/* roulang page: index */
:root {
            --primary: #2563a8;
            --primary-dark: #1a4a7a;
            --primary-light: #e9f0f7;
            --accent: #2ba49a;
            --cta: #e8963a;
            --cta-hover: #d68420;
            --bg: #f6f8fa;
            --card-bg: #ffffff;
            --text: #1f2a37;
            --text-secondary: #6b7a8f;
            --border: #e3e9f0;
            --success: #2f9e5a;
            --footer-bg: #16283d;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 55, 0.06);
            --shadow-md: 0 8px 24px rgba(31, 42, 55, 0.10);
            --shadow-nav: 0 4px 20px rgba(31, 42, 55, 0.08);
            --shadow-btn: 0 4px 14px rgba(37, 99, 168, 0.25);
            --section-pad: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--footer-bg);
            line-height: 1.3;
        }
        .container {
            max-width: 1140px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-pad {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 0 20px;
            pointer-events: none;
        }
        .nav-capsule {
            max-width: 1100px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-nav);
            padding: 10px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            pointer-events: auto;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .nav-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--footer-bg);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 15px;
            flex-shrink: 0;
        }
        .nav-brand .brand-text b {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-brand .brand-text span {
            color: var(--footer-bg);
            font-weight: 600;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-menu .nav-link-custom {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            transition: all .25s ease;
        }
        .nav-menu .nav-link-custom:hover {
            color: var(--primary);
        }
        .nav-menu .nav-link-custom.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-menu .nav-link-custom.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--cta);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 8px 22px;
            transition: all .25s ease;
            box-shadow: 0 3px 10px rgba(232, 150, 58, 0.3);
            border: none;
        }
        .nav-cta:hover {
            background: var(--cta-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 150, 58, 0.4);
        }
        .nav-cta:active {
            transform: translateY(0);
        }
        .hamburger {
            display: none;
            background: var(--primary-light);
            border: none;
            border-radius: 10px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--primary);
            font-size: 18px;
            transition: background .25s ease;
        }
        .hamburger:hover {
            background: #dce6f0;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 20px;
            right: 20px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 12px 40px rgba(31, 42, 55, 0.14);
            padding: 20px;
            z-index: 1049;
            flex-direction: column;
            gap: 8px;
            border: 1px solid var(--border);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            color: var(--text);
            background: var(--bg);
            transition: all .25s ease;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Hero ===== */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f6f8fa 0%, #e8f0f8 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(43, 164, 154, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37, 99, 168, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 12px;
            color: var(--accent);
        }
        .hero h1 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--footer-bg);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 480px;
            line-height: 1.75;
            margin-bottom: 32px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cta);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 14px 32px;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 4px 14px rgba(232, 150, 58, 0.35);
        }
        .btn-primary-custom:hover {
            background: var(--cta-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 150, 58, 0.45);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 14px 32px;
            transition: all .25s ease;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-outline-custom:active {
            transform: scale(0.98);
        }
        .hero-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 12px 32px rgba(31, 42, 55, 0.10);
            aspect-ratio: 4 / 3;
            background: #f0f4f8;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 信任指标 ===== */
        .trust-bar {
            padding-top: 40px;
            padding-bottom: 40px;
            position: relative;
            z-index: 2;
            margin-top: -20px;
        }
        .trust-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            text-align: center;
            transition: all .25s ease;
            border: 1px solid rgba(227, 233, 240, 0.5);
        }
        .trust-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .trust-card .value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .trust-card .label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== 区块标题 ===== */
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap .section-sub {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .section-title-wrap h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--footer-bg);
            margin-bottom: 10px;
        }
        .section-title-wrap p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== 权益对比 ===== */
        .compare-section {
            background: var(--bg);
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }
        .compare-card {
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            transition: all .25s ease;
            position: relative;
        }
        .compare-card.free {
            background: #f3f5f7;
            border: 1px solid var(--border);
        }
        .compare-card.vip {
            background: var(--primary-light);
            border: 2px solid var(--primary);
            box-shadow: 0 8px 28px rgba(37, 99, 168, 0.10);
        }
        .vip-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--cta);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            box-shadow: 0 3px 10px rgba(232, 150, 58, 0.3);
        }
        .compare-card .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--footer-bg);
        }
        .compare-card.vip .card-title {
            color: var(--primary);
        }
        .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 13px 0;
            border-bottom: 1px solid rgba(227, 233, 240, 0.7);
            font-size: 14px;
            color: var(--text-secondary);
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-row .status {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            font-size: 11px;
            flex-shrink: 0;
        }
        .compare-row .status.no {
            background: rgba(107, 122, 143, 0.12);
            color: #9aa8b8;
        }
        .compare-row .status.yes {
            background: rgba(47, 158, 90, 0.12);
            color: var(--success);
        }

