/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --c-primary: #0b0f2a;
            --c-primary-light: #161d42;
            --c-accent: #00d4ff;
            --c-accent-alt: #f0b90b;
            --c-bg-dark: #050a1e;
            --c-bg-light: #f4f6fc;
            --c-white: #ffffff;
            --c-text-strong: #0d1220;
            --c-text-body: #3a4050;
            --c-text-muted: #7b8196;
            --c-border: #e3e7f0;
            --r-sm: 8px;
            --r-md: 14px;
            --r-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(11, 15, 42, .06);
            --shadow-md: 0 10px 30px rgba(11, 15, 42, .10);
            --shadow-lg: 0 18px 50px rgba(11, 15, 42, .16);
            --tr-fast: all .25s ease;
            --tr-slow: all .4s cubic-bezier(.25, .8, .3, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--c-text-body);
            background: var(--c-bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--c-text-body);
            text-decoration: none;
            transition: var(--tr-fast);
        }
        a:hover {
            color: var(--c-accent);
            text-decoration: none;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--c-text-strong);
            line-height: 1.2;
            margin: 0 0 8px;
        }
        p {
            margin: 0 0 16px;
        }
        button {
            font-family: inherit;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--r-md);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            cursor: pointer;
            border: 2px solid transparent;
            transition: var(--tr-fast);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--c-accent);
            color: var(--c-bg-dark);
            box-shadow: 0 4px 14px rgba(0, 212, 255, .35);
        }
        .btn-primary:hover {
            background: #00b8d9;
            color: var(--c-bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 212, 255, .45);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .6);
        }
        .btn-outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, .12);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .btn:focus-visible,
        .nav-toggle:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid rgba(0, 212, 255, .5);
            outline-offset: 2px;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(5, 10, 30, .82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: var(--tr-fast);
        }
        .site-header.scrolled {
            background: rgba(5, 10, 30, .96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, .2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
        }
        .brand {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: .5px;
            margin-right: 40px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .brand i {
            color: var(--c-accent);
            font-size: 20px;
        }
        .brand:hover {
            color: var(--c-accent);
        }
        .main-nav {
            flex: 1;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            display: inline-block;
            padding: 10px 18px;
            color: rgba(255, 255, 255, .85);
            border-radius: var(--r-sm);
            font-size: 15px;
            font-weight: 500;
            transition: var(--tr-fast);
        }
        .main-nav a:hover {
            color: var(--c-accent);
            background: rgba(255, 255, 255, .06);
        }
        .main-nav a.active {
            color: var(--c-accent);
            background: rgba(0, 212, 255, .12);
            font-weight: 600;
        }
        .header-cta {
            margin-left: 16px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            line-height: 1;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--r-sm);
        }
        .nav-toggle:hover {
            color: var(--c-accent);
            background: rgba(255, 255, 255, .08);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 170px 0 130px;
            background: linear-gradient(135deg, rgba(5, 10, 30, .9), rgba(11, 15, 42, .72)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            min-height: 680px;
            display: flex;
            align-items: center;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(0, 212, 255, .15);
            color: var(--c-accent);
            border: 1px solid rgba(0, 212, 255, .3);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            margin-bottom: 22px;
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero h1 {
            color: #fff;
            font-size: 54px;
            font-weight: 800;
            line-height: 1.1;
            margin: 0 0 18px;
            letter-spacing: 1px;
        }
        .hero h1 span {
            color: var(--c-accent);
        }
        .hero p.lead {
            color: rgba(255, 255, 255, .85);
            font-size: 18px;
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-panel {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--r-lg);
            padding: 32px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .3);
            position: relative;
        }
        .panel-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 16px;
            border-radius: 50px;
            background: rgba(240, 185, 11, .16);
            color: var(--c-accent-alt);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .hero-panel h3 {
            color: #fff;
            font-size: 22px;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .hero-panel p {
            color: rgba(255, 255, 255, .75);
            font-size: 14px;
            margin-bottom: 22px;
        }
        .panel-meta {
            display: flex;
            gap: 22px;
            border-top: 1px solid rgba(255, 255, 255, .15);
            padding-top: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            flex-wrap: wrap;
        }
        .panel-meta i {
            margin-right: 4px;
            color: var(--c-accent);
        }

        /* ===== 统计面板 ===== */
        .stats-panel {
            position: relative;
            z-index: 5;
            margin-top: -70px;
            padding-bottom: 70px;
        }
        .stat-item {
            background: var(--c-white);
            border-radius: var(--r-lg);
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border-top: 3px solid var(--c-accent);
            transition: var(--tr-fast);
            height: 100%;
        }
        .stat-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--c-primary);
            line-height: 1.1;
        }
        .stat-num .suffix {
            color: var(--c-accent);
            font-size: 28px;
        }
        .stat-label {
            color: var(--c-text-muted);
            margin-top: 8px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 1px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--c-white);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-eyebrow {
            display: inline-block;
            color: var(--c-accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 4px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.2;
        }
        .section-head p {
            color: var(--c-text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ===== 核心特色 ===== */
        .feature-card {
            background: var(--c-white);
            border-radius: var(--r-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--tr-fast);
            border: 1px solid var(--c-border);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 212, 255, .3);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--c-accent);
            background: rgba(0, 212, 255, .1);
            margin-bottom: 22px;
            transition: var(--tr-fast);
        }
        .feature-card:hover .feature-icon {
            background: var(--c-accent);
            color: var(--c-bg-dark);
            transform: rotate(-4deg) scale(1.05);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--c-text-muted);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== 分类入口 ===== */
        .category-card {
            border-radius: var(--r-lg);
            overflow: hidden;
            background: var(--c-white);
            box-shadow: var(--shadow-sm);
            transition: var(--tr-fast);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
            display: block;
        }
        .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover .category-cover img {
            transform: scale(1.06);
        }
        .category-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(5, 10, 30, .55), transparent 55%);
        }
        .category-cover .cat-icon {
            position: absolute;
            bottom: 18px;
            left: 20px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(0, 212, 255, .9);
            color: var(--c-bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 6px 20px rgba(0, 212, 255, .4);
            z-index: 1;
        }
        .category-card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card-body p {
            font-size: 14px;
            color: var(--c-text-muted);
            margin-bottom: 16px;
            flex: 1;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--c-accent);
            font-weight: 600;
            font-size: 14px;
            transition: var(--tr-fast);
        }
        .category-link:hover {
            gap: 12px;
            color: var(--c-primary);
        }

