/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1B5DAF;
            --primary-hover: #154A8A;
            --secondary: #2E86DE;
            --accent: #E8B04B;
            --bg: #F4F7FB;
            --card-bg: #FFFFFF;
            --text-main: #223145;
            --text-secondary: #5A7186;
            --border: #E3EAF2;
            --error: #C94F4F;
            --success: #2E9E6B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 16px rgba(27, 93, 175, 0.05);
            --shadow-hover: 0 10px 30px rgba(27, 93, 175, 0.12);
            --transition: 0.3s ease;
        }

        /* ===== Reset 与基础 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            box-shadow: 0 6px 16px rgba(27, 93, 175, 0.25);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: #E8F1FC;
            color: var(--primary-hover);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: #E8F1FC;
            color: var(--primary-hover);
        }
        .btn:focus-visible {
            outline: 2px solid rgba(27, 93, 175, 0.3);
            outline-offset: 2px;
        }
        .btn-block {
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(27, 93, 175, 0.03);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .main-nav .nav-cta-btn {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 6px;
            font-weight: 600;
            margin-left: 8px;
        }
        .main-nav .nav-cta-btn:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        /* ===== Hero 区 ===== */
        .hero-section {
            background: #EDF3FA;
            padding: 96px 0 88px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: rgba(46, 134, 222, 0.08);
            top: -180px;
            right: -100px;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(27, 93, 175, 0.06);
            bottom: -80px;
            left: -60px;
            pointer-events: none;
        }
        .hero-section .grid-container {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            align-items: center;
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust i {
            color: var(--secondary);
            font-size: 14px;
        }
        .hero-media {
            text-align: center;
            position: relative;
        }
        .hero-media img {
            border-radius: 16px;
            box-shadow: 0 16px 48px rgba(27, 93, 175, 0.15);
            max-height: 420px;
            width: auto;
            margin: 0 auto;
        }
        .hero-media-placeholder {
            border-radius: 16px;
            background: #E0EBF7;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 64px;
            box-shadow: 0 16px 48px rgba(27, 93, 175, 0.08);
        }

        /* ===== 痛点-方案卡 ===== */
        .pain-section {
            padding: 96px 0;
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .pain-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
        }
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .pain-card-media {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 18px;
            background: #EDF2F8;
            height: 120px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .pain-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .pain-tag {
            display: inline-block;
            background: rgba(232, 176, 75, 0.15);
            color: #B87A1A;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }
        .pain-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .pain-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 成功数据区 ===== */
        .stats-section {
            background: #EDF2F8;
            padding: 88px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px 12px;
        }
        .stat-number {
            font-size: 52px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-unit {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary);
            margin-left: 2px;
        }
        .stat-divider {
            width: 10px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 12px;
        }

        /* ===== CTA Band ===== */
        .cta-section {
            background: linear-gradient(120deg, #1B5DAF 0%, #2E86DE 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            top: -140px;
            right: -60px;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin-bottom: 0;
        }
        .cta-inner .btn-light {
            flex-shrink: 0;
        }

        /* ===== 隐私信任条 ===== */
        .privacy-section {
            padding: 24px 0 0;
        }
        .privacy-bar {
            background: #EDF2F8;
            border-radius: 12px;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .privacy-bar i {
            color: var(--success);
            font-size: 20px;
        }
        .privacy-bar a {
            color: var(--primary);
            font-weight: 500;
            margin-left: auto;
        }
        .privacy-bar a:hover {
            color: var(--primary-hover);
        }

