/* roulang page: index */
:root {
            --primary: #147A9A;
            --primary-dark: #0D5369;
            --primary-light: #E5F2F5;
            --cta: #F26B38;
            --cta-dark: #D95624;
            --success: #26B97A;
            --bg-main: #F5F9FA;
            --bg-card: #FFFFFF;
            --bg-alt: #EDF4F6;
            --text-main: #1A2B35;
            --text-sub: #5B6E7B;
            --text-weak: #93A5AE;
            --border: #DCE8EC;
            --divider: #ECF1F3;
            --radius-card: 12px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 16px rgba(13, 83, 105, 0.08);
            --shadow-hover: 0 12px 32px rgba(13, 83, 105, 0.14);
            --shadow-cta: 0 4px 12px rgba(242, 107, 56, 0.3);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-main);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

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

        /* ===== Header & Navigation ===== */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid #E5EDF0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }

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

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.3;
        }

        .brand-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }

        .brand-sub {
            font-size: 10px;
            color: var(--text-weak);
            letter-spacing: 0.5px;
        }

        .navbar .nav-link {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
            padding: 24px 18px;
            position: relative;
            transition: var(--transition);
        }

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

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

        .navbar .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px 4px 0 0;
        }

        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 18px;
            background: var(--cta);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-cta-nav:hover {
            background: var(--cta-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(242, 107, 56, 0.35);
        }

        .btn-cta-nav i {
            font-size: 15px;
        }

        .navbar-toggler {
            border: none;
            outline: none;
            padding: 8px;
            background: transparent;
            box-shadow: none !important;
        }

        .navbar-toggler-icon {
            width: 24px;
            height: 24px;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23147A9A' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-collapse .btn-cta-nav {
            display: none;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(180deg, #EAF4F7 0%, #FFFFFF 100%);
            padding: 88px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            top: 40px;
            right: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(20, 122, 154, 0.04);
            pointer-events: none;
        }

        .hero-content {
            padding-right: 40px;
        }

        .hero-content h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .hero-content h1 .highlight {
            color: var(--primary);
        }

        .hero-sub {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-bottom: 32px;
            max-width: 460px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: var(--cta);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            transition: var(--transition);
        }

        .btn-cta:hover {
            background: var(--cta-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(242, 107, 56, 0.38);
            transform: translateY(-1px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-sub);
        }

        .trust-item i {
            color: var(--success);
            font-size: 16px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual .main-img {
            border-radius: 16px;
            border: 1px solid var(--primary);
            box-shadow: var(--shadow-hover);
            width: 100%;
            height: auto;
        }

        .online-badge {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--success);
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 12px rgba(13, 83, 105, 0.1);
        }

        .online-badge::before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 88px 0;
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            padding-left: 14px;
            border-left: 6px solid var(--primary);
            margin: 0;
        }

        .section-header .link-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }

        .section-header .link-more i {
            font-size: 13px;
            vertical-align: 1px;
        }

        .section-header .link-more:hover {
            color: var(--primary-dark);
        }

        /* ===== Services ===== */
        .services-section {
            padding: 88px 0 0;
        }

        .service-main-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .service-main-card .icon-box {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .service-main-card .icon-box i {
            font-size: 24px;
            color: var(--primary);
        }

        .service-main-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .service-main-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .service-points {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .service-points li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-main);
            padding: 6px 0;
        }

        .service-points li i {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .service-main-card .link-detail {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .service-main-card .link-detail:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        .service-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
            height: 100%;
        }

        .service-small-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px;
            flex: 1;
            transition: var(--transition);
        }

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

        .service-small-card .icon-box {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .service-small-card .icon-box i {
            font-size: 20px;
            color: var(--primary);
        }

        .service-small-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .service-small-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: 88px 0 0;
        }

        .stats-panel {
            background: var(--primary-dark);
            border-radius: 24px;
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .stats-panel::before {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .stats-panel::after {
            content: "";
            position: absolute;
            bottom: -30px;
            left: 30%;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .stats-title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .stats-title small {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .stat-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 12px 0;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--cta);
        }

        .stat-number .unit {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-left: 2px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ===== Cases ===== */
        .cases-section {
            padding: 88px 0 0;
        }

        .case-item {
            margin-bottom: 56px;
            align-items: center;
        }

        .case-item:last-child {
            margin-bottom: 0;
        }

        .case-img-wrap {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .case-img-wrap img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-img-wrap:hover img {
            transform: scale(1.02);
        }

        .case-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            z-index: 2;
        }

        .case-content {
            padding: 20px 0;
        }

        .case-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .case-content p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 480px;
        }

        .case-content .link-more {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .case-content .link-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ===== Plan ===== */
        .plan-section {
            padding: 88px 0 0;
        }