        /* ===== 最新资讯 ===== */
        .latest {
            background: var(--c-bg-light);
        }
        .news-card {
            background: var(--c-white);
            border-radius: var(--r-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--tr-fast);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .news-cover {
            position: relative;
            height: 190px;
            display: block;
            overflow: hidden;
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-cover img {
            transform: scale(1.04);
        }
        .news-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(5, 10, 30, .85);
            color: var(--c-accent);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .news-body {
            padding: 22px 22px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body h3 a {
            color: var(--c-text-strong);
        }
        .news-body h3 a:hover {
            color: var(--c-accent);
        }
        .news-body p {
            font-size: 14px;
            color: var(--c-text-muted);
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--c-border);
            padding-top: 14px;
        }
        .meta-date {
            font-size: 13px;
            color: var(--c-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-date i {
            color: var(--c-accent);
        }
        .meta-link {
            font-size: 13px;
            color: var(--c-accent);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .meta-link:hover {
            gap: 9px;
            color: var(--c-primary);
        }
        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--c-white);
            border-radius: var(--r-lg);
            color: var(--c-text-muted);
            font-size: 16px;
            box-shadow: var(--shadow-sm);
            border: 1px dashed var(--c-border);
        }

        /* ===== 热门排行 ===== */
        .ranking {
            background: var(--c-bg-dark);
            color: #fff;
            position: relative;
            padding: 90px 0;
        }
        .ranking:before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: .08;
        }
        .ranking .section-head {
            position: relative;
            z-index: 1;
        }
        .ranking .section-head h2 {
            color: #fff;
        }
        .ranking .section-head p {
            color: rgba(255, 255, 255, .6);
        }
        .rank-list {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 22px 26px;
            background: rgba(255, 255, 255, .05);
            border-radius: var(--r-md);
            margin-bottom: 14px;
            border: 1px solid rgba(255, 255, 255, .08);
            transition: var(--tr-fast);
            flex-wrap: wrap;
        }
        .rank-item:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(0, 212, 255, .4);
            transform: translateX(6px);
        }
        .rank-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--c-accent-alt);
            width: 54px;
            text-align: center;
            font-style: italic;
            line-height: 1;
        }
        .rank-info {
            flex: 1;
            min-width: 180px;
        }
        .rank-info h4 {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .rank-info p {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.5;
        }
        .rank-tag {
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(0, 212, 255, .15);
            color: var(--c-accent);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
        }
        .rank-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--c-accent);
            min-width: 56px;
            text-align: right;
        }

        /* ===== 流程步骤 ===== */
        .process-item {
            text-align: center;
            padding: 30px 24px;
            position: relative;
            transition: var(--tr-fast);
        }
        .process-item:hover {
            transform: translateY(-4px);
        }
        .process-icon {
            width: 76px;
            height: 76px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: var(--c-accent);
            color: var(--c-bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            box-shadow: 0 8px 24px rgba(0, 212, 255, .3);
            position: relative;
            z-index: 1;
            transition: var(--tr-slow);
        }
        .process-item:hover .process-icon {
            transform: scale(1.08);
            box-shadow: 0 12px 32px rgba(0, 212, 255, .4);
        }
        .process-item:not(:last-child)::after {
            content: "";
            position: absolute;
            top: 66px;
            right: -28px;
            width: 56px;
            height: 2px;
            background: linear-gradient(to right, var(--c-accent), rgba(0, 212, 255, .1));
            z-index: 0;
        }
        .process-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .process-item p {
            font-size: 14px;
            color: var(--c-text-muted);
            margin-bottom: 0;
            max-width: 220px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--c-white);
            border: 1px solid var(--c-border);
            border-radius: var(--r-md);
            margin-bottom: 14px;
            transition: var(--tr-fast);
            overflow: hidden;
        }
        .faq-item.active {
            border-color: rgba(0, 212, 255, .45);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text-strong);
            cursor: pointer;
            text-align: left;
            border-radius: var(--r-md);
            transition: var(--tr-fast);
        }
        .faq-question:hover {
            color: var(--c-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(0, 212, 255, .12);
            color: var(--c-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform .3s ease, background .3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--c-accent);
            color: var(--c-bg-dark);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 22px;
            max-height: 400px;
        }
        .faq-answer p {
            color: var(--c-text-muted);
            font-size: 14px;
            margin-bottom: 0;
            border-top: 1px solid var(--c-border);
            padding-top: 16px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--c-primary), var(--c-bg-dark));
            color: #fff;
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, .15), transparent 60%);
            border-radius: 50%;
        }
        .cta h2 {
            color: #fff;
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
        }
        .cta p {
            color: rgba(255, 255, 255, .7);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 16px;
            line-height: 1.7;
            position: relative;
        }
        .cta .btn {
            position: relative;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050a1e;
            color: rgba(255, 255, 255, .6);
            padding: 60px 0 26px;
        }
        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            margin-bottom: 22px;
        }
        .footer-brand {
            flex: 1 1 280px;
        }
        .footer-brand .brand {
            font-size: 20px;
            margin-right: 0;
        }
        .footer-brand p {
            font-size: 14px;
            margin-top: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
        }
        .footer-col {
            flex: 1 1 150px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .footer-col ul li {
            margin-bottom: 9px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            line-height: 1.5;
        }
        .footer-col a:hover {
            color: var(--c-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom a:hover {
            color: var(--c-accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 42px;
            }
            .hero-inner {
                grid-template-columns: 1fr .9fr;
                gap: 40px;
            }
            .process-item:not(:last-child)::after {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .site-header.scrolled {
                background: rgba(5, 10, 30, .96);
            }
            .nav-toggle {
                display: block;
            }
            .header-cta {
                display: none;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--c-bg-dark);
                padding: 20px 24px;
                transform: translateX(100%);
                transition: transform .35s ease;
                box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
                border-top: 1px solid rgba(255, 255, 255, .08);
            }
            .main-nav.open {
                transform: translateX(0);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 4px;
            }
            .main-nav a {
                display: block;
                padding: 14px 16px;
                font-size: 16px;
            }
            .hero {
                padding: 140px 0 110px;
                min-height: auto;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero p.lead {
                font-size: 16px;
            }
            .section {
                padding: 70px 0;
            }
            .section-head h2 {
                font-size: 30px;
            }
            .stats-panel {
                margin-top: -50px;
                padding-bottom: 50px;
            }
            .stat-num {
                font-size: 34px;
            }
            .stat-num .suffix {
                font-size: 22px;
            }
            .rank-item {
                padding: 18px;
                gap: 14px;
            }
            .rank-num {
                width: 40px;
                font-size: 24px;
            }
            .hero-panel {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 30px;
            }
            .hero p.lead {
                font-size: 15px;
            }
            .btn-lg {
                padding: 14px 26px;
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 14px;
            }
            .rank-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .rank-value {
                text-align: left;
            }
            .rank-tag {
                align-self: flex-start;
            }
            .cta h2 {
                font-size: 28px;
            }
            .footer-top {
                flex-direction: column;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer,
            .faq-item.active .faq-answer {
                padding: 0 18px 18px;
            }
        }

