/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #0a0e27;
            --clr-primary-light: #151b44;
            --clr-accent: #ff4d4d;
            --clr-accent-hover: #e63939;
            --clr-gold: #ffb800;
            --clr-blue: #2d7dff;
            --clr-blue-hover: #1a6ae6;
            --clr-bg: #f4f6f9;
            --clr-bg-alt: #eef0f5;
            --clr-card: #ffffff;
            --clr-text: #1a1a2e;
            --clr-text-weak: #6c7a8e;
            --clr-text-light: #9aa8b8;
            --clr-border: #e8ecf1;
            --clr-success: #22c55e;
            --clr-warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --space-section: 90px;
            --space-section-mobile: 50px;
            --font-main: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-main);
            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-blue); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-blue-hover); }
        a:focus-visible { outline: 2px solid var(--clr-blue); outline-offset: 2px; }
        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: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-wide { max-width: 1360px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
            .container-wide { padding: 0 16px; }
        }

        /* ===== 顶部信息条 ===== */
        .top-bar-strip {
            background: var(--clr-primary);
            color: rgba(255,255,255,0.75);
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .top-bar-strip .container-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-bar-strip .strip-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar-strip .strip-left i { color: var(--clr-gold); margin-right: 4px; }
        .top-bar-strip .strip-left span { opacity: 0.85; }
        .top-bar-strip .strip-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-bar-strip .strip-right a {
            color: rgba(255,255,255,0.7);
            font-size: 13px;
            transition: color var(--transition);
        }
        .top-bar-strip .strip-right a:hover { color: var(--clr-gold); }
        .top-bar-strip .strip-right .domain-tag {
            background: rgba(255,255,255,0.10);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            color: rgba(255,255,255,0.6);
            letter-spacing: 0.3px;
        }
        @media (max-width: 640px) {
            .top-bar-strip { font-size: 12px; padding: 6px 0; }
            .top-bar-strip .strip-left span { display: none; }
            .top-bar-strip .strip-right .domain-tag { display: none; }
        }

        /* ===== 主导航 ===== */
        .main-header {
            background: var(--clr-card);
            box-shadow: 0 2px 16px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .main-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.08); }
        .main-header .container-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--clr-primary);
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--clr-accent);
            font-size: 28px;
        }
        .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; }
        .site-logo .logo-suffix { font-weight: 300; color: var(--clr-text-weak); font-size: 14px; letter-spacing: 0.5px; -webkit-text-fill-color: var(--clr-text-weak); background: none; }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--clr-text);
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--clr-accent); background: rgba(255,77,77,0.05); }
        .main-nav a.active { color: var(--clr-accent); background: rgba(255,77,77,0.08); font-weight: 600; }
        .main-nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--clr-accent); border-radius: 4px; }
        .main-nav .nav-cta {
            background: var(--clr-accent);
            color: #fff !important;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover { background: var(--clr-accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(255,77,77,0.3); }
        .main-nav .nav-cta::after { display: none !important; }

