/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --bs-primary: #2C5F8A;
            --bs-primary-rgb: 44, 95, 138;
            --bs-link-color: #2C5F8A;
            --bs-link-hover-color: #1E4365;
            --bs-body-font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --bs-body-bg: #F6F8FB;
            --bs-body-color: #233242;
            --primary: #2C5F8A;
            --primary-dark: #1E4365;
            --primary-light: #E8F0F7;
            --accent: #F08C3E;
            --accent-dark: #D9782A;
            --bg-body: #F6F8FB;
            --bg-white: #FFFFFF;
            --text-body: #233242;
            --text-secondary: #5A6B7C;
            --text-muted: #8A99A8;
            --border-color: rgba(44, 95, 138, 0.12);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 4px;
            --shadow-card: 0 8px 24px rgba(44, 95, 138, 0.08);
            --shadow-hover: 0 14px 34px rgba(44, 95, 138, 0.14);
            --transition: all 0.3s ease;
        }

        /* ===== 基础重置 ===== */
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-body-font-family);
            background: var(--bg-body);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--text-body);
        }
        .container {
            max-width: 1200px;
        }

        /* ===== 通用区块 ===== */
        .section-padding {
            padding: 90px 0;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header.text-start {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 30px;
            line-height: 1.4;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-header.text-start p {
            margin: 0;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--accent);
            background: rgba(240, 140, 62, 0.1);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .bg-light {
            background: var(--bg-body);
        }

        /* ===== 按钮 ===== */
        .btn {
            height: 46px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            padding: 0 24px;
            border: 2px solid transparent;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn-lg {
            height: 52px;
            padding: 0 32px;
            font-size: 17px;
        }
        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(240, 140, 62, 0.3);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(240, 140, 62, 0.4);
            transform: translateY(-2px);
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(240, 140, 62, 0.3);
        }
        .btn-outline-primary {
            background: #fff;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-primary:active {
            transform: translateY(0);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(44, 95, 138, 0.05);
        }
        .site-header .navbar {
            background: transparent;
            padding: 14px 0;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-body);
            line-height: 1.2;
        }
        .custom-navbar .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }
        .custom-navbar .navbar-toggler {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 6px 10px;
        }
        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
        }
        .custom-navbar .navbar-toggler-icon {
            background-image: none;
            position: relative;
        }
        .custom-navbar .navbar-toggler-icon::before {
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f0c9";
            font-size: 18px;
            color: var(--primary);
        }
        .custom-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 10px 18px !important;
            position: relative;
        }
        .custom-navbar .nav-link::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s;
        }
        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            transform: scaleX(1);
        }
        .custom-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            min-width: 120px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #F0F5FA 0%, #E8F0F7 100%);
            padding: 80px 0 64px;
            overflow: hidden;
        }
        .hero-tagline {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: rgba(44, 95, 138, 0.1);
            border: 1px solid rgba(44, 95, 138, 0.15);
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-body);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 520px;
            margin-bottom: 30px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-visual img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
        }
        .hero-stats {
            border-top: 1px solid rgba(44, 95, 138, 0.12);
            padding-top: 24px;
            margin-top: 8px;
        }
        .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== 优惠阶梯 ===== */
        .tier-section {
            background: var(--bg-white);
        }
        .tier-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            position: relative;
            height: 100%;
            transition: var(--transition);
        }
        .tier-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .recommended-card {
            border: 2px solid var(--accent);
            box-shadow: 0 12px 32px rgba(240, 140, 62, 0.15);
        }
        .badge-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            white-space: nowrap;
            box-shadow: 0 4px 10px rgba(240, 140, 62, 0.3);
        }
        .tier-name {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .tier-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .tier-amount {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .tier-amount span {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .tier-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .tier-list li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .tier-list li i {
            color: var(--primary);
            font-size: 13px;
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }
        .recommended-card .tier-list li i {
            color: var(--accent);
        }
        .recommended-card .tier-amount {
            color: var(--accent);
        }

