(--color-bg-alt); }
        .main-nav a.active {
            color: var(--color-white);
            background: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active:hover { background: var(--color-primary-light); color: var(--color-white); }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .hamburger:hover { background: var(--color-bg-alt); }
        .nav-overlay { display: none; }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 75, 0.08) 0%, transparent 70%);
        }
        .hero .container { position: relative; z-index: 2; padding-top: 3rem; padding-bottom: 3rem; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(212, 168, 75, 0.18);
            backdrop-filter: blur(6px);
            padding: 0.35rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--color-accent-light);
            border: 1px solid rgba(212, 168, 75, 0.25);
            margin-bottom: 1.5rem;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            color: var(--color-white);
            font-size: 3.5rem;
            line-height: 1.15;
            margin-bottom: 1.2rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .hero h1 .highlight { color: var(--color-accent); }
        .hero p {
            color: rgba(255,255,255,0.8);
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 600px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(212, 168, 75, 0.3);
        }
        .btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212, 168, 75, 0.4); color: var(--color-primary-dark); }
        .btn-outline {
            background: transparent;
            color: var(--color-white);
            border: 2px solid rgba(255,255,255,0.35);
        }
        .btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); background: rgba(212, 168, 75, 0.08); transform: translateY(-2px); }
        .btn-white {
            background: var(--color-white);
            color: var(--color-primary);
            box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        }
        .btn-white:hover { background: var(--color-bg-alt); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.1); color: var(--color-primary); }
        .btn-sm { padding: 0.55rem 1.4rem; font-size: 0.88rem; }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item { text-align: left; }
        .hero-stat-item .num { font-size: 2rem; font-weight: 800; color: var(--color-accent); line-height: 1.2; }
        .hero-stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 0.2rem; }

        /* ===== 板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title h2 { margin-bottom: 0.75rem; position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 4px;
            margin: 0.75rem auto 0;
        }
        .section-title p { max-width: 600px; margin: 0.75rem auto 0; font-size: 1.05rem; }

        /* ===== 核心说明板块 ===== */
        .intro-section { background: var(--color-white); }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .intro-text h2 { margin-bottom: 1.2rem; }
        .intro-text p { margin-bottom: 1.2rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
        .intro-feat-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 1rem; background: var(--color-bg); border-radius: var(--radius-sm); font-weight: 500; font-size: 0.95rem; }
        .intro-feat-item i { color: var(--color-accent); font-size: 1.1rem; flex-shrink: 0; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-image img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }

        /* ===== 分类入口板块 ===== */
        .categories-section { background: var(--color-bg-alt); }
        .category-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .category-card .card-img {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26,54,93,0.6) 0%, transparent 60%);
        }
        .category-card .card-body { padding: 1.75rem; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { font-size: 1.35rem; margin-bottom: 0.6rem; }
        .category-card .card-body p { font-size: 0.95rem; margin-bottom: 1.2rem; flex: 1; }
        .category-card .card-body .btn { align-self: flex-start; }
        .cat-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(212,168,75,0.12);
            color: var(--color-accent-dark);
            margin-bottom: 0.75rem;
            align-self: flex-start;
        }

        /* ===== 最新资讯板块 ===== */
        .news-section { background: var(--color-white); }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }
        .news-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .news-card .card-img { height: 180px; overflow: hidden; }
        .news-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .card-img img { transform: scale(1.05); }
        .news-card .card-body { padding: 1.25rem 1.5rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .news-card .card-meta { display: flex; gap: 1rem; font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 0.5rem; }
        .news-card .card-meta span { display: flex; align-items: center; gap: 0.3rem; }
        .news-card .card-meta .cat { background: rgba(212,168,75,0.12); color: var(--color-accent-dark); padding: 0.1rem 0.6rem; border-radius: 12px; font-weight: 500; }
        .news-card h4 { font-size: 1.05rem; margin-bottom: 0.5rem; flex: 1; }
        .news-card h4 a { color: var(--color-primary-dark); }
        .news-card h4 a:hover { color: var(--color-accent); }
        .news-card .excerpt { font-size: 0.9rem; color: var(--color-text-light); margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .read-more { margin-top: 1rem; font-size: 0.88rem; font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: 0.4rem; }
        .news-card .read-more:hover { color: var(--color-accent); gap: 0.7rem; }