        /* 移动端菜单按钮 */
        .menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; background: none; border: none; }
        .menu-toggle span { display: block; width: 26px; height: 2.5px; background: var(--clr-primary); border-radius: 4px; transition: all var(--transition); }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 820px) {
            .menu-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--clr-card);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                z-index: 999;
                pointer-events: none;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .main-nav a { padding: 12px 16px; width: 100%; font-size: 16px; border-radius: var(--radius-sm); }
            .main-nav a.active::after { display: none; }
            .main-nav a.active { background: rgba(255,77,77,0.08); }
            .main-nav .nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(10,14,39,0.92) 0%, rgba(21,27,68,0.88) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 80px 24px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,77,77,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(45,125,255,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(10px);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 14px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .hero-badge i { color: var(--clr-gold); font-size: 16px; }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight { color: var(--clr-gold); }
        .hero p {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: rgba(255,255,255,0.75);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .hero-actions .btn-primary {
            background: var(--clr-accent);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 20px rgba(255,77,77,0.3);
        }
        .hero-actions .btn-primary:hover { background: var(--clr-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,77,77,0.4); }
        .hero-actions .btn-secondary {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 600;
            border: 1px solid rgba(255,255,255,0.15);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-secondary:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); border-color: rgba(255,255,255,0.25); }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
            padding: 0 10px;
        }
        .hero-stats .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-gold);
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }
        @media (max-width: 640px) {
            .hero { min-height: 70vh; padding: 60px 16px; }
            .hero-stats { gap: 24px; }
            .hero-stats .stat-num { font-size: 1.5rem; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: var(--space-section) 0; }
        .section-alt { background: var(--clr-bg-alt); }
        .section-dark { background: var(--clr-primary); color: rgba(255,255,255,0.85); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--clr-text-weak);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-dark .section-header p { color: rgba(255,255,255,0.6); }
        .section-divider {
            width: 50px;
            height: 4px;
            background: var(--clr-accent);
            border-radius: 4px;
            margin: 16px auto 0;
        }
        @media (max-width: 640px) {
            .section { padding: var(--space-section-mobile) 0; }
            .section-header { margin-bottom: 32px; }
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            padding: 28px 24px;
            transition: all var(--transition);
            border: 1px solid var(--clr-border);
        }
        .card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .card-img { border-radius: var(--radius-md) var(--radius-md) 0 0; overflow: hidden; margin: -28px -24px 20px; }
        .card-img img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.5s; }
        .card:hover .card-img img { transform: scale(1.05); }
        .card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .card p { color: var(--clr-text-weak); font-size: 0.95rem; line-height: 1.6; }
        .card-tag {
            display: inline-block;
            background: rgba(45,125,255,0.10);
            color: var(--clr-blue);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* ===== 按钮 ===== */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: all var(--transition); text-align: center; }
        .btn-primary { background: var(--clr-accent); color: #fff; box-shadow: 0 4px 14px rgba(255,77,77,0.25); }
        .btn-primary:hover { background: var(--clr-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,77,77,0.35); color: #fff; }
        .btn-outline { background: transparent; color: var(--clr-blue); border: 2px solid var(--clr-blue); }
        .btn-outline:hover { background: var(--clr-blue); color: #fff; transform: translateY(-2px); }
        .btn-gold { background: var(--clr-gold); color: var(--clr-primary); box-shadow: 0 4px 14px rgba(255,184,0,0.3); }
        .btn-gold:hover { background: #e6a600; transform: translateY(-2px); color: var(--clr-primary); }
        .btn-sm { padding: 8px 18px; font-size: 13px; }
        .btn-lg { padding: 16px 40px; font-size: 18px; }

        /* ===== 分类入口板块 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--clr-card);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            border: 1px solid var(--clr-border);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-6px); }
        .category-card .cat-img { height: 220px; overflow: hidden; }
        .category-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
        .category-card:hover .cat-img img { transform: scale(1.08); }
        .category-card .cat-body { padding: 28px 26px 30px; flex: 1; display: flex; flex-direction: column; }
        .category-card .cat-body h3 { font-size: 1.4rem; margin-bottom: 10px; }
        .category-card .cat-body p { color: var(--clr-text-weak); font-size: 0.95rem; line-height: 1.7; margin-bottom: 18px; flex: 1; }
        .category-card .cat-body .btn { align-self: flex-start; }
        .category-card .cat-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255,77,77,0.92);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 768px) {
            .category-grid { grid-template-columns: 1fr; gap: 20px; }
            .category-card .cat-img { height: 180px; }
        }

        /* ===== 最新资讯列表 ===== */
        .post-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .post-item {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: transparent; }
        .post-item .post-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--clr-text-light);
            margin-bottom: 10px;
        }
        .post-item .post-meta .cat-badge {
            background: rgba(255,184,0,0.12);
            color: #b8860b;
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 12px;
        }
        .post-item h3 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.4; }
        .post-item h3 a { color: var(--clr-primary); }
        .post-item h3 a:hover { color: var(--clr-accent); }
        .post-item p { color: var(--clr-text-weak); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .post-item .post-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--clr-border);
            font-size: 13px;
            color: var(--clr-text-light);
        }
        .post-item .post-footer a { color: var(--clr-blue); font-weight: 500; font-size: 13px; }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--clr-text-weak);
            background: var(--clr-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--clr-border);
        }
        .post-empty i { font-size: 2rem; color: var(--clr-text-light); margin-bottom: 12px; display: block; }
        @media (max-width: 768px) {
            .post-list { grid-template-columns: 1fr; }
        }