        /* ===== 套餐对比 ===== */
        .compare-section .section-header {
            margin-bottom: 36px;
        }
        .compare-table-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 20px;
            overflow-x: auto;
            border: 1px solid var(--border-color);
        }
        .compare-table {
            margin-bottom: 0;
            min-width: 720px;
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 18px;
            text-align: center;
            vertical-align: middle;
            border-bottom: 1px solid rgba(44, 95, 138, 0.08);
            font-size: 15px;
            white-space: nowrap;
        }
        .compare-table thead th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
        }
        .compare-table thead th:first-child {
            background: var(--primary-light);
            color: var(--text-body);
        }
        .compare-table thead th.recommended-col {
            background: var(--accent);
        }
        .compare-table thead th:first-child {
            border-radius: var(--radius-md) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }
        .compare-table tbody tr {
            transition: background 0.2s;
        }
        .compare-table tbody tr:hover {
            background: rgba(44, 95, 138, 0.04);
        }
        .compare-table td.recommended-col {
            background: rgba(240, 140, 62, 0.05);
        }
        .compare-table tbody tr:hover td.recommended-col {
            background: rgba(240, 140, 62, 0.1);
        }
        .compare-table .action-row td {
            border-bottom: none;
            padding: 20px 18px;
        }
        .compare-table td:first-child {
            font-weight: 600;
            color: var(--text-body);
        }
        .compare-table .table-bottom td {
            font-weight: 700;
            background: var(--bg-body);
        }

