/* roulang page: index */
:root {
            --primary: #16335a;
            --primary-dark: #0f2440;
            --primary-light: #2a5686;
            --accent: #d4a548;
            --accent-dark: #b8892e;
            --accent-light: #f3d798;
            --bg: #f4f6f9;
            --bg-white: #ffffff;
            --bg-dark: #0f2440;
            --bg-soft: #edf1f6;
            --text: #1e2a38;
            --text-muted: #5c6b7a;
            --text-light: #a7b3c2;
            --border: #e3e8ef;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(16, 36, 64, 0.06);
            --shadow-md: 0 8px 28px rgba(16, 36, 64, 0.09);
            --shadow-lg: 0 18px 50px rgba(16, 36, 64, 0.14);
            --shadow-accent: 0 8px 26px rgba(212, 165, 72, 0.35);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover {
            color: var(--accent-dark);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .text-center {
            text-align: center;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(212, 165, 72, 0.1);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary-dark);
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0;
        }

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: 50px;
            transition: var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 34px rgba(184, 137, 46, 0.4);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .btn-light:hover {
            background: var(--bg-soft);
            color: var(--primary);
            transform: translateY(-2px);
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--bg-soft);
            color: var(--primary);
            letter-spacing: 0.3px;
        }

        .badge-accent {
            background: rgba(212, 165, 72, 0.14);
            color: var(--accent-dark);
        }

        .badge-green {
            background: rgba(34, 160, 112, 0.12);
            color: #1d9e70;
        }

        .card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(212, 165, 72, 0.4);
        }

        .grid-gap {
            gap: 32px 24px;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(227, 232, 239, 0.8);
            box-shadow: 0 2px 20px rgba(16, 36, 64, 0.05);
        }

        .site-header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 78px;
            gap: 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .site-logo__mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(22, 51, 90, 0.3);
        }

        .site-logo__text {
            font-size: 19px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.3px;
            line-height: 1.2;
        }

        .site-logo__sub {
            display: block;
            font-size: 11px;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 1.5px;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .site-nav__list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 2px;
        }

        .site-nav__item {
            position: relative;
            margin: 0;
        }

        .site-nav__link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 50px;
            transition: var(--transition);
        }

        .site-nav__link i {
            font-size: 12px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .site-nav__link:hover {
            color: var(--primary);
            background: var(--bg-soft);
        }

        .site-nav__item.active>.site-nav__link {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(22, 51, 90, 0.3);
        }

        .site-nav__item.active>.site-nav__link i {
            color: rgba(255, 255, 255, 0.7);
        }

        .site-nav__item:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            pointer-events: auto;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 14px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            width: 420px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: var(--transition);
            z-index: 100;
        }

        .mega-panel::before {
            content: "";
            position: absolute;
            top: -12px;
            left: 0;
            right: 0;
            height: 16px;
            background: transparent;
        }

        .mega-panel__grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .mega-item {
            display: block;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .mega-item:hover {
            background: var(--bg-white);
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .mega-item__icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            margin-bottom: 10px;
        }

        .mega-item__title {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 4px;
        }

        .mega-item__desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .header-cta {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            padding: 10px 24px;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(212, 165, 72, 0.3);
        }

        .header-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--bg-soft);
            color: var(--primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--border);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.93), rgba(22, 51, 90, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 110px 0 100px;
            overflow: hidden;
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(212, 165, 72, 0.15);
            filter: blur(60px);
        }

        .hero__grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .hero__content {
            position: relative;
            z-index: 2;
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 26px;
            backdrop-filter: blur(8px);
        }

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

        .hero__title {
            font-size: clamp(34px, 5vw, 54px);
            font-weight: 800;
            line-height: 1.18;
            margin: 0 0 22px;
            letter-spacing: -1px;
        }

        .hero__title span {
            color: var(--accent);
        }

        .hero__desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 540px;
            margin-bottom: 34px;
        }

        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 42px;
        }

        .hero__stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            padding-top: 28px;
        }

        .hero__stat-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero__stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        .hero__visual {
            position: relative;
            z-index: 2;
        }

        .hero__card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 34px;
            backdrop-filter: blur(12px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
        }

        .hero__card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .hero__list {
            list-style: none;
            margin: 0 0 22px;
            padding: 0;
            display: grid;
            gap: 14px;
        }

        .hero__list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            line-height: 1.5;
            color: rgba(255, 255, 255, 0.85);
        }

        .hero__list li i {
            color: var(--accent);
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== 核心价值 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }

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

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }

        .feature-card__icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 8px 24px rgba(22, 51, 90, 0.22);
        }

        .feature-card__title {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

        .feature-card__desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--border);
            transition: var(--transition);
            background: var(--bg-dark);
        }

        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }

        .category-card__bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            opacity: 0.75;
        }

        .category-card:hover .category-card__bg {
            transform: scale(1.05);
        }

        .category-card__overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 36, 64, 0.1) 0%, rgba(15, 36, 64, 0.88) 82%);
        }

        .category-card__content {
            position: relative;
            z-index: 2;
            padding: 30px;
            width: 100%;
        }

        .category-card__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(212, 165, 72, 0.18);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
            backdrop-filter: blur(4px);
        }

        .category-card__title {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .category-card__desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
            line-height: 1.6;
        }

        .category-card__link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
        }

        .category-card__link:hover {
            color: var(--accent-light);
        }

        /* ===== 最新资讯 ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 36px;
        }

        .news-list-wrap {
            display: grid;
            gap: 20px;
        }

        .news-card {
            display: flex;
            flex-direction: column;
            gap: 14px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(212, 165, 72, 0.4);
        }