        /* ===== 特色流程 / 数据板块 ===== */
        .features-section { background: var(--color-bg-alt); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .feature-item {
            background: var(--color-white);
            padding: 2.2rem 1.5rem;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .feature-item .icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            color: var(--color-white);
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .feature-item:hover .icon { transform: scale(1.08); background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light)); }
        .feature-item h4 { margin-bottom: 0.5rem; }
        .feature-item p { font-size: 0.92rem; margin-bottom: 0; }

        /* ===== 数据统计区块 ===== */
        .stats-bar {
            background: var(--color-primary);
            padding: 3.5rem 0;
            color: var(--color-white);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item .num { font-size: 2.8rem; font-weight: 800; color: var(--color-accent); line-height: 1.2; }
        .stat-item .label { font-size: 1rem; opacity: 0.8; margin-top: 0.3rem; }
        .stat-item .desc { font-size: 0.85rem; opacity: 0.55; margin-top: 0.15rem; }

        /* ===== 内容卡片板块（更多游戏） ===== */
        .games-section { background: var(--color-white); }
        .games-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .game-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .game-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
        .game-card .card-img { height: 200px; overflow: hidden; position: relative; }
        .game-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .game-card:hover .card-img img { transform: scale(1.06); }
        .game-card .card-img .badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
        }
        .game-card .card-body { padding: 1.2rem 1.25rem 1.4rem; }
        .game-card .card-body h4 { font-size: 1.05rem; margin-bottom: 0.3rem; }
        .game-card .card-body p { font-size: 0.88rem; margin-bottom: 0; }
        .game-card .card-body .rating { color: var(--color-accent); font-size: 0.85rem; margin-top: 0.4rem; display: flex; align-items: center; gap: 0.3rem; }

        /* ===== FAQ 板块 ===== */
        .faq-section { background: var(--color-bg-alt); }
        .faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 1.25rem 1.75rem;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { background: var(--color-bg); }
        .faq-question i { color: var(--color-accent); font-size: 1.1rem; transition: var(--transition); flex-shrink: 0; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.75rem 1.25rem;
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open { display: block; }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            padding: 5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--color-white); font-size: 2.5rem; margin-bottom: 1rem; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }
        .cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .site-logo { color: var(--color-white); margin-bottom: 1rem; }
        .footer-brand .site-logo i { color: var(--color-accent); }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--color-white); background: none; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 320px; line-height: 1.7; }
        .footer-col h5 { color: var(--color-white); font-size: 1rem; margin-bottom: 1.2rem; font-weight: 600; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--color-accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom-links { display: flex; gap: 1.5rem; }
        .footer-bottom-links a { color: rgba(255,255,255,0.4); font-size: 0.85rem; }
        .footer-bottom-links a:hover { color: var(--color-accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .intro-grid { gap: 2rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .games-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.8rem; }
        }

        @media (max-width: 768px) {
            :root { --spacing-section: var(--spacing-section-mobile); }
            .top-bar-strip .container { flex-direction: column; align-items: flex-start; gap: 0.3rem; }
            .top-bar-strip .strip-links { width: 100%; justify-content: flex-start; flex-wrap: wrap; }
            .main-header .container { padding-top: 0.6rem; padding-bottom: 0.6rem; }
            .main-nav { display: none; position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: var(--color-white); flex-direction: column; padding: 5rem 2rem 2rem; box-shadow: -4px 0 30px rgba(0,0,0,0.12); transition: var(--transition); z-index: 2000; gap: 0.5rem; overflow-y: auto; }
            .main-nav.open { right: 0; display: flex; }
            .main-nav a { padding: 0.7rem 1.2rem; font-size: 1.05rem; border-radius: 10px; width: 100%; }
            .hamburger { display: block; z-index: 2500; position: relative; }
            .nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 1500; }
            .nav-overlay.open { display: block; }
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
            .hero-stat-item .num { font-size: 1.6rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-image { order: -1; }
            .intro-image img { min-height: 220px; }
            .intro-features { grid-template-columns: 1fr; }
            .category-cards { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .feature-item { padding: 1.5rem 1rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
            .stat-item .num { font-size: 2rem; }
            .games-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .game-card .card-img { height: 150px; }
            .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { justify-content: center; }
            .section-title { margin-bottom: 2.5rem; }
            .cta-section { padding: 3rem 0; }
            .cta-section h2 { font-size: 1.8rem; }
        }