        .plan-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px;
            position: relative;
        }

        .plan-steps {
            display: flex;
            gap: 0;
            position: relative;
        }

        .plan-step {
            flex: 1;
            padding: 0 20px;
            position: relative;
            text-align: left;
        }

        .plan-step:not(:last-child)::after {
            content: "";
            position: absolute;
            top: 44px;
            right: -1px;
            width: calc(100% - 40px);
            max-width: 100px;
            border-top: 2px dashed var(--border);
            z-index: 0;
        }

        .step-num {
            display: block;
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary-light);
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .plan-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .plan-step p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
            max-width: 240px;
        }

        .plan-contact {
            flex: 0 0 220px;
            padding-left: 32px;
            border-left: 1px solid var(--divider);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .plan-contact p {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .plan-contact .btn-outline {
            align-self: flex-start;
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 88px 0 0;
        }

        .faq-section .accordion {
            max-width: 860px;
        }

        .faq-section .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card) !important;
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-section .accordion-item:last-child {
            margin-bottom: 0;
        }

        .faq-section .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            padding: 18px 24px;
            box-shadow: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
        }

        .faq-section .accordion-button::after {
            content: "+";
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            background: none;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-section .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }

        .faq-section .accordion-button:not(.collapsed)::after {
            content: "−";
            color: var(--primary);
        }

        .faq-section .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(20, 122, 154, 0.15);
            border-radius: var(--radius-card);
        }

        .faq-section .accordion-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== Contact ===== */
        .contact-section {
            padding: 88px 0 0;
        }

        .contact-info-wrap {
            padding-right: 24px;
        }

        .contact-info-wrap h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            padding-left: 14px;
            border-left: 6px solid var(--primary);
            margin-bottom: 28px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }

        .contact-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .contact-icon i {
            font-size: 18px;
            color: var(--primary);
        }

        .contact-item .text {
            padding-top: 2px;
        }

        .contact-item .label {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 2px;
        }

        .contact-item .value {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
            line-height: 1.5;
        }

        .contact-map {
            margin-top: 24px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 180px;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-weak);
            border: 1px solid var(--border);
        }

        .contact-form-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px;
        }

        .contact-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

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

        .form-control-custom {
            width: 100%;
            height: 44px;
            background: #F7FAFB;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-main);
            transition: var(--transition);
            outline: none;
        }

        .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20, 122, 154, 0.15);
            background: #fff;
        }

        textarea.form-control-custom {
            height: auto;
            min-height: 100px;
            padding: 12px 14px;
            resize: vertical;
        }

        .btn-submit {
            width: 100%;
            height: 44px;
            background: var(--cta);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-submit:hover {
            background: var(--cta-dark);
            box-shadow: 0 6px 16px rgba(242, 107, 56, 0.35);
            transform: translateY(-1px);
        }

        .btn-submit:disabled {
            background: #C1CDD2;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
        }

        .form-success-tip {
            display: none;
            background: var(--primary-light);
            border: 1px solid var(--primary);
            color: var(--primary-dark);
            font-size: 14px;
            padding: 14px 18px;
            border-radius: var(--radius-card);
            margin-top: 16px;
            text-align: center;
        }

        /* ===== News ===== */
        .news-section {
            padding: 88px 0;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-thumb {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-alt);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

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

        .news-content .excerpt {
            font-size: 14px;
            color: var(--text-sub);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 6px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .news-meta .badge-cat {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
        }

        .empty-state {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            height: 160px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-sub);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }

        .footer-brand-area {
            margin-bottom: 24px;
        }

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

        .footer-logo .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .footer-logo .brand-name {
            color: #fff;
        }

        .footer-logo .brand-sub {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            max-width: 240px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 12px;
        }

        .footer-contact-item i {
            color: rgba(255, 255, 255, 0.5);
            font-size: 16px;
            flex-shrink: 0;
        }

        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-card);
                box-shadow: var(--shadow-hover);
                padding: 20px 24px;
                margin-top: 12px;
                border: 1px solid var(--border);
            }

            .navbar .nav-link {
                padding: 12px 0;
                border-bottom: 1px solid var(--divider);
            }

            .navbar .nav-link.active::after {
                display: none;
            }

            .navbar .nav-link.active {
                background: var(--primary-light);
                border-radius: var(--radius-sm);
                padding-left: 12px;
                color: var(--primary);
            }

            .navbar-collapse .btn-cta-nav {
                display: flex;
                width: 100%;
                justify-content: center;
                margin-top: 16px;
            }

            .hero-section {
                padding: 64px 0 56px;
            }

            .hero-content {
                padding-right: 0;
                margin-bottom: 40px;
            }

            .service-stack {
                margin-top: 24px;
            }

            .plan-steps {
                flex-wrap: wrap;
                gap: 32px 0;
            }