        .news-card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .news-card__date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-card__title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--primary-dark);
            margin: 0;
        }

        .news-card__title a {
            color: inherit;
        }

        .news-card__title a:hover {
            color: var(--accent-dark);
        }

        .news-card__desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .news-card__more:hover {
            color: var(--accent-dark);
            gap: 10px;
        }

        .news-sidebar {
            display: grid;
            gap: 20px;
            align-content: start;
        }

        .side-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
        }

        .side-card__title {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .side-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .side-list li {
            font-size: 14px;
        }

        .side-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            transition: var(--transition);
        }

        .side-list a:hover {
            color: var(--primary);
            background: var(--bg-soft);
            padding-left: 16px;
        }

        .side-list a i {
            color: var(--accent);
            font-size: 12px;
        }

        .side-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 16px;
        }

        .side-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item__num {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item__label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 34px 26px;
            position: relative;
            transition: var(--transition);
            text-align: center;
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }

        .step-card__num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 20px rgba(22, 51, 90, 0.25);
        }

        .step-card__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .step-card__desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== 图文内容区 ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }

        .content-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }

        .content-card__img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .content-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .content-card:hover .content-card__img img {
            transform: scale(1.06);
        }

        .content-card__img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 36, 64, 0.4));
        }

        .content-card__body {
            padding: 26px;
        }

        .content-card__body .badge {
            margin-bottom: 12px;
        }

        .content-card__title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }

        .content-card__desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .content-card__link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(212, 165, 72, 0.4);
            box-shadow: var(--shadow-sm);
        }

        .faq-item__q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-dark);
            cursor: pointer;
            user-select: none;
        }

        .faq-item__q i {
            color: var(--accent);
            font-size: 16px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item.open .faq-item__q i {
            transform: rotate(45deg);
        }

        .faq-item__a {
            padding: 0 26px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.open .faq-item__a {
            padding: 0 26px 22px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.95), rgba(22, 51, 90, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(212, 165, 72, 0.12);
            filter: blur(50px);
            top: -80px;
            right: -60px;
        }

        .cta-section__title {
            font-size: clamp(28px, 3.4vw, 40px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section__desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand__text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand__desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
            margin-bottom: 20px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-links a i {
            font-size: 10px;
            color: var(--accent);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer__copyright {
            padding-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 暂无数据 ===== */
        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 15px;
        }

        .empty-tip i {
            font-size: 32px;
            color: var(--text-light);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .site-header__inner {
                min-height: 70px;
            }

            .hero__grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero__visual {
                max-width: 560px;
            }

            .news-layout {
                grid-template-columns: 1fr;
            }

            .news-sidebar {
                grid-template-columns: 1fr 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .site-header__inner {
                flex-wrap: wrap;
                min-height: 0;
                padding: 14px 0;
            }

            .mobile-toggle {
                display: flex;
                order: 2;
            }

            .site-logo {
                margin-right: auto;
            }

            .site-nav {
                display: none;
                width: 100%;
                order: 3;
                flex-direction: column;
                border-top: 1px solid var(--border);
                padding-top: 12px;
            }

            .site-nav.open {
                display: flex;
            }

            .site-nav__list {
                flex-direction: column;
                width: 100%;
                gap: 4px;
            }

            .site-nav__link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .mega-panel {
                position: static;
                width: 100%;
                opacity: 1;
                visibility: visible;
                transform: none;
                pointer-events: auto;
                box-shadow: none;
                border: none;
                padding: 12px 0 4px;
                display: none;
            }

            .site-nav__item.open .mega-panel {
                display: block;
            }

            .mega-panel__grid {
                grid-template-columns: 1fr;
            }

            .header-cta {
                display: none;
            }

            .hero {
                padding: 70px 0;
            }

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

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

            .category-card {
                min-height: 280px;
            }

            .news-sidebar {
                grid-template-columns: 1fr;
            }

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

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

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

            .footer__copyright {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 26px;
            }

            .hero__title {
                font-size: 30px;
            }

            .hero__actions {
                flex-direction: column;
            }

            .hero__actions .btn {
                width: 100%;
            }

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

            .hero__stats {
                gap: 20px;
            }

            .header-cta {
                display: none;
            }

            .container {
                padding: 0 18px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #ffffff;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --transition: 0.25s ease;
            --container: 72rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        ul, ol {
            list-style: none;
        }

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

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

        .grid-container {
            max-width: var(--container);
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .site-header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .site-logo__mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        .site-logo__text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .site-logo__sub {
            display: block;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-light);
            letter-spacing: 0.08em;
        }

        .site-nav__list {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .site-nav__item {
            position: relative;
        }

        .site-nav__link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 10px;
            transition: all var(--transition);
        }

        .site-nav__link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .site-nav__item.active > .site-nav__link {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .site-nav__item.active > .site-nav__link::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .site-nav__link i.fa-chevron-down {
            font-size: 11px;
            opacity: 0.6;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 8px);
            left: -120px;
            width: 480px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
            z-index: 100;
        }

        .site-nav__item:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel__grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .mega-item {
            display: flex;
            flex-direction: column;
            padding: 14px;
            border-radius: 12px;
            background: var(--bg-light);
            transition: all var(--transition);
        }

        .mega-item:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .mega-item__icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border-radius: 10px;
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 8px;
            box-shadow: var(--shadow-sm);
        }

        .mega-item__title {
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 4px;
            color: var(--text);
        }

        .mega-item__desc {
            font-size: 12px;
            color: var(--text-light);
            line-height: 1.5;
        }

