/* roulang page: index */
:root {
            --primary: #4A90D9;
            --primary-dark: #3A7BC8;
            --secondary: #F5A623;
            --secondary-dark: #D4951A;
            --accent: #7ED321;
            --accent-dark: #6BBF1A;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text: #333333;
            --text-light: #6B7280;
            --text-lighter: #9CA3AF;
            --border: #E5E7EB;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --nav-height: 70px;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

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

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text);
            text-align: center;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px auto;
            line-height: 1.6;
        }

        .text-primary {
            color: var(--primary) !important;
        }
        .text-secondary {
            color: var(--secondary) !important;
        }
        .bg-primary-light {
            background-color: rgba(74, 144, 217, 0.08);
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--card-bg);
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .site-logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-logo i {
            font-size: 28px;
        }
        .site-logo:hover {
            color: var(--primary-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .header-actions .phone {
            font-size: 14px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header-actions .phone i {
            color: var(--primary);
        }
        .header-actions .btn-login {
            padding: 6px 20px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            color: var(--primary);
            background: transparent;
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
        }
        .header-actions .btn-login:hover {
            background: var(--primary);
            color: #fff;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 8px 0;
            gap: 8px;
        }

        .nav-channel {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
            justify-content: center;
        }
        .nav-channel li a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: var(--radius-lg);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-channel li a:hover {
            background: rgba(74, 144, 217, 0.10);
            color: var(--primary);
        }
        .nav-channel li a.active {
            background: rgba(74, 144, 217, 0.18);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-channel li a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
        }

        .mobile-menu {
            display: none;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            padding: 12px 20px;
        }
        .mobile-menu a {
            display: block;
            padding: 10px 0;
            color: var(--text-light);
            font-weight: 500;
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 600px;
            height: calc(100vh - 130px);
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(74, 144, 217, 0.85) 0%, rgba(74, 144, 217, 0.30) 60%, rgba(245, 166, 35, 0.10) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0,0,0,0.20) 0%, rgba(0,0,0,0.05) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 680px;
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
            letter-spacing: 1px;
        }
        .hero h1 span {
            color: var(--secondary);
        }
        .hero .lead {
            font-size: 20px;
            line-height: 1.7;
            color: rgba(255,255,255,0.90);
            margin-bottom: 36px;
            font-weight: 400;
        }
        .hero .btn-hero {
            display: inline-block;
            padding: 14px 40px;
            background: var(--secondary);
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.35);
        }
        .hero .btn-hero:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 166, 35, 0.45);
            color: #fff;
        }
        .hero .btn-hero:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 4px;
        }

        /* ===== 三步上手 ===== */
        .steps-section {
            background: var(--card-bg);
        }
        .step-card {
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius);
            background: var(--bg);
            transition: all var(--transition);
            position: relative;
            height: 100%;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(74, 144, 217, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            font-size: 36px;
            color: var(--primary);
        }
        .step-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .step-card p {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-col {
                position: relative;
            }
            .step-col:not(:last-child)::after {
                content: '→';
                position: absolute;
                right: -20px;
                top: 50%;
                transform: translateY(-50%);
                font-size: 28px;
                color: var(--border);
                font-weight: 300;
            }
        }

        /* ===== 案例证明 ===== */
        .cases-section {
            background: var(--bg);
        }
        .case-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .case-card .case-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .case-card .case-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .case-card .case-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .case-card .case-body p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .case-card .case-body .case-tag {
            display: inline-block;
            padding: 2px 14px;
            background: rgba(74, 144, 217, 0.10);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            align-self: flex-start;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--card-bg);
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            padding: 18px 24px;
            background: var(--bg);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(74, 144, 217, 0.06);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background: #F9FAFB;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 16px 24px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-light);
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg);
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .news-card .news-category {
            display: inline-block;
            padding: 2px 14px;
            background: rgba(245, 166, 35, 0.12);
            color: var(--secondary-dark);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-lighter);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .news-card .news-footer a {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
        }
        .news-card .news-footer a:hover {
            color: var(--primary-dark);
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-lighter);
        }
        .news-empty i {
            font-size: 56px;
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .news-empty p {
            font-size: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #3A7BC8 100%);
            color: #fff;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-section .cta-lead {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-buttons .btn-primary-cta {
            padding: 14px 40px;
            background: var(--secondary);
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.35);
        }
        .cta-buttons .btn-primary-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 166, 35, 0.45);
            color: #fff;
        }
        .cta-buttons .btn-secondary-cta {
            padding: 14px 40px;
            background: transparent;
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255,255,255,0.7);
            transition: all var(--transition);
        }
        .cta-buttons .btn-secondary-cta:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1F2937;
            color: #E5E7EB;
            padding: 60px 0 0 0;
        }
        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-brand i {
            color: var(--primary);
        }
        .site-footer .footer-desc {
            font-size: 14px;
            color: #9CA3AF;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 300px;
        }
        .site-footer h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #9CA3AF;
            font-size: 14px;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #9CA3AF;
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 14px;
            color: #6B7280;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 30px;
            }
            .hero h1 {
                font-size: 38px;
            }
            .hero .lead {
                font-size: 18px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
        }

