/* roulang page: index */
:root {
            --primary: #1B6EF0;
            --primary-dark: #0F3B7A;
            --secondary: #12B3A8;
            --secondary-2: #4A9EFF;
            --accent: #F6A821;
            --bg-dark: #0B1526;
            --bg-card-dark: #101E33;
            --bg-light: #F4F7FB;
            --text-primary: #1E293B;
            --text-secondary: #5B6B83;
            --text-muted: #8A98AC;
            --border-line: #E4E9F0;
            --dark-text: #E8EEF7;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 8px rgba(15, 42, 80, 0.06);
            --shadow-hover: 0 6px 20px rgba(27, 110, 240, 0.14);
            --shadow-btn: 0 4px 20px rgba(27, 110, 240, 0.35);
            --transition: all 0.25s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-primary);
            background: #fff;
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        button,
        input {
            font-family: inherit;
        }

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

        .section {
            padding: 80px 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
            letter-spacing: 0.01em;
            margin: 0;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            margin: 8px 0 0;
        }

        .section-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .section-link:hover {
            color: var(--secondary);
            gap: 8px;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, #1B6EF0, #3B8BFF);
            color: #fff;
            box-shadow: 0 2px 10px rgba(27, 110, 240, 0.3);
        }

        .btn-primary-custom:hover {
            color: #fff;
            background: linear-gradient(135deg, #1B6EF0, #4A9EFF);
            box-shadow: var(--shadow-btn);
            transform: translateY(-2px);
        }

        .btn-outline-light-custom {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            color: #fff;
        }

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

        .btn-outline-primary-custom:hover {
            background: rgba(27, 110, 240, 0.06);
            color: var(--primary);
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        /* 徽章 */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            background: #EAF2FE;
            color: var(--primary);
            line-height: 1.4;
        }

        .badge-hot {
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
        }

        .badge-tech {
            background: #F1F4F9;
            color: var(--text-secondary);
            border-radius: var(--radius-pill);
            font-size: 12px;
            padding: 4px 12px;
            font-weight: 500;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(11, 21, 38, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: 72px;
        }

        .site-header .navbar {
            padding: 0;
            height: 72px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            padding: 0;
        }

        .site-header .navbar-brand svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .site-header .navbar-brand:hover {
            color: #fff;
        }

        .navbar-nav {
            gap: 8px;
        }

        .navbar-nav .nav-link {
            color: #C3D2E3;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
        }

        .navbar-nav .nav-link.active {
            color: #4A9EFF;
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary-2);
            border-radius: 2px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: 16px;
        }

        .search-form {
            position: relative;
            width: 200px;
        }

        .search-form input {
            width: 100%;
            height: 38px;
            border-radius: 8px;
            border: 1px solid transparent;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            padding: 0 36px 0 14px;
            font-size: 14px;
            transition: var(--transition);
        }

        .search-form input::placeholder {
            color: #7E90A9;
        }

        .search-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 110, 240, 0.25);
            background: rgba(255, 255, 255, 0.12);
        }

        .search-form button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #7E90A9;
            padding: 6px;
            cursor: pointer;
            line-height: 1;
        }

        .search-form button:hover {
            color: #4A9EFF;
        }

        .btn-login {
            color: #AEBFD9;
            font-size: 14px;
            font-weight: 500;
            background: none;
            border: none;
            padding: 8px 4px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-login:hover {
            color: #fff;
        }

        .btn-nav-cta {
            background: linear-gradient(135deg, #1B6EF0, #4A9EFF);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            box-shadow: 0 2px 12px rgba(27, 110, 240, 0.4);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-nav-cta:hover {
            box-shadow: 0 4px 20px rgba(27, 110, 240, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            background: none;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-toggler span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            margin: 5px 0;
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 100vh;
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #0B1526 0%, #0F3B7A 100%);
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 21, 38, 0.95) 0%, rgba(11, 21, 38, 0.7) 40%, rgba(15, 59, 122, 0.4) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .hero h1 .gradient-word {
            background: linear-gradient(90deg, #6CB2FF, #12B3A8);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 18px;
            line-height: 1.7;
            color: #B8CCE8;
            max-width: 540px;
            margin-bottom: 32px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .hero-img-wrap {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
            max-width: 520px;
            margin-left: auto;
            aspect-ratio: 4/3;
        }

        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 21, 38, 0.1) 0%, rgba(11, 21, 38, 0.4) 100%);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .stat-item .num {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 13px;
            color: #8FA3BF;
        }

        /* 信任条 */
        .trust-bar {
            background: #fff;
            padding: 32px 0;
            border-bottom: 1px solid var(--border-line);
        }

        .trust-bar .trust-label {
            font-size: 14px;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 20px;
            letter-spacing: 0.05em;
        }

        .trust-items {
            display: flex;
            justify-content: center;
            gap: 24px 48px;
            flex-wrap: wrap;
        }

        .trust-items span {
            font-size: 15px;
            color: #7A8BA6;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .trust-items span::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            flex-shrink: 0;
        }

        /* 解决方案 */
        .solutions {
            background: var(--bg-light);
        }

        .solution-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .solution-card .card-img {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }

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

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

        .solution-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 21, 38, 0.3));
        }

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

        .solution-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        .solution-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .solution-card .card-link:hover {
            gap: 8px;
            color: var(--secondary);
        }

        .solution-card .card-body .icon-wrap {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EAF2FE;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        /* 关于 */
        .about-section {
            background: #fff;
        }

        .about-img-wrap {
            position: relative;
            padding-bottom: 40px;
            padding-right: 0;
        }

        .about-img-main {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(15, 42, 80, 0.12);
            aspect-ratio: 4/3;
        }