        .site-nav__cta {
            margin-left: 12px;
        }

        .site-nav__cta .btn {
            padding: 10px 20px;
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 12px;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }

        .btn-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn:active {
            transform: scale(0.97);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 100px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-light);
        }

        /* ===== Hero / Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 88px 0 72px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(29, 78, 216, 0.75));
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .page-banner__actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .page-banner__meta {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 32px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .page-banner__meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Section Global ===== */
        .section {
            padding: 72px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-head__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Quick Cards ===== */
        .quick-cards .grid-x {
            margin: 0 -12px;
        }

        .quick-cards .cell {
            padding: 12px;
        }

        .quick-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .quick-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .quick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

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

        .quick-card__icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .quick-card__icon.orange {
            background: var(--accent-light);
            color: var(--accent);
        }

        .quick-card__icon.green {
            background: #dcfce7;
            color: #16a34a;
        }

        .quick-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .quick-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .quick-card__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .quick-card__tags span {
            padding: 4px 10px;
            background: var(--bg-light);
            border-radius: 6px;
            font-size: 12px;
            color: var(--text-light);
            border: 1px solid var(--border);
        }

        .quick-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap 0.3s ease;
        }

        .quick-card__link:hover {
            gap: 10px;
        }

        /* ===== Step Guide ===== */
        .step-guide {
            background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
        }

        .step-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.4s ease;
        }

        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .step-item__num {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .step-item::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            top: 50%;
            right: -17px;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 14px;
            z-index: 2;
            background: #fff;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .step-item:last-child::after {
            display: none;
        }

        /* ===== Device Guide ===== */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .device-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.4s ease;
        }

        .device-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .device-card__img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .device-card__body {
            padding: 24px;
        }

        .device-card__tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            border-radius: 100px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .device-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .device-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .device-card ul {
            list-style: none;
            padding: 0;
        }

        .device-card ul li {
            font-size: 13px;
            color: var(--text);
            padding: 6px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .device-card ul li:last-child {
            border-bottom: none;
        }

        .device-card ul li i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== Compare Table ===== */
        .compare-table-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
        }

        .compare-table th {
            background: var(--bg-light);
            font-size: 14px;
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            border-bottom: 2px solid var(--border);
            white-space: nowrap;
        }

        .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table tr:hover td {
            background: var(--bg-light);
        }

        .compare-table .rating {
            display: flex;
            gap: 2px;
            color: var(--accent);
            font-size: 12px;
        }

        .compare-table .tag-recommend {
            display: inline-block;
            background: #dcfce7;
            color: #16a34a;
            padding: 4px 10px;
            font-size: 12px;
            border-radius: 100px;
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            transition: all 0.3s ease;
        }

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

        .faq-item__header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            gap: 16px;
        }

        .faq-item__header i {
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-item__body p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 92px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.85);
        }

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

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 24px;
        }

        .cta-section__actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-brand__text {
            font-size: 18px;
            font-weight: 700;
        }

        .footer-brand__desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 360px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-links a i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .step-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .step-item::after {
                display: none;
            }

            .device-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header__inner {
                height: 64px;
            }

            .mobile-toggle {
                display: flex;
            }

            .site-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
                visibility: hidden;
            }

            .site-nav.open {
                max-height: 560px;
                overflow-y: auto;
                visibility: visible;
            }

            .site-nav__list {
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                align-items: stretch;
            }

            .site-nav__item {
                width: 100%;
            }

            .site-nav__link {
                padding: 14px 12px;
                width: 100%;
                justify-content: space-between;
            }

            .site-nav__item.active > .site-nav__link::after {
                display: none;
            }

            .mega-panel {
                position: static;
                width: 100%;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                border-left: 3px solid var(--primary);
                border-radius: 0;
                padding: 12px;
                margin: 4px 0 8px;
                display: none;
            }

            .site-nav__item:hover .mega-panel,
            .site-nav__item.open .mega-panel {
                display: block;
            }

            .mega-panel__grid {
                grid-template-columns: 1fr;
                gap: 6px;
            }

            .site-nav__cta {
                margin-left: 0;
                margin-top: 8px;
            }

            .site-nav__cta .btn {
                width: 100%;
            }

            .page-banner {
                padding: 56px 0 48px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

            .page-banner p {
                font-size: 15px;
            }

            .page-banner__meta {
                flex-direction: column;
                gap: 8px;
            }

            .section {
                padding: 48px 0;
            }

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

            .device-grid,
            .step-list {
                grid-template-columns: 1fr;
            }

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

            .compare-table-wrap {
                overflow-x: auto;
            }

            .compare-table {
                min-width: 640px;
            }

            .cta-section {
                padding: 60px 0;
            }

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

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

            .site-logo__text {
                font-size: 17px;
            }

            .site-logo__sub {
                font-size: 11px;
            }

            .site-logo__mark {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .page-banner h1 {
                font-size: 24px;
            }

            .page-banner p {
                font-size: 14px;
            }

            .page-banner__actions {
                flex-direction: column;
            }

            .page-banner__actions .btn {
                width: 100%;
            }

            .quick-card {
                padding: 20px;
            }

            .step-item {
                padding: 20px;
            }

            .device-card__img {
                height: 150px;
            }

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

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

        @media (max-width: 640px) {
            .grid-x > .cell {
                padding: 0 0 24px;
            }