        /* ===== 最新资讯区 ===== */
        .news-section {
            padding: 96px 0 100px;
        }
        .news-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            background: var(--card-bg);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            margin-bottom: 16px;
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .news-thumb {
            flex: 0 0 160px;
            min-height: 112px;
            background: #EDF2F8;
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-thumb .thumb-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 36px;
        }
        .news-content {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-meta {
            display: flex;
            gap: 14px;
            align-items: center;
            margin-bottom: 6px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .news-cat {
            background: #E8F1FC;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 4px;
        }
        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-title a:hover {
            color: var(--primary);
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 8px;
        }
        .news-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }
        .news-link:hover {
            gap: 8px;
            color: var(--primary-hover);
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            border: 2px dashed var(--border);
            border-radius: 12px;
            background: #F9FBFD;
        }
        .news-empty i {
            font-size: 40px;
            color: var(--secondary);
            opacity: 0.5;
            margin-bottom: 12px;
        }
        .news-empty p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 64px 0 28px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }
        .site-footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .site-footer ul li a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--secondary);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 全局表单弹层 ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(20, 40, 60, 0.5);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 999;
            padding: 20px;
        }
        .modal-overlay.active {
            display: flex;
        }
        .modal-card {
            background: #fff;
            border-radius: 16px;
            max-width: 560px;
            width: 100%;
            padding: 36px;
            box-shadow: 0 24px 64px rgba(20, 40, 60, 0.2);
            position: relative;
            max-height: 90vh;
            overflow-y: auto;
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-secondary);
            cursor: pointer;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .modal-close:hover {
            background: #EDF2F8;
        }
        .modal-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .modal-card>p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .modal-card label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            display: block;
        }
        .modal-card input,
        .modal-card select,
        .modal-card textarea {
            width: 100%;
            height: 44px;
            border: 1px solid #D5DFE8;
            border-radius: 8px;
            padding: 0 12px;
            margin-bottom: 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            font-size: 14px;
            background: #fff;
        }
        .modal-card textarea {
            height: 90px;
            padding: 12px;
            resize: vertical;
        }
        .modal-card input:focus,
        .modal-card select:focus,
        .modal-card textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 93, 175, 0.12);
        }
        .modal-card .btn {
            width: 100%;
            margin-top: 8px;
        }
        .form-privacy {
            font-size: 12px;
            color: var(--text-secondary);
            text-align: center;
            margin-top: 14px;
            margin-bottom: 0;
            line-height: 1.5;
        }
        .form-success {
            text-align: center;
            padding: 40px 20px;
            display: none;
        }
        .form-success i {
            font-size: 52px;
            color: var(--success);
            margin-bottom: 16px;
        }
        .form-success p {
            font-size: 16px;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        /* ===== 移动端底部Tab ===== */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: #fff;
            border-top: 1px solid var(--border);
            z-index: 200;
            box-shadow: 0 -2px 8px rgba(27, 93, 175, 0.04);
            padding-bottom: env(safe-area-inset-bottom);
        }
        .mobile-tabbar .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: var(--text-secondary);
            font-size: 11px;
            transition: color var(--transition);
        }
        .mobile-tabbar .tab-item i {
            font-size: 20px;
            line-height: 1;
        }
        .mobile-tabbar .tab-item.active {
            color: var(--primary);
        }
        .mobile-tabbar .tab-item:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .hero-title {
                font-size: 34px;
            }
            .hero-section {
                padding: 64px 0 56px;
            }
            .main-nav ul {
                gap: 16px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .pain-section,
            .news-section {
                padding: 72px 0;
            }
            .stat-number {
                font-size: 42px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .news-thumb {
                flex: 0 0 120px;
            }
        }
        @media (max-width: 639px) {
            .site-header {
                position: relative;
            }
            .header-inner {
                height: 60px;
            }
            .main-nav {
                display: none;
            }
            .hero-section {
                padding: 48px 0 40px;
            }
            .hero-title {
                font-size: 28px;
                line-height: 1.3;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-trust {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                font-size: 12px;
            }
            .hero-media {
                margin-top: 32px;
            }
            .hero-media img {
                max-height: 240px;
            }
            .pain-section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .section-header p {
                font-size: 14px;
            }
            .pain-card {
                padding: 20px;
            }
            .stats-section {
                padding: 56px 0;
            }
            .stat-item {
                padding: 12px 8px;
            }
            .stat-number {
                font-size: 34px;
            }
            .cta-section {
                padding: 40px 0;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
            .cta-inner h2 {
                font-size: 22px;
            }
            .privacy-bar {
                padding: 12px 16px;
                font-size: 13px;
            }
            .privacy-bar a {
                margin-left: 0;
                width: 100%;
            }
            .news-section {
                padding: 56px 0 80px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                flex: 0 0 auto;
                height: 140px;
                width: 100%;
            }
            .news-content {
                padding: 16px;
            }
            .news-title {
                font-size: 15px;
            }
            .news-excerpt {
                font-size: 13px;
            }
            .site-footer {
                padding: 40px 0 100px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .mobile-tabbar {
                display: flex;
            }
            .modal-card {
                padding: 24px 20px;
            }
            .modal-card h3 {
                font-size: 18px;
            }
            .modal-card input,
            .modal-card select,
            .modal-card textarea {
                height: 40px;
                font-size: 14px;
            }
            body {
                padding-bottom: 60px;
            }
            .privacy-section {
                padding: 16px 0 0;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 26px;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-label {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #1B5DAF;
    --primary-hover: #154A8A;
    --accent: #2E86DE;
    --accent-gold: #E8B04B;
    --bg: #F4F7FB;
    --card-bg: #FFFFFF;
    --text-main: #223145;
    --text-secondary: #5A7186;
    --border-color: #E3EAF2;
    --error: #C94F4F;
    --success: #2E9E6B;
    --radius-card: 12px;
    --radius-btn: 8px;
    --shadow-card: 0 4px 16px rgba(27,93,175,0.05);
    --shadow-card-hover: 0 10px 30px rgba(27,93,175,0.12);
    --shadow-btn: 0 6px 16px rgba(27,93,175,0.25);
    --space-section: 80px;
    --space-section-mobile: 48px;
    --font-main: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; transition: all 0.25s ease; }