        .about-img-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .about-info-card {
            position: absolute;
            right: 0;
            bottom: 0;
            background: var(--bg-dark);
            border-radius: 12px;
            padding: 24px 32px;
            display: flex;
            gap: 32px;
            box-shadow: 0 12px 40px rgba(11, 21, 38, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .about-info-card .info-num {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .about-info-card .info-label {
            font-size: 13px;
            color: #8FA3BF;
            margin-top: 2px;
        }

        .about-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
            list-style: none;
            padding: 0;
        }

        .about-list li {
            background: #F1F4F9;
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
        }

        /* 最新资讯 */
        .news-section {
            background: #fff;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            padding: 24px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-primary);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card h3 a {
            color: inherit;
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid #F0F2F5;
        }

        .news-card .news-meta a {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
        }

        .news-card .news-meta a:hover {
            color: var(--secondary);
        }

        .empty-text {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 15px;
            background: #FAFBFD;
            border-radius: 12px;
            border: 1px dashed var(--border-line);
            grid-column: 1 / -1;
        }

        /* 优势特色 */
        .features {
            background: var(--bg-light);
        }

        .feature-row {
            background: linear-gradient(135deg, #0B1526, #101E33);
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: 0 12px 40px rgba(11, 21, 38, 0.25);
            display: flex;
        }

        .feature-row .feature-img {
            flex: 0 0 42%;
            position: relative;
            min-height: 320px;
        }

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

        .feature-row .feature-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 50%, rgba(11, 21, 38, 0.5));
        }

        .feature-row:nth-child(even) .feature-img {
            order: 2;
        }

        .feature-row:nth-child(even) .feature-img::after {
            background: linear-gradient(270deg, transparent 50%, rgba(11, 21, 38, 0.5));
        }

        .feature-content {
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .feature-content .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(27, 110, 240, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .feature-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .feature-content p {
            font-size: 15px;
            color: #A8BBD6;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #C3D2E3;
        }

        .feature-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--secondary);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-section {
            background: #fff;
        }

        .accordion-custom {
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
        }

        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid #E8EDF4;
            background: transparent;
        }

        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-custom .accordion-header {
            background: transparent;
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }

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

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #F8FAFD;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border: none;
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #EAF2FE;
            line-height: 1;
            transition: transform 0.3s ease;
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .accordion-custom .accordion-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            background: #F8FAFD;
        }

        .accordion-custom .accordion-body {
            border-left: 3px solid var(--primary);
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, #0F3B7A, #0B1526 70%);
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }

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

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: #A8BBD6;
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-section .btn {
            box-shadow: 0 8px 32px rgba(27, 110, 240, 0.45);
        }

        /* 页脚 */
        .site-footer {
            background: #0B1526;
            padding: 60px 0 0;
            color: #8CA2BF;
        }

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

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand svg {
            width: 28px;
            height: 28px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #7E90A9;
            margin-bottom: 20px;
            max-width: 300px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid #2B3B52;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #7E90A9;
            transition: var(--transition);
        }

        .footer-social a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(27, 110, 240, 0.1);
        }

        .site-footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

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

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

        .site-footer .footer-links a {
            color: #8CA2BF;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .site-footer .footer-contact p {
            font-size: 14px;
            color: #8CA2BF;
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .site-footer .footer-contact p span {
            color: #B8CCE8;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: #60758E;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* 网格装饰 */
        .bg-grid {
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            .hero h1 {
                font-size: 42px;
            }
            .feature-content {
                padding: 32px;
            }
        }

