/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #e55a2b;
            --primary-light: rgba(255, 107, 53, 0.12);
            --secondary: #2E4A2A;
            --secondary-light: #3a5e35;
            --accent: #3B6A8A;
            --accent-light: #4a7fa0;
            --bg-light: #F7F7F7;
            --bg-white: #FAFAFA;
            --text-dark: #1a1a2e;
            --text-body: #2d2d44;
            --text-soft: #6b6b7a;
            --text-light: #8a8a9a;
            --border: #e0e0e6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
            --transition: all 0.25s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 1rem;
        }
        ul,
        ol {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5rem 0;
            line-height: 1.3;
            color: var(--text-dark);
            font-weight: 700;
        }
        h1 {
            font-size: 2.25rem;
        }
        h2 {
            font-size: 1.75rem;
        }
        h3 {
            font-size: 1.375rem;
        }
        p {
            margin: 0 0 1rem 0;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .header-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .header-logo span {
            color: var(--primary);
        }
        .header-logo a {
            color: inherit;
            text-decoration: none;
        }

        /* Nav panel - card style */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 0 8px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
            background: transparent;
            border: none;
            text-decoration: none;
        }
        .nav-item i {
            font-size: 1rem;
            color: var(--text-soft);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-cta i {
            font-size: 0.95rem;
        }

        /* Hamburger (mobile) */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 3px;
            transition: var(--transition);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 24px 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 12px;
            box-shadow: var(--shadow-lg);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-item {
            padding: 14px 16px;
            font-size: 1.05rem;
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu .nav-cta {
            margin-top: 16px;
            justify-content: center;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            overflow: hidden;
            padding: 80px 0 60px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 1;
            width: 100%;
        }
        .hero-content {
            max-width: 720px;
            color: #fff;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .hero-content h1 span {
            color: #ffd4b0;
        }
        .hero-content .subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 32px;
            line-height: 1.6;
            font-weight: 400;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.6rem;
            animation: bounceDown 2s infinite;
            cursor: pointer;
        }
        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-block-alt {
            background: #fff;
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap h2 {
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }
        .section-title-wrap h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            margin: 12px auto 0;
        }
        .section-title-wrap .section-desc {
            color: var(--text-soft);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 12px auto 0;
        }

        /* ===== Screenshot Carousel (Foundation Orbit) ===== */
        .orbit-container {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #fff;
        }
        .orbit-slide {
            padding: 20px;
            text-align: center;
        }
        .orbit-slide img {
            border-radius: var(--radius-sm);
            margin: 0 auto;
            max-height: 420px;
            object-fit: contain;
            width: auto;
        }
        .orbit-slide .slide-label {
            margin-top: 16px;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--text-dark);
        }
        .orbit-slide .slide-desc {
            color: var(--text-soft);
            font-size: 0.95rem;
            max-width: 480px;
            margin: 6px auto 0;
        }
        .orbit-bullets {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
        }
        .orbit-bullets button {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--border);
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .orbit-bullets button.is-active {
            background: var(--primary);
            transform: scale(1.2);
        }

        /* ===== System Requirements ===== */
        .req-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .req-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .req-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .req-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .req-info h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .req-info p {
            font-size: 0.9rem;
            color: var(--text-soft);
            margin: 0;
            line-height: 1.5;
        }
        .req-info ul {
            margin-top: 6px;
            padding-left: 0;
        }
        .req-info ul li {
            font-size: 0.88rem;
            color: var(--text-soft);
            padding: 2px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .req-info ul li i {
            color: var(--secondary);
            font-size: 0.75rem;
        }