/* roulang page: article */
:root {
            --c-bg: #0a0e1f;
            --c-bg-card: #111a33;
            --c-bg-elev: #1b2547;
            --c-primary: #ffb400;
            --c-primary-soft: #ffd166;
            --c-accent: #2de2d0;
            --c-text: #f5f7ff;
            --c-dim: #99a3bd;
            --c-border: rgba(255, 255, 255, 0.1);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.22);
            --space: 80px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--c-bg);
            color: var(--c-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .grid-container {
            max-width: 1200px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all 0.3s ease;
            cursor: pointer;
            border: 1px solid transparent;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--c-primary), #ff9400);
            color: #0a0e1f;
            border-color: transparent;
            box-shadow: 0 4px 20px rgba(255, 180, 0, 0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus-visible {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 180, 0, 0.45);
            background: linear-gradient(135deg, var(--c-primary-soft), #ffb400);
            color: #0a0e1f;
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.3);
            color: var(--c-text);
        }
        .btn-outline:hover,
        .btn-outline:focus-visible {
            border-color: var(--c-primary);
            color: var(--c-primary);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--c-accent);
            outline-offset: 2px;
        }

        /* ===== 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: rgba(255, 180, 0, 0.14);
            border: 1px solid rgba(255, 180, 0, 0.3);
            color: var(--c-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            font-size: 13px;
            color: var(--c-dim);
            transition: all 0.3s ease;
            margin: 0 6px 6px 0;
        }
        .tag:hover {
            border-color: var(--c-accent);
            color: var(--c-accent);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 31, 0.88);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--c-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand i {
            color: var(--c-primary);
            font-size: 24px;
        }
        .brand:hover {
            color: var(--c-primary);
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--c-dim);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }
        .main-nav a:hover {
            color: var(--c-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--c-primary);
            background: rgba(255, 180, 0, 0.12);
            border-color: rgba(255, 180, 0, 0.2);
            font-weight: 600;
        }
        .header-cta {
            padding: 10px 24px;
            font-size: 14px;
            flex-shrink: 0;
        }
        .nav-toggle {
            background: transparent;
            color: var(--c-text);
            font-size: 22px;
            padding: 6px 10px;
            cursor: pointer;
            border-radius: 8px;
            display: none;
            transition: color 0.3s;
        }
        .nav-toggle:hover {
            color: var(--c-primary);
        }

        /* ===== 文章横幅 ===== */
        .article-hero {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, rgba(8, 12, 30, 0.96), rgba(15, 25, 55, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--c-dim);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--c-dim);
        }
        .breadcrumb a:hover {
            color: var(--c-primary);
        }
        .breadcrumb i {
            font-size: 12px;
            opacity: 0.6;
        }
        .article-hero-content h1 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            color: #fff;
        }
        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--c-dim);
        }
        .article-hero-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero-meta .meta-item i {
            color: var(--c-primary);
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-detail {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .article-content {
            color: #cdd3e8;
            font-size: 16px;
            line-height: 1.9;
        }
        .article-content p {
            margin-bottom: 22px;
            color: #b3bcd4;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--c-primary);
            margin: 32px 0 16px;
            font-weight: 700;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 22px;
            padding-left: 24px;
            color: #b3bcd4;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content a {
            color: var(--accent, #2de2d0);
            border-bottom: 1px dashed rgba(45, 226, 208, 0.4);
        }
        .article-content a:hover {
            color: var(--c-primary);
            border-color: var(--c-primary);
        }
        .article-tags {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--c-border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .article-tags .tag-label {
            font-size: 14px;
            color: var(--c-dim);
            font-weight: 600;
            margin-right: 8px;
        }

        .not-found {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            padding: 70px 40px;
            text-align: center;
        }
        .not-found i {
            font-size: 48px;
            color: var(--c-dim);
            margin-bottom: 20px;
        }
        .not-found h2 {
            font-size: 28px;
            color: var(--c-text);
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--c-dim);
            margin-bottom: 30px;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--c-border);
        }
        .sidebar-card h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 40px;
            height: 3px;
            background: var(--c-primary);
            border-radius: 4px;
        }
        .summary-card p {
            font-size: 14px;
            color: var(--c-dim);
            line-height: 1.75;
        }
        .category-card ul li {
            margin-bottom: 8px;
        }
        .category-card ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
            color: var(--c-dim);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .category-card ul li a:hover {
            background: rgba(255, 180, 0, 0.08);
            border-color: rgba(255, 180, 0, 0.2);
            color: var(--c-primary);
            transform: translateX(3px);
        }
        .category-card ul li a i {
            color: var(--c-primary);
            width: 20px;
            text-align: center;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .recommend-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.25s ease;
        }
        .recommend-item:last-child {
            border-bottom: none;
        }
        .recommend-item:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .recommend-item img {
            width: 72px;
            height: 56px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .recommend-info h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 4px;
            transition: color 0.25s;
        }
        .recommend-info h5 a:hover {
            color: var(--c-primary);
        }
        .recommend-info span {
            font-size: 12px;
            color: var(--c-dim);
        }