        @media (max-width: 991px) {
            .site-header {
                height: auto;
                min-height: 72px;
            }
            .navbar-nav {
                gap: 4px;
                padding: 16px 0 8px;
            }
            .navbar-nav .nav-link {
                color: #C3D2E3;
                padding: 10px 16px !important;
            }
            .nav-right {
                margin-left: 0;
                padding: 0 16px 16px;
                flex-wrap: wrap;
                gap: 12px;
            }
            .search-form {
                width: 100%;
                margin-bottom: 8px;
            }
            .hero {
                padding: 140px 0 60px;
                min-height: auto;
            }
            .hero-img-wrap {
                margin: 32px auto 0;
                max-width: 100%;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .section {
                padding: 60px 0;
            }
            .feature-row {
                flex-direction: column;
            }
            .feature-row .feature-img {
                min-height: 220px;
                flex: none;
                width: 100%;
                order: 0 !important;
            }
            .feature-row .feature-img::after,
            .feature-row:nth-child(even) .feature-img::after {
                background: linear-gradient(180deg, transparent 50%, rgba(11, 21, 38, 0.6));
            }
            .feature-row:nth-child(even) .feature-img {
                order: 0 !important;
            }
            .about-info-card {
                padding: 16px 20px;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 767px) {
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-btns .btn {
                width: 100%;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section {
                padding: 48px 0;
            }
            .stat-item .num {
                font-size: 22px;
            }
            .hero-stats {
                justify-content: space-between;
            }
            .stat-item .label {
                font-size: 12px;
            }
            .trust-items {
                gap: 16px 24px;
            }
            .about-info-card {
                position: static;
                margin-top: 16px;
                width: 100%;
                justify-content: space-around;
            }
            .feature-content {
                padding: 24px;
            }
            .feature-content h3 {
                font-size: 20px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .btn {
                width: 100%;
            }
            .site-footer {
                padding-top: 40px;
            }
            .site-footer h5 {
                margin-top: 24px;
                margin-bottom: 14px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                padding: 120px 0 40px;
            }
            .hero h1 {
                font-size: 26px;
                line-height: 1.35;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-btns {
                flex-direction: column;
                gap: 12px;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
            }
            .section-head {
                gap: 16px;
            }
            .news-card {
                padding: 20px;
            }
            .solution-card .card-body {
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1B6EF0;
            --primary-dark: #0F3B7A;
            --secondary: #12B3A8;
            --secondary-2: #4A9EFF;
            --accent: #F6A821;
            --bg-dark: #0B1526;
            --bg-card-dark: #101E33;
            --bg-light: #F4F7FB;
            --text-primary: #1E293B;
            --text-secondary: #5B6B83;
            --text-muted: #8A98AC;
            --border-line: #E4E9F0;
            --dark-text: #E8EEF7;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(15, 42, 80, .06);
            --shadow-hover: 0 6px 20px rgba(27, 110, 240, .14);
            --transition: all .25s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            color: var(--text-primary);
            background: #fff;
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 21, 38, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .navbar {
            min-height: 72px;
            padding: 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff !important;
            letter-spacing: .01em;
            white-space: nowrap;
        }
        .navbar-brand svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 2px;
        }
        .navbar-nav .nav-link {
            color: #C3D2E3;
            font-size: 15px;
            font-weight: 600;
            padding: 24px 18px !important;
            position: relative;
            letter-spacing: .02em;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover {
            color: #fff !important;
        }
        .navbar-nav .nav-link.active {
            color: var(--secondary-2) !important;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 16px;
            left: 18px;
            right: 18px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            width: 44px;
            height: 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(74, 158, 255, .6);
        }
        .navbar-toggler span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .navbar-toggler[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .navbar-toggler[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .navbar-toggler[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .08);
            border: 1px solid transparent;
            border-radius: 8px;
            padding: 0 12px;
            transition: var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 110, 240, .22);
        }
        .search-form input {
            background: transparent;
            border: none;
            color: #fff;
            width: 170px;
            padding: 9px 0;
            font-size: 14px;
            outline: none;
        }
        .search-form input::placeholder {
            color: #7E90A9;
        }
        .search-form button {
            background: transparent;
            border: none;
            color: #AEBFD9;
            padding: 8px 0 8px 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .search-form button:hover {
            color: var(--secondary);
        }
        .nav-login {
            color: #AEBFD9;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 4px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-login:hover {
            color: #fff;
        }
        .btn-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary-2)) !important;
            border: none !important;
            color: #fff !important;
            border-radius: 8px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 18px rgba(27, 110, 240, .35);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 26px rgba(27, 110, 240, .45);
            color: #fff !important;
        }
        .page-breadcrumb {
            background: var(--bg-dark);
            padding: 36px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .page-breadcrumb .breadcrumb {
            margin: 0;
            font-size: 13px;
        }
        .page-breadcrumb .breadcrumb-item {
            color: #7E90A9;
        }
        .page-breadcrumb .breadcrumb-item a {
            color: #8CA2BF;
            transition: var(--transition);
        }
        .page-breadcrumb .breadcrumb-item a:hover {
            color: var(--secondary);
        }
        .page-breadcrumb .breadcrumb-item.active {
            color: var(--dark-text);
        }
        .page-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            color: #3A4A60;
        }
        .article-wrap {
            padding: 48px 0 80px;
            background: var(--bg-light);
            min-height: 70vh;
        }
        .article-main {
            background: #fff;
            border-radius: 16px;
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            padding: 44px;
            margin-bottom: 32px;
            transition: var(--transition);
        }
        .article-main:hover {
            box-shadow: var(--shadow-hover);
        }
        .article-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.4;
            letter-spacing: .01em;
            margin: 0 0 18px;
            color: var(--text-primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 28px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-line);
            font-size: 13px;
            color: var(--text-muted);
        }
        .meta-category {
            display: inline-block;
            background: #EAF2FE;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
        }
        .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-date svg {
            width: 15px;
            height: 15px;
            opacity: .7;
        }
        .meta-views {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-views svg {
            width: 15px;
            height: 15px;
            opacity: .7;
        }
        .article-body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-primary);
            max-width: 720px;
            word-break: break-word;
        }
        .article-body h2,
        .article-body h3 {
            color: var(--text-primary);
            font-weight: 700;
            margin-top: 1.6em;
            margin-bottom: .7em;
            line-height: 1.4;
        }
        .article-body h2 {
            font-size: 25px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .article-body h3 {
            font-size: 20px;
        }
        .article-body p {
            margin: 0 0 1.2em;
        }
        .article-body img {
            border-radius: 12px;
            margin: 1.2em 0;
            box-shadow: var(--shadow-card);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #F8FAFD;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            margin: 1.4em 0;
            font-size: 15px;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.4em;
            margin: 1em 0;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: .5em;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--secondary);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-line);
        }
        .tag-item {
            display: inline-block;
            background: #F1F4F9;
            color: var(--text-secondary);
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag-item:hover {
            background: #EAF2FE;
            color: var(--primary);
            border-color: var(--primary);
        }
        .not-found {
            background: #F8FAFD;
            border: 1px dashed var(--border-line);
            border-radius: 12px;
            padding: 60px 32px;
            text-align: center;
        }
        .not-found p {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary-2));
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 18px rgba(27, 110, 240, .3);
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(27, 110, 240, .4);
            color: #fff;