        @media (max-width: 767px) {
            .header-brand-row {
                padding: 10px 0;
            }
            .header-actions .phone {
                display: none;
            }
            .header-channel-row {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu.open {
                display: block;
            }
            .hero {
                min-height: 500px;
                height: auto;
                padding: 80px 0 60px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero .lead {
                font-size: 16px;
            }
            .hero .btn-hero {
                padding: 12px 32px;
                font-size: 16px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 16px;
                margin-bottom: 32px;
            }
            .step-card {
                padding: 24px 16px;
                margin-bottom: 16px;
            }
            .step-col:not(:last-child)::after {
                display: none;
            }
            .case-card .case-img {
                height: 160px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-buttons .btn-primary-cta,
            .cta-buttons .btn-secondary-cta {
                padding: 12px 28px;
                font-size: 16px;
                width: 100%;
                max-width: 280px;
            }
            .site-footer {
                padding: 40px 0 0 0;
            }
            .site-footer .col-md-3 {
                margin-bottom: 32px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 12px 18px;
            }
        }

        @media (max-width: 575px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero .lead {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .news-card {
                padding: 18px;
            }
            .news-card h3 {
                font-size: 16px;
            }
        }

        /* ===== 辅助 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .badge-primary {
            background: rgba(74, 144, 217, 0.12);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        .bg-soft-primary {
            background: rgba(74, 144, 217, 0.06);
        }

        .gap-16 {
            gap: 16px;
        }

        .row.g-32 {
            --bs-gutter-x: 32px;
            --bs-gutter-y: 32px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #4A90D9;
            --primary-dark: #3A7BC8;
            --primary-light: rgba(74, 144, 217, 0.1);
            --secondary: #F5A623;
            --secondary-dark: #D4951A;
            --accent: #7ED321;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text: #333333;
            --text-light: #6B7280;
            --text-lighter: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #D1D5DB;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: 0.3s ease;
            --font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --section-padding: 80px 0;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: var(--section-padding);
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 40px 0;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--card-bg);
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .site-logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo i {
            font-size: 28px;
            color: var(--secondary);
        }
        .site-logo:hover {
            color: var(--primary);
            opacity: 0.9;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .header-actions .phone {
            color: var(--text-light);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header-actions .phone i {
            color: var(--primary);
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text);
            padding: 6px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .btn-login:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            transition: var(--transition);
        }
        .hamburger:hover {
            color: var(--primary);
        }

        .header-channel-row {
            padding: 8px 0;
        }

        .nav-channel {
            display: flex;
            list-style: none;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-channel li a {
            display: inline-block;
            padding: 6px 22px;
            border-radius: var(--radius-lg);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-channel li a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        .nav-channel li a.active {
            background: rgba(74, 144, 217, 0.2);
            color: var(--primary);
            border-color: rgba(74, 144, 217, 0.3);
            font-weight: 600;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            padding: 12px 20px;
            gap: 6px;
        }
        .mobile-menu a {
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu a.active {
            background: rgba(74, 144, 217, 0.2);
            color: var(--primary);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .header-actions .phone {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-channel-row {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
        }

        /* ===== Hero Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(74, 144, 217, 0.85) 0%, rgba(74, 144, 217, 0.40) 100%);
            z-index: 1;
        }
        .hero-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .hero-banner h1 {
            font-size: 48px;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 16px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }
        .hero-banner p {
            font-size: 20px;
            color: rgba(255,255,255,0.9);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .hero-banner .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            font-size: 18px;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.4);
        }
        .hero-banner .btn-hero:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.5);
            color: #fff;
        }