        /* ===== 分类入口 ===== */
        .category-cards {
            padding: var(--space) 0;
            background: linear-gradient(180deg, var(--c-bg) 0%, #0d1428 100%);
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header .eyebrow {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--c-primary);
            margin-bottom: 10px;
            font-weight: 700;
        }
        .section-header h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 800;
            color: var(--c-text);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--c-dim);
            max-width: 620px;
            margin: 0 auto;
            font-size: 15px;
        }
        .cat-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cat-card {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(255, 180, 0, 0.25);
        }
        .cat-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.05);
        }
        .cat-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(10, 14, 31, 0.75) 100%);
        }
        .cat-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 8px;
        }
        .cat-card-body p {
            font-size: 14px;
            color: var(--c-dim);
            flex: 1;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cat-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--c-primary);
            font-size: 14px;
            font-weight: 600;
            transition: gap 0.3s;
        }
        .cat-card-link:hover {
            gap: 12px;
            color: var(--c-primary-soft);
        }

        /* ===== 数据面板 ===== */
        .data-panel {
            padding: var(--space) 0;
            background: url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat, linear-gradient(135deg, #0a0e1f, #080d22);
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
            position: relative;
        }
        .data-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 12, 30, 0.88);
            backdrop-filter: blur(3px);
        }
        .data-panel .container {
            position: relative;
            z-index: 1;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .data-item {
            background: rgba(17, 26, 51, 0.7);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            padding: 32px 20px;
            backdrop-filter: blur(6px);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .data-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
            border-color: rgba(255, 180, 0, 0.2);
        }
        .data-item .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--c-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-item .label {
            font-size: 14px;
            color: var(--c-dim);
            letter-spacing: 1px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space) 0;
            background: var(--c-bg);
        }
        .faq-panel {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .accordion-item.is-active {
            border-color: rgba(255, 180, 0, 0.25);
        }
        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text);
            cursor: pointer;
            transition: color 0.3s;
            background: transparent;
            border: none;
            border-radius: var(--radius);
            width: 100%;
            text-align: left;
        }
        .accordion-title:hover {
            color: var(--c-primary);
        }
        .accordion-title i {
            color: var(--c-primary);
            font-size: 14px;
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }
        .accordion-item.is-active .accordion-title i {
            transform: rotate(180deg);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--c-dim);
            font-size: 14px;
            line-height: 1.8;
            border-top: 0 solid transparent;
        }
        .accordion-item.is-active .accordion-content {
            max-height: 400px;
            padding: 0 24px 22px;
            border-top-width: 1px;
            border-color: var(--c-border);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(255, 180, 0, 0.12), rgba(255, 148, 0, 0.05)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-top: 1px solid var(--c-border);
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 12, 30, 0.82);
        }
        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-box p {
            color: var(--c-dim);
            font-size: 16px;
            margin-bottom: 30px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070b19;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 70px 0 30px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 30px;
        }
        .footer-brand .brand {
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--c-dim);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--c-dim);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a {
            color: var(--c-dim);
            transition: all 0.3s;
        }
        .footer-col ul li a:hover {
            color: var(--c-primary);
            padding-left: 4px;
        }
        .footer-col ul li i {
            color: var(--c-primary);
            width: 16px;
            text-align: center;
            font-size: 13px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--c-primary);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .cat-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .header-cta {
                display: none;
            }
        }
        @media screen and (max-width: 768px) {
            .nav-toggle {
                display: inline-block;
            }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 14, 31, 0.97);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--c-border);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            .main-nav.open {
                max-height: 360px;
            }
            .main-nav ul {
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
            }
            .main-nav a {
                display: block;
                padding: 12px 18px;
                border-radius: 10px;
            }
            .article-detail {
                padding: 28px 22px;
            }
            .article-hero {
                padding: 120px 0 40px;
            }
            .article-hero-content h1 {
                font-size: 26px;
            }
        }
        @media screen and (max-width: 520px) {
            :root {
                --space: 56px;
            }
            .cat-card-grid {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .data-item .num {
                font-size: 28px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-hero-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .article-main {
                padding: 40px 0 60px;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --accent: #f59e0b;
            --navy: #0b1020;
            --navy-2: #111a30;
            --bg: #f6f7fb;
            --white: #ffffff;
            --text: #16213e;
            --text-weak: #64748b;
            --border: #e6e9f2;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 32px rgba(20, 32, 76, .08);
            --shadow-lg: 0 20px 48px rgba(20, 32, 76, .14);
            --space: 84px;
            --transition: all .3s cubic-bezier(.25, .8, .35, 1);
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        button {
            background: none;
            border: none;
            cursor: pointer;
            font: inherit;
            color: inherit;
        }
        input,
        textarea,
        select {
            font: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            margin: 0;
        }
        p {
            margin: 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 999px;
            padding: 12px 28px;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(99, 102, 241, .35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(99, 102, 241, .45);
        }
        .btn-outline {
            border-color: rgba(255, 255, 255, .72);
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-2px);
        }
        .btn-ghost {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-2px);
        }
        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(99, 102, 241, .5);
            outline-offset: 3px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .brand {
            font-size: 1.38rem;
            font-weight: 800;
            color: var(--navy);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.01em;
        }
        .brand i {
            color: var(--primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 4px 8px rgba(99, 102, 241, .4));
        }
        .main-nav ul {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .main-nav a {
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-weak);
            padding: 10px 18px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
            background: #eef0ff;
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 6px 16px rgba(99, 102, 241, .35);
        }
        .header-cta {
            margin-left: 8px;
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--navy);
            padding: 8px;
            border-radius: 8px;
        }
        .nav-toggle:hover {
            background: #f1f3fb;
        }

        /* ========== Banner ========== */
        .page-banner {
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 130px 0 120px;
            position: relative;
            color: #fff;
            text-align: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 10, 24, .82), rgba(15, 20, 45, .68));
        }
        .page-banner>.container {
            position: relative;
            z-index: 1;
        }
        .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, .14);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, .22);
            border-radius: 999px;
            padding: 6px 22px;
            font-size: .85rem;
            letter-spacing: .08em;
            margin-bottom: 22px;
        }
        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
            line-height: 1.15;
        }
        .page-banner p {
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 30px;
            color: rgba(255, 255, 255, .86);
        }
        .banner-tags {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .banner-tags span {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: .9rem;
            backdrop-filter: blur(4px);
        }