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background: rgba(27, 110, 240, .06);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            padding: 24px;
            margin-bottom: 24px;
            transition: var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .sidebar-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            padding-bottom: 14px;
            margin-bottom: 18px;
            position: relative;
        }
        .sidebar-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 38px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        .toc-list {
            list-style: none;
            padding: 0;
            margin: 0;
            max-height: 380px;
            overflow-y: auto;
        }
        .toc-list li {
            margin: 0;
        }
        .toc-list li a {
            display: block;
            padding: 7px 0 7px 14px;
            border-left: 2px solid var(--border-line);
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
            transition: var(--transition);
        }
        .toc-list li.level-3 a {
            padding-left: 30px;
            font-size: 13px;
        }
        .toc-list li a:hover,
        .toc-list li a.active {
            border-left-color: var(--primary);
            color: var(--primary);
            background: rgba(27, 110, 240, .03);
        }
        .toc-empty {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 0;
        }
        .hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .hot-list li {
            display: flex;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid #F1F4F9;
            transition: var(--transition);
        }
        .hot-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .hot-num {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #EAF2FE;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            border-radius: 8px;
        }
        .hot-list li:nth-child(-n+3) .hot-num {
            background: linear-gradient(135deg, var(--primary), var(--secondary-2));
            color: #fff;
        }
        .hot-info {
            flex: 1;
        }
        .hot-info h6 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin: 0 0 4px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .hot-info span {
            font-size: 12px;
            color: var(--text-muted);
        }
        .cta-card {
            background: linear-gradient(135deg, var(--primary-dark), var(--bg-dark));
            border-radius: 12px;
            padding: 30px 24px;
            color: #fff;
            box-shadow: 0 10px 30px rgba(11, 21, 38, .25);
            text-align: center;
        }
        .cta-card h5 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-card p {
            font-size: 14px;
            color: #B8CCE8;
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .related-section {
            margin-top: 16px;
            padding-top: 36px;
            border-top: 1px solid var(--border-line);
        }
        .related-section .section-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section .section-title::before {
            content: '';
            width: 6px;
            height: 24px;
            border-radius: 6px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
        }
        .related-card {
            display: flex;
            gap: 16px;
            background: #fff;
            border-radius: 12px;
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            padding: 16px;
            height: 100%;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .related-card img {
            width: 130px;
            height: 88px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .related-card h6 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin: 0 0 8px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .related-card h6 a {
            color: inherit;
            transition: var(--transition);
        }
        .related-card h6 a:hover {
            color: var(--primary);
        }
        .related-card span {
            font-size: 12px;
            color: var(--text-muted);
        }
        .site-footer {
            background: var(--bg-dark);
            padding: 64px 0 0;
            color: #8CA2BF;
        }
        .site-footer .footer-top {
            padding-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand svg {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 14px;
            color: #7E90A9;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 8px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: 1px solid #2B3B52;
            border-radius: 50%;
            color: #8CA2BF;
            transition: var(--transition);
        }
        .footer-social a:hover {
            border-color: var(--primary);
            color: var(--secondary);
            transform: translateY(-3px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #8CA2BF;
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .footer-contact svg {
            flex-shrink: 0;
            width: 16px;
            height: 16px;
            margin-top: 5px;
            color: var(--secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            font-size: 13px;
            color: #60758E;
        }
        .footer-bottom a {
            color: #7E90A9;
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1199px) {
            .search-form input {
                width: 130px;
            }
            .navbar-nav .nav-link {
                padding: 24px 14px !important;
            }
        }
        @media (max-width: 991px) {
            .navbar-collapse {
                background: var(--bg-dark);
                border-top: 1px solid rgba(255, 255, 255, .06);
                padding: 16px 0 20px;
                margin-top: 0;
            }
            .navbar-nav {
                gap: 0;
                margin-bottom: 12px;
            }
            .navbar-nav .nav-link {
                padding: 12px 0 !important;
                border-bottom: 1px solid rgba(255, 255, 255, .05);
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .nav-right {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .search-form input {
                width: 100%;
            }
            .nav-login {
                text-align: center;
                border: 1px solid rgba(255, 255, 255, .12);
                border-radius: 8px;
                padding: 10px;
            }
            .btn-cta {
                text-align: center;
            }
            .article-main {
                padding: 28px;
            }
            .article-title {
                font-size: 28px;
            }
            .article-wrap {
                padding: 40px 0 60px;
            }
        }
        @media (max-width: 767px) {
            .article-main {
                padding: 24px 20px;
                border-radius: 12px;
            }
            .article-title {
                font-size: 24px;
                line-height: 1.45;
            }
            .article-body {
                font-size: 16px;
                line-height: 1.85;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-meta {
                gap: 10px;
                margin-bottom: 20px;
            }
            .related-card {
                flex-direction: row;
                align-items: center;
            }
            .related-card img {
                width: 96px;
                height: 72px;
            }
            .page-breadcrumb {
                padding: 28px 0;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                display: flex;
                justify-content: center;
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .related-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }
            .related-card img {
                width: 100%;
                height: 160px;
            }
            .article-main {
                padding: 20px 16px;
            }
            .footer-top {
                gap: 32px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1B6EF0;
            --primary-dark: #0F3B7A;
            --secondary: #12B3A8;
            --secondary-2: #4A9EFF;
            --accent: #F6A821;
            --bg-dark: #0B1526;
            --bg-card-dark: #101E33;
            --bg-light: #F4F7FB;
            --text-primary: #1E293B;
            --text-secondary: #5B6B83;
            --text-muted: #8A98AC;
            --border-line: #E4E9F0;
            --text-on-dark: #E8EEF7;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 8px rgba(15, 42, 80, 0.06);
            --shadow-hover: 0 6px 20px rgba(27, 110, 240, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            position: relative;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 21, 38, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding: 0;
            width: 100%;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff !important;
            letter-spacing: 0.02em;
            padding: 0;
        }
        .navbar-brand svg {
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 4px;
        }
        .navbar-nav .nav-link {
            color: #C3D2E3;
            font-size: 15px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 8px;
            letter-spacing: 0.02em;
            position: relative;
            transition: color .25s ease, background .25s ease;
        }
        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-nav .nav-link.active {
            color: var(--secondary-2);
        }
        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 0 10px;
            height: 40px;
            width: 190px;
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 110, 240, 0.2);
        }
        .search-form input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 13px;
            width: 100%;
            padding: 0;
        }
        .search-form input::placeholder {
            color: #7E90A9;
        }
        .search-form button {
            background: transparent;
            border: none;
            color: #8FA3BF;
            padding: 4px;
            line-height: 1;
            cursor: pointer;
        }
        .search-form button:hover {
            color: #fff;
        }
        .btn-login {
            color: #AEBFD9;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 6px;
            border-radius: 6px;
            transition: color .25s ease;
        }
        .btn-login:hover {
            color: #fff;
        }
        .btn-nav-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary-2));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 8px;
            box-shadow: 0 4px 16px rgba(27, 110, 240, 0.3);
            transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
        }
        .btn-nav-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(27, 110, 240, 0.45);
            filter: brightness(1.05);
        }
        .navbar-toggler {
            border: none;
            padding: 6px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            background: transparent;
        }
        .navbar-toggler span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all .3s ease;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: none;
        }