        /* ===== 数据/统计板块 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
        .stats-card {
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-md);
            padding: 36px 20px;
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }
        .stats-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
        .stats-card .stat-icon { font-size: 2.2rem; color: var(--clr-gold); margin-bottom: 14px; }
        .stats-card .stat-num { font-size: 2.4rem; font-weight: 800; color: #fff; line-height: 1.2; }
        .stats-card .stat-label { font-size: 15px; color: rgba(255,255,255,0.6); margin-top: 6px; }
        @media (max-width: 820px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stats-card { padding: 24px 12px; }
            .stats-card .stat-num { font-size: 1.8rem; }
        }

        /* ===== 使用流程（时间轴） ===== */
        .steps { display: flex; gap: 30px; justify-content: center; flex-wrap: wrap; counter-reset: step; }
        .step-item {
            flex: 1;
            min-width: 200px;
            max-width: 280px;
            text-align: center;
            position: relative;
            padding: 36px 20px 28px;
            background: var(--clr-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--clr-accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(255,77,77,0.3);
        }
        .step-item .step-icon { font-size: 2rem; color: var(--clr-blue); margin-bottom: 14px; margin-top: 4px; }
        .step-item h4 { font-size: 1.1rem; margin-bottom: 8px; }
        .step-item p { font-size: 0.9rem; color: var(--clr-text-weak); line-height: 1.6; }
        @media (max-width: 768px) {
            .steps { flex-direction: column; align-items: center; }
            .step-item { max-width: 100%; width: 100%; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: rgba(255,77,77,0.15); }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--clr-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover { background: rgba(255,77,77,0.02); }
        .faq-item .faq-q i { color: var(--clr-accent); font-size: 14px; transition: transform var(--transition); }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--clr-text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a { display: block; }
        @media (max-width: 640px) {
            .faq-item .faq-q { padding: 14px 16px; font-size: 0.95rem; }
            .faq-item .faq-a { padding: 0 16px 14px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
            padding: 70px 24px;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 0 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,77,77,0.10) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); color: #fff; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.65); font-size: 1.05rem; max-width: 560px; margin: 0 auto 30px; }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-section .btn-primary { background: var(--clr-gold); color: var(--clr-primary); box-shadow: 0 4px 20px rgba(255,184,0,0.3); }
        .cta-section .btn-primary:hover { background: #e6a600; box-shadow: 0 8px 30px rgba(255,184,0,0.4); }
        .cta-section .btn-outline-light { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.25); }
        .cta-section .btn-outline-light:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.4); }
        @media (max-width: 640px) {
            .cta-section { margin: 0 8px; padding: 50px 16px; border-radius: var(--radius-md); }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-primary);
            color: rgba(255,255,255,0.65);
            padding: 50px 0 0;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .footer-brand .site-logo { color: #fff; margin-bottom: 14px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand .site-logo i { color: var(--clr-accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul a:hover { color: var(--clr-gold); }
        .footer-bottom { padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.35); }
        .footer-bottom a { color: rgba(255,255,255,0.45); }
        .footer-bottom a:hover { color: var(--clr-gold); }
        .footer-bottom .sep { margin: 0 8px; opacity: 0.3; }
        @media (max-width: 820px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
            .footer-brand p { max-width: 100%; }
        }

        /* ===== 回到顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            background: var(--clr-accent);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 18px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(255,77,77,0.3);
            transition: all var(--transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            z-index: 999;
        }
        .back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-top:hover { background: var(--clr-accent-hover); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(255,77,77,0.4); }

        /* ===== Foundation 覆写 ===== */
        .grid-container { max-width: 1200px; }
        .button { transition: all var(--transition); }
        .card { border-radius: var(--radius-md); box-shadow: var(--shadow-md); border: 1px solid var(--clr-border); }
        .card-section { padding: 24px 22px; }
        .card-divider { background: var(--clr-bg-alt); }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            .container { max-width: 100%; }
        }
        @media (max-width: 640px) {
            body { font-size: 15px; }
        }