            .quick-cards .grid-x {
                margin: 0;
            }

            .quick-cards .cell {
                padding: 0 0 20px;
            }
        }

        /* ===== Focus states ===== */
        a:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
  --primary:#0f2b46; --primary-light:#1a3a5c; --primary-dark:#091e33;
  --accent:#d4a853; --accent-light:#e8c97a; --accent-dark:#b8913e;
  --bg:#f6f8fb; --bg-white:#ffffff; --bg-gray:#eef1f5;
  --text:#1e2a3a; --text-light:#6b7a8d; --border:#e2e8f0;
  --radius:14px; --radius-sm:8px;
  --shadow:0 8px 30px rgba(0,0,0,.08); --shadow-lg:0 16px 48px rgba(0,0,0,.12);
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.grid-x{display:flex;flex-wrap:wrap}
.cell{flex:0 0 auto;min-width:0}

/* ===== Header 导航 ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);box-shadow:0 2px 12px rgba(15,43,70,.06)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.site-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.site-logo__mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;box-shadow:0 4px 14px rgba(15,43,70,.3)}
.site-logo__text{font-size:22px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:.5px}
.site-logo__sub{display:block;font-size:12px;color:var(--text-light);font-weight:400;letter-spacing:1px}
.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:6px}
.site-nav__item{position:relative}
.site-nav__link{display:flex;align-items:center;gap:6px;padding:10px 16px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text)}
.site-nav__link i{font-size:11px;color:var(--text-light);transition:var(--transition)}
.site-nav__item:hover .site-nav__link,.site-nav__item.active .site-nav__link{color:var(--primary);background:rgba(15,43,70,.06)}
.site-nav__item.active .site-nav__link{font-weight:600}
.site-nav__item:hover .site-nav__link i{transform:rotate(180deg)}
.mega-panel{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(10px);width:560px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:24px;opacity:0;visibility:hidden;transition:all .3s ease;border:1px solid var(--border);z-index:100}
.site-nav__item:hover .mega-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-panel__grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.mega-item{display:flex;flex-direction:column;gap:8px;padding:16px;border-radius:12px;background:var(--bg);transition:var(--transition);border:1px solid transparent}
.mega-item:hover{background:#fff;border-color:var(--border);box-shadow:var(--shadow);transform:translateY(-2px)}
.mega-item__icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:16px}
.mega-item__title{font-size:14px;font-weight:600;color:var(--primary)}
.mega-item__desc{font-size:12px;color:var(--text-light);line-height:1.5}
.header-actions{margin-left:12px;display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 6px 20px rgba(15,43,70,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(15,43,70,.35);color:#fff}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--primary);box-shadow:0 6px 20px rgba(212,168,83,.3)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(212,168,83,.4)}
.btn-outline{background:transparent;border:2px solid rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.15);color:#fff}
.btn-sm{padding:8px 20px;font-size:14px}
.mobile-toggle{display:none;background:none;border:none;font-size:22px;color:var(--primary);padding:8px}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.85)}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.breadcrumb .current{color:var(--accent-light)}

/* ===== 文章头部 Hero ===== */
.article-hero{position:relative;padding:70px 0 90px;background-size:cover;background-position:center;background-repeat:no-repeat}
.article-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(9,30,51,.94),rgba(15,43,70,.82))}
.article-hero__content{position:relative;z-index:2;max-width:920px}
.article-hero h1{font-size:36px;font-weight:700;color:#fff;line-height:1.3;margin:16px 0 18px;letter-spacing:.5px}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;color:rgba(255,255,255,.8);font-size:14px}
.article-meta i{margin-right:4px;color:var(--accent-light)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:30px;font-size:13px;font-weight:500}
.badge-accent{background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--primary)}
.badge-light{background:rgba(255,255,255,.15);color:#fff}

/* ===== 文章主体 ===== */
.article-section{padding:50px 0 60px;position:relative}
.article-body{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 44px;border:1px solid rgba(226,232,240,.6)}
.article-content{font-size:16px;line-height:2;color:#334155}
.article-content p{margin-bottom:22px}
.article-content h2,.article-content h3{color:var(--primary);margin:32px 0 16px;font-weight:700;line-height:1.4}
.article-content h2{font-size:24px;padding-left:14px;border-left:4px solid var(--accent)}
.article-content h3{font-size:19px}
.article-content img{border-radius:12px;margin:20px 0}
.article-content ul,.article-content ol{margin:20px 0;padding-left:24px}
.article-content ul li,.article-content ol li{margin-bottom:10px;position:relative}
.article-content ul li::before{content:'▸';color:var(--accent);position:absolute;left:-18px}
.article-content blockquote{border-left:4px solid var(--accent);background:var(--bg);padding:18px 22px;border-radius:10px;margin:24px 0;color:var(--text-light);font-style:italic}
.article-content a{color:var(--primary);border-bottom:1px solid var(--accent)}
.article-content a:hover{color:var(--accent-dark)}
.article-tags{margin-top:40px;padding-top:24px;border-top:1px solid var(--border);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.article-tags .badge{background:var(--bg);border:1px solid var(--border);color:var(--text-light);font-weight:400}
.article-tags .badge:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== 侧边栏 ===== */
.sidebar .widget{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;margin-bottom:24px;border:1px solid rgba(226,232,240,.5)}
.widget-title{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--bg)}
.widget-title i{color:var(--accent);margin-right:8px}
.sidebar-list li{margin-bottom:10px}
.sidebar-list a{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;border-radius:10px;background:var(--bg);font-size:14px;color:var(--text);transition:var(--transition)}
.sidebar-list a:hover{background:var(--primary);color:#fff;transform:translateX(4px)}
.sidebar-list a i{color:var(--accent);margin-top:4px}
.sidebar-list a:hover i{color:var(--accent-light)}
.widget-tags{display:flex;flex-wrap:wrap;gap:8px}
.widget-tags a{display:inline-block;padding:6px 14px;border-radius:20px;background:var(--bg);border:1px solid var(--border);font-size:13px;color:var(--text-light);transition:var(--transition)}
.widget-tags a:hover{background:var(--accent);color:var(--primary);border-color:var(--accent)}
.sidebar-cta{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;text-align:center}
.sidebar-cta h3{font-size:20px;margin-bottom:10px}
.sidebar-cta p{font-size:14px;opacity:.85;margin-bottom:20px}