        /* ===== 分类页 Hero ===== */
        .cat-hero {
            background: var(--bg-dark);
            padding: 84px 0 56px;
            position: relative;
            overflow: hidden;
            margin-top: 72px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.25;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 21, 38, 0.9) 0%, rgba(11, 21, 38, 0.6) 50%, rgba(11, 21, 38, 0.85) 100%);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat-hero-badge {
            display: inline-block;
            background: rgba(27, 110, 240, 0.2);
            border: 1px solid rgba(74, 158, 255, 0.3);
            color: var(--secondary-2);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .cat-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 14px;
        }
        .cat-hero-desc {
            font-size: 17px;
            color: #B8CCE8;
            line-height: 1.7;
            max-width: 480px;
            margin-bottom: 0;
        }
        .cat-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: flex-end;
        }
        .cat-hero-tags .tag-chip {
            display: inline-block;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: #C3D2E3;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: var(--radius-tag);
            transition: all .25s ease;
            backdrop-filter: blur(4px);
        }
        .cat-hero-tags .tag-chip:hover {
            color: #fff;
            border-color: var(--primary);
            background: rgba(27, 110, 240, 0.25);
            transform: translateY(-2px);
        }

        /* ===== 资讯服务介绍 ===== */
        .info-intro {
            padding: 80px 0;
            background: var(--bg-light);
        }
        .info-intro .section-label {
            display: inline-block;
            background: rgba(27, 110, 240, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .info-intro h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 18px;
        }
        .info-intro p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .info-intro .feature-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .info-intro .feature-list li {
            background: #fff;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-tag);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: all .25s ease;
        }
        .info-intro .feature-list li:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 2px 10px rgba(27, 110, 240, 0.08);
        }
        .info-intro .feature-list li::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .info-intro .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
            aspect-ratio: 16 / 11;
            background: #e8edf4;
        }
        .info-intro .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .info-intro .intro-image:hover img {
            transform: scale(1.02);
        }

        /* ===== 资讯服务亮点 ===== */
        .info-features {
            padding: 80px 0;
            background: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .section-label {
            display: inline-block;
            background: rgba(27, 110, 240, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.65;
        }
        .feature-card {
            background: #fff;
            border: 1px solid #EEF2F7;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity .25s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #dbe5f1;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(27, 110, 240, 0.12), rgba(18, 179, 168, 0.12));
            margin-bottom: 18px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 精选资讯 ===== */
        .info-picks {
            padding: 80px 0;
            background: var(--bg-light);
        }
        .pick-card {
            background: #fff;
            border: 1px solid #EEF2F7;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .pick-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #dbe5f1;
        }
        .pick-card .pick-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: #e8edf4;
        }
        .pick-card .pick-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .pick-card:hover .pick-image img {
            transform: scale(1.04);
        }
        .pick-card .pick-body {
            padding: 22px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .pick-card .pick-tag {
            display: inline-block;
            background: rgba(27, 110, 240, 0.09);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .pick-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .pick-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .pick-card .pick-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
            border-top: 1px solid #F1F4F9;
            padding-top: 12px;
            margin-bottom: 0;
        }
        .pick-more {
            text-align: center;
            margin-top: 36px;
        }
        .btn-outline-primary {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            transition: all .25s ease;
            display: inline-block;
        }
        .btn-outline-primary:hover {
            background: rgba(27, 110, 240, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== 资讯获取流程 ===== */
        .info-process {
            padding: 80px 0;
            background: #fff;
        }
        .process-step {
            text-align: center;
            padding: 28px 20px;
            border-radius: var(--radius-card);
            transition: all .25s ease;
            position: relative;
            background: #fff;
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            height: 100%;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #dbe5f1;
        }
        .process-step .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 14px rgba(27, 110, 240, 0.3);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .info-faq {
            padding: 80px 0;
            background: var(--bg-light);
        }
        .info-faq .accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .info-faq .accordion-item {
            background: #fff;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 1px 4px rgba(15, 42, 80, 0.04);
            transition: box-shadow .25s ease, border-color .25s ease;
        }
        .info-faq .accordion-item:hover {
            border-color: #d5e0ee;
            box-shadow: 0 4px 16px rgba(15, 42, 80, 0.08);
        }
        .info-faq .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: #fff;
            padding: 20px 24px;
            box-shadow: none;
            border-radius: var(--radius-card) !important;
            transition: color .25s ease;
        }
        .info-faq .accordion-button:hover {
            color: var(--primary);
        }
        .info-faq .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #F8FAFD;
            box-shadow: none;
        }
        .info-faq .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .info-faq .accordion-button::after {
            background: none;
            content: "+";
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform .3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .info-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background: none;
        }
        .info-faq .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            padding: 4px 24px 22px;
            background: #F8FAFD;
        }