            .plan-step {
                flex: 0 0 50%;
            }

            .plan-step:nth-child(2)::after {
                display: none;
            }

            .plan-contact {
                flex: 0 0 100%;
                border-left: none;
                border-top: 1px solid var(--divider);
                padding-left: 0;
                padding-top: 24px;
            }

            .stats-panel {
                padding: 40px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .section,
            .services-section,
            .stats-section,
            .cases-section,
            .plan-section,
            .faq-section,
            .contact-section {
                padding: 56px 0 0;
            }

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

            .hero-section {
                padding: 48px 0 40px;
            }

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

            .hero-trust {
                gap: 16px;
            }

            .stats-panel {
                border-radius: 16px;
                padding: 32px 20px;
            }

            .stat-number {
                font-size: 34px;
            }

            .stat-item {
                padding: 10px 4px;
            }

            .stats-title {
                margin-bottom: 20px;
            }

            .case-img-wrap img {
                height: 240px;
            }

            .plan-wrapper {
                padding: 28px 24px;
            }

            .plan-step {
                flex: 0 0 100%;
            }

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

            .plan-contact {
                padding-top: 20px;
            }

            .contact-info-wrap {
                padding-right: 0;
                margin-bottom: 40px;
            }

            .contact-form-card {
                padding: 24px 20px;
            }

            .news-thumb {
                width: 50px;
                height: 50px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-content h1 {
                font-size: 24px;
            }

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

            .hero-actions .btn-cta,
            .hero-actions .btn-outline {
                width: 100%;
            }

            .btn-cta-nav {
                padding: 0 14px;
                font-size: 13px;
            }

            .service-main-card {
                padding: 24px 20px;
            }

            .service-small-card {
                padding: 22px 20px;
            }

            .case-content {
                padding-top: 16px;
            }

            .case-content h3 {
                font-size: 18px;
            }

            .case-tag {
                font-size: 12px;
                padding: 4px 10px;
            }

            .contact-icon {
                width: 38px;
                height: 38px;
            }

            .contact-icon i {
                font-size: 16px;
            }

            .footer-bottom {
                padding: 16px 0;
                font-size: 13px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #147A9A;
            --primary-dark: #0D5369;
            --primary-light: #E5F2F5;
            --cta: #F26B38;
            --cta-hover: #D95624;
            --success: #26B97A;
            --bg: #F5F9FA;
            --bg-alt: #EDF4F6;
            --card: #FFFFFF;
            --text-main: #1A2B35;
            --text-sub: #5B6E7B;
            --text-muted: #93A5AE;
            --border: #DCE8EC;
            --divider: #ECF1F3;
            --radius-card: 12px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --shadow-card: 0 4px 16px rgba(13, 83, 105, 0.08);
            --shadow-hover: 0 12px 32px rgba(13, 83, 105, 0.14);
            --transition: all 0.3s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            border-left: 6px solid var(--primary);
            padding-left: 16px;
            margin-bottom: 16px;
        }
        .section-sub {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 40px;
            max-width: 680px;
        }

        /* ===== 按钮 ===== */
        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--cta);
            color: #fff;
            font-weight: 600;
            height: 44px;
            padding: 0 24px;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 12px rgba(242, 107, 56, 0.3);
            transition: var(--transition);
        }
        .btn-cta:hover {
            background: var(--cta-hover);
            color: #fff;
            box-shadow: 0 8px 20px rgba(242, 107, 56, 0.4);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            height: 44px;
            padding: 0 24px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }
        .text-link-arrow {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .text-link-arrow i {
            transition: transform 0.2s ease;
        }
        .text-link-arrow:hover {
            color: var(--primary-dark);
        }
        .text-link-arrow:hover i {
            transform: translateX(4px);
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid #E5EDF0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar {
            min-height: 72px;
            padding: 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
        }
        .brand-sub {
            font-size: 10px;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            padding: 25px 16px;
            position: relative;
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 4px;
            background: var(--primary);
            border-radius: 4px 4px 0 0;
        }
        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cta);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            height: 40px;
            padding: 0 20px;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 12px rgba(242, 107, 56, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-cta-nav:hover {
            background: var(--cta-hover);
            color: #fff;
        }
        .navbar-toggler {
            border: none;
            padding: 8px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(20, 122, 154, 0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,43,53,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== 页面 Banner ===== */
        .page-banner {
            background: var(--primary-light) url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            position: relative;
            padding: 48px 0;
            min-height: 160px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(229, 242, 245, 0.92);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .page-banner .banner-sub {
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 0;
        }