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

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

.grid-container {
    max-width: 1200px;
    padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.97);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 12px rgba(27,93,175,0.04);
    z-index: 1000;
}

.header-inner {
    max-width: 1200px;
    height: 68px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo { display: flex; align-items: center; flex-shrink: 0; }

.logo a { display: flex; align-items: center; gap: 10px; text-decoration: none; }

.logo-icon {
    width: 38px;
    height: 38px;
    background: var(--primary);
    border-radius: 10px;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 10px rgba(27,93,175,0.2);
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.2px;
    white-space: nowrap;
}

.main-nav ul {
    display: flex;
    gap: 4px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-nav ul li a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.25s ease;
    position: relative;
}

.main-nav ul li a:hover {
    color: var(--primary);
    background: #E8F1FC;
}

.main-nav ul li a.active {
    color: var(--primary);
    font-weight: 600;
}

.main-nav ul li a.active::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.nav-cta-btn {
    background: var(--primary) !important;
    color: #fff !important;
    padding: 9px 22px !important;
    border-radius: 8px;
    font-weight: 600;
    margin-left: 10px;
}

.nav-cta-btn:hover {
    background: var(--primary-hover) !important;
    color: #fff !important;
    box-shadow: var(--shadow-btn);
    transform: translateY(-1px);
}

.nav-cta-btn:focus,
.main-nav ul li a:focus {
    outline: 2px solid rgba(27,93,175,0.45);
    outline-offset: 2px;
}

/* ===== Mobile Tab Bar ===== */
.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: #fff;
    border-top: 1px solid var(--border-color);
    z-index: 1100;
    box-shadow: 0 -2px 12px rgba(27,93,175,0.04);
}

.tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 11px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.tab-item i { font-size: 18px; }

.tab-item.active { color: var(--primary); font-weight: 600; }

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

/* ===== Button ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(27,93,175,0.18);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-btn);
    transform: translateY(-2px);
    color: #fff;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 11px 27px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #E8F1FC;
    color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-link i { transition: transform 0.3s ease; }

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

.btn-link:hover i { transform: translateX(4px); }

.btn-primary:focus,
.btn-secondary:focus,
.btn-link:focus {
    outline: 2px solid rgba(27,93,175,0.45);
    outline-offset: 2px;
}

/* ===== Page Hero ===== */
.page-hero {
    position: relative;
    padding: 148px 0 88px;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(244,247,251,0.96) 0%, rgba(244,247,251,0.88) 55%, rgba(244,247,251,0.72) 100%);
}

.page-hero::after {
    content: '';
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(46,134,222,0.07);
    right: -120px;
    bottom: -140px;
    z-index: 0;
}

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

.hero-badge {
    display: inline-block;
    background: rgba(27,93,175,0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.page-hero h1 {
    font-size: 44px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.25;
    margin: 0 0 16px;
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-trust {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-secondary);
}

.hero-trust span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

/* ===== Section Head ===== */
.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 52px;
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.section-head h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-main);
    margin: 10px 0 14px;
    line-height: 1.3;
}

.section-head p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin: 0;
}

/* ===== Capability Section ===== */
.capability-section {
    padding: var(--space-section) 0;
    background: var(--bg);
}

.capability-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 24px;
}

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

.capability-img {
    height: 170px;
    overflow: hidden;
    position: relative;
}

.capability-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.capability-card:hover .capability-img img { transform: scale(1.04); }

.capability-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(20,40,60,0.02) 0%, rgba(20,40,60,0.08) 100%);
}

.capability-num {
    position: absolute;
    top: 16px;
    left: 16px;
    width: 42px;
    height: 42px;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(27,93,175,0.3);
    z-index: 2;
}

.capability-body {
    padding: 26px 28px 28px;
}

.capability-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 10px;
}

.capability-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 18px;
}

/* ===== Process Section ===== */
.process-section {
    padding: var(--space-section) 0;
    background: rgba(233,241,248,0.55);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 150px;
    max-width: 210px;
    text-align: center;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 28px 18px 24px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.step-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(27,93,175,0.08);
    color: var(--primary);
    font-size: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.process-step h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.65;
    margin: 0;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
    color: var(--primary);
    opacity: 0.35;
    font-size: 16px;
}

/* ===== FAQ Section ===== */
.faq-section {
    padding: var(--space-section) 0;
    background: var(--bg);
}

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

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.faq-item:hover { box-shadow: var(--shadow-card-hover); }

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 22px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    background: none;
    text-align: left;
    gap: 12px;
    transition: color 0.2s;
}

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

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

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-item.open .faq-answer { max-height: 600px; }

.faq-answer p {
    padding: 0 22px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

/* ===== CTA Band ===== */
.cta-section {
    padding: 0 0 var(--space-section);
    background: var(--bg);
}

.cta-inner {
    background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 16px;
    padding: 52px 32px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(27,93,175,0.18);
}