        /* ===== CTA ===== */
        .info-cta {
            padding: 80px 0;
            background: linear-gradient(120deg, var(--primary-dark), var(--bg-dark) 60%, #0B1526);
            position: relative;
            overflow: hidden;
        }
        .info-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.2;
        }
        .info-cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .info-cta h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .info-cta p {
            font-size: 16px;
            color: #A9BEDB;
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .btn-cta-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary-2));
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 42px;
            border-radius: var(--radius-btn);
            box-shadow: 0 6px 28px rgba(27, 110, 240, 0.4);
            transition: all .25s ease;
            display: inline-block;
            border: none;
            cursor: pointer;
        }
        .btn-cta-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(27, 110, 240, 0.5);
            filter: brightness(1.05);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 64px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            color: #7E90A9;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 340px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid #2B3B52;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #8CA2BF;
            transition: all .25s ease;
        }
        .footer-social a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(27, 110, 240, 0.1);
        }
        .site-footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #8CA2BF;
            font-size: 14px;
            transition: color .25s ease, padding-left .25s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            color: #8CA2BF;
            font-size: 14px;
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .footer-contact li:first-child {
            color: #fff;
            font-weight: 600;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
        }
        .footer-bottom p {
            color: #60758E;
            font-size: 13px;
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .navbar-nav .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
            .search-form {
                width: 150px;
            }
        }
        @media (max-width: 991.98px) {
            .site-header {
                height: auto;
                min-height: 64px;
                padding: 10px 0;
            }
            .navbar-collapse {
                background: rgba(11, 21, 38, 0.97);
                border-radius: 12px;
                padding: 20px;
                margin-top: 12px;
                border: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            }
            .navbar-nav {
                gap: 4px;
                margin-bottom: 16px !important;
            }
            .navbar-nav .nav-link {
                padding: 10px 14px;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .navbar-nav .nav-link.active {
                background: rgba(27, 110, 240, 0.15);
                border-radius: 8px;
            }
            .nav-right {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .search-form {
                width: 100%;
            }
            .btn-login {
                text-align: center;
                padding: 10px;
                background: rgba(255, 255, 255, 0.06);
                border-radius: 8px;
            }
            .btn-nav-primary {
                text-align: center;
                padding: 12px 18px;
            }
            .cat-hero {
                padding: 70px 0 44px;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .cat-hero-tags {
                justify-content: flex-start;
                margin-top: 24px;
            }
            .info-intro,
            .info-features,
            .info-picks,
            .info-process,
            .info-faq,
            .info-cta {
                padding: 56px 0;
            }
        }
        @media (max-width: 767.98px) {
            .cat-hero {
                padding: 60px 0 36px;
                margin-top: 64px;
            }
            .cat-hero h1 {
                font-size: 28px;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .cat-hero-tags {
                gap: 8px;
            }
            .cat-hero-tags .tag-chip {
                font-size: 13px;
                padding: 6px 14px;
            }
            .section-header h2,
            .info-intro h2 {
                font-size: 26px;
            }
            .info-cta h2 {
                font-size: 26px;
            }
            .btn-cta-primary {
                width: 100%;
                max-width: 320px;
                text-align: center;
            }
            .site-footer {
                padding: 48px 0 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #1B6EF0;
  --primary-dark: #0F3B7A;
  --secondary: #12B3A8;
  --secondary-2: #4A9EFF;
  --accent: #F6A821;
  --bg-dark: #0B1526;
  --bg-card-dark: #101E33;
  --bg-light: #F4F7FB;
  --white: #FFFFFF;
  --text-primary: #1E293B;
  --text-secondary: #5B6B83;
  --text-muted: #8A98AC;
  --border-line: #E4E9F0;
  --dark-text: #E8EEF7;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 2px 8px rgba(15,42,80,0.06);
  --shadow-hover: 0 6px 20px rgba(27,110,240,0.14);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; transition: all 0.25s ease; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.4; letter-spacing: 0.01em; margin-bottom: 0.5rem; }
h1 { font-size: 42px; }
h2 { font-size: 30px; }
h3 { font-size: 21px; }
h4 { font-size: 17px; }
p { line-height: 1.75; }
.container { max-width: 1200px; }
@media (max-width: 767px) {
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1080;
  background: rgba(11, 21, 38, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.site-header .navbar { padding: 0; min-height: 72px; }
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-right: 24px;
}
.site-header .navbar-brand:hover { color: #fff; }
.site-header .navbar-brand svg { width: 32px; height: 32px; flex-shrink: 0; }
.site-header .navbar-nav { align-items: center; }
.site-header .navbar-nav .nav-link {
  color: #C3D2E3;
  font-size: 15px;
  font-weight: 600;
  padding: 0 18px;
  line-height: 72px;
  position: relative;
}
.site-header .navbar-nav .nav-link:hover { color: #fff; }
.site-header .navbar-nav .nav-link.active { color: #4A9EFF; }
.site-header .navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.search-form { position: relative; }
.search-form input {
  width: 180px;
  height: 38px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  padding: 0 38px 0 14px;
  font-size: 13px;
  outline: none;
  transition: all 0.25s ease;
}
.search-form input::placeholder { color: #7E90A9; }
.search-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27, 110, 240, 0.25);
  background: rgba(255, 255, 255, 0.12);
}
.search-form button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #7E90A9;
  padding: 0;
  line-height: 1;
}
.search-form button svg { width: 16px; height: 16px; }
.nav-login { color: #AEBFD9; font-size: 14px; font-weight: 500; }
.nav-login:hover { color: #fff; }
.btn-consult {
  background: linear-gradient(135deg, #1B6EF0, #4A9EFF);
  color: #fff;
  border: none;
  padding: 9px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(27, 110, 240, 0.35);
  transition: all 0.25s ease;
  line-height: 1.4;
}
.btn-consult:hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(27, 110, 240, 0.45);
  color: #fff;
}
.navbar-toggler { border: none; padding: 8px 6px; }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 5px 0;
  border-radius: 2px;
}
@media (max-width: 991px) {
  .site-header .navbar { min-height: 64px; }
  .site-header .navbar-nav .nav-link { line-height: 46px; padding: 0 8px; }
  .site-header .navbar-nav .nav-link.active::after { display: none; }
  .nav-right { flex-direction: column; align-items: stretch; gap: 12px; padding: 16px 0; }
  .search-form input { width: 100%; }
  .search-form { order: -1; }
  .nav-login { text-align: center; }
  .btn-consult { text-align: center; }
}