        /* ========== 数据概览 ========== */
        .stats-section {
            padding: 48px 0 0;
            margin-top: -46px;
            position: relative;
            z-index: 2;
        }
        .stat-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-num {
            display: block;
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--navy);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-weak);
            font-size: .95rem;
            margin-top: 6px;
            display: block;
        }

        /* ========== 板块标题 ========== */
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-eyebrow {
            display: inline-block;
            background: #eef0ff;
            color: var(--primary);
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: .1em;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--navy);
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-weak);
            max-width: 560px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }

        /* ========== 最新资讯 ========== */
        .news-section {
            padding: var(--space) 0;
        }
        .news-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            margin-bottom: 24px;
        }
        .news-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .news-cover {
            position: relative;
            overflow: hidden;
            height: 190px;
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-cover img {
            transform: scale(1.06);
        }
        .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 16, 32, .72);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: .78rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .15);
            z-index: 2;
        }
        .news-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-body h3 {
            font-size: 1.14rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-body p {
            color: var(--text-weak);
            font-size: .92rem;
            flex: 1;
        }
        .news-meta {
            display: flex;
            gap: 16px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: .84rem;
            color: var(--text-weak);
        }
        .news-meta i {
            margin-right: 4px;
        }

        /* ========== 热门专题 ========== */
        .topic-section {
            background: var(--navy);
            padding: var(--space) 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .topic-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -60px;
            width: 440px;
            height: 440px;
            background: radial-gradient(circle, rgba(99, 102, 241, .35), transparent 70%);
            pointer-events: none;
        }
        .topic-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, .15), transparent 70%);
            pointer-events: none;
        }
        .topic-feature {
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            min-height: 360px;
            box-shadow: 0 24px 48px rgba(0, 0, 0, .35);
        }
        .topic-feature img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
        }
        .topic-feature-content {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 32px;
            background: linear-gradient(to top, rgba(5, 8, 20, .92), transparent 72%);
        }
        .badge {
            align-self: flex-start;
            background: var(--accent);
            color: #122;
            font-size: .8rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .topic-feature-content h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .topic-feature-content p {
            color: rgba(255, 255, 255, .82);
            font-size: .95rem;
            margin-bottom: 18px;
            max-width: 380px;
        }
        .topic-list {
            padding-left: 32px;
            position: relative;
            z-index: 2;
        }
        .topic-list>h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .topic-list>h3::after {
            content: '';
            flex: 1;
            height: 1px;
            background: rgba(255, 255, 255, .12);
        }
        .topic-list ul li {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: var(--transition);
            cursor: default;
        }
        .topic-list ul li:hover {
            padding-left: 10px;
            border-bottom-color: rgba(255, 255, 255, .22);
        }
        .rank {
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--primary);
            width: 44px;
            font-style: italic;
            line-height: 1;
        }
        .topic-list ul li h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 2px;
        }
        .topic-list ul li p {
            color: rgba(255, 255, 255, .58);
            font-size: .88rem;
        }
        .topic-list ul li i {
            margin-left: auto;
            color: rgba(255, 255, 255, .38);
            transition: var(--transition);
        }
        .topic-list ul li:hover i {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ========== 深度快报 ========== */
        .report-section {
            padding: var(--space) 0;
            background: var(--white);
        }
        .report-item {
            display: flex;
            gap: 28px;
            align-items: center;
            background: #fafbfe;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 18px;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .report-item:hover {
            box-shadow: var(--shadow);
            border-color: #d8dcf0;
            transform: translateY(-4px);
        }
        .report-cover {
            flex: 0 0 260px;
            border-radius: 12px;
            overflow: hidden;
            height: 150px;
        }
        .report-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .report-content {
            flex: 1;
        }
        .tag-line {
            display: flex;
            gap: 10px;
            align-items: center;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .tag-line span {
            font-size: .8rem;
            font-weight: 600;
            color: var(--primary);
            background: #eef0ff;
            padding: 3px 12px;
            border-radius: 999px;
        }
        .report-content h3 {
            font-size: 1.22rem;
            font-weight: 750;
            margin-bottom: 8px;
        }
        .report-content h3 a:hover {
            color: var(--primary);
        }
        .report-content p {
            color: var(--text-weak);
            font-size: .92rem;
            margin-bottom: 10px;
            line-height: 1.65;
        }
        .report-meta {
            font-size: .84rem;
            color: var(--text-weak);
        }
        .report-meta i {
            margin-right: 4px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--space) 0;
        }
        .faq-item details {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 22px 26px;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .faq-item details:hover {
            border-color: #d8dcf0;
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: .85rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item details p {
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            color: var(--text-weak);
            font-size: .95rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 0 0 var(--space);
        }
        .cta-panel {
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            border-radius: 28px;
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(79, 70, 229, .35);
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .2), transparent 70%);
            top: -120px;
            right: -80px;
        }
        .cta-panel::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 70%);
            bottom: -90px;
            left: -60px;
        }
        .cta-panel h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-panel p {
            font-size: 1.05rem;
            opacity: .92;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .cta-buttons .btn-primary {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 10px 24px rgba(0, 0, 0, .15);
        }
        .cta-buttons .btn-primary:hover {
            background: #f0f0ff;
            transform: translateY(-3px);
        }
        .cta-buttons .btn-ghost:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-3px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--navy);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 0;
        }
        .site-footer>.container {
            padding-bottom: 40px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .brand {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: .92rem;
            line-height: 1.8;
            margin-top: 12px;
            color: rgba(255, 255, 255, .55);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 12px;
            font-size: .92rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, .65);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-col ul li i {
            margin-right: 8px;
            color: rgba(255, 255, 255, .38);
            width: 16px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .4);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .topic-list {
                padding-left: 0;
                margin-top: 36px;
            }
            .report-cover {
                flex: 0 0 220px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space: 56px;
            }
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, .98);
                backdrop-filter: blur(14px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px 20px;
                transform: translateY(-12px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 16px 16px;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 6px;
            }
            .main-nav a {
                display: block;
                padding: 12px 18px;
                border-radius: 12px;
                width: 100%;
            }
            .page-banner {
                padding: 90px 0 80px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .report-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .report-cover {
                flex: auto;
                width: 100%;
                height: 200px;
            }
            .cta-panel {
                padding: 44px 28px;
                border-radius: 20px;
            }
            .cta-panel h2 {
                font-size: 1.7rem;
            }
            .section-head h2 {
                font-size: 1.8rem;
            }
            .topic-feature {
                min-height: 300px;
            }
            .topic-feature img {
                min-height: 300px;
            }
        }
        @media (max-width: 520px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .stat-num {
                font-size: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .news-cover {
                height: 170px;
            }
            .banner-tags span {
                font-size: .82rem;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-dark: #0b0f1a;
            --bg-section: #111827;
            --bg-card: #1a2332;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --white: #ffffff;
            --border-dark: rgba(255, 255, 255, 0.08);
            --border-light: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.18);
            --shadow-primary: 0 8px 24px rgba(99, 102, 241, 0.35);
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --space-section: 80px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--white);
            overflow-x: hidden;
        }