        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.92rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { justify-content: center; }
            .features-grid { grid-template-columns: 1fr; }
            .games-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
            .hero-stats { flex-direction: column; gap: 1rem; }
            .news-grid { grid-template-columns: 1fr; }
            .faq-question { padding: 1rem 1.25rem; font-size: 0.95rem; }
            .faq-answer { padding: 0 1.25rem 1rem; }
        }

        /* ===== 辅助样式 ===== */
        .empty-state { padding: 3rem 1rem; text-align: center; color: var(--color-text-muted); font-size: 1rem; background: var(--color-bg); border-radius: var(--radius-md); }
        .empty-state i { font-size: 2.5rem; color: var(--color-border); margin-bottom: 1rem; display: block; }
        .grid-margin-x > .cell { padding-left: 0.75rem; padding-right: 0.75rem; }
        .grid-x { display: flex; flex-flow: row wrap; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #0f1724;
            --clr-primary-light: #1a2744;
            --clr-accent: #c9a84c;
            --clr-accent-hover: #dbb95d;
            --clr-accent-soft: #f5e8c8;
            --clr-bg: #f8f7f4;
            --clr-bg-alt: #ffffff;
            --clr-bg-dark: #0a0f1a;
            --clr-text: #1a1a2e;
            --clr-text-light: #5a5a72;
            --clr-text-inverse: #f0ede8;
            --clr-border: #e2ddd6;
            --clr-border-light: #f0ece6;
            --clr-shadow: rgba(15, 23, 36, 0.08);
            --clr-shadow-heavy: rgba(15, 23, 36, 0.16);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-top-height: 40px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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(--clr-text);
            background: var(--clr-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--clr-primary);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-sm);
        }

        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 var(--space-sm);
        }

        /* ===== Header / 顶部信息条 ===== */
        .header-top {
            background: var(--clr-primary);
            color: var(--clr-text-inverse);
            font-size: 0.8rem;
            height: var(--header-top-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .header-top .top-left {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .header-top .top-left i {
            color: var(--clr-accent);
            margin-right: 4px;
        }

        .header-top .top-right {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .header-top .top-right a {
            color: var(--clr-text-inverse);
            font-size: 0.8rem;
            opacity: 0.8;
            transition: opacity var(--transition);
        }
        .header-top .top-right a:hover {
            opacity: 1;
            color: var(--clr-accent);
        }

        .header-top .top-right .divider {
            color: rgba(255, 255, 255, 0.15);
        }

        /* ===== 主导航 ===== */
        .main-header {
            background: var(--clr-bg-alt);
            border-bottom: 1px solid var(--clr-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px var(--clr-shadow);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

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

        .site-logo span {
            background: linear-gradient(135deg, var(--clr-primary) 40%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0.5rem 1.1rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--clr-text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.9rem;
            color: var(--clr-accent);
            opacity: 0.6;
            transition: opacity var(--transition);
        }

        .main-nav a:hover {
            color: var(--clr-primary);
            background: var(--clr-bg);
        }
        .main-nav a:hover i {
            opacity: 1;
        }

        .main-nav a.active {
            color: var(--clr-primary);
            font-weight: 600;
            background: var(--clr-accent-soft);
        }

        .main-nav a.active i {
            opacity: 1;
            color: var(--clr-accent);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--clr-accent);
            border-radius: 4px 4px 0 0;
        }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--clr-bg);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--clr-primary);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* 移动端导航面板 */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: calc(var(--header-top-height) + var(--nav-height));
            left: 0;
            right: 0;
            background: var(--clr-bg-alt);
            border-bottom: 2px solid var(--clr-border);
            box-shadow: 0 8px 24px var(--clr-shadow-heavy);
            z-index: 99;
            padding: var(--space-sm) 0;
            transform: translateY(-10px);
            opacity: 0;
            transition: all 0.3s ease;
            pointer-events: none;
        }