        /* ===== Reviews Wall ===== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .review-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }
        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .review-user {
            flex: 1;
        }
        .review-user .name {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
        }
        .review-user .stars {
            color: #f5a623;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }
        .review-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }
        .review-more-link {
            text-align: center;
            margin-top: 32px;
        }
        .review-more-link a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--text-soft);
            border-bottom: 1px dashed var(--border);
            padding-bottom: 2px;
        }
        .review-more-link a:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ===== Download Buttons Group ===== */
        .download-group {
            text-align: center;
            padding: 48px 0 16px;
        }
        .download-group .dl-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 16px;
        }
        .dl-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            background: var(--secondary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            min-width: 180px;
            justify-content: center;
        }
        .dl-btn:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        .dl-btn i {
            font-size: 1.3rem;
        }
        .dl-btn.apple {
            background: #1a1a2e;
        }
        .dl-btn.apple:hover {
            background: #2a2a4e;
        }
        .dl-btn.android {
            background: #3B6A8A;
        }
        .dl-btn.android:hover {
            background: var(--accent-light);
        }
        .dl-btn.apk {
            background: var(--primary);
        }
        .dl-btn.apk:hover {
            background: var(--primary-dark);
        }
        .dl-safe-tip {
            color: var(--text-light);
            font-size: 0.85rem;
            margin-top: 8px;
        }
        .dl-safe-tip i {
            color: var(--secondary);
            margin-right: 4px;
        }

        /* ===== Latest News (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .news-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-light);
        }
        .news-card-body {
            padding: 20px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-body .cat-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .news-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .news-card-body h3 a {
            color: var(--text-dark);
        }
        .news-card-body h3 a:hover {
            color: var(--primary);
        }
        .news-card-body .summary {
            font-size: 0.9rem;
            color: var(--text-soft);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex: 1;
            line-height: 1.6;
        }
        .news-card-body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.83rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .news-card-body .meta .date i {
            margin-right: 4px;
        }
        .news-card-body .meta .read-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.85rem;
        }
        .news-card-body .meta .read-link:hover {
            color: var(--primary-dark);
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-soft);
            font-size: 1rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--border);
            margin-bottom: 12px;
            display: block;
        }
        .view-all-wrap {
            text-align: center;
            margin-top: 36px;
        }
        .view-all-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 2px solid transparent;
            padding-bottom: 2px;
        }
        .view-all-link:hover {
            border-bottom-color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 0.9rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-soft);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-primary-custom {
            background: #fff;
            color: var(--primary);
        }
        .cta-section .btn-primary-custom:hover {
            background: #f0f0f0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .footer-logo i {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
            max-width: 360px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--primary);
        }
        .footer-social h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
        }
        .footer-social .social-icons {
            display: flex;
            gap: 12px;
        }
        .footer-social .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .footer-social .social-icons a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .nav-panel {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta.desktop {
                display: none;
            }
            .mobile-menu .nav-cta {
                display: flex;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content .subtitle {
                font-size: 1.05rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 767px) {
            :root {
                --header-height: 60px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .hero-section {
                min-height: 70vh;
                padding: 60px 0 40px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content .subtitle {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                justify-content: center;
                padding: 12px 24px;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
            .req-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .download-group .dl-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .dl-btn {
                min-width: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .review-card {
                padding: 20px 16px;
            }
            .news-card-body {
                padding: 16px;
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .header-logo i {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                font-size: 0.9rem;
                padding: 10px 20px;
            }
            .section-title-wrap h2 {
                font-size: 1.2rem;
            }
            .container-custom {
                padding: 0 12px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }

        /* ===== Foundation Overrides ===== */
        .orbit {
            background: transparent;
        }
        .orbit-previous,
        .orbit-next {
            background: rgba(0, 0, 0, 0.3);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            transition: var(--transition);
        }
        .orbit-previous:hover,
        .orbit-next:hover {
            background: var(--primary);
        }
        .orbit-previous {
            left: 8px;
        }
        .orbit-next {
            right: 8px;
        }
        .orbit-container ul.orbit-container .orbit-slide {
            padding: 0;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-hover: #e55a2b;
            --primary-light: rgba(255, 107, 53, 0.12);
            --primary-glow: rgba(255, 107, 53, 0.25);
            --secondary: #2E4A2A;
            --secondary-light: #3d5f38;
            --accent-blue: #3B6A8A;
            --bg-body: #F7F7F7;
            --bg-card: #FFFFFF;
            --bg-soft: #FAFAFA;
            --bg-dark: #1E2A38;
            --bg-footer: #16212e;
            --text-dark: #1A1A2E;
            --text-body: #2d2d3a;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border-light: #ebedf0;
            --border-card: #eef0f2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
            --container-max: 1200px;
            --content-max: 800px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul,ol { list-style: none; }
        button,input,textarea { font-family: inherit; font-size: 1rem; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container-custom { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }
        h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
        h2 { font-size: 1.75rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { margin-bottom: 1rem; }
        .text-muted { color: var(--text-muted); }
        .text-small { font-size: 0.875rem; }
        .text-center { text-align: center; }

        /* ===== Header & Navigation (Card Panel) ===== */
        .site-header {
            background: var(--bg-card);
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-light);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 16px;
        }
        .header-logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }
        .header-logo a i { color: var(--primary); font-size: 1.6rem; }
        .header-logo a span { color: var(--primary); }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-soft);
            padding: 6px 10px;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
            flex-wrap: wrap;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-item i { font-size: 0.95rem; color: var(--text-light); transition: var(--transition); }
        .nav-item:hover { background: var(--primary-light); color: var(--primary); }
        .nav-item:hover i { color: var(--primary); }
        .nav-item.active { background: var(--primary); color: #fff; box-shadow: 0 2px 8px var(--primary-glow); }
        .nav-item.active i { color: #fff; }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border: 2px solid var(--primary);
            border-radius: var(--radius-md);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover { background: var(--primary); color: #fff; box-shadow: 0 4px 14px var(--primary-glow); }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: var(--bg-soft);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }
        .hamburger span { display: block; width: 26px; height: 3px; background: var(--text-dark); border-radius: 3px; transition: var(--transition); }
        .mobile-menu {
            display: none;
            background: var(--bg-card);
            padding: 16px 24px 24px;
            border-top: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu .nav-item { padding: 12px 18px; border-radius: var(--radius-sm); }
        .mobile-menu .nav-cta { margin-top: 8px; justify-content: center; }

        @media (max-width: 820px) {
            .nav-panel, .nav-cta.desktop { display: none; }
            .hamburger { display: flex; }
            .mobile-menu.open { display: flex; }
        }
        @media (min-width: 821px) {
            .mobile-menu { display: none !important; }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            background: var(--bg-soft);
            padding: 18px 0 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: var(--text-light); font-size: 0.7rem; }
        .breadcrumb .current { color: var(--text-dark); font-weight: 500; }

        /* ===== Article Main ===== */
        .article-section {
            padding: 48px 0 60px;
            background: var(--bg-body);
        }
        .article-wrapper {
            max-width: var(--content-max);
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px;
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-header h1 {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-meta .category-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-weight: 500;
            font-size: 0.8rem;
        }
        .article-meta i { margin-right: 5px; color: var(--text-light); }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body h2 { font-size: 1.6rem; margin: 32px 0 16px; color: var(--secondary); }
        .article-body h3 { font-size: 1.25rem; margin: 24px 0 12px; color: var(--text-dark); }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body img { margin: 24px auto; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 20px;
            margin: 20px 0;
            background: var(--bg-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body ul, .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 8px; }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-body .wp-block-image, .article-body figure { margin: 24px 0; }

        /* ===== Related Posts ===== */
        .related-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid var(--border-light);
        }
        .related-section h3 {
            font-size: 1.4rem;
            color: var(--secondary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h3 i { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body { padding: 14px 16px 18px; }
        .related-card .card-body h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .related-card .card-body .date {
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .related-card a { text-decoration: none; display: block; color: inherit; }
        .related-card a:hover h4 { color: var(--primary); }