/* Hero */
.cat-hero {
  position: relative;
  background: linear-gradient(135deg, #0F3B7A 0%, #0B1526 75%);
  padding: 64px 0 56px;
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.26;
}
.cat-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(27, 110, 240, 0.3) 0%, transparent 70%);
  pointer-events: none;
}
.cat-hero .container { position: relative; z-index: 2; }
.cat-hero .breadcrumb-wrap {
  font-size: 13px;
  color: #8FA3BF;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.cat-hero .breadcrumb-wrap a { color: #8FA3BF; }
.cat-hero .breadcrumb-wrap a:hover { color: #fff; }
.cat-hero .breadcrumb-wrap .sep { color: #4B6180; }
.cat-hero .breadcrumb-wrap .current { color: #D3E3F7; }
.cat-hero h1 {
  color: #fff;
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 12px;
}
.cat-hero .hero-sub {
  color: #B8CCE8;
  font-size: 16px;
  max-width: 620px;
  margin-bottom: 0;
}
.cat-hero .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.cat-hero .tag-list span {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #D3E3F7;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.25s ease;
}
.cat-hero .tag-list span:hover {
  background: rgba(27, 110, 240, 0.3);
  border-color: rgba(27, 110, 240, 0.5);
  color: #fff;
}
.cat-hero .hero-bottom-line {
  margin-top: 40px;
  height: 1px;
  background: linear-gradient(90deg, rgba(27,110,240,0.9) 0%, rgba(18,179,168,0.6) 40%, transparent 100%);
}
@media (max-width: 767px) {
  .cat-hero { padding: 44px 0 36px; }
  .cat-hero h1 { font-size: 30px; }
  .cat-hero .hero-sub { font-size: 14px; }
}

/* Section */
.section-block { padding: 64px 0; }
.section-block.bg-white { background: #fff; }
.section-block.bg-light { background: var(--bg-light); }
.section-block.bg-dark { background: linear-gradient(135deg, #0B1526, #101E33); }
.section-header { margin-bottom: 40px; }
.section-header h2 { color: var(--text-primary); position: relative; padding-bottom: 14px; margin-bottom: 12px; }
.section-header h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 42px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.section-header .section-sub { color: var(--text-secondary); font-size: 15px; max-width: 640px; }
.section-header.text-center h2::after { left: 50%; transform: translateX(-50%); }
.section-header.text-center .section-sub { margin: 0 auto; }
@media (max-width: 767px) {
  .section-block { padding: 44px 0; }
  .section-header { margin-bottom: 28px; }
}

/* Feature cards */
.feature-card {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 12px;
  padding: 28px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: all 0.25s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 110, 240, 0.3);
}
.feature-card:hover::before { opacity: 1; }
.feature-card .feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(27,110,240,0.12), rgba(18,179,168,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--primary);
}
.feature-card .feature-icon svg { width: 24px; height: 24px; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }
.feature-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; line-height: 1.7; }

/* Tech cards */
.tech-card {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 12px;
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}
.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 110, 240, 0.3);
}
.tech-card .tech-img { aspect-ratio: 16 / 9; overflow: hidden; }
.tech-card .tech-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.tech-card:hover .tech-img img { transform: scale(1.04); }
.tech-card .tech-body { padding: 22px 22px 24px; }
.tech-card .tech-tag {
  display: inline-block;
  background: #EAF2FE;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.tech-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.tech-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.tech-card .tech-labels { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-card .tech-labels span {
  background: #F1F4F9;
  color: var(--text-secondary);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
}

/* Lead card */
.lead-card {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(15,42,80,0.08);
  transition: all 0.25s ease;
  height: 100%;
}
.lead-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.lead-card .lead-img { height: 100%; min-height: 260px; overflow: hidden; }
.lead-card .lead-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.lead-card:hover .lead-img img { transform: scale(1.03); }
.lead-card .lead-body { padding: 28px; }
.lead-card .tech-tag {
  display: inline-block;
  background: #EAF2FE;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.lead-card h2 { font-size: 22px; font-weight: 800; margin-bottom: 12px; color: var(--text-primary); line-height: 1.4; }
.lead-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.lead-card .btn-scheme {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--primary), #3B8BFF);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(27,110,240,0.3);
  transition: all 0.25s ease;
  border: none;
}
.lead-card .btn-scheme:hover { filter: brightness(1.06); transform: translateY(-2px); color: #fff; box-shadow: 0 6px 22px rgba(27,110,240,0.45); }
@media (max-width: 767px) {
  .lead-card .lead-img { min-height: 200px; }
  .lead-card .lead-body { padding: 20px; }
}