/* roulang page: article */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-soft: #dbeafe;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #8b5cf6;
            --bg-white: #ffffff;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-inverse: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 40px rgba(37, 99, 235, 0.15);
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-top-bg: #0f172a;
            --nav-bg: rgba(255, 255, 255, 0.97);
            --footer-bg: #0f172a;
            --footer-text: rgba(255, 255, 255, 0.7);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ===== Header Top Bar ===== */
        .header-top {
            background: var(--header-top-bg);
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.82rem;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .header-top a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.82rem;
        }
        .header-top a:hover {
            color: #fff;
        }
        .header-top .top-left span {
            margin-right: 18px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .header-top .top-left i {
            font-size: 0.7rem;
            opacity: 0.7;
        }
        .header-top .top-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-top .top-right a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        @media screen and (max-width: 640px) {
            .header-top .container {
                justify-content: center;
                text-align: center;
                font-size: 0.75rem;
            }
            .header-top .top-left span {
                margin-right: 10px;
            }
        }
        /* ===== Main Navigation ===== */
        .main-nav {
            background: var(--nav-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0;
            padding-bottom: 0;
            min-height: 64px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .site-logo .logo-suffix {
            font-weight: 400;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px 4px 0 0;
        }
        .nav-links a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .nav-links a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-light);
        }
        .nav-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        @media screen and (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 2px solid var(--border-color);
                padding: 12px 20px 20px;
                box-shadow: var(--shadow-lg);
                gap: 4px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.nav-cta {
                margin-top: 6px;
                justify-content: center;
            }
            .main-nav .container {
                min-height: 56px;
            }
            .site-logo {
                font-size: 1.15rem;
            }
            .site-logo .logo-suffix {
                font-size: 0.75rem;
            }
        }
        /* ===== Page Banner ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 200px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.4px;
            line-height: 1.25;
        }
        .page-banner .banner-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        .page-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .page-banner .banner-meta i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .page-banner .banner-meta .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 255, 255, 0.12);
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(4px);
        }
        @media screen and (max-width: 768px) {
            .page-banner {
                padding: 40px 0 36px;
                min-height: 160px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-meta {
                font-size: 0.82rem;
                gap: 10px 16px;
            }
        }
        @media screen and (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.3rem;
            }
            .page-banner .banner-meta {
                flex-direction: column;
                gap: 6px;
            }
        }
        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-main .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-main .article-body p {
            margin-bottom: 1.2em;
        }
        .article-main .article-body h2,
        .article-main .article-body h3,
        .article-main .article-body h4 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--text-primary);
        }
        .article-main .article-body h2 {
            font-size: 1.6rem;
        }
        .article-main .article-body h3 {
            font-size: 1.25rem;
        }
        .article-main .article-body ul,
        .article-main .article-body ol {
            margin-bottom: 1.2em;
            padding-left: 1.5em;
        }
        .article-main .article-body li {
            margin-bottom: 0.4em;
        }
        .article-main .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-main .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-main .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-main .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 20px;
            margin: 1.2em 0;
            background: var(--primary-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-main .article-body .cms-code {
            background: #1e293b;
            color: #e2e8f0;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-family: 'Fira Code', 'Consolas', monospace;
            font-size: 0.9rem;
            margin: 1.2em 0;
        }
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .article-not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }
        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 26px 24px;
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            padding-left: 16px;
        }
        .sidebar-card ul li a i {
            font-size: 0.75rem;
            color: var(--text-light);
            width: 18px;
            text-align: center;
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud a {
            display: inline-flex;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--bg-light);
            color: var(--text-secondary);
            font-size: 0.82rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .sidebar-card .tag-cloud a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        .sidebar-card .cta-mini {
            display: block;
            text-align: center;
            background: var(--primary);
            color: #fff;
            padding: 12px 0;
            border-radius: 40px;
            font-weight: 600;
            margin-top: 12px;
            transition: var(--transition);
        }
        .sidebar-card .cta-mini:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }
        @media screen and (max-width: 1024px) {
            .article-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media screen and (max-width: 640px) {
            .article-section {
                padding: 36px 0 50px;
            }
            .article-main {
                padding: 24px 18px;
            }
            .article-main .article-body {
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-main .article-body h2 {
                font-size: 1.3rem;
            }
            .article-main .article-body h3 {
                font-size: 1.1rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }
        /* ===== Related / CTA ===== */
        .related-section {
            background: var(--bg-white);
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 36px;
            color: var(--text-primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 160px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .related-card .card-body h3 a {
            color: var(--text-primary);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .meta {
            font-size: 0.78rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        @media screen and (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media screen and (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== CTA Block ===== */
        .article-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            padding: 48px 0;
            text-align: center;
            color: #fff;
        }
        .article-cta h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .article-cta .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }
        @media screen and (max-width: 640px) {
            .article-cta h2 {
                font-size: 1.4rem;
            }
            .article-cta p {
                font-size: 0.92rem;
            }
            .article-cta .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 50px 0 0;
            font-size: 0.92rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.7;
            margin-top: 8px;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom .sep {
            opacity: 0.3;
            user-select: none;
        }
        @media screen and (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px 20px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media screen and (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
            .footer-bottom .sep {
                display: none;
            }
        }
        /* ===== Utility ===== */
        .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-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-soft: #eff6ff;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --dark: #0f172a;
            --dark-light: #1e293b;
            --gray-50: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-400: #94a3b8;
            --gray-500: #64748b;
            --gray-600: #475569;
            --gray-700: #334155;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
            --max-width: 1280px;
            --header-top-bg: #0f172a;
            --nav-bg: #ffffff;
            --footer-bg: #0f172a;
        }