        /* ===== 限时入口 ===== */
        .countdown-section {
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: #fff;
            text-align: center;
            position: relative;
        }
        .countdown-eyebrow {
            display: inline-block;
            background: rgba(240, 140, 62, 0.2);
            color: #FFB77A;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.08em;
        }
        .countdown-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .countdown-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 36px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .countdown-box {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            width: 90px;
            padding: 18px 10px;
            backdrop-filter: blur(4px);
        }
        .count-num {
            font-size: 36px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            color: #fff;
            line-height: 1.2;
        }
        .count-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== 咨询表单 ===== */
        .consult-section {
            background: var(--bg-white);
        }
        .consult-form {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 8px;
        }
        .form-control {
            height: 48px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(44, 95, 138, 0.2);
            background: var(--bg-body);
            font-size: 15px;
            color: var(--text-body);
            padding: 0 16px;
            transition: var(--transition);
        }
        .form-control::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
            background: #fff;
        }
        .form-error-msg {
            display: none;
            color: #dc3545;
            font-size: 13px;
            margin-bottom: 10px;
            padding: 8px 12px;
            background: rgba(220, 53, 69, 0.06);
            border-radius: 8px;
        }
        .form-success-msg {
            display: none;
            color: #198754;
            font-size: 13px;
            margin-bottom: 10px;
            padding: 8px 12px;
            background: rgba(25, 135, 84, 0.06);
            border-radius: 8px;
        }
        .privacy-note {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 14px;
            line-height: 1.6;
        }
        .consult-info {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            height: 100%;
        }
        .consult-info h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .consult-info ul {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .consult-info ul li {
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-secondary);
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .consult-info ul li i {
            color: var(--primary);
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }
        .consult-img {
            width: 100%;
            border-radius: var(--radius-md);
            margin-top: 16px;
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg-body);
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            margin-bottom: 24px;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 180px;
        }
        .news-body {
            padding: 24px 28px;
        }
        .news-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
        }
        .news-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .news-body h3 a {
            color: var(--text-body);
        }
        .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid rgba(44, 95, 138, 0.08);
            padding-top: 14px;
        }
        .news-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
        }
        .news-meta .read-more:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .news-empty {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px dashed rgba(44, 95, 138, 0.2);
            padding: 80px 20px;
            text-align: center;
            color: var(--text-muted);
        }
        .news-empty i {
            font-size: 44px;
            margin-bottom: 14px;
            color: #C0CDD9;
        }
        .news-empty p {
            margin: 0;
            font-size: 16px;
        }
        .more-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }
        .more-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .custom-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            background: #fff;
            box-shadow: 0 2px 8px rgba(44, 95, 138, 0.04);
            overflow: hidden;
        }
        .custom-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-body);
            padding: 18px 24px;
            background: #fff;
            border: none;
            position: relative;
            transition: var(--transition);
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: inset 3px 0 0 var(--primary), 0 0 0 4px rgba(44, 95, 138, 0.1);
        }
        .custom-accordion .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.2s;
        }
        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .custom-accordion .accordion-body {
            padding: 18px 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            background: #fff;
            border-top: 1px solid rgba(44, 95, 138, 0.06);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding-top: 64px;
        }
        .footer-top {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .site-footer p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer ul a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .site-footer ul li i {
            margin-right: 8px;
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section-padding {
                padding: 70px 0;
            }
            .hero-section {
                padding: 60px 0 50px;
                text-align: center;
            }
            .hero-content {
                margin-bottom: 40px;
            }
            .hero-subtitle {
                margin: 0 auto 28px;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-stats .col-4 {
                text-align: center;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 16px;
            }
            .nav-cta .btn {
                display: block;
                width: 100%;
            }
            .custom-navbar .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-card);
                padding: 20px;
                margin-top: 12px;
                border: 1px solid var(--border-color);
            }
            .custom-navbar .nav-link {
                padding: 12px 8px !important;
                border-bottom: 1px solid rgba(44, 95, 138, 0.06);
            }
            .custom-navbar .nav-link:last-of-type {
                border-bottom: none;
            }
            .custom-navbar .nav-link::after {
                display: none;
            }
            .tier-col {
                margin-top: 0 !important;
                margin-bottom: 24px;
            }
            .countdown-section {
                background-attachment: scroll;
            }
            .compare-table th:first-child,
            .compare-table td:first-child {
                position: sticky;
                left: 0;
                z-index: 2;
                background: #fff;
            }
            .compare-table thead th:first-child {
                background: var(--primary-light);
                z-index: 3;
            }
            .consult-info {
                margin-top: 24px;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 56px 0;
            }
            .hero-title {
                font-size: 32px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .tier-card {
                padding: 24px 20px;
            }
            .countdown-item {
                width: 70px;
                padding: 14px 8px;
            }
            .count-num {
                font-size: 28px;
            }
            .news-body {
                padding: 20px;
            }
            .news-img {
                min-height: 140px;
            }
            .consult-form,
            .consult-info {
                padding: 24px 20px;
            }
            .compare-table-wrap {
                padding: 10px;
            }
            .compare-table th,
            .compare-table td {
                padding: 12px 14px;
                font-size: 14px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .countdown-box {
                gap: 8px;
            }
            .countdown-item {
                width: 62px;
                padding: 12px 6px;
            }
            .count-num {
                font-size: 24px;
            }
            .count-label {
                font-size: 12px;
            }
            .footer-top .row>[class*="col-"] {
                margin-bottom: 28px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .news-card .row {
                display: block;
            }
            .news-card .col-md-4,
            .news-card .col-md-8 {
                width: 100%;
            }
            .news-img {
                min-height: 160px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2C5F8A;
            --primary-dark: #1F4564;
            --primary-light: #EAF1F8;
            --accent: #F08C3E;
            --accent-dark: #D9782A;
            --accent-light: #FEF1E6;
            --bg: #F6F8FB;
            --bg-warm: #FAF7F2;
            --white: #FFFFFF;
            --text-dark: #233242;
            --text-body: #3E4D5E;
            --text-muted: #5A6B7C;
            --text-light: #8A99A8;
            --border: rgba(44, 95, 138, 0.12);
            --border-accent: rgba(240, 140, 62, 0.45);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-card: 0 8px 24px rgba(44, 95, 138, 0.08);
            --shadow-hover: 0 14px 34px rgba(44, 95, 138, 0.14);
            --shadow-btn: 0 4px 14px rgba(240, 140, 62, 0.28);
            --transition: all 0.3s ease;
            --font-stack: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 16px;
        }

        h1 { font-size: 34px; font-weight: 800; }
        h2 { font-size: 28px; font-weight: 800; }
        h3 { font-size: 20px; font-weight: 700; }
        h4 { font-size: 18px; font-weight: 700; }

        p {
            margin: 0 0 1.2em;
            color: var(--text-body);
        }

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

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

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

        ul, ol {
            padding-left: 1.4em;
            margin-bottom: 1em;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Bootstrap 5 覆盖 ===== */
        :root {
            --bs-primary: #2C5F8A;
            --bs-link-color: #2C5F8A;
            --bs-body-font-family: var(--font-stack);
        }

        .btn {
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1.5;
            transition: var(--transition);
            border: 2px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

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

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

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 140, 62, 0.35);
        }

        .btn-primary-custom {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff !important;
        }

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

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

        .btn-outline-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }

        .card {
            border: none;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            background: var(--white);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .badge {
            border-radius: var(--radius-sm);
            font-weight: 600;
            padding: 6px 12px;
            font-size: 13px;
        }