        /* ===== 服务概览（1大+2小） ===== */
        .service-overview-section {
            padding-top: 72px;
            padding-bottom: 40px;
        }
        .service-main-card {
            background: var(--card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .service-main-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-main-card .card-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .service-main-card .card-head .card-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            flex-shrink: 0;
        }
        .service-main-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 0;
            color: var(--text-main);
        }
        .service-main-card p {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 20px;
        }
        .service-flow {
            display: flex;
            align-items: flex-start;
            margin: 12px 0 24px;
        }
        .flow-step {
            flex: 1;
            text-align: center;
            padding: 0 6px;
        }
        .flow-step .flow-icon {
            width: 48px;
            height: 48px;
            background: var(--bg-alt);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 10px;
        }
        .flow-step h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .flow-step p {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .flow-line {
            width: 24px;
            padding-top: 24px;
            flex-shrink: 0;
        }
        .flow-line span {
            display: block;
            border-top: 1px dashed var(--text-muted);
        }
        .service-main-card .card-footer-link {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--divider);
        }

        /* 右侧上下小卡片 */
        .service-side-card {
            background: var(--card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            margin-bottom: 24px;
            transition: var(--transition);
            height: calc(50% - 12px);
        }
        .service-side-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-side-card:last-child {
            margin-bottom: 0;
        }
        .service-side-card .side-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 14px;
        }
        .service-side-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .service-side-card p {
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .service-side-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .service-side-card ul li {
            font-size: 13px;
            color: var(--text-sub);
            padding: 5px 0;
            padding-left: 18px;
            position: relative;
        }
        .service-side-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* ===== 服务能力 ===== */
        .capability-section {
            background: var(--card);
            padding: 72px 0;
        }
        .capability-image {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .capability-image img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .capability-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .capability-list li {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--divider);
        }
        .capability-list li:last-child {
            border-bottom: none;
        }
        .capability-list .cap-index {
            width: 36px;
            height: 36px;
            background: var(--primary-light);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }
        .capability-list h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .capability-list p {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== 服务流程 ===== */
        .process-section {
            background: var(--bg-alt);
            padding: 72px 0;
        }
        .process-steps {
            display: flex;
            align-items: stretch;
        }
        .process-step {
            flex: 1;
            background: var(--card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            transition: var(--transition);
        }
        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 12px;
            width: 72px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            line-height: 1;
        }
        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .process-line {
            width: 32px;
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .process-line span {
            display: block;
            width: 100%;
            border-top: 1px dashed var(--text-muted);
        }
        .process-cta {
            width: 220px;
            background: var(--primary-dark);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            flex-shrink: 0;
        }
        .process-cta span {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .process-cta .btn-cta {
            width: 100%;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-wrapper {
            max-width: 860px;
        }
        .accordion-item {
            background: var(--card);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(13, 83, 105, 0.04);
        }
        .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            background: var(--card);
            padding: 20px 24px;
            border: none;
            box-shadow: none !important;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--card);
        }
        .accordion-button::after {
            content: '+';
            background-image: none !important;
            font-size: 22px;
            font-weight: 400;
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .accordion-button:not(.collapsed)::after {
            content: '−';
            transform: none;
        }
        .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid var(--divider);
            padding-top: 16px;
        }