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

        .mobile-nav-panel a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0.85rem var(--space-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--clr-text-light);
            border-left: 3px solid transparent;
            transition: all var(--transition);
        }
        .mobile-nav-panel a i {
            color: var(--clr-accent);
            width: 20px;
            text-align: center;
        }
        .mobile-nav-panel a:hover {
            background: var(--clr-bg);
            color: var(--clr-primary);
        }
        .mobile-nav-panel a.active {
            color: var(--clr-primary);
            font-weight: 600;
            border-left-color: var(--clr-accent);
            background: var(--clr-accent-soft);
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--clr-bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: var(--space-xl) var(--space-sm);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 36, 0.85) 30%, rgba(15, 23, 36, 0.55) 100%);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 76, 0.18);
            border: 1px solid rgba(201, 168, 76, 0.3);
            color: var(--clr-accent);
            font-size: 0.82rem;
            font-weight: 500;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.3px;
        }
        .page-hero .hero-badge i {
            font-size: 0.75rem;
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: -1px;
            line-height: 1.15;
        }

        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto var(--space-md);
            line-height: 1.7;
        }

        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 0.7rem 1.8rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--clr-accent);
            color: var(--clr-primary);
        }
        .btn-primary:hover {
            background: var(--clr-accent-hover);
            color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201, 168, 76, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: rgba(201, 168, 76, 0.1);
            transform: translateY(-2px);
        }

        .btn-outline-dark {
            background: transparent;
            color: var(--clr-primary);
            border: 2px solid var(--clr-border);
        }
        .btn-outline-dark:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: var(--clr-accent-soft);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 0.45rem 1.2rem;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 0.9rem 2.4rem;
            font-size: 1.05rem;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-lg) 0;
        }

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

        .section-dark {
            background: var(--clr-bg-dark);
            color: var(--clr-text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto var(--space-lg);
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
            letter-spacing: -0.5px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--clr-text-light);
            line-height: 1.7;
        }

        .section-header .header-line {
            width: 60px;
            height: 4px;
            background: var(--clr-accent);
            border-radius: 4px;
            margin: var(--space-sm) auto 0;
        }

        .section-header.light p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-header.light .header-line {
            background: var(--clr-accent);
        }

        /* ===== 平台概览 ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }

        .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 12px 40px var(--clr-shadow-heavy);
            background: var(--clr-bg-alt);
        }
        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .overview-text h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            color: var(--clr-primary);
        }
        .overview-text p {
            font-size: 1rem;
            color: var(--clr-text-light);
            line-height: 1.8;
            margin-bottom: var(--space-sm);
        }
        .overview-text .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: var(--space-sm);
        }
        .overview-text .feature-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--clr-accent-soft);
            color: var(--clr-primary);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .overview-text .feature-tags span i {
            color: var(--clr-accent);
            font-size: 0.75rem;
        }

        /* ===== 核心功能卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .feature-card {
            background: var(--clr-bg-alt);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
            box-shadow: 0 2px 8px var(--clr-shadow);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px var(--clr-shadow-heavy);
            border-color: var(--clr-accent);
        }

        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--clr-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--space-sm);
            font-size: 1.4rem;
            color: var(--clr-accent);
            transition: all var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--clr-accent);
            color: var(--clr-bg-alt);
        }

        .feature-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--clr-primary);
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--clr-text-light);
            line-height: 1.7;
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
            counter-reset: step;
        }

        .step-card {
            background: var(--clr-bg-alt);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
            border: 1px solid var(--clr-border-light);
            position: relative;
            transition: all var(--transition);
            box-shadow: 0 2px 8px var(--clr-shadow);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px var(--clr-shadow-heavy);
        }

        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--clr-accent);
            color: var(--clr-primary);
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-sm);
            font-family: var(--font-family);
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--clr-primary);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--clr-text-light);
            line-height: 1.7;
        }