/* ===== 相关推荐 ===== */
.related-section{padding:50px 0 60px;background:var(--bg)}
.section-title{font-size:28px;font-weight:700;color:var(--primary);text-align:center;margin-bottom:12px}
.section-subtitle{text-align:center;color:var(--text-light);margin-bottom:40px;font-size:15px}
.section-title::after{content:'';display:block;width:60px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-light));margin:12px auto 0}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.5);transition:var(--transition);height:100%;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card__img{position:relative;overflow:hidden}
.card__img img{width:100%;height:220px;object-fit:cover;transition:transform .5s ease}
.card:hover .card__img img{transform:scale(1.05)}
.card__img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(15,43,70,.2))}
.card__body{padding:24px;flex:1;display:flex;flex-direction:column}
.card__cat{display:inline-block;padding:4px 12px;border-radius:20px;background:rgba(212,168,83,.15);color:var(--accent-dark);font-size:12px;font-weight:600;margin-bottom:12px;align-self:flex-start}
.card__title{font-size:18px;font-weight:600;color:var(--primary);margin-bottom:10px;line-height:1.4}
.card__title a:hover{color:var(--accent-dark)}
.card__desc{font-size:14px;color:var(--text-light);line-height:1.7;flex:1}
.card__meta{display:flex;gap:14px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--text-light)}

/* ===== 服务说明 ===== */
.service-section{padding:70px 0;background:linear-gradient(135deg,var(--primary),var(--primary-light));position:relative;overflow:hidden}
.service-section::before{content:'';position:absolute;top:-120px;right:-120px;width:300px;height:300px;border-radius:50%;background:rgba(212,168,83,.12)}
.service-section::after{content:'';position:absolute;bottom:-80px;left:-80px;width:200px;height:200px;border-radius:50%;background:rgba(212,168,83,.08)}
.service-section .section-title{color:#fff}
.service-section .section-title::after{background:linear-gradient(90deg,#fff,var(--accent-light))}
.service-section .section-subtitle{color:rgba(255,255,255,.75)}
.service-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);padding:36px 28px;text-align:center;backdrop-filter:blur(8px);transition:var(--transition);height:100%}
.service-card:hover{background:rgba(255,255,255,.14);transform:translateY(-6px)}
.service-card__icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 20px;box-shadow:0 8px 20px rgba(212,168,83,.35)}
.service-card h3{color:#fff;font-size:18px;margin-bottom:12px}
.service-card p{color:rgba(255,255,255,.8);font-size:14px;line-height:1.8}

/* ===== FAQ ===== */
.faq-section{padding:70px 0;background:var(--bg)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden;border:1px solid var(--border)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;padding:22px 28px;cursor:pointer;font-weight:600;color:var(--primary);font-size:16px;list-style:none;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;font-size:13px;color:var(--accent);transition:var(--transition)}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item[open] summary{background:rgba(15,43,70,.03)}
.faq-item .faq-answer{padding:0 28px 24px;color:var(--text-light);font-size:15px;line-height:1.8}

/* ===== CTA ===== */
.cta-section{position:relative;padding:80px 0;background-size:cover;background-position:center;background-attachment:fixed}
.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(9,30,51,.92),rgba(15,43,70,.8))}
.cta-content{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.cta-content h2{font-size:34px;color:#fff;font-weight:700;margin-bottom:16px;line-height:1.3}
.cta-content p{color:rgba(255,255,255,.85);font-size:16px;margin-bottom:30px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.75);padding:70px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand__logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand__text{font-size:18px;font-weight:700;color:#fff}
.footer-brand__desc{line-height:1.8;margin-bottom:20px;color:rgba(255,255,255,.65)}
.footer-title{font-size:16px;color:#fff;margin-bottom:18px;font-weight:600;position:relative;padding-bottom:10px}
.footer-title::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--accent)}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.65);transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-links a:hover{color:var(--accent-light);padding-left:4px}
.footer-links a i{font-size:12px;color:var(--accent)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:24px 0;flex-wrap:wrap;gap:12px;color:rgba(255,255,255,.5);font-size:13px}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent-light)}

/* ===== 内容未找到 ===== */
.error-page{text-align:center;padding:80px 0}
.error-code{font-size:80px;font-weight:700;color:var(--accent);line-height:1}
.error-title{font-size:28px;color:var(--primary);margin:20px 0 12px;font-weight:700}
.error-desc{color:var(--text-light);max-width:500px;margin:0 auto 30px}