.cta-inner::before {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    top: -140px;
    right: -80px;
}

.cta-inner::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    bottom: -90px;
    left: -50px;
}

.cta-inner h2 {
    font-size: 27px;
    font-weight: 700;
    margin: 0 0 12px;
    color: #fff;
    position: relative;
    z-index: 1;
}

.cta-inner p {
    font-size: 15px;
    line-height: 1.75;
    opacity: 0.92;
    margin-bottom: 26px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary);
    padding: 12px 30px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
    position: relative;
    z-index: 1;
}

.btn-white:hover {
    background: #E8F1FC;
    color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.16);
}

.btn-white:focus {
    outline: 2px solid rgba(255,255,255,0.6);
    outline-offset: 3px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg);
    border-top: 1px solid var(--border-color);
    padding: 52px 0 24px;
}

.site-footer h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 14px;
}

.site-footer ul li {
    margin-bottom: 8px;
    font-size: 14px;
}

.site-footer ul li a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.site-footer ul li a:hover { color: var(--primary); }

.footer-brand .logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-top: 12px;
    max-width: 280px;
}

.footer-contact li {
    font-size: 14px;
    color: var(--text-secondary);
}

.footer-contact li i {
    color: var(--primary);
    margin-right: 6px;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    font-size: 13px;
    color: var(--text-secondary);
}

.footer-bottom p { margin: 0; }

.footer-bottom a { color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }

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

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20,40,60,0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: #fff;
    border-radius: 16px;
    max-width: 560px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 34px 32px 28px;
    position: relative;
    box-shadow: 0 20px 50px rgba(20,40,60,0.22);
    transform: translateY(8px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-card { transform: translateY(0); }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(27,93,175,0.08);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: rgba(27,93,175,0.16);
    color: var(--primary);
}

.modal-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--text-main);
}

.modal-card .modal-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 0 22px;
    line-height: 1.6;
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    height: 44px;
    border: 1px solid #D5DFE8;
    border-radius: var(--radius-btn);
    padding: 0 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-main);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-group textarea {
    height: 90px;
    padding-top: 10px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(27,93,175,0.12);
}

.modal-form .btn-primary {
    width: 100%;
    justify-content: center;
    margin-top: 6px;
}

.privacy-note {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 12px;
    line-height: 1.6;
}

.form-success {
    text-align: center;
    padding: 24px 0 12px;
}

.form-success i {
    font-size: 44px;
    color: var(--success);
    margin-bottom: 10px;
}

.form-success p {
    font-size: 15px;
    color: var(--text-main);
    margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1023.98px) {
    :root { --space-section: 56px; }

    body { padding-bottom: 60px; }

    .main-nav { display: none; }

    .mobile-tab-bar { display: flex; }

    .header-inner { height: 58px; }

    .site-header {
        box-shadow: 0 1px 8px rgba(27,93,175,0.04);
    }

    .page-hero { padding: 108px 0 56px; }

    .page-hero h1 { font-size: 34px; }

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

    .section-head { margin-bottom: 38px; }

    .process-step {
        min-width: 140px;
        max-width: 180px;
    }

    .step-arrow { padding-top: 54px; }
}

@media (max-width: 639.98px) {
    :root { --space-section: 48px; }

    .grid-container { padding: 0 16px; }

    .header-inner { padding: 0 16px; }

    .logo-text { font-size: 16px; }

    .logo-icon { width: 34px; height: 34px; font-size: 12px; }

    .page-hero { padding: 88px 0 42px; }

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

    .hero-subtitle { font-size: 15px; }

    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .hero-trust { gap: 10px 14px; margin-top: 18px; }

    .section-head h2 { font-size: 23px; }

    .capability-body { padding: 20px; }

    .capability-img { height: 140px; }

    .capability-body h3 { font-size: 18px; }

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

    .process-step { max-width: 100%; width: 100%; }

    .step-arrow {
        transform: rotate(90deg);
        padding: 4px 0;
    }

    .faq-question { padding: 15px 16px; font-size: 14px; }

    .faq-answer p { padding: 0 16px 16px; }

    .cta-inner { padding: 36px 20px; }

    .cta-inner h2 { font-size: 22px; }

    .cta-inner p { font-size: 14px; }

    .modal-card { padding: 26px 20px 22px; }

    .footer-bottom { flex-direction: column; gap: 4px; }

    .footer-bottom p { font-size: 13px; }
}

/* roulang page: article */
:root {
    --primary: #1B5DAF;
    --primary-dark: #154A8A;
    --primary-light: #E8F1FC;
    --secondary: #2E86DE;
    --accent: #E8B04B;
    --bg: #F4F7FB;
    --card-bg: #FFFFFF;
    --text-main: #223145;
    --text-sub: #5A7186;
    --border: #E3EAF2;
    --radius: 12px;
    --radius-btn: 8px;
    --shadow-card: 0 4px 16px rgba(27,93,175,0.05);
    --shadow-hover: 0 10px 30px rgba(27,93,175,0.12);
    --shadow-btn: 0 6px 16px rgba(27,93,175,0.25);
    --font-main: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
    --space-section: 80px;
    --success: #2E9E6B;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    margin: 0 0 12px;
}
p { margin: 0 0 16px; }
a { color: var(--primary); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.25rem; }
button, input, select, textarea { font-family: inherit; }