        /* ===== 等级亮点 ===== */
        .levels-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: var(--bg);
        }
        .level-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            height: 100%;
            border: 1px solid rgba(227, 233, 240, 0.5);
            transition: all .3s ease;
            position: relative;
        }
        .level-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .level-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 12px 32px rgba(37, 99, 168, 0.12);
        }
        .level-badge {
            position: absolute;
            top: -10px;
            left: 24px;
            background: var(--cta);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 12px;
        }
        .level-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 20px;
        }
        .level-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .level-card .level-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .level-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px 0;
        }
        .level-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 4px 0;
            line-height: 1.6;
        }
        .level-list li i {
            color: var(--success);
            font-size: 12px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .level-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            transition: all .25s ease;
        }
        .level-link:hover {
            color: var(--accent);
            text-decoration: underline;
        }

        /* ===== 专属内容预览 ===== */
        .exclusive-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: #fff;
        }
        .exclusive-list .ex-item {
            display: flex;
            gap: 16px;
            align-items: center;
            padding: 12px;
            border-radius: var(--radius-md);
            transition: background .25s ease;
            cursor: default;
        }
        .exclusive-list .ex-item:hover {
            background: var(--primary-light);
        }
        .ex-thumb {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: #f0f4f8;
        }
        .ex-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ex-body .ex-badge {
            display: inline-block;
            background: rgba(232, 150, 58, 0.15);
            color: var(--cta-hover);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            margin-bottom: 4px;
        }
        .ex-body h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text);
        }
        .ex-body p {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 300px;
        }
        .ex-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 10;
            box-shadow: var(--shadow-md);
            background: #f0f4f8;
        }
        .ex-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ex-cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(22, 40, 61, 0) 40%, rgba(22, 40, 61, 0.7) 100%);
            display: flex;
            align-items: flex-end;
            justify-content: center;
            padding-bottom: 32px;
            opacity: 0;
            transition: opacity .3s ease;
        }
        .ex-cover:hover .ex-cover-overlay {
            opacity: 1;
        }
        .ex-unlock-btn {
            background: #fff;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 28px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            transition: all .25s ease;
        }
        .ex-unlock-btn:hover {
            transform: translateY(-2px);
            color: var(--cta-hover);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: var(--bg);
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all .3s ease;
            border: 1px solid rgba(227, 233, 240, 0.5);
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .news-card .news-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: #f0f4f8;
        }
        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(37, 99, 168, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            z-index: 2;
        }
        .news-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .news-body h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 46px;
        }
        .news-body h3 a {
            color: var(--text);
        }
        .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-body .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex-grow: 1;
        }
        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            font-size: 13px;
        }
        .news-meta .time {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-meta .read-more {
            color: var(--primary);
            font-weight: 500;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: all .25s ease;
        }
        .news-meta .read-more:hover {
            color: var(--accent);
            gap: 6px;
        }
        .empty-state {
            background: #fafbfd;
            border: 2px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
        }
        .btn-more-wrap {
            text-align: center;
            margin-top: 40px;
        }
        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 12px 32px;
            transition: all .25s ease;
            cursor: pointer;
        }
        .btn-more:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: #fff;
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item.open {
            border-color: rgba(37, 99, 168, 0.4);
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color .25s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(135deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-a {
            display: none;
            padding: 0 20px 18px 20px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: linear-gradient(135deg, #e9f0f7 0%, #dce8f4 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: 40px;
            left: 60px;
            width: 80px;
            height: 80px;
            border: 2px solid rgba(37, 99, 168, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: 40px;
            right: 60px;
            width: 120px;
            height: 120px;
            border: 2px solid rgba(43, 164, 154, 0.07);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-card {
            background: rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-lg);
            padding: 60px 32px;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            box-shadow: 0 12px 40px rgba(37, 99, 168, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.8);
        }
        .cta-card h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--footer-bg);
            margin-bottom: 12px;
        }
        .cta-card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--cta);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 16px 44px;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 8px 20px rgba(232, 150, 58, 0.35);
        }
        .btn-cta-lg:hover {
            background: var(--cta-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(232, 150, 58, 0.45);
        }
        .btn-cta-lg:active {
            transform: translateY(0);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: #a9b7c6;
            padding-top: 64px;
            padding-bottom: 24px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-brand {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand b {
            color: #4d9fd6;
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: #a9b7c6;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #a9b7c6;
            font-size: 13px;
            transition: all .25s ease;
            display: inline-block;
            padding-left: 0;
        }
        .footer-links a:hover {
            color: #dce8f4;
            padding-left: 12px;
            border-left: 4px solid var(--primary);
        }
        .footer-contact {
            font-size: 13px;
            line-height: 1.9;
            color: #a9b7c6;
        }
        .footer-contact i {
            width: 20px;
            color: #4d9fd6;
            margin-right: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 48px;
            text-align: center;
            font-size: 12px;
            color: #8a99a9;
        }
        .social-icons {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .social-icons a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #a9b7c6;
            font-size: 14px;
            transition: all .25s ease;
        }
        .social-icons a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 焦点/可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(37, 99, 168, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .nav-menu {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding-top: 120px;
                padding-bottom: 60px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-img-wrap {
                margin-top: 36px;
            }
            .section-pad {
                --section-pad: 56px;
            }
        }
        @media (max-width: 767.98px) {
            .site-nav {
                top: 8px;
                padding: 0 12px;
            }
            .nav-capsule {
                padding: 8px 16px;
            }
            .nav-brand {
                font-size: 16px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-btns {
                flex-direction: column;
                gap: 12px;
                width: 100%;
            }
            .hero-btns .btn-primary-custom,
            .hero-btns .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .compare-card {
                margin-bottom: 20px;
            }
            .cta-card {
                padding: 40px 20px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .btn-cta-lg {
                width: 100%;
                justify-content: center;
            }
            .trust-card .value {
                font-size: 24px;
            }
            .section-title-wrap h2 {
                font-size: 22px;
            }
            .footer-bottom {
                font-size: 11px;
            }
        }
        @media (max-width: 575.98px) {
            .news-card {
                box-shadow: var(--shadow-sm);
            }
            .news-card:active {
                box-shadow: var(--shadow-md);
            }
            .level-card {
                margin-bottom: 20px;
            }
            .ex-cover-overlay {
                opacity: 1;
                background: linear-gradient(180deg, rgba(22, 40, 61, 0) 30%, rgba(22, 40, 61, 0.6) 100%);
            }
        }