        .form-control {
            border-radius: var(--radius-md);
            border: 1px solid rgba(44, 95, 138, 0.2);
            padding: 12px 16px;
            height: 48px;
            font-size: 15px;
            background: var(--white);
            color: var(--text-dark);
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
        }

        .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
            font-size: 14px;
        }

        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--text-light);
            content: "›";
            padding: 0 8px;
        }

        .breadcrumb-item a {
            color: var(--primary);
        }

        .breadcrumb-item.active {
            color: var(--text-light);
        }

        .accordion-button {
            border-radius: var(--radius-md) !important;
            background: var(--bg);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            padding: 18px 22px;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: inset 0 -1px 0 var(--border);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.12);
        }

        .accordion-item {
            border: none;
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            background: var(--bg);
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(44, 95, 138, 0.05);
        }

        .accordion-body {
            padding: 18px 22px 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            background: var(--white);
            border-left: 3px solid var(--primary);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        /* ===== 导航栏 ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid rgba(44, 95, 138, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(44, 95, 138, 0.04);
        }

        .custom-navbar {
            padding: 0;
            min-height: 72px;
            background: var(--white);
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-dark);
            padding: 0;
            margin: 0;
        }

        .custom-navbar .navbar-brand:hover {
            text-decoration: none;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary-light);
            border-radius: 10px;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .custom-navbar .navbar-nav {
            gap: 4px;
            margin-left: 48px;
        }

        .custom-navbar .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .custom-navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(44, 95, 138, 0.04);
            text-decoration: none;
        }

        .custom-navbar .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .custom-navbar .nav-link:hover::after {
            width: 32px;
        }

        .custom-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }

        .custom-navbar .nav-link.active::after {
            width: 32px;
        }

        .nav-cta .btn-accent {
            min-height: 44px;
            padding: 10px 24px;
            font-size: 15px;
        }

        .navbar-toggler {
            border: 2px solid var(--border);
            border-radius: 8px;
            padding: 6px 12px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
        }

        .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 22px;
            height: 2px;
            background: var(--primary);
            display: block;
            transition: var(--transition);
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            width: 22px;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }

        .navbar-toggler-icon::before { top: -7px; }
        .navbar-toggler-icon::after { top: 7px; }

        /* ===== 文章页 Banner / 面包屑 ===== */
        .article-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #3B74A6 100%);
            padding: 56px 0 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: 20%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

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

        .article-banner .breadcrumb {
            margin-bottom: 24px;
        }

        .article-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.8);
        }

        .article-banner .breadcrumb-item a:hover {
            color: #fff;
        }

        .article-banner .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.6);
        }

        .article-banner .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }

        .article-banner h1 {
            color: #fff;
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            max-width: 860px;
            margin: 0;
        }

        .article-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .article-banner .banner-meta i {
            margin-right: 6px;
            opacity: 0.85;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 40px;
        }

        .article-layout {
            max-width: 768px;
            margin: 0 auto;
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 44px 48px 36px;
            margin-top: -28px;
            position: relative;
            z-index: 5;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body p {
            margin-bottom: 1.4em;
            color: var(--text-body);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin-top: 36px;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-top: 28px;
            margin-bottom: 14px;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin-top: 22px;
            margin-bottom: 12px;
        }

        .article-body ul {
            padding-left: 1.6em;
            margin-bottom: 1.4em;
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            color: var(--text-dark);
            font-size: 15px;
        }

        .article-body code {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 2px 8px;
            font-family: "SF Mono", Consolas, monospace;
            font-size: 14px;
            color: var(--primary-dark);
        }

        .article-body a {
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        /* ===== 文章标签区 ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(44, 95, 138, 0.08);
        }

        .article-tags .tag-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
            margin-right: 4px;
        }

        .article-tags a {
            display: inline-block;
            padding: 6px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            transition: var(--transition);
        }

        .article-tags a:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ===== 文章操作区 ===== */
        .article-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(44, 95, 138, 0.08);
        }

        .article-actions .btn {
            min-height: 46px;
        }

        /* ===== 内容未找到 ===== */
        .not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg);
            border-radius: var(--radius-lg);
        }

        .not-found i {
            font-size: 52px;
            color: var(--text-light);
            margin-bottom: 16px;
            display: block;
        }