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

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

        ul, ol {
            list-style: none;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
            box-shadow: var(--shadow-primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(99, 102, 241, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 3px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-dark);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.98);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 84px;
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
        }

        .brand i {
            color: var(--accent);
            font-size: 26px;
        }

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

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

        .main-nav a {
            display: block;
            padding: 10px 18px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            font-weight: 500;
            border-radius: 30px;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--white);
            background: rgba(255, 255, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
        }

        .header-cta {
            padding: 10px 24px;
            font-size: 15px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 18px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Banner ===== */
        .category-banner {
            background: linear-gradient(180deg, rgba(11, 15, 26, 0.85), rgba(17, 24, 39, 0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 100px 0 80px;
            position: relative;
            color: var(--text-white);
        }

        .category-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 16px;
        }

        .category-banner .breadcrumb a {
            color: var(--accent);
        }

        .category-banner .breadcrumb a:hover {
            color: var(--accent-dark);
        }

        .category-banner h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            color: var(--white);
            max-width: 680px;
            margin: 0 0 20px;
        }

        .category-banner h1 span {
            color: var(--accent);
        }

        .category-banner .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-height: 1000px;
            max-width: 640px;
            line-height: 1.8;
            margin: 0 0 30px;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 30px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .tag:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .tag i {
            color: var(--accent);
        }

        /* ===== Sections ===== */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: var(--bg-section);
            color: var(--text-white);
        }

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

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }

        .section-header .kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(99, 102, 241, 0.1);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin: 0 0 16px;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .section-alt .section-header p {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
            margin-top: 48px;
        }

        .content-card {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--primary-light);
        }

        .card-media {
            position: relative;
            overflow: hidden;
            padding-top: 62%;
        }

        .card-media img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .content-card:hover .card-media img {
            transform: scale(1.05);
        }

        .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(11, 15, 26, 0.7);
            backdrop-filter: blur(8px);
            color: var(--white);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .card-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .card-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 12px;
            color: var(--text-main);
        }

        .card-body p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0 0 20px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .card-link i {
            transition: var(--transition);
        }

        /* 深色卡片 */
        .card-dark {
            background: var(--bg-card);
            border-color: var(--border-dark);
        }

        .card-dark .card-body h3 {
            color: var(--text-white);
        }

        .card-dark .card-body p {
            color: rgba(255, 255, 255, 0.6);
        }

        .card-dark .card-meta {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Feature / 策略方法论 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-media::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(11,15,26,0.1), rgba(11,15,26,0.55));
            pointer-events: none;
        }

        .feature-content h3 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
        }

        .feature-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin: 0 0 24px;
        }

        .feature-list {
            margin-top: 8px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            padding: 8px 0;
        }

        .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
        }

        /* ===== 分析维度 ===== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .metric-card {
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: var(--transition);
        }

        .metric-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary-light);
            transform: scale(1.05);
        }

        .metric-card .metric-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(99, 102, 241, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        .metric-card .metric-icon i {
            font-size: 28px;
            color: var(--primary-light);
        }

        .metric-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 6px;
        }

        .metric-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 40px auto 0;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: var(--white);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }

        .faq-item details {
            padding: 0;
        }

        .faq-item summary {
            padding: 22px 28px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item summary:hover {
            background: rgba(99, 102, 241, 0.03);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 28px 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            margin-top: 0;
        }

        .faq-answer p {
            margin: 0 0 12px;
        }

        .faq-answer p:last-child {
            margin: 0;
        }

        .section-alt .faq-item {
            background: var(--bg-card);
            border-color: var(--border-dark);
        }

        .section-alt .faq-item summary {
            color: var(--text-white);
        }

        .section-alt .faq-item summary:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.03);
        }

        .section-alt .faq-answer {
            color: rgba(255, 255, 255, 0.6);
            border-top-color: var(--border-dark);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(245, 158, 11, 0.1)), url('/assets/images/backpic/back-3.png') center/cover fixed;
            padding: 110px 0;
            text-align: center;
            position: relative;
            color: var(--text-white);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11, 15, 26, 0.82);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 44px;
            font-weight: 800;
            margin: 0 0 16px;
            letter-spacing: -1px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #060a14;
            color: rgba(255, 255, 255, 0.6);
            padding: 70px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border-dark);
        }

        .footer-brand .brand {
            font-size: 20px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 280px;
            margin: 16px 0 0;
        }

        .footer-col h4 {
            font-size: 15px;
            color: var(--white);
            margin: 0 0 20px;
            font-weight: 600;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li {
            font-size: 14px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-col ul li i {
            color: var(--primary-light);
            margin-right: 8px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            :root {
                --space-section: 64px;
            }

            .feature-grid {
                gap: 32px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                height: 72px;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                border-bottom: 1px solid var(--border-dark);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                padding: 16px 24px 24px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            }

            .main-nav.open {
                display: block;
            }

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: center;
                font-size: 16px;
            }

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .category-banner {
                padding: 60px 0 48px;
            }