        /* ===== 基础 Reset ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--gray-50);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul,ol { list-style: none; padding: 0; margin: 0; }
        button,.button { cursor: pointer; font-family: var(--font); border: none; outline: none; transition: var(--transition); }
        input,textarea,select { font-family: var(--font); outline: none; transition: var(--transition); }
        h1,h2,h3,h4,h5,h6 { line-height: 1.3; color: var(--dark); font-weight: 700; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 2.2rem; margin-bottom: 12px; letter-spacing: -0.5px; }
        .section-title p { color: var(--text-light); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

        /* ===== 顶部信息条 ===== */
        .header-top {
            background: var(--header-top-bg);
            color: rgba(255,255,255,0.7);
            font-size: 0.85rem;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .header-top a { color: rgba(255,255,255,0.7); font-size: 0.85rem; }
        .header-top a:hover { color: #fff; }
        .header-top .top-left { display: flex; align-items: center; gap: 16px; }
        .header-top .top-left i { margin-right: 6px; color: var(--secondary); }
        .header-top .top-right { display: flex; align-items: center; gap: 16px; }
        .header-top .top-right .badge {
            background: var(--secondary);
            color: #0f172a;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ===== 主导航 ===== */
        .main-nav {
            background: var(--nav-bg);
            padding: 0;
            box-shadow: 0 2px 16px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--gray-200);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
        }
        .site-logo i { color: var(--primary); font-size: 1.8rem; }
        .site-logo .logo-suffix { font-weight: 400; color: var(--gray-400); font-size: 0.9rem; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--gray-600);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: var(--primary-soft); }
        .nav-links a.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-links .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(37,99,235,0.3);
        }
        .nav-links .nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.35); color: #fff !important; }
        .nav-links .nav-cta i { margin-right: 6px; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--dark); padding: 8px; cursor: pointer; }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            font-size: 3rem;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            font-weight: 800;
        }
        .page-banner h1 i { color: var(--secondary); margin-right: 12px; }
        .page-banner p {
            color: rgba(255,255,255,0.7);
            font-size: 1.2rem;
            max-width: 640px;
            line-height: 1.8;
        }
        .page-banner .banner-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
        .page-banner .banner-tags span {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.8);
            border: 1px solid rgba(255,255,255,0.08);
        }

        /* ===== 平台分类卡片 ===== */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .platform-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--gray-200);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .platform-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .platform-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: var(--primary-soft);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
        }
        .platform-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
        .platform-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }
        .platform-card .badge {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary-soft);
            color: var(--primary);
        }

        /* ===== 热门游戏推荐 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 24px;
        }
        .game-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--gray-200);
        }
        .game-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .game-card .game-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--gray-200);
        }
        .game-card .game-info { padding: 18px 20px 20px; }
        .game-card .game-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .game-card .game-info .meta { color: var(--text-light); font-size: 0.85rem; display: flex; align-items: center; gap: 12px; }
        .game-card .game-info .meta i { margin-right: 4px; }
        .game-card .game-info .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-soft);
            color: var(--primary);
            margin-top: 8px;
        }