        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 560px) {
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; }
        .not-found-box h2 { font-size: 1.6rem; color: var(--text-dark); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box a { display: inline-block; padding: 10px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-md); font-weight: 500; }
        .not-found-box a:hover { background: var(--primary-hover); }

        /* ===== Back Link ===== */
        .back-link-wrap {
            margin-top: 32px;
            text-align: center;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .back-link:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            color: #c8d0d9;
            padding: 48px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-logo i { color: var(--primary); margin-right: 8px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: #a0aab5; }
        .footer-links h4, .footer-social h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-links ul li a { color: #a0aab5; font-size: 0.9rem; }
        .footer-links ul li a:hover { color: var(--primary); }
        .social-icons { display: flex; gap: 16px; }
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: #a0aab5;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .social-icons a:hover { background: var(--primary); color: #fff; }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: #6a7480;
        }
        @media (max-width: 820px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-brand p { max-width: 100%; }
        }

        /* ===== Responsive Article ===== */
        @media (max-width: 860px) {
            .article-wrapper { padding: 28px 24px; }
            .article-header h1 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .article-wrapper { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-header h1 { font-size: 1.35rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
            .article-body { font-size: 0.98rem; }
        }

        /* ===== Utility ===== */
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #e55a2b;
            --primary-light: rgba(255, 107, 53, 0.12);
            --secondary: #2E4A2A;
            --secondary-light: #3d6138;
            --accent: #3B6A8A;
            --bg-body: #F7F7F7;
            --bg-card: #FFFFFF;
            --bg-dark: #1E2A38;
            --text-primary: #1A1A1A;
            --text-secondary: #4A4A4A;
            --text-weak: #7A7A7A;
            --text-light: #FFFFFF;
            --border-light: #E8E8E8;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.25s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 639px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            border-bottom: 1px solid var(--border-light);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .header-logo a i {
            color: var(--primary);
            font-size: 26px;
        }
        .header-logo a span {
            color: var(--secondary);
        }
        .header-logo a:hover {
            color: var(--text-primary);
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-body);
            padding: 4px 8px;
            border-radius: 40px;
        }
        .nav-panel .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-panel .nav-item i {
            font-size: 15px;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .nav-panel .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-panel .nav-item:hover i {
            color: var(--primary);
        }
        .nav-panel .nav-item.active {
            background: var(--primary);
            color: var(--text-light);
        }
        .nav-panel .nav-item.active i {
            color: var(--text-light);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border: 2px solid var(--primary);
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary);
            color: var(--text-light);
        }
        .nav-cta i {
            font-size: 16px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            background: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover span {
            background: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg-card);
            box-shadow: var(--shadow-md);
            padding: 16px 24px 24px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            flex-direction: column;
            gap: 8px;
            z-index: 999;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .mobile-menu .nav-item i {
            width: 20px;
            color: var(--text-weak);
        }
        .mobile-menu .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu .nav-item.active {
            background: var(--primary);
            color: var(--text-light);
        }
        .mobile-menu .nav-item.active i {
            color: var(--text-light);
        }
        .mobile-menu .nav-cta {
            margin-top: 12px;
            width: 100%;
            justify-content: center;
        }