/* ===== 响应式 ===== */
@media (max-width:1024px){
.mega-panel{display:none}
.site-nav{position:fixed;top:76px;left:0;right:0;background:#fff;padding:20px;box-shadow:0 10px 30px rgba(0,0,0,.1);transform:translateY(-20px);opacity:0;visibility:hidden;transition:var(--transition);z-index:999}
.site-nav.nav-open{transform:translateY(0);opacity:1;visibility:visible}
.site-nav__list{flex-direction:column;align-items:flex-start;gap:4px}
.site-nav__item{width:100%}
.site-nav__link{width:100%;justify-content:space-between}
.mobile-toggle{display:block;margin-left:auto}
.header-actions{display:none}
.footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
.site-header__inner{height:64px}
.site-logo__text{font-size:18px}
.site-logo__mark{width:36px;height:36px;font-size:16px}
.article-hero{padding:50px 0 70px}
.article-hero h1{font-size:26px}
.article-body{padding:24px 20px}
.article-content{font-size:15px}
.article-content h2{font-size:20px}
.section-title{font-size:24px}
.cta-content h2{font-size:26px}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
.error-code{font-size:60px}
.grid-x>.cell{width:100%;margin-bottom:20px}
}
@media (max-width:520px){
.container{padding:0 16px}
.article-meta{flex-direction:column;align-items:flex-start}
.article-tags{flex-direction:column;align-items:flex-start}
.cta-buttons{flex-direction:column}
.cta-buttons .btn{width:100%}
.footer-bottom{flex-direction:column}
.service-card{padding:24px 18px}
}

/* roulang page: category2 */
:root {
            --primary: #1a5296;
            --primary-light: #2563eb;
            --primary-dark: #0f3a75;
            --accent: #ff8a0c;
            --accent-light: #ffb347;
            --dark: #0d1b2a;
            --bg: #f7f9fc;
            --bg-light: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(26, 82, 150, 0.08);
            --shadow-lg: 0 20px 40px rgba(26, 82, 150, 0.15);
            --transition: all 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            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 {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(13, 27, 42, 0.04);
        }
        .site-header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 30px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .site-logo__mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .site-logo__text {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.2;
            display: flex;
            flex-direction: column;
        }
        .site-logo__sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: flex-end;
        }
        .site-nav__list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .site-nav__item {
            position: relative;
        }
        .site-nav__link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }
        .site-nav__link i {
            font-size: 11px;
            color: var(--text-muted);
            transition: transform .3s;
        }
        .site-nav__link:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
        }
        .site-nav__item.active > .site-nav__link {
            color: var(--primary);
            font-weight: 600;
            background: rgba(37, 99, 235, 0.08);
        }
        .site-nav__item.active > .site-nav__link i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(12px);
            width: 620px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 100;
        }
        .site-nav__item:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(4px);
        }
        .mega-panel__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .mega-item {
            display: block;
            padding: 18px 14px;
            border-radius: 12px;
            background: var(--bg);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .mega-item:hover {
            background: #fff;
            border-color: var(--border);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .mega-item__icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(255, 138, 12, 0.1));
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 10px;
        }
        .mega-item__title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            display: block;
            margin-bottom: 4px;
        }
        .mega-item__desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
            display: block;
        }
        .site-nav__cta {
            margin-left: 8px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 138, 12, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 138, 12, 0.35);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(37, 99, 235, 0.06);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
            color: var(--primary);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: 14px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 84px 0 64px;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88), rgba(26, 82, 150, 0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            top: -120px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(255, 138, 12, 0.12);
            pointer-events: none;
        }
        .page-hero__inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 400px;
            gap: 60px;
            align-items: center;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 16px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 span {
            color: var(--accent-light);
        }
        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 28px;
            max-width: 520px;
        }
        .page-hero__actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-quick {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius);
            padding: 28px 24px;
        }
        .hero-quick__title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-quick__title i {
            color: var(--accent-light);
        }
        .hero-quick__list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .hero-quick__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 14px;
            transition: var(--transition);
        }
        .hero-quick__link:hover {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            transform: translateX(4px);
        }
        .hero-quick__link i:first-child {
            color: var(--accent-light);
            width: 18px;
        }
        .hero-quick__link i:last-child {
            margin-left: auto;
            font-size: 12px;
            opacity: 0.5;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section--light {
            background: var(--bg-light);
        }
        .section--gray {
            background: var(--bg);
        }
        .section--dark {
            background: var(--dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .section--dark::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .section--dark .section-header h2 {
            color: #fff;
        }
        .section--dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .section--dark .section-kicker {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent-light);
        }