/* roulang page: article */
:root{
  --brand:#2563A8;
  --brand-dark:#1A4A7A;
  --brand-light:#E9F0F7;
  --teal:#2BA49A;
  --accent:#E8963A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --text:#1F2A37;
  --text-soft:#6B7A8F;
  --border:#E3E9F0;
  --success:#2F9E5A;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(31,42,55,0.06);
  --shadow-md:0 8px 24px rgba(31,42,55,0.10);
  --shadow-nav:0 4px 20px rgba(31,42,55,0.08);
  --section-pad:80px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  padding-top:108px;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--teal);}
ul,ol{list-style:none;}
button{font-family:inherit;}
.container{max-width:1140px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ===== 导航 ===== */
.site-header{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  z-index:1000;
  width:calc(100% - 32px);
  max-width:1140px;
}
@media (max-width:991px){
  .site-header{top:8px;width:calc(100% - 20px);}
  body{padding-top:90px;}
}
.nav-capsule{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  background:rgba(255,255,255,0.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-nav);
  padding:10px 24px;
  border:1px solid rgba(255,255,255,0.6);
}
.brand{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand b{color:var(--brand);font-weight:700;}
.brand:hover{color:var(--text);}
.nav-menu{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
}
.nav-link-custom{
  display:inline-block;
  padding:8px 18px;
  font-size:14px;
  font-weight:500;
  color:var(--text-soft);
  border-radius:var(--radius-pill);
  transition:all .25s ease;
  position:relative;
}
.nav-link-custom:hover{
  color:var(--brand);
  background:var(--brand-light);
}
.nav-link-custom.active{
  color:var(--brand);
  font-weight:600;
  background:var(--brand-light);
}
.btn-nav{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 26px;
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:600;
  border-radius:var(--radius-pill);
  box-shadow:0 4px 14px rgba(232,150,58,.28);
  transition:all .25s ease;
  white-space:nowrap;
  border:none;
}
.btn-nav:hover{
  background:#D68420;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(232,150,58,.32);
}
.btn-nav:active{transform:translateY(0);}
.btn-nav:focus{outline:3px solid rgba(232,150,58,.35);outline-offset:2px;}
.nav-toggle{
  display:none;
  background:transparent;
  border:none;
  font-size:22px;
  color:var(--brand);
  width:42px;
  height:42px;
  border-radius:50%;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle:focus{outline:3px solid rgba(37,99,168,.3);}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .nav-center{
    position:absolute;
    top:calc(100% + 8px);
    left:0;
    right:0;
    background:#fff;
    border-radius:16px;
    box-shadow:var(--shadow-md);
    padding:16px;
    display:none;
    border:1px solid var(--border);
  }
  .nav-center.show{display:block;}
  .nav-menu{
    flex-direction:column;
    align-items:stretch;
    gap:6px;
  }
  .nav-link-custom{
    display:block;
    padding:12px 20px;
    border-radius:10px;
  }
  .btn-nav{display:none;}
}