        /* ===== 平台对比 ===== */
        .compare-section { background: #fff; }
        .compare-table-wrap { overflow-x: auto; margin-top: 24px; }
        .compare-table { width: 100%; border-collapse: collapse; min-width: 600px; }
        .compare-table th {
            background: var(--dark);
            color: #fff;
            padding: 16px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .compare-table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--gray-200);
            font-size: 0.95rem;
            color: var(--gray-600);
        }
        .compare-table tr:hover td { background: var(--gray-50); }
        .compare-table .check { color: var(--accent); font-weight: 700; }
        .compare-table .cross { color: var(--gray-400); }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
        }
        .step-card h4 { font-size: 1.1rem; margin-bottom: 8px; }
        .step-card p { color: var(--text-light); font-size: 0.92rem; line-height: 1.7; }

        /* ===== 安全提示 ===== */
        .safety-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
        .safety-item {
            display: flex;
            gap: 18px;
            background: #fff;
            padding: 24px 28px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
            align-items: flex-start;
        }
        .safety-item:hover { box-shadow: var(--shadow-hover); }
        .safety-item .s-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: var(--primary-soft);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }
        .safety-item h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .safety-item p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: #fff;
            transition: var(--transition);
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-question.active i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 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: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2.4rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 16px 48px rgba(0,0,0,0.2); color: var(--primary-dark); }
        .cta-section .cta-btn i { font-size: 1.2rem; }

        /* ===== 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: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .footer-brand .site-logo { color: #fff; font-size: 1.4rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand p { font-size: 0.92rem; line-height: 1.8; color: rgba(255,255,255,0.5); margin-top: 12px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: #fff; }
        .footer-bottom .sep { color: rgba(255,255,255,0.15); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .platform-grid { grid-template-columns: repeat(2,1fr); }
            .game-grid { grid-template-columns: repeat(2,1fr); }
            .steps-grid { grid-template-columns: repeat(2,1fr); }
            .footer-grid { grid-template-columns: repeat(2,1fr); }
            .page-banner h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; background: #fff; position: absolute; top: 72px; left: 0; right: 0; padding: 16px 24px; box-shadow: 0 20px 40px rgba(0,0,0,0.1); border-radius: 0 0 var(--radius) var(--radius); }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; }
            .nav-links a.active::after { display: none; }
            .nav-toggle { display: block; }
            .page-banner { padding: 60px 0 40px; min-height: 220px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 1rem; }
            .platform-grid { grid-template-columns: 1fr; }
            .game-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .safety-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .section { padding: 48px 0; }
            .section-title h2 { font-size: 1.6rem; }
            .compare-table th,.compare-table td { padding: 10px 12px; font-size: 0.85rem; }
            .header-top .top-left span { display: none; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .cta-btn { padding: 14px 28px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-banner h1 { font-size: 1.5rem; }
            .platform-card { padding: 24px 18px; }
            .game-card .game-img { height: 140px; }
            .safety-item { flex-direction: column; align-items: center; text-align: center; }
            .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
            .footer-bottom .sep { display: none; }
            .header-top .top-right .badge { display: none; }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #6c3fc5;
            --primary-dark: #4a2899;
            --primary-light: #8b5cf6;
            --primary-gradient: linear-gradient(135deg, #6c3fc5 0%, #4a2899 100%);
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
            --bg-body: #f8f7fc;
            --bg-card: #ffffff;
            --bg-dark: #1a1035;
            --bg-dark-alt: #23184a;
            --text: #1a1035;
            --text-light: #6b5b8a;
            --text-white: #faf9ff;
            --border: #e4def0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(108,63,197,0.08), 0 1px 2px rgba(108,63,197,0.06);
            --shadow: 0 4px 20px rgba(108,63,197,0.10), 0 2px 6px rgba(108,63,197,0.06);
            --shadow-lg: 0 12px 40px rgba(108,63,197,0.15), 0 4px 12px rgba(108,63,197,0.08);
            --shadow-accent: 0 8px 30px rgba(245,158,11,0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --topbar-h: 40px;
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            background: var(--bg-body);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary-dark); outline: none; }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 56px 0; }
        .text-center { text-align: center; }