        /* ===== Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card__icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(255, 138, 12, 0.08));
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-card__icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0 0 16px;
        }
        .feature-card__tag {
            display: inline-flex;
            padding: 4px 12px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Split ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 72px;
        }
        .split-block:last-child {
            margin-bottom: 0;
        }
        .split-block--reverse .split-block__image {
            order: 2;
        }
        .split-block--reverse .split-block__content {
            order: 1;
        }
        .split-block__image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .split-block__image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius);
            background: linear-gradient(180deg, transparent 60%, rgba(13, 27, 42, 0.25));
            pointer-events: none;
        }
        .split-block__image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .split-block__content h3 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            margin: 0 0 14px;
            line-height: 1.4;
        }
        .split-block__content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0 0 20px;
        }
        .split-block__list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }
        .split-block__list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text);
        }
        .split-block__list li i {
            color: var(--accent);
            margin-top: 3px;
            font-size: 14px;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-item__number {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item__label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            position: relative;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            transition: var(--transition);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 24px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(255, 138, 12, 0.3);
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .step-card__icon {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 14px;
            margin-top: 8px;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .acc-card {
            background: var(--bg-light);
            border: 1px solid var(--border) !important;
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .acc-card .accordion-title {
            background: transparent !important;
            border: none !important;
            border-bottom: 1px solid transparent !important;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 12px;
            outline: none;
            transition: var(--transition);
        }
        .acc-card .accordion-title:hover {
            background: rgba(37, 99, 235, 0.03) !important;
            color: var(--primary);
        }
        .acc-card .accordion-title::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent);
            font-size: 15px;
        }
        .acc-card .accordion-title::after {
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\f078';
            margin-left: auto;
            color: var(--text-muted);
            font-size: 14px;
        }
        .acc-card.is-active .accordion-title::after {
            content: '\f077';
            color: var(--primary);
        }
        .acc-card .accordion-content {
            background: transparent !important;
            border: none !important;
            color: var(--text-muted);
            padding: 0 24px 22px !important;
            font-size: 15px;
            line-height: 1.8;
        }
        .acc-card .accordion-content p {
            margin-bottom: 10px;
        }
        .acc-card .accordion-content p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)););
            border-radius: 24px;
            padding: 60px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-block h2 {
            font-size: 30px;
            font-weight: 800;
            margin: 0 0 12px;
        }
        .cta-block p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 auto 28px;
            max-width: 480px;
        }
        .cta-block__actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #fff;
            padding: 70px 0 0;
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand__text {
            font-size: 18px;
            font-weight: 700;
        }
        .footer-brand__desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.75;
            margin-bottom: 20px;
            max-width: 360px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
        }
        .badge-accent {
            background: rgba(255, 138, 12, 0.15);
            color: var(--accent-light);
            border: 1px solid rgba(255, 138, 12, 0.25);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 20px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }
        .footer-links a i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-links .footer-link--muted {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: default;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }
        .footer-bottom__links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom__links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
        }
        .footer-bottom__links a:hover {
            color: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .page-hero__inner {
                grid-template-columns: 1fr 320px;
                gap: 40px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-block {
                gap: 40px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 768px) {
            .site-header__inner {
                height: 64px;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .site-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px 28px;
                box-shadow: 0 20px 40px rgba(13, 27, 42, 0.1);
                border-bottom: 1px solid var(--border);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: var(--transition);
                align-items: stretch;
                z-index: 999;
            }
            .site-nav.is-open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .site-nav__list {
                flex-direction: column;
                gap: 0;
                width: 100%;
            }
            .site-nav__item {
                width: 100%;
            }
            .site-nav__link {
                padding: 14px 12px;
                border-radius: 8px;
                justify-content: space-between;
                font-size: 16px;
            }
            .mega-panel {
                position: static;
                transform: none;
                width: 100%;
                box-shadow: none;
                border: 1px solid var(--border);
                border-radius: 12px;
                padding: 16px;
                opacity: 1;
                visibility: visible;
                display: none;
                margin-top: 4px;
            }
            .site-nav__item:hover .mega-panel {
                transform: none;
            }
            .site-nav__item.is-open .mega-panel {
                display: block;
            }
            .mega-panel__grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .mega-item {
                padding: 12px;
                display: flex;
                align-items: center;
                gap: 12px;
            }
            .mega-item__icon {
                margin-bottom: 0;
                width: 36px;
                height: 36px;
                flex-shrink: 0;
            }
            .site-nav__cta {
                width: 100%;
                margin: 16px 0 0;
                text-align: center;
            }
            .site-nav__cta .btn {
                width: 100%;
            }
            .page-hero {
                padding: 60px 0 44px;
            }
            .page-hero__inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .hero-quick {
                padding: 20px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .split-block--reverse .split-block__image {
                order: 1;
            }
            .split-block--reverse .split-block__content {
                order: 2;
            }
            .split-block__image img {
                height: 260px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item__number {
                font-size: 32px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-block {
                padding: 40px 20px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
        }
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero__actions {
                flex-direction: column;
                width: 100%;
            }
            .page-hero__actions .btn {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .cta-block__actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-block__actions .btn {
                width: 100%;
            }
            .footer-bottom__links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .site-logo__text {
                font-size: 16px;
            }
            .site-logo__sub {
                font-size: 11px;
            }
        }

        /* ===== Focus Accessible ===== */
        a:focus,
        button:focus,
        .accordion-title:focus {
            outline: 3px solid rgba(255, 138, 12, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root {
            --primary: #0f2b46;
            --primary-light: #1a4370;
            --accent: #f0b90b;
            --accent-dark: #d4a10a;
            --text: #1c2b36;
            --text-light: #5b6b7b;
            --bg: #f5f7fa;
            --white: #ffffff;
            --border: #e3e8ef;
            --radius: 16px;
            --shadow: 0 10px 30px rgba(15, 43, 70, 0.08);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            font-size: 16px;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

        button {
            cursor: pointer;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(15, 43, 70, 0.06);
        }

        .site-header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .site-logo__mark {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }

        .site-logo__text {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .site-logo__sub {
            display: block;
            font-size: 12px;
            font-weight: 400;
            color: var(--text-light);
            letter-spacing: 1px;
        }

        .site-nav__list {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }

        .site-nav__item {
            position: relative;
        }

        .site-nav__link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 8px;
            font-weight: 500;
            color: var(--text);
            transition: all .2s;
        }

        .site-nav__link i {
            font-size: 12px;
            color: var(--text-light);
            transition: transform .2s;
        }

        .site-nav__link:hover {
            color: var(--primary);
            background: rgba(15, 43, 70, 0.05);
        }

        .site-nav__item.active > .site-nav__link {
            color: var(--accent-dark);
            background: rgba(240, 185, 11, 0.12);
        }

        .mega-panel {
            position: absolute;
            left: 50%;
            top: 100%;
            transform: translateX(-50%);
            width: 560px;
            background: #fff;
            border-radius: 14px;
            box-shadow: 0 20px 50px rgba(15, 43, 70, 0.18);
            padding: 16px;
            opacity: 0;
            visibility: hidden;
            transition: all .2s;
            border: 1px solid var(--border);
        }