/* ===== 面包屑 ===== */
.breadcrumb-custom{
  font-size:13px;
  color:var(--text-soft);
  padding:12px 0 20px;
}
.breadcrumb-custom a{color:var(--brand);}
.breadcrumb-custom a:hover{color:var(--teal);}
.breadcrumb-custom .sep{margin:0 8px;color:#B4BFCC;}
.breadcrumb-custom .current{color:var(--text);font-weight:500;}

/* ===== 文章主体 ===== */
.article-section{
  padding:20px 0 40px;
}
.article-header{
  background:var(--card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:44px 48px 32px;
  margin-bottom:32px;
  border:1px solid var(--border);
}
.article-header h1{
  font-size:30px;
  font-weight:700;
  color:#16283D;
  line-height:1.4;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  font-size:14px;
  color:var(--text-soft);
}
.article-meta .badge-cat{
  display:inline-flex;
  align-items:center;
  background:var(--brand-light);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  padding:4px 14px;
  border-radius:var(--radius-pill);
}
.article-meta .meta-item i{margin-right:5px;color:var(--brand);}
@media (max-width:767px){
  .article-header{padding:30px 22px 20px;}
  .article-header h1{font-size:24px;}
  .article-meta{gap:10px;font-size:13px;}
}

.article-body{
  background:var(--card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:48px 56px;
  max-width:860px;
  margin:0 auto 32px;
  border:1px solid var(--border);
}
@media (max-width:767px){
  .article-body{padding:28px 22px;}
}
.article-body p{
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  margin-bottom:16px;
}
.article-body h2{
  font-size:22px;
  font-weight:700;
  color:#16283D;
  margin:40px 0 16px;
  line-height:1.4;
}
.article-body h3{
  font-size:18px;
  font-weight:600;
  color:#16283D;
  margin:24px 0 12px;
}
.article-body blockquote{
  border-left:4px solid var(--brand);
  background:#F3F7FC;
  padding:16px 20px;
  border-radius:8px;
  color:var(--text-soft);
  margin:20px 0;
}
.article-body img{
  border-radius:12px;
  margin:20px 0;
  box-shadow:var(--shadow-sm);
}
.article-body ul,
.article-body ol{
  margin:0 0 16px 22px;
}
.article-body ul li{
  list-style:disc;
  margin-bottom:6px;
}
.article-body ol li{
  list-style:decimal;
  margin-bottom:6px;
}
.article-body code{
  background:#16283D;
  color:#DCE8F4;
  padding:3px 8px;
  border-radius:6px;
  font-size:14px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:20px 0;
  border-radius:8px;
  overflow:hidden;
}
.article-body table th,
.article-body table td{
  border:1px solid var(--border);
  padding:12px 14px;
  font-size:14px;
}
.article-body table th{
  background:var(--brand-light);
  color:var(--brand-dark);
  font-weight:600;
}

/* ===== 标签区 ===== */
.tag-wrap{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--border);
}
.tag-item{
  display:inline-flex;
  align-items:center;
  background:var(--brand-light);
  color:var(--brand);
  font-size:13px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  transition:all .25s ease;
}
.tag-item:hover{
  background:var(--brand);
  color:#fff;
}

/* ===== 上一篇 / 下一篇 ===== */
.post-pager{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:28px;
}
@media (max-width:767px){
  .post-pager{grid-template-columns:1fr;}
}
.post-pager a{
  display:block;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:20px 24px;
  transition:all .25s ease;
  font-size:14px;
  color:var(--text-soft);
}
.post-pager a b{
  display:block;
  font-size:16px;
  color:var(--text);
  margin-top:6px;
  font-weight:600;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.post-pager a:hover{
  border-color:var(--brand);
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
  color:var(--brand-dark);
}
.post-pager a:hover b{color:var(--brand);}