        /* ===== 联系 / CTA ===== */
        .contact-section {
            background: var(--card);
            padding: 72px 0;
        }
        .contact-info-card {
            padding-right: 32px;
        }
        .contact-info-item {
            display: flex;
            gap: 14px;
            margin-bottom: 20px;
            align-items: flex-start;
        }
        .contact-info-item .info-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .contact-info-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 2px;
        }
        .contact-info-item p {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 0;
        }
        .contact-form-card {
            background: var(--bg);
            border-radius: var(--radius-card);
            padding: 32px;
            border: 1px solid var(--border);
        }
        .contact-form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .contact-form-card .form-control {
            background: #F7FAFB;
            border: 1px solid var(--border);
            height: 44px;
            border-radius: var(--radius-input);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-main);
            transition: var(--transition);
        }
        .contact-form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20, 122, 154, 0.15);
            background: #fff;
        }
        .contact-form-card textarea.form-control {
            height: auto;
            padding: 12px 14px;
            resize: vertical;
        }
        .contact-form-card .btn-cta {
            width: 100%;
            margin-top: 8px;
        }
        .form-success {
            margin-top: 14px;
            background: rgba(38, 185, 122, 0.1);
            border: 1px solid rgba(38, 185, 122, 0.3);
            color: #1B7D55;
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
            font-size: 14px;
        }
        .site-footer .footer-brand-area {
            margin-bottom: 16px;
        }
        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-logo .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-radius: 10px;
        }
        .site-footer .footer-logo .brand-name {
            color: #fff;
        }
        .site-footer .footer-logo .brand-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            max-width: 260px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 12px;
            font-size: 14px;
        }
        .footer-contact-item i {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 48px;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .navbar-nav .nav-link {
                padding: 14px 16px;
                border-bottom: 1px solid var(--divider);
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .navbar-nav .nav-link.active {
                background: var(--primary-light);
            }
            .btn-cta-nav {
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .service-flow,
            .process-steps {
                flex-direction: column;
                gap: 16px;
            }
            .flow-line {
                width: 1px;
                height: 24px;
                padding: 0;
                margin-left: 44px;
            }
            .flow-line span {
                width: 100%;
                height: 100%;
                border-top: none;
                border-left: 1px dashed var(--text-muted);
            }
            .process-line {
                width: 1px;
                height: 32px;
                margin-left: 36px;
            }
            .process-line span {
                width: 100%;
                height: 100%;
                border-top: none;
                border-left: 1px dashed var(--text-muted);
            }
            .process-cta {
                width: 100%;
            }
            .capability-image {
                margin-bottom: 24px;
            }
        }
        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
            .page-banner {
                padding: 36px 0;
                min-height: 140px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .service-main-card {
                padding: 24px;
            }
            .service-side-card {
                height: auto;
            }
            .contact-form-card {
                padding: 24px;
            }
            .site-footer {
                padding: 48px 0 20px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .step-number {
                width: 56px;
                height: 56px;
                font-size: 32px;
            }
            .flow-step p {
                font-size: 12px;
            }
            .btn-cta {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #147A9A;
            --primary-dark: #0D5369;
            --primary-light: #E5F2F5;
            --cta: #F26B38;
            --cta-dark: #D95624;
            --success: #26B97A;
            --bg-main: #F5F9FA;
            --bg-alt: #EDF4F6;
            --text-main: #1A2B35;
            --text-sub: #5B6E7B;
            --text-muted: #93A5AE;
            --border: #DCE8EC;
            --border-light: #ECF1F3;
            --radius-card: 12px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 16px rgba(13,83,105,0.08);
            --shadow-hover: 0 12px 32px rgba(13,83,105,0.14);
            --transition: all 0.3s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-main);
            color: var(--text-main);
            font-size: 15px;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #fff;
            border-bottom: 1px solid #E5EDF0;
        }
        .site-header .navbar {
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 0;
            padding-bottom: 0;
            margin: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            flex-shrink: 0;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }
        .brand-sub {
            font-size: 10px;
            color: var(--text-muted);
            letter-spacing: 1px;
        }
        .site-header .navbar-nav .nav-link {
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 16px;
            position: relative;
            transition: var(--transition);
            background: transparent;
            border: none;
        }
        .site-header .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px 4px 0 0;
        }
        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 20px;
            background: var(--cta);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 12px rgba(242,107,56,0.3);
            transition: var(--transition);
            min-width: 110px;
            justify-content: center;
        }
        .btn-cta-nav:hover {
            background: var(--cta-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(242,107,56,0.4);
        }
        .navbar-toggler {
            border: none;
            padding: 4px 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: none;
        }
        .navbar-toggler-icon {
            width: 24px;
            height: 24px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23147A9A' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }
        @media (max-width: 992px) {
            .site-header .navbar-collapse {
                background: #fff;
                padding: 16px 0 24px;
                border-top: 1px solid var(--border-light);
                margin-top: 8px;
            }
            .site-header .navbar-nav {
                padding: 8px 0;
            }
            .site-header .navbar-nav .nav-link {
                padding: 12px 16px;
            }
            .site-header .navbar-nav .nav-link.active::after {
                display: none;
            }
            .btn-cta-nav {
                margin: 12px 16px 0;
                width: calc(100% - 32px);
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 40px 0 24px;
            background: linear-gradient(180deg, #EAF4F7 0%, #F5F9FA 100%);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
        }
        .breadcrumb-item {
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb-item a {
            color: var(--text-muted);
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 500;
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--text-muted);
            content: "/";
        }
        @media (max-width: 576px) {
            .breadcrumb-wrap {
                padding: 24px 0 16px;
            }
            .breadcrumb-item.active {
                max-width: 200px;
            }
        }

        /* ===== Article Section ===== */
        .article-section {
            padding: 48px 0 72px;
        }
        .article-wrapper {
            max-width: 860px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 48px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-header h1 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .meta-item i {
            color: var(--primary);
            font-size: 14px;
        }
        .category-badge {
            display: inline-block;
            padding: 3px 12px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
        }