        .step-card .step-connector {
            display: none;
        }

        /* ===== 平台优势 / 数据块 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

        .advantage-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
            transition: all var(--transition);
        }
        .advantage-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--clr-accent);
            transform: translateY(-4px);
        }

        .advantage-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--clr-accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .advantage-card .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
        }
        .advantage-card p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 8px;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: var(--space-sm);
        }

        .faq-item {
            background: var(--clr-bg-alt);
            border: 1px solid var(--clr-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: 0 1px 4px var(--clr-shadow);
        }
        .faq-item:hover {
            border-color: var(--clr-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--clr-primary);
            gap: var(--space-sm);
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--clr-bg);
        }
        .faq-question i {
            color: var(--clr-accent);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--clr-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: var(--clr-primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            padding: var(--space-xl) 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 36, 0.88) 30%, rgba(15, 23, 36, 0.65) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--space-xs);
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto var(--space-md);
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--space-lg) 0 0;
            font-size: 0.92rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-brand .site-logo {
            color: #fff;
            margin-bottom: var(--space-sm);
        }
        .site-footer .footer-brand .site-logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .site-footer .footer-brand .site-logo i {
            color: var(--clr-accent);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }

        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--clr-accent);
        }
        .site-footer .footer-col ul li a i {
            font-size: 0.8rem;
            color: var(--clr-accent);
            opacity: 0.6;
        }

        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--space-md) 0;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom-links {
            display: flex;
            gap: var(--space-sm);
        }
        .site-footer .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.85rem;
        }
        .site-footer .footer-bottom-links a:hover {
            color: var(--clr-accent);
        }

        /* ===== 面包屑 ===== */
        .breadcrumbs {
            background: var(--clr-bg);
            padding: 0.7rem 0;
            border-bottom: 1px solid var(--clr-border-light);
            font-size: 0.85rem;
        }
        .breadcrumbs .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumbs a {
            color: var(--clr-text-light);
        }
        .breadcrumbs a:hover {
            color: var(--clr-accent);
        }
        .breadcrumbs .sep {
            color: var(--clr-border);
            font-size: 0.75rem;
        }
        .breadcrumbs .current {
            color: var(--clr-text);
            font-weight: 500;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-lg: 3rem;
                --space-xl: 4rem;
            }

            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav-panel {
                display: block;
            }

            .page-hero {
                min-height: 280px;
                padding: var(--space-lg) var(--space-sm);
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .overview-image {
                order: -1;
            }
            .overview-image img {
                min-height: 220px;
            }
            .overview-text h3 {
                font-size: 1.5rem;
            }

            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-sm);
            }
            .feature-card {
                padding: var(--space-sm);
            }

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

            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }
            .advantage-card .stat-number {
                font-size: 2rem;
            }

            .section-header h2 {
                font-size: 1.7rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.7rem;
            }

            .faq-question {
                padding: 0.9rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 1.2rem 1rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .overview-text h3 {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 0.7rem 1.6rem;
                font-size: 0.95rem;
            }
            .header-top .top-right span {
                display: none;
            }
            .site-logo span {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--space-sm);
        }
        .mt-md {
            margin-top: var(--space-md);
        }
        .mb-sm {
            margin-bottom: var(--space-sm);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .gap-sm {
            gap: var(--space-sm);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-x {
            margin-left: 0;
            margin-right: 0;
        }
        .cell {
            padding: 0;
        }