.grid-container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}
.section-block { padding: var(--space-section) 0; }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(27,93,175,0.04);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo a { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.02em;
}
.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.01em;
}
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 28px;
    margin: 0;
    padding: 0;
}
.main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-sub);
    padding: 8px 2px;
    position: relative;
    transition: color 0.25s ease;
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.3s ease;
    border-radius: 2px;
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after, .main-nav a:hover::after { transform: scaleX(1); }
.nav-cta-btn {
    display: inline-block;
    background: var(--primary);
    color: #fff !important;
    padding: 10px 22px !important;
    border-radius: var(--radius-btn);
    font-size: 14px !important;
    font-weight: 600 !important;
    transition: background 0.3s, box-shadow 0.3s, transform 0.2s;
    cursor: pointer;
}
.nav-cta-btn:hover {
    background: var(--primary-dark);
    color: #fff !important;
    box-shadow: var(--shadow-btn);
    transform: translateY(-1px);
}
.nav-cta-btn::after { display: none; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: var(--shadow-btn);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}
.btn-block { width: 100%; }
.btn:focus-visible {
    outline: 2px solid rgba(27,93,175,0.35);
    outline-offset: 2px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb-wrap {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}
.breadcrumb {
    font-size: 13px;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: #c3cede; }
.breadcrumb-cat { color: var(--text-sub); }
.breadcrumb .current {
    color: var(--text-main);
    max-width: 360px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---------- Article Hero ---------- */
.article-hero {
    position: relative;
    padding: 56px 0 48px;
    background-image: linear-gradient(90deg, rgba(237,243,250,0.95), rgba(244,247,251,0.88)), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border);
}
.article-head { max-width: 860px; margin: 0 auto; text-align: center; }
.article-cat {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.article-title {
    font-size: 42px;
    line-height: 1.25;
    margin: 0 0 20px;
}
.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--text-sub);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--secondary); }

/* ---------- Article Content ---------- */
.article-body-wrap {
    padding: 48px 0 64px;
}
.article-content {
    max-width: 860px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
}
.article-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 24px;
}
.article-content h2 {
    font-size: 28px;
    margin: 40px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.article-content h3 {
    font-size: 22px;
    margin: 32px 0 12px;
}
.article-content ul,
.article-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}
.article-content li { margin-bottom: 8px; line-height: 1.8; }
.article-content blockquote {
    margin: 24px 0;
    padding: 16px 24px;
    background: #fff;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-sub);
    font-size: 16px;
    box-shadow: var(--shadow-card);
}
.article-content img {
    border-radius: var(--radius);
    margin: 24px 0;
    box-shadow: var(--shadow-card);
}
.article-content a { font-weight: 500; text-decoration: underline; text-underline-offset: 4px; }
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
}
.article-content table th,
.article-content table td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}
.article-content table th { background: var(--bg); font-weight: 600; }

/* ---------- Article CTA ---------- */
.article-cta {
    padding: 32px 0 80px;
}
.article-cta-inner {
    max-width: 860px;
    margin: 0 auto;
    background: linear-gradient(120deg, #EAF1F9, #F7F9FC);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-card);
}
.article-cta-inner h3 {
    font-size: 24px;
    margin-bottom: 12px;
}
.article-cta-inner p {
    color: var(--text-sub);
    margin-bottom: 24px;
    font-size: 15px;
}