        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.6rem; }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { font-size: 1.1rem; max-width: 640px; margin: 0 auto; color: var(--text-light); }

        /* ========== 顶部信息条 ========== */
        .topbar {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            height: var(--topbar-h);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .topbar .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
        .topbar a { color: rgba(255,255,255,0.7); font-size: 0.85rem; }
        .topbar a:hover { color: #fff; }
        .topbar .topbar-right { display: flex; gap: 20px; align-items: center; }
        .topbar .topbar-right i { margin-right: 6px; }

        /* ========== 主导航 ========== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            height: var(--header-h);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text);
        }
        .site-logo i { color: var(--primary); font-size: 1.6rem; }
        .site-logo .logo-suffix { font-weight: 400; color: var(--text-light); font-size: 0.9rem; }
        .site-logo:hover { color: var(--primary); }

        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--primary); background: rgba(108,63,197,0.06); }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(108,63,197,0.10);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .main-nav .nav-cta {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(108,63,197,0.30);
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,63,197,0.40);
            background: linear-gradient(135deg, #7c4fd7 0%, #5a31a8 100%);
        }
        .main-nav .nav-cta i { margin-right: 6px; }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .hamburger span { display: block; width: 26px; height: 3px; background: var(--text); border-radius: 2px; transition: var(--transition); }

        /* ========== Hero ========== */
        .hero-inner {
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(26,16,53,0.92) 0%, rgba(35,24,74,0.88) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }
        .hero-inner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(108,63,197,0.15) 0%, transparent 50%),
                        radial-gradient(circle at 70% 60%, rgba(245,158,11,0.10) 0%, transparent 40%);
            animation: heroGlow 12s ease-in-out infinite alternate;
        }
        @keyframes heroGlow {
            0% { transform: translate(0,0) scale(1); }
            100% { transform: translate(2%,2%) scale(1.05); }
        }
        .hero-inner .hero-content { position: relative; z-index: 2; max-width: 800px; }
        .hero-inner h1 {
            color: #fff;
            font-size: 3rem;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero-inner h1 i { color: var(--accent); margin-right: 10px; }
        .hero-inner p {
            color: rgba(255,255,255,0.75);
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .hero-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255,255,255,0.12);
            border-radius: 50px;
            padding: 6px;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.10);
        }
        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 14px 20px;
            color: #fff;
            font-size: 1rem;
            outline: none;
        }
        .hero-search input::placeholder { color: rgba(255,255,255,0.5); }
        .hero-search button {
            background: var(--accent-gradient);
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .hero-search button:hover { transform: scale(1.04); box-shadow: var(--shadow-accent); }

        /* ========== 登录方式 ========== */
        .login-methods { background: #fff; }
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: var(--bg-body);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border);
            cursor: default;
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .method-card .icon-wrap {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: #fff;
            box-shadow: 0 8px 24px rgba(108,63,197,0.25);
        }
        .method-card h4 { margin-bottom: 10px; font-size: 1.2rem; }
        .method-card p { font-size: 0.95rem; margin-bottom: 0; }
        .method-card .badge {
            display: inline-block;
            background: rgba(108,63,197,0.10);
            color: var(--primary);
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 50px;
            font-weight: 600;
            margin-top: 14px;
        }

        /* ========== 常见问题 ========== */
        .common-issues { background: var(--bg-body); }
        .issues-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .issue-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: default;
        }
        .issue-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--primary-light); }
        .issue-card .issue-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(108,63,197,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
        }
        .issue-card .issue-body h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .issue-card .issue-body p { font-size: 0.92rem; margin-bottom: 0; }
        .issue-card .issue-body .tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            margin-top: 8px;
        }

        /* ========== 找回流程 ========== */
        .recover-flow {
            background: #fff;
        }
        .flow-timeline {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            position: relative;
            max-width: 960px;
            margin: 0 auto;
        }
        .flow-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            border-radius: 2px;
            z-index: 0;
        }
        .flow-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            background: #fff;
            padding: 12px;
        }
        .flow-step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 auto 16px;
            box-shadow: 0 8px 24px rgba(108,63,197,0.25);
        }
        .flow-step h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .flow-step p { font-size: 0.9rem; margin-bottom: 0; max-width: 180px; margin-left: auto; margin-right: auto; }