/* Sidebar card */
.side-card {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}
.side-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-line);
  position: relative;
}
.side-card h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 2px;
  background: var(--primary);
}
.side-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; }
.rank-list { list-style: none; margin: 0; padding: 0; }
.rank-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed #EEF2F7;
}
.rank-list li:last-child { border-bottom: none; padding-bottom: 0; }
.rank-list .rank-num {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #EAF2FE;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-list li:nth-child(1) .rank-num { background: var(--primary); color: #fff; }
.rank-list li:nth-child(2) .rank-num { background: #DCE9FC; color: var(--primary); }
.rank-list .rank-text { font-size: 14px; color: var(--text-primary); font-weight: 500; line-height: 1.5; }
.rank-list .rank-text:hover { color: var(--primary); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  display: inline-block;
  background: #F1F4F9;
  color: var(--text-secondary);
  font-size: 12px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}
.tag-cloud a:hover {
  background: #EAF2FE;
  color: var(--primary);
  border-color: rgba(27, 110, 240, 0.2);
}
.side-cta {
  background: linear-gradient(135deg, #101E33, #0F3B7A);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 26px 24px;
  color: #fff;
}
.side-cta h5 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.side-cta p { font-size: 13px; color: #B8CCE8; line-height: 1.7; margin-bottom: 18px; }
.side-cta .btn-side-cta {
  display: block;
  background: linear-gradient(135deg, var(--primary), #3B8BFF);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 4px 14px rgba(27,110,240,0.35);
  transition: all 0.25s ease;
}
.side-cta .btn-side-cta:hover { filter: brightness(1.06); transform: translateY(-2px); color: #fff; }

/* Scene cards */
.scene-card {
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 12px;
  padding: 26px 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  position: relative;
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(18,179,168,0.35);
}
.scene-card .scene-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: rgba(18,179,168,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  margin-bottom: 16px;
}
.scene-card .scene-icon svg { width: 22px; height: 22px; }
.scene-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.scene-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; }

/* Steps */
.step-card {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 12px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  position: relative;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-card .step-num {
  font-size: 30px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
  line-height: 1.2;
}
.step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.step-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; }

/* FAQ */
.faq-wrap { max-width: 880px; margin: 0 auto; }
.accordion-item {
  background: #fff;
  border: 1px solid var(--border-line) !important;
  border-radius: 12px !important;
  margin-bottom: 14px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.accordion-item:last-child { margin-bottom: 0; }
.accordion-button {
  background: #fff;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 24px;
  border: none;
  box-shadow: none;
  transition: all 0.25s ease;
}
.accordion-button:hover { color: var(--primary); background: #F8FAFD; }
.accordion-button:not(.collapsed) {
  background: #F8FAFD;
  color: var(--primary);
  box-shadow: none;
}
.accordion-button:focus { box-shadow: none; border-color: transparent; }
.accordion-button::after {
  background-image: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: #EAF2FE;
  content: "+";
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  transition: transform 0.3s ease;
  line-height: 1;
}
.accordion-button:not(.collapsed)::after {
  background-image: none;
  transform: rotate(45deg);
  background-color: var(--primary);
  color: #fff;
}
.accordion-body {
  padding: 6px 24px 22px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  border-top: 1px solid #F1F4F9;
}

/* CTA banner */
.cta-banner {
  position: relative;
  background: linear-gradient(120deg, #0F3B7A 0%, #0B1526 70%);
  border-radius: 18px;
  padding: 56px 48px;
  overflow: hidden;
  box-shadow: 0 10px 36px rgba(11,21,38,0.25);
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
}
.cta-banner .cta-content { position: relative; z-index: 2; }
.cta-banner h2 { color: #fff; font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-banner p { color: #B8CCE8; font-size: 15px; max-width: 560px; margin-bottom: 26px; }
.cta-banner .btn-cta-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--primary), #4A9EFF);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(27,110,240,0.45);
  transition: all 0.25s ease;
  border: none;
}
.cta-banner .btn-cta-main:hover { filter: brightness(1.08); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(27,110,240,0.55); color: #fff; }
@media (max-width: 767px) {
  .cta-banner { padding: 36px 24px; border-radius: 14px; }
  .cta-banner h2 { font-size: 24px; }
  .cta-banner .btn-cta-main { width: 100%; justify-content: center; }
}

/* Footer */
.site-footer {
  background: #0B1526;
  padding: 60px 0 24px;
  color: #7E90A9;
  margin-top: 0;
}
.footer-top { margin-bottom: 40px; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
}
.footer-brand svg { width: 28px; height: 28px; }
.footer-desc {
  font-size: 14px;
  color: #7E90A9;
  line-height: 1.75;
  max-width: 320px;
  margin-bottom: 18px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid #2B3B52;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8CA2BF;
  transition: all 0.25s ease;
}
.footer-social a:hover { border-color: var(--primary); color: var(--secondary-2); background: rgba(27,110,240,0.1); }
.site-footer h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 12px; }
.footer-links a {
  color: #8CA2BF;
  font-size: 14px;
  line-height: 1.4;
  transition: all 0.25s ease;
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact { list-style: none; margin: 0; padding: 0; }
.footer-contact li {
  font-size: 14px;
  color: #8CA2BF;
  margin-bottom: 12px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.footer-contact svg { width: 16px; height: 16px; margin-top: 3px; flex-shrink: 0; color: var(--secondary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #60758E;
}
.footer-bottom span { display: inline-flex; align-items: center; gap: 6px; }
@media (max-width: 767px) {
  .site-footer { padding: 44px 0 20px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
}