/* ---------- Related ---------- */
.related-section {
    padding: 64px 0 80px;
    background: #fff;
    border-top: 1px solid var(--border);
}
.related-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
}
.related-title {
    font-size: 28px;
    margin-bottom: 0;
}
.related-back {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.related-back i { transition: transform 0.25s ease; }
.related-back:hover i { transform: translateX(4px); }
.related-card {
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    height: 100%;
    margin-bottom: 24px;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: #d5e2f0;
}
.related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 0;
}
.related-card-body { padding: 20px 20px 16px; }
.related-card-body h3 {
    font-size: 17px;
    margin-bottom: 10px;
    line-height: 1.5;
}
.related-card-body h3:hover { color: var(--primary); }
.related-card-time {
    font-size: 13px;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ---------- Empty State ---------- */
.empty-section { padding: 48px 0 80px; }
.empty-state {
    text-align: center;
    padding: 80px 24px;
    background: #fff;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    max-width: 620px;
    margin: 48px auto;
    box-shadow: var(--shadow-card);
}
.empty-state i {
    font-size: 56px;
    color: #b8c9db;
    margin-bottom: 20px;
    display: block;
}
.empty-state h1 {
    font-size: 28px;
    margin-bottom: 8px;
}
.empty-state p {
    color: var(--text-sub);
    font-size: 15px;
    margin-bottom: 24px;
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--bg);
    border-top: 1px solid var(--border);
    padding: 48px 0 24px;
}
.footer-brand .logo-text { font-size: 22px; margin-bottom: 12px; display: block; }
.footer-brand p {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.7;
    margin: 12px 0 0;
    max-width: 320px;
}
.site-footer h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--text-main);
}
.site-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.site-footer ul li { margin-bottom: 8px; }
.site-footer ul a {
    font-size: 14px;
    color: var(--text-sub);
}
.site-footer ul a:hover { color: var(--primary); }
.footer-contact li {
    font-size: 14px;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact i { color: var(--secondary); width: 16px; }
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    border-top: 1px solid var(--border);
    margin-top: 32px;
    padding-top: 24px;
    font-size: 13px;
    color: var(--text-sub);
}
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--text-sub); }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(20,40,60,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-overlay.show { display: flex; }
.modal-card {
    position: relative;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    background: #fff;
    border-radius: 16px;
    padding: 36px;
    box-shadow: 0 24px 60px rgba(20,40,60,0.25);
}
.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg);
    border-radius: 50%;
    color: var(--text-sub);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}
.modal-close:hover { background: #E8EEF5; color: var(--text-main); }
.modal-card h3 { font-size: 24px; margin-bottom: 8px; }
.modal-card > p { color: var(--text-sub); font-size: 14px; margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-main);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    height: 44px;
    border: 1px solid #D5DFE8;
    border-radius: var(--radius-btn);
    padding: 0 12px;
    font-size: 14px;
    color: var(--text-main);
    background: #fff;
    transition: border 0.25s, box-shadow 0.25s;
}
.form-group textarea { height: auto; padding: 12px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(27,93,175,0.12);
}
.privacy-note {
    font-size: 12px;
    color: var(--text-sub);
    text-align: center;
    margin: 16px 0 0;
    line-height: 1.6;
}
.form-success {
    text-align: center;
    padding: 32px 0;
    display: none;
}
.form-success i {
    font-size: 56px;
    color: var(--success);
    margin-bottom: 16px;
}

/* ---------- Bottom Tab ---------- */
.bottom-tab {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    background: #fff;
    border-top: 1px solid var(--border);
    display: none;
    height: 60px;
    box-shadow: 0 -2px 12px rgba(27,93,175,0.06);
}
.bottom-tab .tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--text-sub);
    font-size: 11px;
    cursor: pointer;
    border: none;
    background: none;
    transition: color 0.2s ease;
    text-decoration: none;
}
.bottom-tab .tab-item i { font-size: 18px; }
.bottom-tab .tab-item.active { color: var(--primary); font-weight: 600; }
.bottom-tab .tab-item:hover { color: var(--primary); }

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
    .main-nav { display: none; }
    .bottom-tab { display: flex; }
    body { padding-bottom: 60px; }
    :root { --space-section: 56px; }
    .article-title { font-size: 32px; }
    .header-inner { height: 60px; }
    .logo-text { font-size: 18px; }
}
@media (max-width: 640px) {
    .section-block { padding: 48px 0; }
    .article-hero { padding: 36px 0; }
    .article-title { font-size: 26px; }
    .article-meta { gap: 10px; font-size: 13px; }
    .article-content { font-size: 15px; }
    .article-content p { font-size: 15px; line-height: 1.75; }
    .article-content h2 { font-size: 22px; }
    .article-content h3 { font-size: 18px; }
    .article-cta-inner { padding: 28px 20px; }
    .article-cta-inner h3 { font-size: 20px; }
    .related-title { font-size: 24px; }
    .related-card img { height: 160px; }
    .modal-card { padding: 28px 20px; }
    .grid-container { padding-left: 16px; padding-right: 16px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .footer-contact li { font-size: 13px; }
    .breadcrumb .current { max-width: 200px; }
}
@media (min-width: 1024px) {
    .bottom-tab { display: none; }
    body { padding-bottom: 0; }
}