        .not-found p {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

        .not-found .btn {
            display: inline-flex;
        }

        /* ===== 相关推荐区 ===== */
        .related-section {
            padding: 70px 0 80px;
            background: var(--bg);
        }

        .related-section .section-heading {
            text-align: center;
            margin-bottom: 44px;
        }

        .related-section .section-heading h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .related-section .section-heading p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 480px;
            margin: 0 auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img-wrap {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--primary-light);
            position: relative;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .related-card .card-body {
            padding: 24px 24px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-card .card-footer {
            background: transparent;
            border-top: 1px solid rgba(44, 95, 138, 0.07);
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .related-card .card-footer .date {
            font-size: 13px;
            color: var(--text-light);
        }

        .related-card .card-footer a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .related-card .card-footer a:hover {
            text-decoration: underline;
        }

        .related-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(240, 140, 62, 0.35);
            z-index: 2;
        }

        /* ===== CTA 横幅 ===== */
        .article-cta {
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            max-width: 768px;
            margin: 40px auto 0;
            border: 1px solid rgba(44, 95, 138, 0.12);
        }

        .article-cta .cta-text h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 4px;
        }

        .article-cta .cta-text p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .article-cta .btn {
            flex-shrink: 0;
            min-height: 48px;
            padding: 12px 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 0;
            margin-top: 0;
        }

        .site-footer .footer-top {
            padding-bottom: 40px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .site-footer p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 360px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

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

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

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }

        .site-footer ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            text-align: center;
        }

        .site-footer .footer-bottom p {
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
            margin: 0;
            text-align: center;
            max-width: none;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .custom-navbar {
                min-height: 64px;
            }

            .custom-navbar .navbar-brand {
                font-size: 18px;
            }

            .custom-navbar .navbar-collapse {
                background: var(--white);
                padding: 20px;
                border-radius: var(--radius-lg);
                margin-top: 12px;
                box-shadow: var(--shadow-card);
                border: 1px solid var(--border);
            }

            .custom-navbar .navbar-nav {
                margin-left: 0;
                gap: 2px;
            }

            .custom-navbar .nav-link {
                padding: 12px 16px;
                font-size: 15px;
            }

            .nav-cta {
                margin-top: 12px;
            }

            .nav-cta .btn-accent {
                width: 100%;
            }

            .article-banner {
                padding: 44px 0 40px;
            }

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

            .article-card {
                padding: 32px 28px;
            }

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

            .article-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 26px;
            }

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

        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .article-main {
                padding: 40px 0 30px;
            }

            .article-card {
                padding: 24px 20px;
                margin-top: -20px;
            }

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

            .article-banner .banner-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-body {
                font-size: 15px;
                line-height: 1.85;
            }

            .related-section {
                padding: 50px 0 60px;
            }

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

            .site-footer {
                padding-top: 44px;
            }

            .site-footer .footer-top {
                padding-bottom: 28px;
            }
        }

        @media (max-width: 576px) {
            h1 { font-size: 28px; }
            h2 { font-size: 24px; }

            .article-banner {
                padding: 36px 0 32px;
            }

            .article-banner h1 {
                font-size: 22px;
            }

            .article-card {
                padding: 20px 16px;
                border-radius: 12px;
            }

            .article-tags {
                gap: 8px;
            }

            .article-tags a {
                font-size: 12px;
                padding: 5px 14px;
            }

            .article-actions {
                flex-direction: column;
            }

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

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

            .site-footer {
                text-align: left;
            }

            .site-footer .footer-bottom p {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2C5F8A;
            --primary-dark: #234F73;
            --primary-darker: #1D3D58;
            --accent: #F08C3E;
            --accent-dark: #D9772A;
            --bg: #F6F8FB;
            --white: #FFFFFF;
            --text: #233242;
            --text-secondary: #5A6B7C;
            --text-muted: #8A99A8;
            --border: rgba(44, 95, 138, 0.12);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 4px;
            --shadow: 0 8px 24px rgba(44, 95, 138, 0.08);
            --shadow-hover: 0 14px 34px rgba(44, 95, 138, 0.14);
            --font-stack: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --bs-primary: var(--primary);
            --bs-body-font-family: var(--font-stack);
            --bs-link-color: var(--primary);
            --bs-link-hover-color: var(--primary-darker);
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-darker);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-top: 0;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
            color: var(--text);
        }
        ul,
        ol {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
        }