        @media (max-width: 768px) {
            .hero-banner {
                min-height: 320px;
            }
            .hero-banner h1 {
                font-size: 32px;
            }
            .hero-banner p {
                font-size: 16px;
            }
            .hero-banner .btn-hero {
                font-size: 16px;
                padding: 12px 30px;
            }
        }

        @media (max-width: 576px) {
            .hero-banner h1 {
                font-size: 26px;
            }
        }

        /* ===== General Section Styles ===== */
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            text-align: center;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 16px;
                margin-bottom: 32px;
            }
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            border: 1px solid rgba(0,0,0,0.04);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .icon-wrap {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 36px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }

        /* ===== Step Process ===== */
        .step-process {
            background: var(--card-bg);
            padding: var(--section-padding);
        }
        .step-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }
        .step-item {
            text-align: center;
            position: relative;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 24px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
        }
        .step-item h4 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .step-item p {
            font-size: 15px;
            color: var(--text-light);
            max-width: 280px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .step-arrow {
            position: absolute;
            top: 28px;
            right: -30px;
            font-size: 28px;
            color: var(--border);
            z-index: 1;
        }
        .step-grid .step-item:last-child .step-arrow {
            display: none;
        }

        @media (max-width: 992px) {
            .step-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                max-width: 400px;
                margin: 0 auto;
            }
            .step-arrow {
                display: none;
            }
        }

        /* ===== Cover Cards (Scenarios) ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .scenario-card .card-body {
            padding: 24px 20px;
        }
        .scenario-card .card-body h4 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .scenario-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: var(--transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 20px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        @media (max-width: 576px) {
            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #3A7BC8 100%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            font-size: 18px;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.4);
        }
        .btn-cta-primary:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.5);
            color: #fff;
        }
        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 18px;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255,255,255,0.6);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-cta-secondary:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .btn-cta-primary, .btn-cta-secondary {
                font-size: 16px;
                padding: 12px 28px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1F2937;
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
        }
        .site-footer .footer-brand {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand i {
            color: var(--secondary);
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.65);
            margin-bottom: 20px;
            max-width: 360px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .site-footer h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            margin-top: 0;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.65);
        }
        .site-footer ul li a {
            color: rgba(255,255,255,0.65);
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer ul li i {
            margin-right: 8px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.5);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .col-md-4, .site-footer .col-md-2, .site-footer .col-md-3 {
                margin-bottom: 24px;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
        }

        /* ===== Extra Utilities ===== */
        .g-32 {
            --bs-gutter-x: 32px;
        }
        .bg-white {
            background: var(--card-bg);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 16px 0 0;
            font-size: 14px;
            color: var(--text-lighter);
        }
        .breadcrumb-wrap a {
            color: var(--text-lighter);
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap span {
            margin: 0 6px;
            color: var(--border);
        }
        .breadcrumb-wrap .current {
            color: var(--text-light);
            font-weight: 500;
        }

        /* ===== Tag Badge ===== */
        .tag-badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== Responsive tweaks ===== */
        @media (max-width: 576px) {
            .hero-banner h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 24px;
            }
            .site-logo {
                font-size: 20px;
            }
            .site-logo i {
                font-size: 22px;
            }
            .btn-login {
                padding: 4px 14px;
                font-size: 13px;
            }
        }