            .category-banner h1 {
                font-size: 32px;
            }

            .category-banner .lead {
                font-size: 16px;
            }

            .section {
                padding: 60px 0;
            }

            .section-header h2 {
                font-size: 30px;
            }

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

            .feature-media {
                order: 1;
            }

            .feature-content {
                order: 2;
            }

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

            .cta-section {
                padding: 72px 0;
            }

            .cta-section h2 {
                font-size: 30px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand {
                font-size: 18px;
            }

            .brand i {
                font-size: 20px;
            }

            .category-banner h1 {
                font-size: 26px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 20px 20px;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --bg: #050d19;
            --bg-alt: #081322;
            --surface: #0c1a2e;
            --surface-2: #112239;
            --border: rgba(0, 200, 255, 0.14);
            --border-strong: rgba(0, 200, 255, 0.35);
            --text: #eaf2ff;
            --text-dim: #8ba3c0;
            --text-weak: #5d7694;
            --primary: #00d4ff;
            --primary-strong: #4fe3ff;
            --accent: #8b5cf6;
            --accent-lite: #a78bfa;
            --warn: #ffb547;
            --danger: #ff5c7a;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-sm: 10px;
            --shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
            --shadow-primary: 0 8px 32px rgba(0, 212, 255, 0.16);
            --shadow-hover: 0 22px 56px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.12);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --container-w: 1200px;
            --header-h: 76px;
            --section-space: 92px;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding-left: 26px;
            padding-right: 26px;
        }

        .section {
            padding: var(--section-space) 0;
            position: relative;
        }

        /* ========== 通用板块标题 ========== */
        .section-head {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: 3px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.22);
            padding: 6px 18px;
            border-radius: 60px;
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .section-head .eyebrow i {
            font-size: 12px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: 1px;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--text-dim);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-head h2 em {
            font-style: normal;
            background: linear-gradient(120deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 30px;
            border-radius: 60px;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00a6d4);
            color: #031020;
            box-shadow: var(--shadow-primary);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.3);
            color: #031020;
        }

        .btn-ghost {
            border: 1px solid rgba(0, 212, 255, 0.4);
            color: var(--primary);
            background: rgba(0, 212, 255, 0.05);
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            background: rgba(0, 212, 255, 0.12);
            border-color: var(--primary);
            transform: translateY(-3px);
            color: var(--primary);
        }

        .btn-lg {
            padding: 17px 40px;
            font-size: 16px;
        }

        .btn:active {
            transform: translateY(0) scale(0.98);
        }

        .btn:focus-visible,
        .nav-toggle:focus-visible,
        .faq-q:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(5, 13, 25, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            background: rgba(5, 13, 25, 0.95);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand i {
            font-size: 22px;
            color: var(--primary);
            filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
        }

        .brand:hover {
            color: var(--primary);
        }

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

        .main-nav a {
            display: block;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dim);
            transition: var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text);
            background: rgba(0, 212, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.2);
        }

        .header-cta {
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--surface-2);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 0 100px;
            overflow: hidden;
            background-image:
                linear-gradient(rgba(5, 13, 25, 0.45), rgba(5, 13, 25, 0.92)),
                url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
            background-size: 46px 46px;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, var(--bg));
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.09);
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: 60px;
            padding: 8px 22px;
            margin-bottom: 26px;
            letter-spacing: 2px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 1px;
            margin-bottom: 22px;
        }

        .hero h1 span {
            background: linear-gradient(120deg, var(--primary), 60%, var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 17px;
            color: var(--text-dim);
            line-height: 1.9;
            max-width: 680px;
            margin: 0 auto 38px;
        }

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

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 0;
            margin-top: 60px;
            border-top: 1px solid var(--border);
            padding-top: 34px;
        }

        .hero-stat {
            flex: 0 0 240px;
            text-align: center;
            position: relative;
        }

        .hero-stat+.hero-stat::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 48px;
            background: var(--border);
        }

        .hero-stat .num {
            font-size: 38px;
            font-weight: 900;
            color: var(--text);
            font-variant-numeric: tabular-nums;
            letter-spacing: 2px;
            text-shadow: 0 0 24px rgba(0, 212, 255, 0.4);
        }

        .hero-stat .label {
            margin-top: 6px;
            font-size: 14px;
            color: var(--text-dim);
        }

        /* ========== 观赛方式卡片 ========== */
        .ways-section {
            background: var(--bg);
        }

        .guide-grid {
            margin: 0 -16px;
        }

        .guide-col {
            padding: 0 16px !important;
            margin-bottom: 32px;
        }

        .guide-card {
            position: relative;
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px 30px;
            transition: var(--transition);
            overflow: hidden;
        }

        .guide-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .guide-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-strong);
        }

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

        .guide-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(140deg, rgba(0, 212, 255, 0.16), rgba(139, 92, 246, 0.16));
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 22px;
        }

        .guide-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .guide-card p {
            font-size: 14px;
            line-height: 1.85;
            color: var(--text-dim);
        }

        /* ========== 观赛五步流程 ========== */
        .steps-section {
            background: var(--bg-alt);
            position: relative;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(0, 212, 255, 0.09) 1px, transparent 1px);
            background-size: 28px 28px;
            opacity: 0.35;
            pointer-events: none;
        }

        .steps-track {
            position: relative;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            z-index: 2;
        }

        .steps-track::before {
            content: "";
            position: absolute;
            top: 44px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), var(--accent), var(--primary), transparent);
            opacity: 0.5;
        }

        .step-item {
            position: relative;
            text-align: center;
            padding: 0 10px;
        }

        .step-num {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 88px;
            height: 88px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: var(--bg);
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 26px;
            font-weight: 800;
            box-shadow: 0 0 0 8px rgba(0, 212, 255, 0.05), 0 0 28px rgba(0, 212, 255, 0.16);
            font-variant-numeric: tabular-nums;
        }

        .step-item:nth-child(even) .step-num {
            border-color: var(--accent);
            color: var(--accent-lite);
            box-shadow: 0 0 0 8px rgba(139, 92, 246, 0.06), 0 0 28px rgba(139, 92, 246, 0.18);
        }

        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-dim);
            line-height: 1.8;
        }