/* roulang page: category2 */
:root {
            --color-primary: #1B5DAF;
            --color-primary-hover: #154A8A;
            --color-accent: #2E86DE;
            --color-gold: #E8B04B;
            --color-bg: #F4F7FB;
            --color-card: #FFFFFF;
            --color-text: #223145;
            --color-muted: #5A7186;
            --color-border: #E3EAF2;
            --color-error: #C94F4F;
            --color-success: #2E9E6B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 16px rgba(27, 93, 175, 0.05);
            --shadow-hover: 0 10px 30px rgba(27, 93, 175, 0.12);
            --shadow-btn: 0 6px 16px rgba(27, 93, 175, 0.25);
            --font-main: "PingFang SC", "Microsoft YaHei", "HarmonicOS Sans", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        body.fixed {
            overflow: hidden;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        h1,
        h2,
        h3 {
            line-height: 1.3;
            color: var(--color-text);
            font-weight: 700;
        }

        h1 {
            font-size: 40px;
            letter-spacing: -0.5px;
        }

        h2 {
            font-size: 30px;
            letter-spacing: -0.3px;
        }

        h3 {
            font-size: 20px;
        }

        /* ---------- 按钮 ---------- */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            padding: 13px 30px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            box-shadow: none;
        }

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

        .btn-primary:focus {
            outline: 2px solid rgba(27, 93, 175, 0.3);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-secondary:hover {
            background: #E8F1FC;
            color: var(--color-primary-hover);
        }

        .btn-secondary:focus {
            outline: 2px solid rgba(27, 93, 175, 0.3);
            outline-offset: 2px;
        }

        /* ---------- 顶部导航 ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(27, 93, 175, 0.03);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.5px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0;
        }

        .main-nav a {
            color: var(--color-muted);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 8px 0;
            line-height: 24px;
        }

        .main-nav a:hover {
            color: var(--color-primary);
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary);
        }

        .nav-cta-btn {
            background: var(--color-primary);
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: var(--transition);
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-hover);
            box-shadow: var(--shadow-btn);
            color: #fff !important;
        }

        /* ---------- 底部 Tab ---------- */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            height: 64px;
            box-shadow: 0 -4px 16px rgba(27, 93, 175, 0.05);
        }

        .bottom-tab-inner {
            display: flex;
            height: 100%;
            max-width: 600px;
            margin: 0 auto;
        }

        .bottom-tab a {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 11px;
            color: var(--color-muted);
            transition: color 0.2s;
            line-height: 1.2;
        }

        .bottom-tab a i {
            font-size: 18px;
            line-height: 1;
        }

        .bottom-tab a.active,
        .bottom-tab a:hover {
            color: var(--color-primary);
        }

        /* ---------- 页面 Hero ---------- */
        .page-hero {
            background: linear-gradient(135deg, rgba(237, 243, 250, 0.92), rgba(237, 243, 250, 0.98)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(27, 93, 175, 0.04);
            right: -120px;
            top: -120px;
            pointer-events: none;
        }

        .page-hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .page-hero h1 {
            font-size: 42px;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .page-hero .hero-sub {
            font-size: 17px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 640px;
            margin: 0 auto;
        }

        .page-hero .hero-badges {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .page-hero .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.75);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.4;
        }

        /* ---------- 支持入口区 ---------- */
        .support-entry {
            padding: 96px 0 80px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 32px;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--color-muted);
            max-width: 640px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.7;
        }

        .support-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

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

        .support-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: #E8F1FC;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: var(--transition);
        }

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

        .support-card:hover .support-icon i {
            color: #fff;
        }

        .support-icon i {
            font-size: 22px;
            color: var(--color-primary);
            transition: color 0.3s;
        }

        .support-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .support-card p {
            color: var(--color-muted);
            font-size: 15px;
            line-height: 1.7;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            font-weight: 600;
            font-size: 14px;
            color: var(--color-primary);
            transition: gap 0.2s;
        }

        .card-link i {
            font-size: 13px;
            transition: transform 0.2s;
        }

        .support-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ---------- FAQ 区 ---------- */
        .faq-section {
            padding: 0 0 96px;
            background: linear-gradient(180deg, var(--color-bg) 0%, #EDF3FA 100%);
        }

        .faq-section .grid-container {
            padding-top: 80px;
        }

        .faq-group {
            margin-bottom: 44px;
        }

        .faq-group-title {
            font-size: 21px;
            font-weight: 700;
            margin-bottom: 22px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            line-height: 1.4;
        }

        .accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 0;
            list-style: none;
        }

        .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
        }

        .accordion-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(27, 93, 175, 0.2);
        }

        .accordion-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            user-select: none;
            transition: color 0.2s;
            margin: 0;
        }

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

        .accordion-title .accordion-arrow {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: #E8F1FC;
            color: var(--color-primary);
            font-size: 15px;
            transition: all 0.3s;
        }

        .accordion-item.is-active .accordion-arrow {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
            box-sizing: content-box;
        }

        .accordion-item.is-active .accordion-content {
            padding-bottom: 20px;
        }

        .accordion-content p {
            color: var(--color-muted);
            font-size: 15px;
            line-height: 1.7;
            margin: 0;
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
        }

        /* ---------- 联系表单区 ---------- */
        .contact-section {
            padding: 0 0 96px;
        }

        .contact-form-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .contact-form-card h2 {
            font-size: 26px;
            margin-bottom: 8px;
        }