        /* ===== Bootstrap 覆盖 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 16px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
        }
        .btn:hover {
            text-decoration: none;
            transform: translateY(0);
        }
        .btn:active {
            transform: translateY(2px);
        }
        .btn-accent {
            background-color: var(--accent);
            border-color: var(--accent);
            color: #fff !important;
            box-shadow: 0 6px 16px rgba(240, 140, 62, 0.25);
        }
        .btn-accent:hover {
            background-color: var(--accent-dark) !important;
            border-color: var(--accent-dark) !important;
            color: #fff !important;
            box-shadow: 0 10px 22px rgba(240, 140, 62, 0.35);
            transform: translateY(-2px);
        }
        .btn-accent:focus {
            box-shadow: 0 0 0 4px rgba(240, 140, 62, 0.2) !important;
        }
        .btn-outline-primary {
            background-color: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background-color: rgba(44, 95, 138, 0.08);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }
        .btn-outline-primary:focus {
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
        }
        .badge {
            font-weight: 500;
            border-radius: var(--radius-sm);
            font-size: 12px;
            padding: 4px 10px;
        }
        .card {
            border: 0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .form-control {
            height: 48px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 15px;
            color: var(--text);
            background-color: #fff;
            padding: 0 16px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
            outline: none;
        }
        .accordion-button {
            background-color: transparent;
            border: 0;
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            border-radius: 0 !important;
            box-shadow: none !important;
        }
        .accordion-button:focus {
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background-color: transparent;
            color: var(--primary);
        }
        .accordion-button::after {
            transition: transform 0.2s ease;
            filter: grayscale(1) opacity(0.6);
        }
        .accordion-item {
            background-color: #f9fbfd;
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-item:last-child {
            margin-bottom: 0;
        }
        .accordion-body {
            padding: 0 20px 18px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(44, 95, 138, 0.05);
        }
        .custom-navbar {
            padding: 0;
            min-height: 72px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            text-decoration: none;
            padding: 0;
            letter-spacing: 0.5px;
        }
        .navbar-brand:hover {
            color: var(--text);
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 10px rgba(44, 95, 138, 0.2);
        }
        .navbar-nav {
            gap: 4px;
        }
        .navbar-nav .nav-link {
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            position: relative;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.5);
            transition: all 0.25s ease;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(44, 95, 138, 0.06);
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .nav-cta .btn {
            height: 42px;
            padding: 0 24px;
            font-size: 15px;
            border-radius: 10px;
        }
        .navbar-toggler {
            border: none;
            padding: 8px;
            color: var(--primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(44,95,138,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Hero 区域 ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #f0f5fa 0%, #eaf0f6 50%, #f6f8fb 100%);
            padding: 90px 0;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .hero-section .hero-bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            pointer-events: none;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(44, 95, 138, 0.08);
            color: var(--primary);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-section h1 {
            font-size: 44px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-section h1 span {
            color: var(--primary);
        }
        .hero-section .lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-info {
            display: flex;
            gap: 28px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-info-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .hero-info-item i {
            color: var(--primary);
            font-size: 16px;
        }
        .hero-image {
            position: relative;
            z-index: 2;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            margin-left: 30px;
        }
        .hero-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .hero-image .hero-image-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: 96px 0;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-bg-white {
            background: #fff;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }
        .section-title-left {
            text-align: left;
        }
        .section-subtitle-left {
            text-align: left;
            margin-left: 0;
        }

        /* ===== 适用场景 ===== */
        .scene-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 28px;
            height: 100%;
            border: 1px solid var(--border);
            transition: all 0.25s ease;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(44, 95, 138, 0.08);
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 16px;
        }
        .scene-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .scene-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 登录步骤 ===== */
        .login-step-row {
            display: flex;
            align-items: center;
            gap: 56px;
            padding: 64px 0;
        }
        .login-step-row:first-of-type {
            padding-top: 20px;
        }
        .login-step-row:last-of-type {
            padding-bottom: 20px;
        }
        .step-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            flex: 1;
        }
        .step-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .step-image:hover img {
            transform: scale(1.02);
        }
        .step-number-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 4px 12px rgba(240, 140, 62, 0.3);
        }
        .step-content {
            flex: 1;
        }
        .step-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            text-transform: none;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .step-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .step-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .step-list li {
            position: relative;
            padding-left: 26px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 6px;
        }
        .step-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent);
            font-size: 12px;
        }
        .step-divider {
            height: 1px;
            background: var(--border);
            margin: 0;
            border: none;
        }