        /* ===== Article Content ===== */
        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: #33424D;
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content img {
            max-width: 100%;
            border-radius: 10px;
            margin: 24px auto;
            display: block;
        }
        .article-content figcaption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin: 8px 0 16px;
            line-height: 1.6;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-main);
            font-weight: 700;
            margin-top: 32px;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .article-content h2 {
            font-size: 22px;
        }
        .article-content h3 {
            font-size: 19px;
        }
        .article-content h4 {
            font-size: 16px;
            font-weight: 600;
            padding-left: 12px;
            border-left: 3px solid var(--primary);
        }
        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: #F0F7F9;
            padding: 20px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            color: var(--text-sub);
            font-size: 15px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 16px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid transparent;
        }
        .article-content a:hover {
            border-bottom-color: var(--primary);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content table th,
        .article-content table td {
            padding: 12px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-content table th {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--text-main);
        }
        .article-content hr {
            border: none;
            border-top: 1px solid var(--border-light);
            margin: 32px 0;
        }
        .article-content code {
            background: var(--bg-alt);
            color: var(--primary-dark);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }
        @media (max-width: 768px) {
            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }
        }

        /* ===== Tags ===== */
        .article-tags {
            max-width: 760px;
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            border-radius: 999px;
            font-weight: 500;
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 36px;
            color: var(--primary);
        }
        .not-found h2 {
            font-size: 24px;
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-sub);
            margin-bottom: 24px;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--cta);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            box-shadow: 0 4px 12px rgba(242,107,56,0.3);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-cta:hover {
            background: var(--cta-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(242,107,56,0.35);
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 0 0 88px;
        }
        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
            position: relative;
            padding-left: 16px;
        }
        .section-heading h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 6px;
            border-radius: 6px;
            background: var(--primary);
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            height: 100%;
            display: block;
            color: var(--text-main);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            color: var(--text-main);
        }
        .related-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .related-card-body {
            padding: 20px;
        }
        .related-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card-body p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .back-btn-wrap {
            margin-top: 40px;
            text-align: center;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            padding: 12px 24px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #fff;
            transition: var(--transition);
        }
        .back-link:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 24px;
            font-size: 14px;
        }
        .footer-brand-area {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo .brand-icon {
            background: rgba(255,255,255,0.15);
            border: 1px solid rgba(255,255,255,0.2);
        }
        .footer-logo .brand-name {
            color: #fff;
            font-size: 17px;
        }
        .footer-logo .brand-sub {
            color: rgba(255,255,255,0.5);
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            margin: 0;
            max-width: 260px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: rgba(255,255,255,0.3);
            border-radius: 2px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255,255,255,0.7);
            font-size: 14px;
        }
        .footer-contact-item i {
            color: var(--cta);
            width: 18px;
        }
        .footer-bottom {
            margin-top: 48px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .article-wrapper {
                padding: 32px 24px;
            }
            .article-header h1 {
                font-size: 26px;
            }
        }
        @media (max-width: 768px) {
            .article-section {
                padding: 32px 0 56px;
            }
            .related-section {
                padding-bottom: 56px;
            }
            .article-wrapper {
                padding: 24px 16px;
                border-radius: 8px;
            }
            .article-header h1 {
                font-size: 22px;
            }
            .article-header {
                margin-bottom: 32px;
                padding-bottom: 24px;
            }
            .related-card-body {
                padding: 16px;
            }
            .site-footer {
                padding: 48px 0 20px;
            }
            .footer-bottom {
                margin-top: 32px;
            }
        }
        @media (max-width: 576px) {
            .article-meta {
                gap: 6px 12px;
            }
            .back-btn-wrap {
                margin-top: 32px;
            }
            .back-link {
                width: 100%;
                justify-content: center;
            }
            .section-heading h2 {
                font-size: 22px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #147A9A;
            --primary-dark: #0D5369;
            --primary-light: #E5F2F5;
            --cta: #F26B38;
            --cta-dark: #D95624;
            --success: #26B97A;
            --bg: #F5F9FA;
            --card-bg: #FFFFFF;
            --alt-bg: #EDF4F6;
            --text-main: #1A2B35;
            --text-sub: #5B6E7B;
            --text-weak: #93A5AE;
            --border: #DCE8EC;
            --divider: #ECF1F3;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 16px rgba(13, 83, 105, 0.08);
            --shadow-hover: 0 12px 32px rgba(13, 83, 105, 0.14);
            --transition: all 0.3s ease;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        p {
            margin: 0 0 16px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-main);
            font-weight: 700;
            margin: 0 0 16px;
            line-height: 1.3;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding: 88px 0;
        }
        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
        }
        /* ===== Buttons ===== */
        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--cta);
            color: #fff;
            border: none;
            height: 44px;
            padding: 0 24px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(242, 107, 56, 0.3);
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-cta:hover {