/* roulang page: article */
:root {
  --primary: #1a2a4a;
  --primary-light: #2c4a7c;
  --primary-dark: #0f1a30;
  --accent: #d4a843;
  --accent-light: #e8c46a;
  --accent-dark: #b8922e;
  --bg-body: #f5f6fa;
  --bg-card: #ffffff;
  --bg-dark: #0f1a30;
  --bg-soft: #eef0f5;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-weak: #8888a0;
  --text-light: #f0f0f5;
  --border-color: #e0e2e8;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(26, 42, 74, 0.06);
  --shadow-md: 0 8px 30px rgba(26, 42, 74, 0.10);
  --shadow-lg: 0 20px 60px rgba(26, 42, 74, 0.15);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  --container-max: 1200px;
  --header-top-bg: #0a1220;
  --header-main-bg: rgba(26, 42, 74, 0.97);
  --footer-bg: #0a1220;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg-body); color: var(--text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; width: 100%; }
/* 顶部信息条 */
.top-info-bar {
  background: var(--header-top-bg);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.top-info-bar .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.top-info-bar .domain-info { display: flex; align-items: center; gap: 6px; }
.top-info-bar .domain-info i { color: var(--accent); font-size: 0.75rem; }
.top-info-bar .top-cta { color: var(--accent); font-weight: 600; font-size: 0.8rem; padding: 2px 12px; border: 1px solid var(--accent); border-radius: 20px; transition: var(--transition); }
.top-info-bar .top-cta:hover { background: var(--accent); color: #0a1220; }
/* 主导航 */
.site-header { position: sticky; top: 0; z-index: 1000; background: var(--header-main-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.header-inner { padding: 0 0; }
.header-inner .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.site-logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 800; color: #fff; letter-spacing: 1px; }
.site-logo i { color: var(--accent); font-size: 1.6rem; }
.site-logo span { background: linear-gradient(135deg, #fff 40%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { display: flex; align-items: center; gap: 6px; padding: 8px 18px; border-radius: 30px; font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.75); transition: var(--transition); position: relative; }
.main-nav a i { font-size: 0.85rem; }
.main-nav a:hover, .main-nav a.active { color: #fff; background: rgba(212, 168, 67, 0.18); }
.main-nav a.active { color: var(--accent); background: rgba(212, 168, 67, 0.15); box-shadow: 0 0 20px rgba(212,168,67,0.08); }
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; padding: 4px 8px; border-radius: 6px; transition: var(--transition); }
.menu-toggle:hover { background: rgba(255,255,255,0.08); }
/* 移动端导航 */
@media (max-width: 820px) {
  .main-nav { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: var(--primary-dark); flex-direction: column; padding: 70px 24px 30px; gap: 6px; transition: var(--transition); box-shadow: -10px 0 40px rgba(0,0,0,0.4); z-index: 999; overflow-y: auto; }
  .main-nav.open { right: 0; }
  .main-nav a { width: 100%; padding: 12px 20px; font-size: 1rem; border-radius: 10px; }
  .menu-toggle { display: block; z-index: 1001; }
  .menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 998; }
  .menu-overlay.open { display: block; }
}
/* 文章Banner */
.article-banner {
  position: relative;
  padding: 80px 0 60px;
  background: var(--primary-dark);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-blend-mode: overlay;
  color: #fff;
  overflow: hidden;
}
.article-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,26,48,0.85) 0%, rgba(26,42,74,0.70) 100%); z-index: 1; }
.article-banner .container { position: relative; z-index: 2; }
.article-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 24px; flex-wrap: wrap; }
.article-breadcrumb a { color: rgba(255,255,255,0.7); }
.article-breadcrumb a:hover { color: var(--accent); }
.article-breadcrumb .sep { color: rgba(255,255,255,0.3); }
.article-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--accent); color: #0a1220; padding: 4px 16px; border-radius: 30px; font-size: 0.8rem; font-weight: 700; margin-bottom: 16px; }
.article-banner h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.3; max-width: 900px; margin-bottom: 16px; letter-spacing: 0.5px; }
.article-meta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 0.9rem; color: rgba(255,255,255,0.7); }
.article-meta i { color: var(--accent); margin-right: 4px; }
.article-meta span { display: flex; align-items: center; gap: 4px; }
/* 正文区域 */
.article-main { padding: 50px 0 60px; }
.article-grid { display: grid; grid-template-columns: 1fr 320px; gap: 40px; }
.article-content-wrap { min-width: 0; }
.article-content { background: var(--bg-card); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
.article-content h2 { font-size: 1.6rem; font-weight: 700; margin: 32px 0 16px; color: var(--primary); }
.article-content h3 { font-size: 1.25rem; font-weight: 600; margin: 24px 0 12px; color: var(--primary); }
.article-content p { margin-bottom: 18px; color: var(--text-secondary); font-size: 1rem; line-height: 1.85; }
.article-content ul, .article-content ol { margin: 16px 0 20px; padding-left: 24px; list-style: disc; }
.article-content li { margin-bottom: 8px; color: var(--text-secondary); }
.article-content blockquote { border-left: 4px solid var(--accent); background: var(--bg-soft); padding: 16px 24px; margin: 20px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-secondary); font-style: italic; }