        .mega-panel__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .mega-item {
            display: block;
            padding: 16px 12px;
            background: var(--bg);
            border-radius: 12px;
            transition: all .2s;
        }

        .mega-item:hover {
            background: #fff;
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .mega-item__icon {
            display: inline-flex;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-dark);
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .mega-item__title {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .mega-item__desc {
            display: block;
            font-size: 13px;
            color: var(--text-light);
            margin-top: 6px;
        }

        .site-nav__item:hover .mega-panel,
        .site-nav__item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 0;
            font-size: 24px;
            color: var(--primary);
            padding: 6px;
        }

        .page-hero {
            position: relative;
            padding: 90px 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 43, 70, 0.92), rgba(15, 43, 70, 0.55));
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            margin: 0 0 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .current {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            margin: 0 0 14px;
        }

        .page-hero p {
            font-size: 17px;
            max-width: 600px;
            margin: 0 0 28px;
            opacity: .9;
        }

        .page-hero__actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid transparent;
            transition: all .2s;
        }

        .btn-primary {
            background: var(--accent);
            color: #0a0a0a;
            box-shadow: 0 4px 14px rgba(240, 185, 11, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(240, 185, 11, 0.4);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
            background: transparent;
        }

        .btn-outline:hover {
            background: #fff;
            color: var(--primary);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
        }

        .btn-light:hover {
            background: var(--bg);
            transform: translateY(-2px);
        }

        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 10px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            margin: 0;
        }

        .support-grid .cell {
            margin-bottom: 24px;
        }

        .support-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all .3s;
            height: 100%;
        }

        .support-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 40px rgba(15, 43, 70, 0.12);
            border-color: rgba(240, 185, 11, 0.4);
        }

        .support-card__icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent);
            font-size: 22px;
            margin-bottom: 18px;
        }

        .support-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin: 0 0 8px;
        }

        .support-card p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0 0 16px;
        }

        .support-card a {
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .support-card a:hover {
            color: var(--primary);
        }

        .accordion {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .accordion-item {
            border-bottom: 1px solid var(--border);
        }

        .accordion-item:last-child {
            border-bottom: 0;
        }

        .accordion-title {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background .2s;
        }

        .accordion-title::before {
            display: none;
        }

        .accordion-title::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--text-light);
            transition: transform .2s;
        }

        .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
        }

        .accordion-title:hover {
            background: var(--bg);
            color: var(--primary);
        }

        .accordion-content {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }

        .side-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius);
            padding: 28px;
            color: #fff;
        }

        .side-card h3 {
            color: #fff;
            margin: 0 0 12px;
        }

        .side-card p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
        }

        .side-card__list {
            list-style: none;
            margin: 18px 0 0;
            padding: 0;
        }

        .side-card__list li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }

        .side-card__list li:last-child {
            border-bottom: 0;
        }

        .side-card__list a {
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }

        .side-card__list a:hover {
            color: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .process-item {
            text-align: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 20px;
            box-shadow: var(--shadow);
            transition: all .2s;
        }

        .process-item:hover {
            border-color: var(--accent);
        }

        .process-step {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--accent);
            color: #0a0a0a;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            box-shadow: 0 6px 14px rgba(240, 185, 11, 0.3);
        }

        .process-item h3 {
            font-size: 17px;
            margin: 0 0 8px;
            color: var(--primary);
        }

        .process-item p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
        }

        .guide-cards .cell {
            margin-bottom: 24px;
        }

        .guide-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all .3s;
            height: 100%;
        }

        .guide-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 42px rgba(15, 43, 70, 0.12);
        }

        .guide-card__media {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary);
        }

        .guide-card__media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }

        .guide-card:hover .guide-card__media img {
            transform: scale(1.05);
        }

        .guide-card__body {
            padding: 22px 20px;
        }

        .guide-card__tag {
            display: inline-block;
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-dark);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .guide-card__body h3 {
            font-size: 18px;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .guide-card__body p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0 0 14px;
        }

        .guide-card__link {
            font-weight: 600;
            color: var(--accent-dark);
        }

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

        .cta-section {
            padding: 90px 0;
        }

        .cta-box {
            background: linear-gradient(120deg, var(--primary), var(--primary-light));
            border-radius: 22px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(15, 43, 70, 0.25);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 220px;
            height: 220px;
            background: rgba(240, 185, 11, 0.15);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 32px;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 26px;
            position: relative;
            z-index: 1;
        }

        .cta-box .btn {
            position: relative;
            z-index: 1;
        }

        .site-footer {
            background: #0a1e31;
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 50px;
        }

        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-brand__text {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand__desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
        }

        .footer-badges {
            display: flex;
            gap: 10px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.75);
        }

        .badge-accent {
            background: rgba(240, 185, 11, 0.2);
            color: var(--accent);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .2s;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom p {
            margin: 4px 0;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header__inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
            }

            .mobile-toggle {
                display: block;
            }

            .site-nav {
                display: none;
                width: 100%;
            }

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

            .site-nav__list {
                flex-direction: column;
                gap: 4px;
            }

            .mega-panel {
                position: static;
                transform: none;
                width: 100%;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                border: 0;
                padding: 12px;
                background: var(--bg);
                display: none;
                margin-top: 4px;
            }

            .site-nav__item.open .mega-panel {
                display: block;
            }

            .mega-panel__grid {
                grid-template-columns: 1fr;
            }

            .page-hero {
                padding: 60px 0;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero p {
                font-size: 15px;
            }

            .section {
                padding: 60px 0;
            }

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

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

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

            .cta-box {
                padding: 36px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }
        }