            background: var(--cta-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(242, 107, 56, 0.4);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            height: 44px;
            padding: 0 24px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }
        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--cta);
            color: #fff;
            border: none;
            min-width: 110px;
            height: 40px;
            padding: 0 18px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(242, 107, 56, 0.3);
            transition: var(--transition);
        }
        .btn-cta-nav:hover {
            background: var(--cta-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(242, 107, 56, 0.4);
            transform: translateY(-2px);
        }
        .btn-cta-nav i {
            font-size: 16px;
        }
        /* ===== Header / Navbar ===== */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1030;
            border-bottom: 1px solid #E5EDF0;
            box-shadow: 0 2px 8px rgba(13, 83, 105, 0.04);
        }
        .site-header .navbar {
            min-height: 72px;
            padding: 0;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
            letter-spacing: 1px;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }
        .brand-sub {
            font-size: 10px;
            color: var(--text-weak);
            letter-spacing: 0.5px;
        }
        .site-header .navbar-nav {
            gap: 4px;
        }
        .site-header .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 16px;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .site-header .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .site-header .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 4px;
            border-radius: 4px;
            background: var(--primary);
        }
        .navbar-toggler {
            border: none;
            box-shadow: none !important;
            padding: 6px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(20,122,154,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 26px;
            height: 26px;
        }
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: #fff;
                border-top: 1px solid var(--divider);
                padding: 16px 0;
                margin-top: 8px;
                border-radius: 12px;
                box-shadow: var(--shadow);
            }
            .site-header .navbar-nav {
                gap: 2px;
                margin-bottom: 12px;
            }
            .site-header .nav-link {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .site-header .nav-link.active::after {
                display: none;
            }
            .site-header .nav-link.active {
                background: var(--primary-light);
            }
            .btn-cta-nav {
                width: 100%;
                margin-top: 8px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-name {
                font-size: 15px;
            }
            .brand-sub {
                font-size: 9px;
            }
        }
        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #EAF4F7 0%, #FFFFFF 100%);
            padding: 52px 0 88px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(20, 122, 154, 0.06);
            top: -120px;
            right: -80px;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(242, 107, 56, 0.05);
            bottom: -60px;
            left: 60px;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .category-hero .hero-sub {
            font-size: 16px;
            color: var(--text-sub);
            margin: 0;
            max-width: 520px;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 40px 0 56px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-sub {
                font-size: 14px;
            }
        }
        /* ===== Section Title ===== */
        .section-head {
            margin-bottom: 44px;
        }
        .section-head .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            padding-left: 14px;
            border-left: 6px solid var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-head .section-sub {
            font-size: 15px;
            color: var(--text-sub);
            margin: 0;
        }
        @media (max-width: 768px) {
            .section-head {
                margin-bottom: 32px;
            }
            .section-head .section-title {
                font-size: 21px;
            }
        }
        /* ===== Timeline ===== */
        .timeline-section {
            background: var(--bg);
        }
        .timeline {
            position: relative;
            padding-left: 0;
            max-width: 860px;
            margin: 0 auto;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 92px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }
        .timeline-item {
            position: relative;
            display: flex;
            align-items: flex-start;
            gap: 28px;
            padding: 0 0 36px;
            margin: 0;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-date {
            width: 76px;
            flex-shrink: 0;
            text-align: center;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 10px 8px;
            box-shadow: var(--shadow);
            z-index: 1;
        }
        .timeline-date .day {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            display: block;
        }
        .timeline-date .month {
            font-size: 13px;
            color: var(--text-weak);
            display: block;
            margin-top: 2px;
        }
        .timeline-content {
            flex: 1;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--divider);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .timeline-content:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .timeline-content .timeline-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 8px;
        }
        .timeline-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
            line-height: 1.4;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .badge-tag.hot {
            background: rgba(242, 107, 56, 0.12);
            color: var(--cta-dark);
        }
        .badge-tag.green {
            background: rgba(38, 185, 122, 0.12);
            color: var(--success);
        }
        .timeline-content p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }
        .timeline-more {
            max-width: 860px;
            margin: 40px auto 0;
            background: var(--alt-bg);
            border-radius: 12px;
            padding: 16px 24px;
            text-align: center;
            font-size: 14px;
            color: var(--text-sub);
        }
        @media (max-width: 768px) {
            .timeline::before {
                left: 0;
            }
            .timeline-item {
                flex-direction: column;
                gap: 12px;
                padding-left: 16px;
                padding-bottom: 32px;
            }
            .timeline-date {
                width: auto;
                display: inline-flex;
                align-items: center;
                gap: 6px;
                padding: 6px 14px;
                border-radius: 999px;
                font-size: 13px;
            }
            .timeline-date .day {
                font-size: 14px;
                display: inline;
            }
            .timeline-date .month {
                font-size: 13px;
                display: inline;
                margin: 0;
            }
            .timeline-content {
                padding: 20px;
            }
            .timeline-content .timeline-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .timeline-content h4 {
                font-size: 15px;