/* ===== 内容未找到 ===== */
.not-found{
  text-align:center;
  padding:80px 20px;
  background:var(--card);
  border-radius:var(--radius-lg);
  border:1px dashed #D0D9E2;
  box-shadow:var(--shadow-sm);
  max-width:760px;
  margin:0 auto 32px;
}
.not-found h2{
  font-size:28px;
  color:#16283D;
  margin-bottom:12px;
}
.not-found p{color:var(--text-soft);margin-bottom:16px;}
.not-found .btn-back{
  display:inline-flex;
  padding:12px 32px;
  background:var(--brand);
  color:#fff;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  transition:all .25s ease;
}
.not-found .btn-back:hover{
  background:var(--brand-dark);
  color:#fff;
  transform:translateY(-2px);
}

/* ===== 相关推荐 ===== */
.related-section{
  padding:40px 0 60px;
}
.section-head{
  text-align:center;
  margin-bottom:36px;
}
.section-head .overline{
  font-size:13px;
  font-weight:600;
  color:var(--teal);
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:6px;
}
.section-head h2{
  font-size:26px;
  font-weight:700;
  color:#16283D;
  letter-spacing:-.5px;
}
.section-head p{color:var(--text-soft);font-size:14px;}
.related-card{
  background:var(--card);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  border:1px solid var(--border);
  transition:all .3s ease;
  height:100%;
}
.related-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-4px);
  border-color:var(--brand);
}
.related-card .card-img{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
}
.related-card .card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.related-card:hover .card-img img{transform:scale(1.05);}
.related-card .card-body{
  padding:20px;
}
.related-card .card-body h3{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .card-body p{
  font-size:13px;
  color:var(--text-soft);
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .card-foot{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 20px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-soft);
}
.related-card .card-foot a{
  font-size:13px;
  color:var(--brand);
  font-weight:500;
}
.related-card .card-foot a:hover{color:var(--teal);text-decoration:underline;}

/* ===== CTA 横条 ===== */
.article-cta{
  background:var(--brand-light);
  border-radius:var(--radius-md);
  padding:28px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  max-width:860px;
  margin:0 auto 60px;
  border:1px solid rgba(37,99,168,.15);
}
.article-cta .cta-text{
  font-size:16px;
  font-weight:600;
  color:var(--brand-dark);
}
.article-cta .cta-text small{
  display:block;
  font-size:13px;
  font-weight:400;
  color:var(--text-soft);
  margin-top:2px;
}
.article-cta .btn-cta{
  display:inline-flex;
  align-items:center;
  padding:12px 30px;
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:600;
  border-radius:var(--radius-pill);
  box-shadow:0 4px 14px rgba(232,150,58,.28);
  transition:all .25s ease;
  border:none;
  min-height:40px;
}
.article-cta .btn-cta:hover{
  background:#D68420;
  color:#fff;
  transform:translateY(-2px);
}
@media (max-width:767px){
  .article-cta{padding:22px 20px;flex-direction:column;align-items:flex-start;}
}

/* ===== FAQ ===== */
.faq-section{
  padding:60px 0 40px;
}
.faq-list{
  max-width:800px;
  margin:0 auto;
}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.faq-item:has(.show){
  border-color:rgba(37,99,168,.4);
  box-shadow:var(--shadow-sm);
}
.faq-q{
  padding:16px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  background:transparent;
  border:none;
  width:100%;
  text-align:left;
  transition:color .2s;
}
.faq-q:hover{color:var(--brand);}
.faq-q .faq-icon{
  width:20px;
  height:20px;
  position:relative;
  flex-shrink:0;
}
.faq-q .faq-icon::before,
.faq-q .faq-icon::after{
  content:'';
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:all .3s ease;
}
.faq-q .faq-icon::before{width:14px;height:2px;top:9px;left:3px;}
.faq-q .faq-icon::after{width:2px;height:14px;top:3px;left:9px;}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);}
.faq-a{
  padding:0 20px 18px;
  font-size:14px;
  color:var(--text-soft);
  line-height:1.7;
}

/* ===== 页脚 ===== */
.site-footer{
  background:#16283D;
  color:#A9B7C6;
  padding:64px 0 0;
  margin-top:60px;
}
.footer-brand{
  font-size:20px;
  font-weight:600;
  color:#fff;
}
.footer-brand b{color:#6FA6D6;}
.footer-desc{
  font-size:14px;
  color:#A9B7C6;
  line-height:1.7;
  margin-top:14px;
}
.social-icons{
  display:flex;
  gap:12px;
  margin-top:18px;
}
.social-icons a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:50%;
  background:rgba(255,255,255,0.08);
  color:#A9B7C6;
  font-size:15px;
  transition:all .25s ease;
}
.social-icons a:hover{
  background:var(--brand);
  color:#fff;
  transform:translateY(-2px);
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:8px;}
.footer-links a{
  position:relative;
  color:#A9B7C6;
  font-size:14px;
  display:inline-block;
  padding-left:0;
  transition:all .25s ease;
}
.footer-links a:hover{
  color:#fff;
  padding-left:12px;
}
.footer-links a:hover::before{
  content:'';
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--accent);
}
.footer-contact p{
  font-size:14px;
  color:#A9B7C6;
  margin-bottom:10px;
}
.footer-contact i{
  color:var(--brand);
  width:20px;
  margin-right:6px;
  color:#6FA6D6;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  margin-top:40px;
  padding:22px 0;
  text-align:center;
  font-size:13px;
  color:#8A99A9;
}
.footer-bottom p{margin:0;}
.footer-bottom a{color:#8A99A9;}
.footer-bottom a:hover{color:#fff;}