        /* ========== 攻略精选卡片 ========== */
        .posts-section {
            background: var(--bg);
        }

        .posts-grid {
            margin: 0 -14px;
        }

        .post-card {
            padding: 0 14px !important;
            margin-bottom: 30px;
        }

        .post-card-inner {
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .post-card-inner:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-strong);
        }

        .post-cover {
            position: relative;
            display: block;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--surface-2);
        }

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

        .post-card-inner:hover .post-cover img {
            transform: scale(1.06);
        }

        .post-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 52%, rgba(5, 13, 25, 0.65));
            pointer-events: none;
        }

        .post-tag {
            position: absolute;
            z-index: 2;
            top: 16px;
            left: 16px;
            background: rgba(0, 212, 255, 0.18);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 40px;
            backdrop-filter: blur(6px);
        }

        .post-body {
            padding: 22px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .post-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text);
            transition: var(--transition);
        }

        .post-card-inner:hover .post-body h3 {
            color: var(--primary);
        }

        .post-body p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 16px;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .post-meta i {
            margin-right: 4px;
            font-size: 12px;
        }

        /* ========== 观赛必备要点 ========== */
        .tips-section {
            background:
                linear-gradient(rgba(5, 13, 25, 0.88), rgba(5, 13, 25, 0.94)),
                url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
        }

        .tips-wrap {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 52px;
            align-items: center;
        }

        .tips-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .tips-visual img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .tips-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, transparent 40%, rgba(0, 212, 255, 0.12));
            pointer-events: none;
        }

        .tips-visual .tips-badge {
            position: absolute;
            left: 18px;
            bottom: 18px;
            z-index: 2;
            background: rgba(5, 13, 25, 0.8);
            border: 1px solid var(--border-strong);
            border-radius: 12px;
            padding: 12px 18px;
            font-size: 13px;
            color: var(--primary);
            backdrop-filter: blur(8px);
        }

        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .tip-item {
            display: flex;
            gap: 18px;
            padding: 22px 22px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }

        .tip-item:hover {
            transform: translateX(6px);
            border-color: var(--border-strong);
            box-shadow: var(--shadow-primary);
        }

        .tip-icon {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(140deg, rgba(0, 212, 255, 0.14), rgba(139, 92, 246, 0.14));
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--primary);
            font-size: 19px;
        }

        .tip-text h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .tip-text p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.75;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-alt);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-item.open {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-primary);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            text-align: left;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }

        .faq-q i {
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.35s ease;
            flex: 0 0 auto;
        }

        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease;
        }

        .faq-item.open .faq-a {
            max-height: 400px;
        }

        .faq-a-inner {
            padding: 0 26px 24px;
            font-size: 14px;
            line-height: 1.9;
            color: var(--text-dim);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            text-align: center;
            background-image:
                linear-gradient(rgba(5, 13, 25, 0.8), rgba(5, 13, 25, 0.92)),
                url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.18), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 18px;
        }

        .cta-inner h2 span {
            background: linear-gradient(120deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--text-dim);
            line-height: 1.9;
            margin-bottom: 36px;
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: #040a14;
            border-top: 1px solid var(--border);
            padding: 72px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(148, 190, 255, 0.08);
        }

        .footer-brand .brand {
            margin-bottom: 20px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.9;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-dim);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .footer-col ul i {
            color: var(--primary);
            font-size: 12px;
            width: 18px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom a {
            color: var(--text-dim);
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ========== 图片遮罩/分隔线装饰 ========== */
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
            max-width: 900px;
            margin: 0 auto;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }

            .steps-track {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }

            .steps-track::before {
                display: none;
            }

            .tips-wrap {
                grid-template-columns: 1fr;
                gap: 36px;
            }

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

            .hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 68px;
                --section-space: 60px;
            }

            .site-header {
                height: 68px;
            }

            .header-inner {
                height: 68px;
            }

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: fixed;
                top: 68px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 68px);
                background: rgba(6, 14, 26, 0.98);
                backdrop-filter: blur(18px);
                border-left: 1px solid var(--border);
                transition: right 0.35s ease;
                padding: 30px 24px;
                z-index: 999;
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }

            .main-nav a {
                text-align: left;
                padding: 14px 20px;
                font-size: 16px;
                border-radius: 12px;
            }

            .main-nav a.active {
                background: rgba(0, 212, 255, 0.1);
                box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.22);
            }

            .hero {
                min-height: 480px;
                padding: 90px 0 70px;
            }

            .hero h1 {
                font-size: 32px;
                line-height: 1.4;
            }

            .hero p {
                font-size: 15px;
                line-height: 1.8;
            }

            .hero-stats {
                flex-direction: column;
                gap: 20px;
                margin-top: 44px;
            }

            .hero-stat+.hero-stat::before {
                display: none;
            }

            .hero-stat {
                flex: 1 1 100%;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .section-head p {
                font-size: 15px;
            }

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

            .step-item {
                display: flex;
                align-items: center;
                gap: 20px;
                text-align: left;
                padding: 0;
            }

            .step-num {
                flex: 0 0 68px;
                width: 68px;
                height: 68px;
                margin: 0;
                font-size: 20px;
            }

            .step-item h4 {
                margin-bottom: 4px;
            }

            .step-item p {
                font-size: 13px;
            }

            .cta-inner h2 {
                font-size: 27px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 36px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        @media (max-width: 520px) {
            .brand {
                font-size: 16px;
            }

            .brand i {
                font-size: 18px;
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero p {
                font-size: 14px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .guide-col {
                padding: 0 10px !important;
            }

            .post-card {
                padding: 0 10px !important;
            }

            .post-body h3 {
                font-size: 16px;
            }

            .tip-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px;
            }

            .tip-icon {
                flex: 0 0 44px;
                width: 44px;
                height: 44px;
                font-size: 17px;
            }

            .faq-q {
                padding: 18px 18px;
                font-size: 14px;
            }

            .faq-a-inner {
                padding: 0 18px 18px;
                font-size: 13px;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .brand {
                white-space: normal;
            }

            .posts-grid,
            .guide-grid {
                margin: 0 -6px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ========== 动画 ========== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-inner {
            animation: fadeUp 0.9s ease both;
        }