        /* ===== 安全提醒 ===== */
        .security-section {
            background: linear-gradient(135deg, #f0f5fa 0%, #e8eef5 100%);
        }
        .security-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            border-left: 3px solid var(--primary);
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
            height: 100%;
        }
        .security-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .security-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(44, 95, 138, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .security-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .security-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-darker);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-section .btn-accent {
            font-size: 17px;
            padding: 0 40px;
            height: 52px;
            border-radius: 12px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 0;
            font-size: 14px;
        }
        .footer-top {
            padding: 64px 0 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            background: var(--accent);
            color: #fff;
            width: 40px;
            height: 40px;
            font-size: 18px;
        }
        .site-footer .footer-brand + p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .site-footer ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .custom-navbar {
                min-height: 64px;
            }
            .navbar-collapse {
                background: #fff;
                padding: 16px;
                border-radius: 0 0 12px 12px;
                box-shadow: 0 12px 24px rgba(44, 95, 138, 0.08);
                margin-top: 8px;
            }
            .navbar-nav {
                gap: 4px;
            }
            .navbar-nav .nav-link {
                padding: 12px 14px;
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
            .nav-cta {
                margin-top: 12px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                height: 48px;
            }
            .hero-section {
                padding: 64px 0;
            }
            .hero-section h1 {
                font-size: 36px;
            }
            .hero-image {
                margin-left: 0;
                margin-top: 36px;
            }
            .section {
                padding: 72px 0;
            }
            .login-step-row {
                flex-direction: column;
                gap: 28px;
                padding: 40px 0;
            }
            .login-step-row:nth-of-type(even) {
                flex-direction: column;
            }
            .step-content {
                text-align: left;
                padding: 0;
            }
            .section-title {
                font-size: 28px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-section h1 {
                font-size: 30px;
            }
            .hero-section .lead {
                font-size: 15px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .btn {
                width: 100%;
            }
            .security-card {
                padding: 20px;
            }
            .footer-top {
                padding: 40px 0 24px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-section {
                padding: 48px 0;
            }
            .hero-section h1 {
                font-size: 27px;
                line-height: 1.35;
            }
            .hero-info {
                gap: 16px;
            }
            .login-step-row {
                padding: 28px 0;
                gap: 20px;
            }
            .step-content h3 {
                font-size: 20px;
            }
            .scene-card {
                padding: 20px;
            }
            .step-image img {
                aspect-ratio: 4/3;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2C5F8A;
            --primary-dark: #1D405F;
            --primary-light: #E8F0F7;
            --accent: #F08C3E;
            --accent-dark: #D97A2B;
            --body-bg: #F6F8FB;
            --white: #FFFFFF;
            --text: #233242;
            --text-secondary: #5A6B7C;
            --text-muted: #8A99A8;
            --border: rgba(44, 95, 138, 0.12);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 4px;
            --shadow-card: 0 8px 24px rgba(44, 95, 138, 0.08);
            --shadow-hover: 0 14px 34px rgba(44, 95, 138, 0.14);
            --section-spacing: 90px;
            --bs-primary: #2C5F8A;
            --bs-link-color: #2C5F8A;
            --bs-body-font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .section-block {
            padding: var(--section-spacing) 0;
        }
        .bg-soft {
            background: var(--body-bg);
        }
        .section-head {
            margin-bottom: 48px;
            text-align: center;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.4;
            position: relative;
            display: inline-block;
        }
        .section-head h2::after {
            content: '';
            display: block;
            width: 52px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin: 10px auto 0;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto;
        }
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(44, 95, 138, 0.06);
        }
        .custom-navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
        }
        .navbar-brand:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }
        .navbar-nav {
            align-items: center;
            gap: 4px;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 16px;
            border-bottom: 2px solid transparent;
            margin-bottom: -2px;
            transition: all .2s ease;
            border-radius: 0;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            text-decoration: none;
            border-bottom-color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--accent);
        }
        .nav-cta .btn {
            min-width: 120px;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            transition: all .25s ease;
            box-shadow: 0 4px 12px rgba(240, 140, 62, 0.2);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(240, 140, 62, 0.3);
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-primary {
            background: var(--white);
            border: 1.5px solid var(--primary);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: all .25s ease;
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(44, 95, 138, 0.25);
        }
        .btn-outline-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-lg {
            padding: 14px 34px;
            border-radius: 12px;