/* roulang page: article */
:root {
            --primary: #4A90D9;
            --primary-dark: #3A7BC8;
            --primary-light: rgba(74, 144, 217, 0.1);
            --primary-20: rgba(74, 144, 217, 0.2);
            --secondary: #F5A623;
            --secondary-dark: #D4951A;
            --accent-green: #7ED321;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text: #333333;
            --text-light: #6B7280;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s ease;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            -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; }
        .container { max-width: 1200px; padding: 0 20px; }
        .section-padding { padding: 80px 0; }
        @media (max-width: 768px) { .section-padding { padding: 40px 0; } }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--card-bg);
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 8px;
        }
        .site-logo {
            font-size: 24px;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .site-logo i { font-size: 28px; color: var(--secondary); }
        .site-logo:hover { color: var(--primary); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .header-actions .phone {
            color: var(--text-light);
            font-size: 14px;
            font-weight: 500;
        }
        .header-actions .phone i { color: var(--primary); margin-right: 6px; }
        .btn-login {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .btn-login:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
        }
        .header-channel-row {
            border-top: 1px solid var(--border);
            padding: 8px 0 12px;
        }
        .nav-channel {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            justify-content: center;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-channel li a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: var(--radius-lg);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            background: transparent;
        }
        .nav-channel li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-channel li a.active {
            background: var(--primary-20);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            padding: 12px 20px 20px;
            gap: 8px;
        }
        .mobile-menu a {
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu.open { display: flex; }
        @media (max-width: 768px) {
            .header-actions .phone { display: none; }
            .btn-login { padding: 6px 14px; font-size: 13px; }
            .hamburger { display: block; }
            .header-channel-row { display: none; }
            .site-logo { font-size: 20px; }
            .site-logo i { font-size: 24px; }
        }
        @media (max-width: 576px) {
            .header-brand-row { padding: 10px 0 6px; }
            .site-logo { font-size: 18px; }
            .site-logo i { font-size: 20px; }
            .btn-login { font-size: 12px; padding: 4px 12px; }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb-bar .breadcrumb {
            background: transparent;
            margin: 0;
            padding: 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb-bar .breadcrumb a { color: var(--text-muted); }
        .breadcrumb-bar .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb-bar .breadcrumb .active { color: var(--text-light); }
        .breadcrumb-item+.breadcrumb-item::before { color: var(--text-muted); }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-container {
            max-width: 800px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 48px 56px;
        }
        .article-header {
            margin-bottom: 36px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
        }
        .article-header h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            font-size: 14px;
            color: var(--text-light);
        }
        .article-meta i { margin-right: 6px; color: var(--primary); }
        .article-meta .category-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: var(--radius-lg);
            font-size: 13px;
            font-weight: 500;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--text);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px auto;
            box-shadow: var(--shadow);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body ul, .article-body ol {
            padding-left: 24px;
            margin-bottom: 20px;
        }
        .article-body li { margin-bottom: 8px; }
        .article-body a { text-decoration: underline; }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 24px;
            color: var(--text);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ===== Related Posts ===== */
        .related-section {
            max-width: 800px;
            margin: 48px auto 0;
        }
        .related-section h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h3 i { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px 24px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .related-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card h4 a { color: var(--text); }
        .related-card h4 a:hover { color: var(--primary); }
        .related-card p {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .meta-info {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .meta-info i { margin-right: 4px; }
        .related-card .meta-info .tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 0 10px;
            border-radius: var(--radius-lg);
            font-size: 11px;
        }
        .back-link-wrap {
            text-align: center;
            margin-top: 40px;
        }
        .back-link-wrap .btn-back-home {
            display: inline-block;
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 10px 32px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: var(--transition);
        }
        .back-link-wrap .btn-back-home:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        @media (max-width: 768px) {
            .article-container { padding: 28px 24px; }
            .article-header h1 { font-size: 24px; }
            .article-body h2 { font-size: 22px; }
            .article-body h3 { font-size: 18px; }
            .related-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            .article-main { padding: 32px 0 48px; }
            .article-container { padding: 20px 16px; border-radius: var(--radius-sm); }
            .article-header h1 { font-size: 20px; }
            .article-meta { gap: 10px; font-size: 13px; }
            .article-body { font-size: 15px; }
            .article-body h2 { font-size: 20px; }
            .related-card { padding: 16px; }
            .back-link-wrap .btn-back-home { width: 100%; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1F2937;
            color: #e5e7eb;
            padding: 60px 0 0;
            font-size: 14px;
        }
        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand i { color: var(--secondary); font-size: 24px; }
        .site-footer .footer-desc {
            color: #9CA3AF;
            line-height: 1.8;
            margin-bottom: 20px;
            font-size: 14px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: #d1d5db;
            font-size: 18px;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: #9CA3AF;
            transition: var(--transition);
        }
        .site-footer ul li a:hover { color: #fff; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            color: #6B7280;
            font-size: 13px;
        }
        .row.g-32 { margin: -16px; }
        .row.g-32 > [class*="col-"] { padding: 16px; }
        @media (max-width: 768px) {
            .site-footer { padding: 40px 0 0; }
            .site-footer .footer-brand { font-size: 20px; }
            .site-footer h5 { margin-top: 16px; }
        }
        @media (max-width: 576px) {
            .site-footer { font-size: 13px; }
            .site-footer .footer-bottom { font-size: 12px; }
        }

        /* ===== Utility ===== */
        .text-primary { color: var(--primary) !important; }
        .bg-primary-light { background: var(--primary-light); }
        .shadow-card { box-shadow: var(--shadow); }
        .rounded-card { border-radius: var(--radius); }