        @media (max-width: 1023px) {
            .nav-panel,
            .nav-cta.desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--secondary) 0%, #1a2e18 40%, var(--primary) 100%);
            overflow: hidden;
            padding: 80px 0 60px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(46, 74, 42, 0.5) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 900;
            color: var(--text-light);
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-content h1 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .hero-content .hero-sub {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
            margin-bottom: 32px;
            font-weight: 400;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-buttons .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--text-light);
            font-size: 17px;
            font-weight: 700;
            border: 2px solid var(--primary);
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }
        .hero-buttons .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 107, 53, 0.45);
        }
        .hero-buttons .btn-primary:active {
            transform: scale(0.97);
        }
        .hero-buttons .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            background: transparent;
            color: var(--text-light);
            font-size: 17px;
            font-weight: 600;
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .hero-buttons .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-light);
            transform: translateY(-2px);
        }
        .hero-buttons .btn-outline:active {
            transform: scale(0.97);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            padding: 8px 20px;
            border-radius: 40px;
            color: var(--text-light);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-badge i {
            color: #ffdd57;
            animation: pulse-dot 1.6s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.85);
            }
        }
        .scroll-indicator {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 26px;
            animation: bounce-down 2s infinite;
            cursor: pointer;
            z-index: 3;
        }
        @keyframes bounce-down {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        @media (max-width: 1023px) {
            .hero-content h1 {
                font-size: 36px;
            }
            .hero-content .hero-sub {
                font-size: 17px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                padding: 14px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 639px) {
            .hero-section {
                min-height: 70vh;
                padding: 60px 0 40px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-sub {
                font-size: 15px;
                margin-bottom: 24px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-block .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-block .section-title p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto;
        }
        .section-block .section-title .title-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 30px;
            margin-bottom: 12px;
        }

        @media (max-width: 639px) {
            .section-block {
                padding: 56px 0;
            }
            .section-block .section-title h2 {
                font-size: 26px;
            }
            .section-block .section-title p {
                font-size: 15px;
            }
        }

        /* ===== Live Status Bar ===== */
        .live-status-bar {
            background: var(--secondary);
            padding: 14px 0;
            color: var(--text-light);
            border-bottom: 3px solid var(--primary);
        }
        .live-status-bar .container-custom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: space-between;
        }
        .live-status-left {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 15px;
            font-weight: 500;
        }
        .live-status-left .live-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background: #ff4444;
            border-radius: 50%;
            animation: pulse-dot 1.2s infinite;
        }
        .live-status-left .live-label {
            background: var(--primary);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .live-status-right {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .live-status-right .match-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.08);
            padding: 6px 16px;
            border-radius: 30px;
        }
        .live-status-right .match-item .vs {
            font-weight: 700;
            color: var(--primary);
        }
        .live-status-right .match-item .score {
            font-weight: 700;
            background: rgba(255, 255, 255, 0.15);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 15px;
        }
        @media (max-width: 639px) {
            .live-status-bar .container-custom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .live-status-right .match-item {
                font-size: 13px;
                padding: 4px 12px;
            }
        }

        /* ===== Cards ===== */
        .card-feature {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .card-feature:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .card-feature .card-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .card-feature h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card-feature p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .card-scenario {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .card-scenario:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-scenario .scenario-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .card-scenario .scenario-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: var(--text-light);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
        }
        .card-scenario .scenario-body {
            padding: 24px;
        }
        .card-scenario .scenario-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-scenario .scenario-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 639px) {
            .card-feature {
                padding: 24px 20px;
            }
            .card-feature .card-icon {
                width: 48px;
                height: 48px;
                font-size: 22px;
            }
            .card-feature h3 {
                font-size: 17px;
            }
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            counter-reset: step;
        }
        .step-item {
            counter-increment: step;
            text-align: center;
            padding: 32px 20px;
            position: relative;
        }
        .step-item .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-light);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 6px 16px rgba(255, 107, 53, 0.3);
            position: relative;
            z-index: 2;
        }
        .step-item .step-number::after {
            content: counter(step);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 240px;
            margin: 0 auto;
        }
        .step-item:not(:last-child)::before {
            content: '';
            position: absolute;
            top: 44px;
            right: -20%;
            width: 40%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            z-index: 1;
        }
        @media (max-width: 1023px) {
            .step-item:not(:last-child)::before {
                display: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a2e18 50%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 18px 44px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--text-light);
            font-size: 18px;
            font-weight: 700;
            border: 2px solid var(--primary);
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(255, 107, 53, 0.4);
        }
        .cta-section .btn-cta:hover {
            background: var(--text-light);
            color: var(--primary);
            border-color: var(--text-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 107, 53, 0.5);
        }
        .cta-section .btn-cta:active {
            transform: scale(0.97);
        }
        .cta-section .safe-tip {
            margin-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-section .safe-tip i {
            margin-right: 6px;
        }