            font-size: 16px;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 12px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(44, 95, 138, 0.15);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(35, 50, 66, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .category-hero {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(232, 240, 247, 0.9) 100%), url('/assets/images/backpic/back-1.webp') right center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .hero-overline {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 6px;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .category-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 18px;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
        }
        .hero-actions .btn {
            margin-right: 12px;
            min-width: 140px;
        }
        .hero-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
            border: 1px solid rgba(44, 95, 138, 0.06);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .scenario-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 30px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--accent);
            height: 100%;
            position: relative;
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .quote-icon {
            width: 40px;
            height: 40px;
            background: rgba(240, 140, 62, 0.12);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
            margin-bottom: 16px;
        }
        .scenario-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .scenario-card p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .step-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: all .3s ease;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 18px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .step-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .promo-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: none;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .promo-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .promo-card .card-img-top {
            height: 200px;
            object-fit: cover;
            border-top-left-radius: var(--radius-lg);
            border-top-right-radius: var(--radius-lg);
        }
        .promo-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .promo-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .promo-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .promo-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }
        .promo-card .btn {
            margin-top: auto;
            align-self: center;
        }
        .faq-section .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(44, 95, 138, 0.04);
        }
        .faq-section .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 18px 22px;
            background: var(--white);
            box-shadow: none !important;
            transition: background .25s ease;
        }
        .faq-section .accordion-button:hover {
            background: var(--primary-light);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            border-left: 3px solid var(--accent);
            border-radius: 12px 12px 0 0;
        }
        .faq-section .accordion-button::after {
            background-size: 14px;
            transition: transform .2s ease;
        }
        .faq-section .accordion-body {
            padding: 0 22px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        .cta-section {
            background: var(--primary-dark);
            color: #fff;
            padding: 80px 0;
            text-align: center;
            position: relative;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-accent {
            min-width: 180px;
            font-size: 16px;
            padding: 14px 34px;
        }
        .cta-section .btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            padding: 14px 34px;
            border-radius: var(--radius-md);
            font-weight: 600;
            margin-left: 12px;
            transition: all .25s ease;
        }
        .cta-section .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
        }
        .footer-top {
            padding: 60px 0 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 15px;
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, 0.7);
        }
        .site-footer ul a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 991px) {
            .section-block {
                padding: 70px 0;
            }
            .category-hero {
                padding: 70px 0;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .navbar-collapse {
                background: var(--white);
                border-radius: 12px;
                padding: 18px;
                border: 1px solid var(--border);
                margin-top: 14px;
                box-shadow: var(--shadow-card);
            }
            .navbar-nav {
                align-items: flex-start;
                gap: 0;
            }
            .navbar-nav .nav-link {
                width: 100%;
                padding: 12px 8px;
                border-bottom: 1px solid var(--border);
                margin-bottom: 0;
            }
            .navbar-nav .nav-link.active {
                background: var(--primary-light);
                border-radius: 8px;
                border-bottom: 1px solid var(--border);
            }
            .nav-cta {
                width: 100%;
                margin-top: 14px;
            }
            .nav-cta .btn {
                width: 100%;
                display: block;
                text-align: center;
            }
            .hero-actions .btn {
                min-width: 120px;
            }
        }
        @media (max-width: 767px) {
            .section-block {
                padding: 56px 0;
            }
            .category-hero {
                padding: 56px 0;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 15px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
        }
        @media (max-width: 575px) {
            .category-hero h1 {
                font-size: 28px;
            }
            .hero-actions .btn {
                display: block;
                width: 100%;
                margin-bottom: 12px;
                margin-right: 0;
            }
            .hero-actions .btn:last-child {
                margin-bottom: 0;
            }
            .feature-card {
                padding: 20px 18px;
            }
            .scenario-card {
                padding: 24px 20px;
            }
            .promo-card .card-body {
                padding: 20px 18px;
            }
            .cta-section {
                padding: 56px 0;
            }
        }