/* ===== 通用按钮 ===== */
.btn-primary-custom{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 36px;
  background:var(--accent);
  color:#fff;
  font-size:16px;
  font-weight:600;
  border-radius:var(--radius-pill);
  box-shadow:0 4px 14px rgba(232,150,58,.28);
  transition:all .25s ease;
  border:none;
  min-height:44px;
}
.btn-primary-custom:hover{
  background:#D68420;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(232,150,58,.32);
}
.btn-primary-custom:focus{outline:3px solid rgba(232,150,58,.4);outline-offset:2px;}
.btn-outline-custom{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 36px;
  background:transparent;
  color:var(--brand);
  font-size:16px;
  font-weight:600;
  border-radius:var(--radius-pill);
  border:1.5px solid var(--brand);
  transition:all .25s ease;
  min-height:44px;
}
.btn-outline-custom:hover{
  background:var(--brand-light);
  color:var(--brand-dark);
  border-color:var(--brand-dark);
}
.btn-outline-custom:focus{outline:3px solid rgba(37,99,168,.3);outline-offset:2px;}

/* ===== 响应式 ===== */
@media (max-width:767px){
  :root{--section-pad:48px;}
  body{font-size:15px;}
  .section-head h2{font-size:22px;}
  .related-card .card-body{padding:16px;}
  .footer-bottom{font-size:12px;}
}
@media (max-width:575px){
  .nav-capsule{padding:8px 16px;}
  .brand{font-size:15px;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #2563A8;
  --primary-dark: #1A4A7A;
  --primary-light: #E9F0F7;
  --accent: #2BA49A;
  --cta: #E8963A;
  --cta-dark: #D68420;
  --bg: #F6F8FA;
  --card-bg: #FFFFFF;
  --text: #1F2A37;
  --text-secondary: #6B7A8F;
  --border: #E3E9F0;
  --success: #2F9E5A;
  --footer-bg: #16283D;
  --footer-text: #A9B7C6;
  --section-pad: 80px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 8px rgba(31,42,55,0.06);
  --shadow-hover: 0 8px 24px rgba(31,42,55,0.10);
  --shadow-nav: 0 4px 20px rgba(31,42,55,0.08);
  --shadow-btn: 0 4px 14px rgba(37,99,168,0.25);
  --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--primary); transition: color .25s ease; }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.container { max-width: 1140px; padding-left: 24px; padding-right: 24px; }

/* ===== 区块间距 ===== */
.section-block { padding: var(--section-pad) 0; }
.section-title {
  font-size: 26px;
  font-weight: 700;
  color: #16283D;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 640px;
}
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ===== 悬浮胶囊导航 ===== */
.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 1050;
  padding: 0 20px;
}
.site-navbar {
  max-width: 1140px;
  margin: 0 auto;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  padding: 10px 28px;
  box-shadow: var(--shadow-nav);
  border: 1px solid rgba(255,255,255,0.6);
}
.site-logo {
  font-size: 18px;
  font-weight: 600;
  color: #16283D;
  letter-spacing: -0.2px;
  white-space: nowrap;
}
.site-logo b {
  color: var(--primary);
  font-weight: 700;
}
.site-logo:hover { color: #16283D; }
.nav-menu { gap: 4px; }
.nav-link-custom {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 18px !important;
  border-radius: var(--radius-pill);
  position: relative;
  transition: all .25s ease;
}
.nav-link-custom:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-link-custom.active {
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-light);
}
.nav-link-custom.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.nav-cta {
  background: var(--cta);
  color: #fff !important;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 24px;
  border-radius: var(--radius-pill);
  border: none;
  transition: all .25s ease;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(232,150,58,0.3);
}
.nav-cta:hover {
  background: var(--cta-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(214,132,32,0.35);
}
.navbar-toggler.custom-toggler {
  border: none;
  padding: 6px 10px;
  border-radius: 8px;
  background: transparent;
}
.navbar-toggler.custom-toggler:focus {
  box-shadow: 0 0 0 3px rgba(37,99,168,0.2);
}
.navbar-toggler.custom-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%232563A8' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* ===== 分类 Hero 区 ===== */
.category-hero {
  padding: 140px 0 50px;
  background: linear-gradient(180deg, #F6F8FA 0%, #E8F0F8 100%);
  position: relative;
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,168,0.06) 0%, transparent 70%);
}
.category-hero::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,164,154,0.05) 0%, transparent 70%);
}
.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.breadcrumb-custom a {
  color: var(--text-secondary);
}
.breadcrumb-custom a:hover { color: var(--primary); }
.breadcrumb-custom .separator { color: #C3CED9; }
.breadcrumb-custom .current { color: var(--text); font-weight: 500; }
.category-hero h1 {
  font-size: 34px;
  font-weight: 700;
  color: #16283D;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  line-height: 1.3;
}
.category-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 760px;
  margin-bottom: 0;
}
.hero-divider {
  margin-top: 32px;
  display: flex;
  align-items: center;
}
.hero-divider .line {
  width: 60px;
  height: 4px;
  border-radius: 4px;
  background: var(--primary);
}