            }
        }
        /* ===== Info Cards ===== */
        .info-cards-section {
            background: var(--bg);
            padding-top: 0;
        }
        .info-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--divider);
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .info-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .info-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .info-card:hover .card-img img {
            transform: scale(1.04);
        }
        .info-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .info-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .info-card .card-body p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
            flex: 1;
        }
        /* ===== Platform Trend ===== */
        .trend-section {
            background: var(--bg);
            padding-top: 0;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--divider);
            box-shadow: var(--shadow);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card.large {
            position: relative;
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .feature-card .icon-wrap i {
            font-size: 24px;
            color: var(--primary);
        }
        .feature-card.large .cover-img {
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 20px;
        }
        .feature-card.large .cover-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-main);
            padding: 8px 0;
            border-bottom: 1px dashed var(--divider);
        }
        .feature-list li:last-child {
            border-bottom: none;
        }
        .feature-list li i {
            color: var(--success);
            font-size: 16px;
            flex-shrink: 0;
        }
        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .link-more:hover {
            color: var(--primary-dark);
        }
        .link-more i {
            transition: transform 0.3s ease;
        }
        .link-more:hover i {
            transform: translateX(4px);
        }
        .mini-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--divider);
            box-shadow: var(--shadow);
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .mini-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .mini-card .mini-img {
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16 / 8;
        }
        .mini-card .mini-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .mini-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .mini-card p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
            flex: 1;
        }
        @media (max-width: 768px) {
            .feature-card,
            .mini-card {
                padding: 20px;
            }
        }
        /* ===== Safety Tip ===== */
        .safety-section {
            background: var(--bg);
            padding-top: 0;
        }
        .safety-tip {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--divider);
            box-shadow: var(--shadow);
            padding: 40px;
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .safety-tip::before {
            content: "";
            position: absolute;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(38, 185, 122, 0.06);
            top: -50px;
            right: -40px;
        }
        .safety-tip .safety-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(38, 185, 122, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .safety-tip .safety-icon i {
            font-size: 30px;
            color: var(--success);
        }
        .safety-tip .safety-content {
            flex: 1;
            min-width: 260px;
        }
        .safety-tip .safety-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .safety-tip .safety-content p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
        }
        .safety-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(38, 185, 122, 0.12);
            color: var(--success);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        @media (max-width: 768px) {
            .safety-tip {
                padding: 24px;
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            background: var(--card-bg);
            padding: 18px 24px;
            font-family: var(--font-sans);
            box-shadow: none !important;
            border-radius: var(--radius) !important;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--card-bg);
        }
        .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 24px;
            font-weight: 400;
            color: var(--text-sub);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed)::after {
            content: "−";
            color: var(--primary);
        }
        .accordion-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            border-top: 1px solid var(--divider);
        }
        .accordion-body .inner {
            padding-top: 16px;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg);
            padding-top: 0;
        }
        .cta-panel {
            background: linear-gradient(120deg, var(--primary-dark) 0%, #1A6E8A 100%);
            border-radius: 20px;
            padding: 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            top: -80px;
            left: -60px;
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(242, 107, 56, 0.15);
            bottom: -60px;
            right: 40px;
        }
        .cta-panel .container {
            position: relative;
            z-index: 1;
        }
        .cta-panel h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-panel p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-panel .btn-cta {
            margin-right: 8px;
        }
        .cta-panel .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
            margin-left: 8px;
        }
        .cta-panel .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        @media (max-width: 768px) {
            .cta-panel {
                padding: 36px 24px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .cta-panel .btn-cta,
            .cta-panel .btn-outline {
                display: block;
                width: 100%;
                margin: 0 0 12px;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            padding: 64px 0 0;
            color: rgba(255, 255, 255, 0.75);
        }
        .site-footer .footer-brand-area {
            margin-bottom: 20px;
        }
        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-logo .brand-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .site-footer .footer-logo .brand-name {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
        }
        .site-footer .footer-logo .brand-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 260px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
        }
        .footer-contact-item i {
            color: var(--cta);
            font-size: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 48px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 48px 0 0;
            }
            .footer-bottom {
                margin-top: 32px;
            }
        }
        /* ===== Misc ===== */
        .bg-alt {
            background: var(--alt-bg);
        }
        section.no-pad-top {
            padding-top: 0;
        }
        section.no-pad-bottom {
            padding-bottom: 0;
        }
        @media (max-width: 576px) {
            body {
                font-size: 14px;
            }
            h1 {
                font-size: 24px;
            }
            .section-head .section-title {
                font-size: 19px;
            }
            .btn-cta,
            .btn-outline {
                width: 100%;
                display: flex;
                margin-bottom: 12px;
            }
        }