.article-content img { margin: 24px 0; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.article-content a { color: var(--accent-dark); font-weight: 500; border-bottom: 1px solid transparent; }
.article-content a:hover { border-bottom-color: var(--accent); }
/* 侧边栏 */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card { background: var(--bg-card); border-radius: var(--radius); padding: 28px 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
.sidebar-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.sidebar-card h4 i { color: var(--accent); font-size: 1rem; }
.sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border-color); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { display: flex; align-items: flex-start; gap: 12px; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; }
.sidebar-list a:hover { color: var(--accent-dark); }
.sidebar-list a i { color: var(--accent); font-size: 0.75rem; margin-top: 4px; }
.sidebar-cats a { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; background: var(--bg-soft); border-radius: var(--radius-sm); margin-bottom: 8px; color: var(--text-secondary); font-size: 0.9rem; transition: var(--transition); }
.sidebar-cats a:hover { background: var(--accent); color: #0a1220; }
.sidebar-cats a span { background: var(--primary); color: #fff; padding: 0 10px; border-radius: 12px; font-size: 0.75rem; }
/* 文章导航（上一篇/下一篇） */
.article-nav { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.article-nav a { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px 24px; transition: var(--transition); display: flex; flex-direction: column; gap: 4px; }
.article-nav a:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.article-nav .nav-label { font-size: 0.8rem; color: var(--text-weak); text-transform: uppercase; letter-spacing: 1px; }
.article-nav .nav-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.article-nav a:hover .nav-title { color: var(--accent-dark); }
.article-nav .nav-next { text-align: right; }
/* 相关推荐 */
.related-section { padding: 60px 0; background: var(--bg-soft); }
.related-section .section-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 32px; color: var(--primary); text-align: center; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.related-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); transition: var(--transition); }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-card .card-img { height: 160px; background: var(--bg-soft); overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; }
.related-card .card-body { padding: 16px 18px 20px; }
.related-card .card-body h5 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body h5 a { color: var(--text-primary); }
.related-card .card-body h5 a:hover { color: var(--accent-dark); }
.related-card .card-body .meta { font-size: 0.8rem; color: var(--text-weak); display: flex; align-items: center; gap: 12px; }
/* CTA区域 */
.cta-section { padding: 60px 0; background: var(--primary-dark); background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; background-blend-mode: overlay; color: #fff; text-align: center; position: relative; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,26,48,0.85) 0%, rgba(26,42,74,0.75) 100%); z-index: 1; }
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 28px; }
.cta-btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 40px; background: var(--accent); color: #0a1220; font-weight: 700; font-size: 1rem; border-radius: 50px; transition: var(--transition); border: none; cursor: pointer; }
.cta-btn:hover { background: var(--accent-light); color: #0a1220; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(212,168,67,0.3); }
/* 页脚 */
.site-footer { background: var(--footer-bg); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .site-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
.footer-col h5 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer-col h5::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--accent); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.45); font-size: 0.85rem; }
.footer-bottom-links a:hover { color: var(--accent); }
/* 内容未找到 */
.not-found-wrap { text-align: center; padding: 100px 20px; }
.not-found-wrap h1 { font-size: 2.4rem; color: var(--primary); margin-bottom: 16px; }
.not-found-wrap p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 28px; }
.not-found-wrap .button { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: 50px; font-weight: 600; transition: var(--transition); }
.not-found-wrap .button:hover { background: var(--accent); color: #0a1220; transform: translateY(-2px); }
/* 响应式 */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .article-banner { padding: 50px 0 40px; }
  .article-banner h1 { font-size: 1.7rem; }
  .article-content { padding: 24px 20px; }
  .article-content h2 { font-size: 1.3rem; }
  .article-nav { grid-template-columns: 1fr; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .cta-section h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .article-banner h1 { font-size: 1.4rem; }
  .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-breadcrumb { font-size: 0.75rem; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8a;
            --primary-dark: #0f1f33;
            --accent: #f5a623;
            --accent-light: #ffc44d;
            --accent-dark: #d4881a;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1f33;
            --bg-section-alt: #eef2f7;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e0e4eb;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --topbar-height: 40px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.8rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