/* ===== 图文混排 ===== */
.intro-section {
  padding: 70px 0;
  background: #fff;
}
.intro-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  height: 100%;
  transition: box-shadow .3s ease;
}
.intro-card:hover { box-shadow: var(--shadow-hover); }
.intro-content { padding: 40px; }
.intro-content .section-title { font-size: 26px; margin-bottom: 18px; }
.intro-content p {
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.intro-content .intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.intro-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-weight: 500;
}
.intro-tag i { font-size: 12px; }
.intro-image-wrap { position: relative; height: 100%; min-height: 320px; }
.intro-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* ===== 四步流程 ===== */
.steps-section {
  padding: var(--section-pad) 0;
  background: var(--bg);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 10px;
}
.step-item {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all .3s ease;
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.step-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 22px;
}
.step-num {
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 40px;
  font-weight: 800;
  color: rgba(37,99,168,0.08);
  line-height: 1;
}
.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #16283D;
  margin-bottom: 10px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 入口方式 ===== */
.access-section {
  padding: var(--section-pad) 0;
  background: #fff;
}
.access-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  height: 100%;
  transition: all .3s ease;
}
.access-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(37,99,168,0.3);
  transform: translateY(-4px);
}
.access-card.featured {
  border: 2px solid var(--primary);
  background: var(--primary-light);
  position: relative;
}
.access-card .badge-warm {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--cta);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
}
.access-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 20px;
}
.access-card.featured .access-icon { background: #fff; }
.access-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: #16283D;
  margin-bottom: 12px;
}
.access-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 0;
}
.access-list {
  margin-top: 22px;
}
.access-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  padding: 6px 0;
  line-height: 1.6;
}
.access-list li i {
  color: var(--success);
  font-size: 13px;
  margin-top: 4px;
}