        @media (max-width: 639px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 16px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .footer-logo i {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-links h4,
        .footer-social h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .social-icons {
            display: flex;
            gap: 16px;
        }
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 20px;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background: var(--primary);
            color: var(--text-light);
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 639px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-24 {
            gap: 24px;
        }

        /* ===== Responsive Grid Enhancements ===== */
        @media (max-width: 639px) {
            .grid-x>.cell {
                padding-left: 0.5rem;
                padding-right: 0.5rem;
            }
        }

        /* ===== Smooth reveal ===== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #e55a2b;
            --primary-light: #ff8a5c;
            --secondary: #2E4A2A;
            --secondary-light: #3d6138;
            --accent-blue: #3B6A8A;
            --bg-light: #F7F7F7;
            --bg-white: #FAFAFA;
            --text-dark: #1a1a2e;
            --text-body: #2d2d3a;
            --text-muted: #6b6b7a;
            --text-white: #ffffff;
            --border-color: #e8e8ee;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.25s ease;
            --font-sans: 'PingFang SC','Microsoft YaHei',Arial,Helvetica,sans-serif;
            --container-max: 1200px;
            --header-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input,textarea,select { font-family: inherit; font-size: inherit; }
        ul { list-style: none; padding: 0; margin: 0; }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Site Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--text-white);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .header-logo a i { color: var(--primary); font-size: 28px; }
        .header-logo a span { color: var(--secondary); }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-light);
            padding: 6px 12px;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-item i { font-size: 14px; color: var(--text-muted); transition: var(--transition); }
        .nav-item:hover { background: rgba(255,107,53,0.12); color: var(--primary); }
        .nav-item:hover i { color: var(--primary); }
        .nav-item.active { background: var(--primary); color: var(--text-white); box-shadow: 0 2px 8px rgba(255,107,53,0.25); }
        .nav-item.active i { color: var(--text-white); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover { background: var(--primary); color: var(--text-white); }
        .nav-cta i { font-size: 14px; }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
        }
        .hamburger span {
            width: 26px; height: 3px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: var(--text-white);
            padding: 20px 24px 30px;
            box-shadow: var(--shadow-md);
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }
        .mobile-menu .nav-item {
            padding: 12px 18px;
            font-size: 16px;
        }
        .mobile-menu .nav-cta {
            margin-top: 8px;
            justify-content: center;
        }
        .mobile-menu.open { display: flex; }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            margin-top: var(--header-height);
            background: linear-gradient(135deg, var(--secondary) 0%, #1a2e1a 50%, var(--secondary-light) 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 2px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .category-hero .hero-sub {
            font-size: 20px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .category-hero .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-white);
            background: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,53,0.35); }
        .btn-primary:active { transform: scale(0.97); }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-white);
            border: 2px solid var(--text-white);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            background: transparent;
        }
        .btn-outline-light:hover { background: rgba(255,255,255,0.15); color: var(--text-white); transform: translateY(-2px); }
        .btn-outline-light:active { transform: scale(0.97); }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block-alt {
            background: var(--bg-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ===== Feature Cards ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--text-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .feature-card .icon-wrap {
            width: 64px; height: 64px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255,107,53,0.10);
            border-radius: 50%;
            font-size: 28px;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap { background: var(--primary); color: var(--text-white); }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .scenarios-image img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .scenarios-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .scenario-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .scenario-item .num {
            flex-shrink: 0;
            width: 40px; height: 40px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
        }
        .scenario-item h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .scenario-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            counter-reset: step;
        }
        .step-card {
            background: var(--text-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-card .step-number {
            width: 56px; height: 56px;
            margin: 0 auto 18px;
            background: var(--secondary);
            color: var(--text-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
        }
        .step-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-card .step-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--text-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            text-align: left;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            font-size: 20px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.open .faq-question .faq-toggle { transform: rotate(45deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 24px;
            text-align: center;
            color: var(--text-white);
        }
        .cta-block h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-block p {
            font-size: 18px;
            opacity: 0.90;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 48px;
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            background: var(--text-white);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        .cta-block .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.20); color: var(--primary-dark); }
        .cta-block .btn-cta:active { transform: scale(0.97); }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E2A38;
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
        }
        .footer-brand .footer-logo {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo i { color: var(--primary); margin-right: 8px; }
        .footer-brand p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(255,255,255,0.70);
            max-width: 360px;
        }
        .footer-links h4, .footer-social h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-links ul li { margin-bottom: 10px; }
        .footer-links ul li a {
            color: rgba(255,255,255,0.70);
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-links ul li a:hover { color: var(--primary); padding-left: 4px; }
        .social-icons {
            display: flex;
            gap: 16px;
            margin-top: 8px;
        }
        .social-icons a {
            width: 44px; height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            color: rgba(255,255,255,0.75);
            font-size: 20px;
            transition: var(--transition);
        }
        .social-icons a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.50);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .scenarios-grid { grid-template-columns: 1fr; }
            .scenarios-image { order: -1; max-width: 500px; margin: 0 auto; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
            .nav-panel { display: none; }
            .nav-cta.desktop { display: none; }
            .hamburger { display: flex; }
            .category-hero h1 { font-size: 36px; }
            .category-hero .hero-sub { font-size: 18px; }
        }
        @media (max-width: 639px) {
            .container-custom { padding: 0 16px; }
            .section-block { padding: 56px 0; }
            .category-hero { min-height: 320px; padding: 100px 16px 60px; }
            .category-hero h1 { font-size: 28px; }
            .category-hero .hero-sub { font-size: 16px; }
            .section-title h2 { font-size: 26px; }
            .features-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .cta-block h2 { font-size: 28px; }
            .cta-block .btn-cta { width: 100%; justify-content: center; padding: 16px 24px; }
            .btn-primary, .btn-outline-light { width: 100%; justify-content: center; }
            .category-hero .hero-actions { flex-direction: column; align-items: stretch; }
            .faq-question { font-size: 15px; padding: 16px 18px; }
            .faq-answer p { font-size: 14px; }
            .feature-card { padding: 24px 18px; }
            .step-card { padding: 28px 20px; }
            .footer-brand p { max-width: 100%; }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== Misc ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }

        /* ===== Description under H1 ===== */
        .hero-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.80);
            max-width: 640px;
            margin: -8px auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #e55a2b;
            --primary-light: #ff8a5c;
            --secondary: #2E4A2A;
            --secondary-light: #3d6a38;
            --accent: #3B6A8A;
            --bg-light: #F7F7F7;
            --bg-white: #FAFAFA;
            --text-dark: #1a1a2e;
            --text-body: #333;
            --text-weak: #777;
            --border-light: #e8e8e8;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --header-h: 70px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            margin: 0;
            padding: 0;
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            line-height: 1.3;
            color: var(--text-dark);
            font-weight: 700;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: #fff;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
        }
        .header-logo a i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .header-logo a span {
            color: var(--secondary);
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            background: transparent;
        }
        .nav-item i {
            font-size: 1rem;
            color: var(--primary);
        }
        .nav-item:hover {
            background: rgba(255, 107, 53, 0.12);
            color: var(--primary-dark);
        }
        .nav-item.active {
            background: rgba(255, 107, 53, 0.18);
            color: var(--primary-dark);
            font-weight: 600;
        }
        .nav-item.active i {
            color: var(--primary-dark);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            border: 2px solid var(--primary);
            background: transparent;
            transition: var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.02);
        }
        .nav-cta i {
            font-size: 1rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .hamburger span {
            width: 26px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: var(--shadow-md);
            padding: 16px 24px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            z-index: 999;
            flex-direction: column;
            gap: 12px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-item,
        .mobile-menu .nav-cta {
            width: 100%;
            justify-content: center;
        }
        @media (max-width: 900px) {
            .nav-panel {
                display: none;
            }
            .nav-cta.desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .site-header .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (min-width: 901px) {
            .mobile-menu {
                display: none !important;
            }
            .hamburger {
                display: none !important;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            overflow: hidden;
            padding: 60px 24px;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .page-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.92);
            max-width: 640px;
            margin: 0 auto 20px;
            line-height: 1.6;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
            padding: 6px 20px;
            border-radius: 30px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
                padding: 40px 16px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
        }