        .contact-form-card .form-desc {
            color: var(--color-muted);
            margin-bottom: 28px;
            font-size: 15px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .form-control {
            width: 100%;
            height: 44px;
            border: 1px solid #D5DFE8;
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 15px;
            background: #fff;
            color: var(--color-text);
            transition: border-color 0.2s, box-shadow 0.2s;
            box-shadow: none;
        }

        .form-control:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 93, 175, 0.12);
            outline: none;
        }

        textarea.form-control {
            height: auto;
            min-height: 110px;
            padding: 12px 14px;
            resize: vertical;
            line-height: 1.6;
        }

        select.form-control {
            appearance: auto;
            -webkit-appearance: auto;
        }

        .privacy-note {
            font-size: 12px;
            color: var(--color-muted);
            margin-top: 14px;
            line-height: 1.6;
        }

        .success-message {
            margin-top: 14px;
            padding: 12px 16px;
            background: #EAF7F0;
            border: 1px solid #CDEBD8;
            border-radius: 8px;
            color: var(--color-success);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.5;
        }

        .contact-info-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .contact-info-card img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-bottom: 1px solid var(--color-border);
        }

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

        .contact-info-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .contact-info-body p {
            color: var(--color-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .contact-info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin: 0 0 20px;
        }

        .contact-info-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text);
        }

        .contact-info-list i {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: #E8F1FC;
            color: var(--color-primary);
            font-size: 13px;
            flex-shrink: 0;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--color-bg);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-brand .logo-text {
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-top: 12px;
        }

        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

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

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

        .site-footer ul a {
            font-size: 14px;
            color: var(--color-muted);
            transition: color 0.2s;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
        }

        .footer-contact i {
            width: 20px;
            color: var(--color-primary);
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            margin-top: 32px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--color-muted);
            margin: 0;
        }

        .footer-bottom a {
            font-size: 13px;
            color: var(--color-muted);
        }

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

        /* ---------- 全局表单弹层 ---------- */
        .modal-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(20, 40, 60, 0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .modal-overlay.open {
            display: flex;
        }

        .modal-card {
            background: var(--color-card);
            border-radius: 16px;
            padding: 40px 36px 32px;
            max-width: 560px;
            width: 100%;
            box-shadow: 0 20px 60px rgba(20, 40, 60, 0.15);
            position: relative;
            max-height: 90vh;
            overflow-y: auto;
            animation: modalIn 0.3s ease;
        }

        @keyframes modalIn {
            from {
                opacity: 0;
                transform: translateY(20px) scale(0.98);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border: none;
            background: var(--color-bg);
            border-radius: 50%;
            font-size: 18px;
            color: var(--color-muted);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

        .modal-close:hover {
            background: #E8F1FC;
            color: var(--color-primary);
        }

        .modal-close:focus {
            outline: 2px solid rgba(27, 93, 175, 0.3);
        }

        .modal-card h3 {
            font-size: 24px;
            margin-bottom: 8px;
        }

        .modal-card>p {
            color: var(--color-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }

        .modal-card .btn-primary {
            width: 100%;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1023px) {
            .site-header {
                height: 60px;
            }

            .header-inner {
                height: 60px;
                padding: 0 16px;
            }

            .main-nav {
                display: none;
            }

            .logo-text {
                font-size: 18px;
            }

            .bottom-tab {
                display: block;
            }

            body {
                padding-bottom: 64px;
            }

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

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero .hero-sub {
                font-size: 16px;
            }

            .support-entry {
                padding: 64px 0 48px;
            }

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

            .faq-section .grid-container {
                padding-top: 56px;
            }

            .contact-section {
                padding-bottom: 64px;
            }

            .contact-form-card {
                padding: 28px 24px;
            }

            .site-footer {
                padding: 44px 0 24px;
            }
        }

        @media (max-width: 639px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }

            .logo-text {
                font-size: 17px;
            }

            .page-hero {
                padding: 44px 0 40px;
            }

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

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

            .page-hero .hero-badges span {
                font-size: 12px;
                padding: 4px 10px;
            }

            .support-entry {
                padding: 48px 0 40px;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .section-header h2 {
                font-size: 23px;
            }

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

            .support-card {
                padding: 24px 20px;
            }

            .support-card h3 {
                font-size: 18px;
            }

            .faq-section .grid-container {
                padding-top: 44px;
            }

            .faq-group-title {
                font-size: 19px;
            }

            .accordion-title {
                padding: 16px 18px;
                font-size: 15px;
            }

            .accordion-content {
                padding: 0 18px;
            }

            .contact-section {
                padding-bottom: 48px;
            }

            .contact-form-card {
                padding: 24px 18px;
            }

            .contact-form-card h2 {
                font-size: 22px;
            }

            .contact-info-card img {
                height: 160px;
            }

            .contact-info-body {
                padding: 20px;
            }

            .modal-card {
                padding: 32px 20px 24px;
            }
        }