/* ===== 信任指标条 ===== */
.stats-bar {
  padding: 50px 0;
  background: #fff;
}
.stats-inner {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px 32px;
  border: 1px solid var(--border);
}
.stat-item {
  text-align: center;
  padding: 10px 16px;
}
.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: #16283D;
  letter-spacing: -1px;
  line-height: 1.2;
}
.stat-num span { color: var(--primary); }
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--section-pad) 0;
  background: var(--bg);
}
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item:hover { border-color: rgba(37,99,168,0.3); }
.faq-item.active {
  border-color: rgba(37,99,168,0.4);
  box-shadow: var(--shadow-card);
}
.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color .25s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all .3s ease;
}
.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.faq-question .faq-icon::before {
  width: 12px;
  height: 2px;
}
.faq-question .faq-icon::after {
  width: 2px;
  height: 12px;
}
.faq-item.active .faq-icon { transform: rotate(90deg); }
.faq-item.active .faq-icon::after { height: 0; }
.faq-answer {
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA 区 ===== */
.cta-section {
  padding: var(--section-pad) 0;
  background: linear-gradient(135deg, #E9F0F7 0%, #DCE8F4 100%);
  position: relative;
  overflow: hidden;
}
.cta-wrapper {
  background: rgba(255,255,255,0.9);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--shadow-card);
}
.cta-wrapper::before,
.cta-wrapper::after {
  content: "";
  position: absolute;
  border: 2px solid rgba(37,99,168,0.1);
  border-radius: 50%;
  pointer-events: none;
}
.cta-wrapper::before {
  width: 160px;
  height: 160px;
  top: -40px;
  left: -40px;
}
.cta-wrapper::after {
  width: 220px;
  height: 220px;
  bottom: -60px;
  right: -60px;
}
.cta-wrapper h2 {
  font-size: 26px;
  font-weight: 700;
  color: #16283D;
  margin-bottom: 14px;
}
.cta-wrapper p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.btn-warm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--cta);
  color: #fff !important;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 40px;
  border-radius: var(--radius-pill);
  border: none;
  transition: all .25s ease;
  box-shadow: 0 4px 14px rgba(232,150,58,0.3);
  text-decoration: none;
  min-height: 44px;
}
.btn-warm:hover {
  background: var(--cta-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(214,132,32,0.4);
  color: #fff;
}
.btn-warm:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(214,132,32,0.3);
}
.btn-warm:focus-visible {
  outline: 3px solid rgba(37,99,168,0.35);
  outline-offset: 2px;
}
.btn-outline-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  padding: 11px 28px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--primary);
  transition: all .25s ease;
  text-decoration: none;
  min-height: 44px;
}
.btn-outline-primary:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.btn-outline-primary:focus-visible {
  outline: 3px solid rgba(37,99,168,0.35);
  outline-offset: 2px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  padding: 64px 0 0;
  color: var(--footer-text);
}
.site-footer .container { padding-bottom: 0; }
.footer-brand {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  display: block;
  margin-bottom: 16px;
}
.footer-brand b {
  color: var(--primary);
  font-weight: 700;
}
.footer-desc {
  font-size: 14px;
  color: var(--footer-text);
  line-height: 1.75;
  margin-bottom: 20px;
}
.social-icons {
  display: flex;
  gap: 10px;
}
.social-icons a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--footer-text);
  font-size: 15px;
  transition: all .25s ease;
}
.social-icons a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.site-footer h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--footer-text);
  padding: 4px 0 4px 0;
  position: relative;
  transition: all .25s ease;
}
.footer-links a::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 16px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0;
  transition: all .25s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 14px;
}
.footer-links a:hover::before {
  width: 4px;
  opacity: 1;
  left: 0;
}
.footer-contact p {
  font-size: 14px;
  color: var(--footer-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact p i {
  width: 20px;
  color: var(--primary);
  text-align: center;
}
.footer-bottom {
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--footer-text);
  margin-bottom: 0;
}
.footer-bottom a {
  color: #8A99A9;
}
.footer-bottom a:hover { color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .site-header { top: 8px; padding: 0 12px; }
  .site-navbar {
    border-radius: 20px;
    padding: 12px 20px;
  }
  .navbar-collapse {
    background: #fff;
    border-radius: 14px;
    padding: 16px;
    margin-top: 12px;
    box-shadow: var(--shadow-nav);
  }
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
  }
  .nav-link-custom {
    padding: 12px 16px !important;
    border-radius: 10px;
  }
  .nav-link-custom.active::after { display: none; }
  .nav-cta {
    margin-top: 10px;
    width: 100%;
    text-align: center;
  }
  .category-hero { padding: 120px 0 40px; }
  .category-hero h1 { font-size: 28px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-image-wrap { border-radius: 0 0 var(--radius-lg) var(--radius-lg); min-height: 240px; }
  .intro-image-wrap img { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
  .site-footer .row > div { margin-bottom: 24px; }
}

@media (max-width: 767px) {
  :root { --section-pad: 48px; }
  .section-title { font-size: 22px; }
  .category-hero h1 { font-size: 26px; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .access-card { padding: 28px 22px; }
  .stats-inner { padding: 30px 20px; }
  .stat-num { font-size: 26px; }
  .cta-wrapper { padding: 40px 24px; }
  .cta-wrapper h2 { font-size: 22px; }
  .btn-warm { width: 100%; }
  .intro-content { padding: 28px 22px; }
  .faq-question { padding: 16px 18px; font-size: 15px; }
  .faq-answer { padding: 0 18px 16px; }
  .stats-inner .row [class*="col-"] {
    padding-bottom: 12px;
  }
  .stats-inner .row [class*="col-"]:last-child { padding-bottom: 0; }
  .footer-bottom { margin-top: 32px; }
  .site-logo { font-size: 16px; }
}

@media (max-width: 575px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .category-hero { padding: 110px 0 32px; }
  .category-hero h1 { font-size: 24px; }
  .category-desc { font-size: 14px; }
  .steps-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 22px; }
  .section-block { padding: 40px 0; }
  .nav-cta { font-size: 13px; padding: 10px 18px; }
  .btn-warm { font-size: 15px; padding: 13px 32px; }
  .intro-tags { flex-wrap: wrap; }
}