        /* ===== Section ===== */
        .section-block {
            padding: 64px 0;
        }
        .section-block .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-block .section-title h2 {
            font-size: 2rem;
            color: var(--text-dark);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .section-block .section-title p {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 620px;
            margin: 0 auto;
        }
        .bg-white {
            background: #fff;
        }
        .bg-light {
            background: var(--bg-light);
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 40px 0;
            }
            .section-block .section-title h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== Cards ===== */
        .card-modern {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .card-modern:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-modern .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card-modern h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .card-modern p {
            font-size: 0.95rem;
            color: var(--text-weak);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step-counter;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.95rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }
        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            overflow: hidden;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            background: #fff;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(255, 107, 53, 0.05);
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item.open .faq-question .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background: #fafafa;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 18px 24px 24px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            padding: 64px 24px;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 40px 0;
        }
        .cta-block h2 {
            font-size: 2rem;
            color: #fff;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary,
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: scale(1.03);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid #fff;
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary-dark);
            transform: scale(1.03);
        }
        @media (max-width: 640px) {
            .cta-block {
                padding: 40px 16px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== Testimonials ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .testimonial-card .user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .user img {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            object-fit: cover;
            background: var(--bg-light);
        }
        .testimonial-card .user .name {
            font-weight: 600;
            font-size: 1rem;
        }
        .testimonial-card .stars {
            color: #f5b342;
            font-size: 0.95rem;
            letter-spacing: 2px;
        }
        .testimonial-card .text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Download Platforms ===== */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .platform-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .platform-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .platform-card .platform-icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .platform-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .platform-card p {
            font-size: 0.95rem;
            color: var(--text-weak);
            margin-bottom: 16px;
        }
        .platform-card .btn-sm {
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-block;
            background: var(--primary);
            color: #fff;
            transition: var(--transition);
        }
        .platform-card .btn-sm:hover {
            background: var(--primary-dark);
            transform: scale(1.03);
            color: #fff;
        }
        @media (max-width: 900px) {
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .platform-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== System Requirements ===== */
        .req-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .req-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .req-card .req-icon {
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .req-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .req-card ul {
            margin: 0;
            padding-left: 1.2rem;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .req-card ul li {
            margin-bottom: 4px;
        }
        @media (max-width: 768px) {
            .req-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-logo i {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin: 0;
        }
        .footer-links h4,
        .footer-social h4 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--primary);
        }
        .social-icons {
            display: flex;
            gap: 16px;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
        }

        /* ===== Safety note ===== */
        .safe-note {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 12px;
        }
        .safe-note i {
            color: var(--secondary);
            margin-right: 6px;
        }

        /* ===== Misc ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 520px) {
            .section-block .section-title h2 {
                font-size: 1.4rem;
            }
            .card-modern {
                padding: 20px 16px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .platform-card {
                padding: 24px 16px;
            }
            .req-card {
                flex-direction: column;
                padding: 20px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 14px 16px 18px;
            }
            .testimonial-card {
                padding: 18px 16px;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner p {
                font-size: 0.9rem;
            }
        }
        .foundation-fix .grid-x {
            margin-left: -12px;
            margin-right: -12px;
        }
        .foundation-fix .cell {
            padding-left: 12px;
            padding-right: 12px;
        }