        /* ========== 安全提示 ========== */
        .safety-tips {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(26,16,53,0.95) 0%, rgba(35,24,74,0.90) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
        }
        .safety-tips .section-title h2 { color: #fff; }
        .safety-tips .section-title p { color: rgba(255,255,255,0.65); }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .tip-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.10);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .tip-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
        .tip-card .tip-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .tip-card h4 { color: #fff; font-size: 1.05rem; margin-bottom: 8px; }
        .tip-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-bottom: 0; }

        /* ========== FAQ ========== */
        .faq-section { background: var(--bg-body); }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 20px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            font-family: var(--font);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--primary); font-size: 0.9rem; transition: var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            display: none;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--primary-gradient);
            text-align: center;
            padding: 72px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
                        radial-gradient(circle at 70% 50%, rgba(245,158,11,0.08) 0%, transparent 40%);
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }
        .cta-section .cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-btn-primary {
            background: #fff;
            color: var(--primary) !important;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
        }
        .cta-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.25); }
        .cta-btn-secondary {
            background: rgba(255,255,255,0.15);
            color: #fff !important;
            border: 1px solid rgba(255,255,255,0.25);
        }
        .cta-btn-secondary:hover { background: rgba(255,255,255,0.25); transform: translateY(-3px); }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { font-size: 1.4rem; }
        .footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.9rem; margin-top: 14px; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-bottom .sep { color: rgba(255,255,255,0.15); }

        /* ========== 响应式 ========== */
        @media screen and (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .methods-grid { grid-template-columns: repeat(2, 1fr); }
            .tips-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-timeline { flex-wrap: wrap; justify-content: center; }
            .flow-timeline::before { display: none; }
            .flow-step { flex: 0 0 45%; }
        }

        @media screen and (max-width: 768px) {
            :root { --header-h: 64px; --topbar-h: 36px; }
            .section-pad { padding: 56px 0; }
            .section-pad-sm { padding: 40px 0; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .hero-inner { min-height: 300px; padding: 60px 20px; }
            .hero-inner h1 { font-size: 2rem; }
            .hero-inner p { font-size: 1rem; }

            .hamburger { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                gap: 12px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a { width: 100%; text-align: center; padding: 12px; }
            .main-nav a.active::after { display: none; }
            .main-nav .nav-cta { margin-left: 0; }

            .methods-grid { grid-template-columns: 1fr; }
            .issues-grid { grid-template-columns: 1fr; }
            .tips-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 6px; }
            .footer-bottom .sep { display: none; }
            .flow-step { flex: 0 0 100%; max-width: 280px; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-btn { width: 100%; justify-content: center; }
            .topbar .topbar-right span { display: none; }
        }

        @media screen and (max-width: 520px) {
            .container { padding: 0 16px; }
            h1 { font-size: 1.5rem; }
            h2 { font-size: 1.3rem; }
            .hero-inner h1 { font-size: 1.6rem; }
            .hero-search { flex-direction: column; border-radius: var(--radius); background: rgba(255,255,255,0.08); }
            .hero-search input { text-align: center; }
            .hero-search button { border-radius: var(--radius-sm); margin-top: 4px; }
            .method-card { padding: 24px 18px; }
            .issue-card { flex-direction: column; text-align: center; align-items: center; }
            .faq-question { font-size: 0.95rem; padding: 16px 18px; }
            .faq-answer { padding: 0 18px 16px; }
            .topbar { font-size: 0.8rem; }
            .topbar .topbar-right { gap: 10px; }
        }

        /* ========== 实用辅助 ========== */
        .badge-pill {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .badge-primary { background: rgba(108,63,197,0.10); color: var(--primary); }
        .badge-accent { background: rgba(245,158,11,0.15); color: #b45309; }

        .grid-x { display: flex; flex-wrap: wrap; }
        .cell { padding: 0 12px; }

        /* 手风琴 active 样式保持 */
        .faq-item.active { border-color: var(--primary); }
        .faq-item.active .faq-question { color: var(--primary); }