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

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--primary-dark);
            color: var(--text-white);
            font-size: 0.85rem;
            height: var(--topbar-height);
            display: flex;
            align-items: center;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }
        .topbar-left span {
            opacity: 0.8;
            font-size: 0.8rem;
        }
        .topbar-right {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .topbar-right a {
            color: var(--text-white);
            font-size: 0.8rem;
            opacity: 0.85;
            transition: opacity var(--transition);
        }
        .topbar-right a:hover {
            opacity: 1;
            color: var(--accent-light);
        }
        .topbar-right .btn-topbar {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 2px 14px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.78rem;
            opacity: 1;
        }
        .topbar-right .btn-topbar:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
        }

        /* ===== 主导航 ===== */
        .main-nav {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -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: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a i {
            margin-right: 6px;
            font-size: 0.9rem;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 58, 92, 0.25);
        }
        .nav-links a.active:hover {
            background: var(--primary-light);
        }
        .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
        }
        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== Hero / 横幅 ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 100px 0 80px;
            text-align: center;
            color: var(--text-white);
            position: relative;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 31, 51, 0.55);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-size: 2.8rem;
            margin-bottom: 16px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 28px;
            opacity: 0.9;
            line-height: 1.8;
        }
        .hero-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-badges .badge {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-badges .badge i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3 {
            color: var(--text-white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 12px;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 12px auto 0;
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

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

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-section-alt);
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .card-body h3 a {
            color: var(--text-primary);
        }
        .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-top: 8px;
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .tag {
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: var(--text-white);
        }
        .tag-accent {
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent-dark);
        }
        .tag-accent:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 58, 92, 0.3);
            color: var(--text-white);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.35);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }
        .btn-block {
            width: 100%;
            justify-content: center;
        }

        /* ===== 特色玩法区块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .feature-item {
            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-color);
            transition: all var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: rgba(26, 58, 92, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: var(--text-white);
        }
        .feature-item h4 {
            margin-bottom: 8px;
            font-size: 1.1rem;
        }
        .feature-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== 步骤流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step {
            text-align: center;
            position: relative;
            padding-top: 40px;
        }
        .step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step h4 {
            margin-bottom: 8px;
            font-size: 1.1rem;
        }
        .step p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .section-dark .step p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(255, 255, 255, 0.15);
            margin-bottom: 8px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            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-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(26, 58, 92, 0.03);
        }
        .faq-question i {
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 80px 0;
            text-align: center;
            color: var(--text-white);
            position: relative;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 31, 51, 0.4);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
        }
        .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);
        }
        .footer-brand .site-logo {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand .site-logo span {
            -webkit-text-fill-color: var(--text-white);
            background: none;
        }
        .footer-brand p {
            font-size: 0.9rem;
            opacity: 0.75;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            margin-right: 6px;
            color: var(--accent);
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            opacity: 0.7;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .topbar-left span {
                font-size: 0.7rem;
            }
            .topbar-right {
                gap: 8px;
            }
            .topbar-right a {
                font-size: 0.72rem;
            }
            .topbar-right .btn-topbar {
                padding: 2px 10px;
                font-size: 0.7rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 2px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active {
                background: var(--primary);
                color: var(--text-white);
            }
            .nav-toggle {
                display: block;
            }
            .page-hero {
                padding: 60px 0 50px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .card-grid-2,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .card-body {
                padding: 16px;
            }
            .hero-badges .badge {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 1rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-2 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .d-none {
            display: none;
        }
        .d-block {
            display: block;
        }
        @media (min-width: 769px) {
            .d-md-block {
                display: block;
            }
            .d-md-none {
                display: none;
            }
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--max-width);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }