/* roulang page: index */
:root {
            --primary-blue-light: #EAF2FB;
            --primary-blue-mid: #D6E6F7;
            --primary-blue: #2F6CA3;
            --primary-blue-hover: #2A5E8F;
            --primary-blue-focus: #3A7ABF;
            --accent-orange: #E88A3A;
            --accent-amber: #D98A2B;
            --bg-gray: #F5F7F9;
            --text-heading: #1A2733;
            --text-body: #3A4A5A;
            --text-muted: #6A7A8A;
            --border-light: #DFE8F0;
            --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
            --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
            --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 20px;
            --radius-img: 16px;
            --space-section: 80px;
            --space-card: 28px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: #ffffff;
            line-height: 1.75;
            font-size: 15px;
            min-width: 320px;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container-custom {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .logo-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--text-heading);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            transition: var(--transition-base);
        }

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

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

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-amber);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 138, 58, 0.30);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: #fff;
            color: var(--primary-blue);
            border: 1.5px solid var(--primary-blue);
        }

        .btn-outline:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.12);
        }

        .btn-outline:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 12px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
        }

        /* Mobile Nav Drawer */
        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: 0 12px 30px rgba(47, 108, 163, 0.12);
            padding: 16px 24px 24px;
            z-index: 190;
            flex-direction: column;
            gap: 4px;
            border-top: 1px solid var(--border-light);
        }

        .mobile-nav-drawer.open {
            display: flex;
        }

        .mobile-nav-drawer a {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
        }

        /* ========== Hero Section ========== */
        .hero-section {
            background: linear-gradient(180deg, #F7FAFD 0%, #fff 100%);
            padding: 48px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(47, 108, 163, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            width: fit-content;
            letter-spacing: 0.01em;
        }

        .hero-tag .tag-dot {
            width: 6px;
            height: 6px;
            background: var(--accent-orange);
            border-radius: 50%;
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.6);
            }
        }

        .hero-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            margin: 0;
        }

        .hero-title .highlight {
            color: var(--primary-blue);
            position: relative;
        }

        .hero-title .highlight-accent {
            color: var(--accent-orange);
        }

        .hero-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 520px;
            margin: 0;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 4px;
        }

        .hero-trust-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 8px;
        }

        .trust-badge {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .trust-badge i {
            color: var(--primary-blue);
            font-size: 14px;
        }

        .hero-dot-carousel {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }

        .hero-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--border-light);
            transition: var(--transition-base);
            cursor: pointer;
            border: none;
        }

        .hero-dot.active {
            background: var(--primary-blue);
            width: 24px;
            border-radius: 4px;
        }

        .hero-dot:hover {
            background: var(--primary-blue-focus);
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 20px;
            align-items: center;
        }

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(47, 108, 163, 0.15);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: 20px;
            transition: transform 0.5s ease;
        }

        .hero-image-wrapper:hover img {
            transform: scale(1.03);
        }

        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            background: linear-gradient(180deg, transparent 0%, rgba(26, 39, 51, 0.75) 100%);
            border-radius: 0 0 20px 20px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 12px;
        }

        .hero-overlay-text {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .hero-overlay-badge {
            background: var(--accent-orange);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-badge);
            white-space: nowrap;
        }

        /* Countdown Ring */
        .countdown-ring-container {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            padding: 16px 24px;
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            width: 100%;
            max-width: 420px;
        }

        .countdown-ring {
            position: relative;
            width: 88px;
            height: 88px;
            flex-shrink: 0;
        }

        .countdown-ring svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }

        .countdown-ring .ring-bg {
            fill: none;
            stroke: var(--primary-blue-light);
            stroke-width: 6;
        }

        .countdown-ring .ring-progress {
            fill: none;
            stroke: var(--accent-orange);
            stroke-width: 6;
            stroke-linecap: round;
            stroke-dasharray: 264;
            stroke-dashoffset: 88;
            transition: stroke-dashoffset 0.6s ease;
        }

        .countdown-ring .ring-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .countdown-ring .ring-text .ring-number {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.2;
        }

        .countdown-info {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .countdown-info .countdown-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .countdown-info .countdown-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        .countdown-info .countdown-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .countdown-info .countdown-link:hover {
            color: var(--primary-blue-hover);
        }

        /* ========== Section Common ========== */
        .section-block {
            padding: var(--space-section) 0;
        }

        .section-block.bg-light {
            background: var(--bg-gray);
        }

        .section-block.bg-blue-light {
            background: linear-gradient(180deg, var(--primary-blue-light) 0%, #F5F9FD 100%);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-blue);
            background: var(--primary-blue-light);
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin: 0 0 10px;
            letter-spacing: 0.01em;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.8;
            margin: 0;
        }

        /* ========== Onboarding Steps ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(223, 232, 240, 0.5);
        }

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

        .step-number {
            width: 40px;
            height: 40px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            transition: var(--transition-base);
        }

        .step-card:hover .step-number {
            background: var(--accent-orange);
        }

        .step-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== Selling Points ========== */
        .selling-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .selling-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            border: 1px solid rgba(223, 232, 240, 0.5);
        }

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

        .selling-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            transition: var(--transition-base);
        }

        .selling-card:hover .selling-icon {
            background: var(--primary-blue);
            color: #fff;
        }

        .selling-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .selling-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0 0 16px;
        }

        .selling-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-base);
        }

        .selling-link:hover {
            color: var(--accent-orange);
            gap: 10px;
        }

        /* ========== Scenario Demo ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-top: 32px;
        }

        .scenario-image-wrapper {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .scenario-image-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: 20px;
            transition: transform 0.5s ease;
        }

        .scenario-image-wrapper:hover img {
            transform: scale(1.04);
        }

        .scenario-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-blue);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
        }

        .scenario-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .scenario-step {
            display: flex;
            gap: 16px;
            padding: 16px 20px;
            background: #fff;
            border-radius: 12px;
            border-left: 3px solid var(--primary-blue);
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.06);
            transition: var(--transition-base);
        }

        .scenario-step:hover {
            border-left-color: var(--accent-orange);
            box-shadow: var(--shadow-card);
        }

        .scenario-step-num {
            width: 32px;
            height: 32px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .scenario-step-text h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .scenario-step-text p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== Reviews ========== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .review-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(223, 232, 240, 0.5);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .review-stars {
            color: #F5A623;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            margin: 0;
            flex-grow: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .review-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .review-source {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== News ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            margin-top: 32px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition-base);
            text-decoration: none;
        }

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

        .news-item:hover {
            background: #F9FBFD;
        }

        .news-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
            margin-top: 2px;
        }

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

        .news-title-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            display: block;
            margin-bottom: 4px;
            transition: var(--transition-base);
        }

        .news-item:hover .news-title-link {
            color: var(--primary-blue);
        }

        .news-summary {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .news-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        .news-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .news-side-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .news-side-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .news-side-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            text-decoration: none;
            transition: var(--transition-base);
        }

        .news-side-item:last-child {
            border-bottom: none;
        }

        .news-side-item:hover {
            padding-left: 6px;
        }

        .news-side-item img {
            width: 64px;
            height: 48px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-side-item .side-item-title {
            font-size: 13.5px;
            font-weight: 500;
            color: var(--text-heading);
            line-height: 1.4;
            display: block;
        }

        .news-side-item .side-item-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== Partner Tags ========== */
        .partner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .partner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-badge);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
            cursor: default;
        }

        .partner-tag:hover {
            border-color: var(--primary-blue);
            color: var(--primary-blue);
            box-shadow: 0 4px 12px rgba(47, 108, 163, 0.08);
        }

        .partner-tag i {
            color: var(--primary-blue);
            font-size: 14px;
        }

        /* ========== Brand Intro ========== */
        .brand-intro-block {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
            margin-top: 32px;
        }

        .brand-intro-block p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .brand-intro-block p:last-child {
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.05);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--primary-blue);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            transition: var(--transition-base);
            text-align: left;
            min-height: 56px;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition-base);
            transform: rotate(0deg);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary-blue);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

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

        /* ========== CTA Form ========== */
        .cta-section {
            background: linear-gradient(180deg, var(--primary-blue-light) 0%, #F0F6FC 100%);
            padding: var(--space-section) 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-info h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .cta-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .cta-contact-item i {
            width: 32px;
            height: 32px;
            background: #fff;
            color: var(--primary-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.08);
        }

        .cta-form-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .cta-form-card .form-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .cta-form-card .form-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            height: 48px;
            border: 1.5px solid var(--border-light);
            border-radius: 8px;
            background: #F9FBFD;
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-body);
            font-family: var(--font-family);
            transition: var(--transition-base);
        }

        .form-group textarea {
            height: 100px;
            padding-top: 12px;
            padding-bottom: 12px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(47, 108, 163, 0.12);
            outline: none;
            background: #fff;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #A0B0C0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #F0F4F8;
            padding: 48px 0 24px;
            border-top: 1px solid var(--border-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--primary-blue);
            padding-left: 4px;
        }

        .footer-contact-item {
            display: flex;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 4px 0;
            align-items: center;
        }

        .footer-contact-item i {
            color: var(--primary-blue);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom-links a {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 64px;
            }

            .hero-title {
                font-size: 32px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .selling-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .news-layout {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 48px;
                --space-card: 20px;
            }

            .site-header {
                height: 56px;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .header-cta .btn-outline {
                display: none;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-title {
                font-size: 28px;
            }

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

            .hero-image-wrapper img {
                height: 220px;
            }

            .hero-cta-group {
                gap: 10px;
            }

            .hero-trust-badges {
                gap: 10px;
            }

            .trust-badge {
                font-size: 12px;
            }

            .countdown-ring-container {
                padding: 12px 16px;
                gap: 14px;
            }

            .countdown-ring {
                width: 64px;
                height: 64px;
            }

            .countdown-ring .ring-text {
                font-size: 10px;
            }

            .countdown-ring .ring-text .ring-number {
                font-size: 16px;
            }

            .section-title {
                font-size: 22px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .selling-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .scenario-image-wrapper img {
                height: 240px;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .news-item {
                padding: 16px;
                gap: 12px;
            }

            .news-item .news-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .brand-intro-block {
                padding: 24px 20px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
                min-height: 48px;
            }

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

            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 24px;
            }

            .hero-image-wrapper img {
                height: 180px;
            }

            .btn-lg {
                padding: 12px 20px;
                font-size: 14px;
            }

            .section-title {
                font-size: 20px;
            }
        }

/* roulang page: category2 */
:root {
            --primary-blue-light: #EAF2FB;
            --primary-blue-mid: #D6E6F7;
            --primary-blue: #2F6CA3;
            --primary-blue-hover: #2A5E8F;
            --primary-blue-focus: #3A7ABF;
            --accent-orange: #E88A3A;
            --accent-amber: #D98A2B;
            --bg-gray: #F5F7F9;
            --text-heading: #1A2733;
            --text-body: #3A4A5A;
            --text-muted: #6A7A8A;
            --border-light: #DFE8F0;
            --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
            --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
            --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 20px;
            --radius-img: 16px;
            --space-section: 80px;
            --space-card: 28px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: #ffffff;
            line-height: 1.75;
            font-size: 15px;
            min-width: 320px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container-custom {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .logo-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--text-heading);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            transition: var(--transition-base);
        }

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

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

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-amber);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 138, 58, 0.25);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: #fff;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }

        .btn-outline:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue-hover);
        }

        .btn-accent-outline {
            background: #fff;
            color: var(--accent-orange);
            border: 1px solid var(--accent-orange);
        }

        .btn-accent-outline:hover {
            background: #FFF5EB;
            color: var(--accent-amber);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 12px 28px;
            font-size: 16px;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            background: var(--primary-blue-light);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-list li:not(:last-child)::after {
            content: ">";
            color: var(--text-muted);
            font-size: 12px;
            margin-left: 2px;
        }

        .breadcrumb-list a {
            color: var(--primary-blue);
            font-weight: 500;
        }

        .breadcrumb-list a:hover {
            color: var(--primary-blue-hover);
        }

        .breadcrumb-list .current {
            color: var(--text-body);
            font-weight: 600;
        }

        /* ========== Category Header ========== */
        .category-header {
            background: var(--primary-blue-light);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin: 0 0 12px;
        }

        .category-header .subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 680px;
            margin: 0 0 18px;
        }

        .category-header .header-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }

        .category-header .header-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ========== Filter Tags ========== */
        .filter-section {
            padding: 24px 0 8px;
            background: #fff;
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding-bottom: 4px;
        }

        .filter-tags::-webkit-scrollbar {
            display: none;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-gray);
            border: 1px solid var(--border-light);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .filter-tag:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-color: var(--primary-blue-mid);
        }

        .filter-tag.active {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
            font-weight: 600;
        }

        /* ========== Card Grid ========== */
        .card-grid-section {
            padding: 28px 0 48px;
            background: #fff;
        }

        .card-grid-two {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .technique-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }

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

        .technique-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-gray);
        }

        .technique-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .technique-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary-blue);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-badge);
            backdrop-filter: blur(6px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }

        .technique-card .card-badge.badge-orange {
            background: rgba(232, 138, 58, 0.92);
            color: #fff;
        }

        .technique-card .card-badge.badge-blue {
            background: rgba(47, 108, 163, 0.92);
            color: #fff;
        }

        .technique-card .card-content {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .technique-card .card-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 8px;
            line-height: 1.45;
        }

        .technique-card .card-content .card-excerpt {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }

        .technique-card .card-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .technique-card .card-footer-meta .read-time {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .load-more-wrap {
            text-align: center;
            padding: 12px 0 20px;
        }

        .load-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 32px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            background: #fff;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .load-more-btn:hover {
            background: var(--primary-blue-light);
        }

        .load-more-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            background: var(--bg-gray);
            border-color: var(--border-light);
            color: var(--text-muted);
        }

        .hidden-card {
            display: none;
        }

        .hidden-card.visible {
            display: flex;
        }

        /* ========== Featured Banner ========== */
        .featured-banner-section {
            padding: var(--space-section) 0;
            background: var(--bg-gray);
        }

        .featured-banner {
            background: linear-gradient(135deg, #EAF2FB 0%, #D6E6F7 50%, #C4DCF2 100%);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            align-items: stretch;
            min-height: 320px;
            box-shadow: var(--shadow-card);
        }

        .featured-banner .banner-text {
            flex: 1;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-banner .banner-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

        .featured-banner .banner-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0 0 16px;
            max-width: 480px;
        }

        .featured-banner .banner-image {
            flex: 1;
            min-height: 320px;
            position: relative;
            overflow: hidden;
        }

        .featured-banner .banner-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-banner .banner-image::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(26, 39, 51, 0.15) 0%, rgba(26, 39, 51, 0.35) 100%);
            pointer-events: none;
        }

        /* ========== Stats Section ========== */
        .stats-section {
            padding: var(--space-section) 0;
            background: #fff;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            background: var(--bg-gray);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
        }

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

        .stat-item .stat-value {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-value.orange {
            color: var(--accent-orange);
        }

        .stat-item .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .stat-item .stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== Steps Section ========== */
        .steps-section {
            padding: var(--space-section) 0;
            background: var(--primary-blue-light);
        }

        .steps-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .steps-section .section-subtitle {
            font-size: 16px;
            color: var(--text-body);
            max-width: 600px;
            margin: 0 0 36px;
            line-height: 1.7;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 26px 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
            position: relative;
        }

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

        .step-card .step-number {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .step-card .step-number.orange {
            background: var(--accent-orange);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 8px;
            line-height: 1.4;
        }

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

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

        .faq-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .faq-section .section-subtitle {
            font-size: 16px;
            color: var(--text-body);
            max-width: 560px;
            margin: 0 0 32px;
            line-height: 1.7;
        }

        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            margin-bottom: 10px;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--primary-blue-mid);
            box-shadow: 0 4px 16px rgba(47, 108, 163, 0.06);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition-base);
            line-height: 1.5;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            transition: transform 0.3s ease;
            font-size: 16px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            margin: 0;
            padding-top: 4px;
            border-top: 1px solid var(--border-light);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: var(--space-section) 0;
            background: var(--primary-blue-light);
        }

        .cta-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            border: 1px solid var(--border-light);
        }

        .cta-card .cta-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .cta-card .cta-info p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0 0 20px;
        }

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

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

        .cta-card .cta-info .contact-list li i {
            color: var(--primary-blue);
            width: 20px;
            text-align: center;
        }

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

        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            font-family: var(--font-family);
            color: var(--text-body);
            background: #F9FBFD;
            transition: var(--transition-base);
            box-sizing: border-box;
        }

        .cta-form textarea {
            height: auto;
            min-height: 90px;
            resize: vertical;
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(47, 108, 163, 0.12);
            outline: none;
        }

        .cta-form .btn {
            width: 100%;
            height: 48px;
            font-size: 15px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1A2733;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 20px;
            font-size: 14px;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition-base);
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            display: block;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 260px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            margin-bottom: 8px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact-item i {
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-bottom-links a {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* ========== Mobile Nav Toggle ========== */
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: var(--transition-base);
        }

        .mobile-nav-toggle:hover {
            background: var(--primary-blue-light);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-card {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 28px;
            }
            .featured-banner {
                flex-direction: column;
            }
            .featured-banner .banner-image {
                min-height: 220px;
            }
            .card-grid-two {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 56px;
            }
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                display: none;
            }
            .main-nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                box-shadow: 0 8px 24px rgba(47, 108, 163, 0.12);
                padding: 12px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                z-index: 150;
                overflow-y: auto;
                max-height: calc(100vh - 56px);
            }
            .main-nav.mobile-open a {
                width: 100%;
                padding: 12px;
                font-size: 15px;
            }
            .mobile-nav-toggle {
                display: block;
            }
            .header-cta .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .category-header {
                padding: 32px 0 28px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .category-header .subtitle {
                font-size: 14px;
            }
            .card-grid-two {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-item .stat-value {
                font-size: 26px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .featured-banner .banner-text {
                padding: 24px;
            }
            .featured-banner .banner-text h2 {
                font-size: 22px;
            }
            .cta-card {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            :root {
                --space-section: 48px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .card-grid-two {
                gap: 12px;
            }
            .technique-card .card-content {
                padding: 16px 14px 14px;
            }
            .technique-card .card-content h3 {
                font-size: 16px;
            }
            .technique-card .card-content .card-excerpt {
                font-size: 13px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .filter-tag {
                padding: 7px 14px;
                font-size: 12px;
            }
            .breadcrumb-list {
                font-size: 12px;
            }
            .cta-form input,
            .cta-form textarea {
                height: 44px;
                font-size: 13px;
            }
            .btn-lg {
                padding: 10px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
  --primary-blue-light: #EAF2FB;
  --primary-blue-mid: #D6E6F7;
  --primary-blue: #2F6CA3;
  --primary-blue-hover: #2A5E8F;
  --primary-blue-focus: #3A7ABF;
  --accent-orange: #E88A3A;
  --accent-amber: #D98A2B;
  --bg-gray: #F5F7F9;
  --text-heading: #1A2733;
  --text-body: #3A4A5A;
  --text-muted: #6A7A8A;
  --border-light: #DFE8F0;
  --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
  --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
  --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-badge: 20px;
  --radius-img: 16px;
  --space-section: 72px;
  --space-card: 28px;
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-base: all 0.25s ease;
  --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--text-body);
  background: #ffffff;
  line-height: 1.75;
  font-size: 15px;
  min-width: 320px;
  overflow-x: hidden;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  color: var(--text-heading);
  line-height: 1.3;
  margin: 0 0 12px;
  font-weight: 700;
}

p {
  margin: 0 0 14px;
}

.container-custom {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header / Nav ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-nav);
  height: 64px;
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.logo-brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: 0.02em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-brand .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-blue);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-brand:hover {
  color: var(--text-heading);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 12px;
  border-radius: 8px;
  white-space: nowrap;
  transition: var(--transition-base);
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: var(--text-heading);
  padding: 4px 6px;
  border-radius: 6px;
  transition: var(--transition-base);
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: var(--primary-blue-light);
  color: var(--primary-blue);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-accent {
  background: var(--accent-orange);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-amber);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(232, 138, 58, 0.25);
}

.btn-accent:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-outline {
  background: #fff;
  color: var(--primary-blue);
  border: 1.5px solid var(--primary-blue);
}

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

.btn-outline:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* ========== Breadcrumb ========== */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 18px 0;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--text-muted);
  font-weight: 500;
}

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

.breadcrumb-sep {
  color: var(--text-muted);
  opacity: 0.6;
}

.breadcrumb-current {
  color: var(--text-heading);
  font-weight: 600;
}

/* ========== Category Hero ========== */
.category-hero {
  background: var(--primary-blue-light);
  border-radius: 20px;
  padding: 40px 44px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.category-hero::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 180px;
  height: 180px;
  background: rgba(47, 108, 163, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.category-hero-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  line-height: 1.25;
  position: relative;
  z-index: 1;
}

.category-hero-subtitle {
  font-size: 17px;
  color: var(--text-body);
  max-width: 680px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.category-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: var(--text-body);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-badge);
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.hero-badge i {
  color: var(--primary-blue);
  font-size: 14px;
}

/* ========== Section Titles ========== */
.section-title-wrap {
  margin-bottom: 32px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
  line-height: 1.35;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.75;
}

/* ========== Featured Card ========== */
.featured-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-bottom: 48px;
  transition: var(--transition-smooth);
}

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

.featured-img {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  background: var(--primary-blue-mid);
}

.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

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

.featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent-orange);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.05em;
  z-index: 2;
}

.featured-content {
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  line-height: 1.4;
}

.featured-content p {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 20px;
}

.featured-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.featured-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.featured-meta i {
  color: var(--primary-blue);
}

/* ========== Value Props ========== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.value-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  text-align: left;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 10px rgba(47, 108, 163, 0.04);
}

.value-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
  border-color: var(--primary-blue-mid);
}

.value-card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

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

/* ========== Article List ========== */
.article-list-wrap {
  margin-bottom: 48px;
}

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

.article-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 18px 20px;
  align-items: center;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 8px rgba(47, 108, 163, 0.04);
}

.article-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
  border-color: var(--primary-blue-mid);
}

.article-thumb {
  width: 100px;
  height: 76px;
  background: var(--primary-blue-mid);
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}

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

.article-info {
  min-width: 0;
}

.article-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  margin-bottom: 6px;
}

.article-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 6px;
  line-height: 1.4;
}

.article-info p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-meta i {
  color: var(--primary-blue);
  opacity: 0.7;
}

.article-link {
  color: var(--primary-blue);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-base);
}

.article-link:hover {
  color: var(--primary-blue-hover);
  gap: 8px;
}

/* ========== Steps Module ========== */
.steps-section {
  background: var(--bg-gray);
  border-radius: 20px;
  padding: 48px 44px;
  margin-bottom: 48px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.step-item {
  background: #fff;
  border-radius: 14px;
  padding: 24px 20px;
  position: relative;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 8px rgba(47, 108, 163, 0.04);
  border: 1px solid var(--border-light);
}

.step-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary-blue);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 14px;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

/* ========== FAQ Accordion ========== */
.faq-section {
  margin-bottom: 48px;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary-blue-mid);
}

.faq-item.active {
  border-color: var(--primary-blue);
  box-shadow: 0 6px 24px rgba(47, 108, 163, 0.10);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  line-height: 1.5;
  transition: var(--transition-base);
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  font-size: 13px;
  transition: var(--transition-smooth);
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
  background: var(--primary-blue);
  color: #fff;
}

.faq-answer {
  display: none;
  padding: 0 24px 20px 24px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.75;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ========== CTA Section ========== */
.cta-section {
  background: var(--primary-blue-light);
  border-radius: 20px;
  padding: 48px 44px;
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.cta-info h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 14px;
  line-height: 1.4;
}

.cta-info p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 20px;
}

.cta-contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
}

.cta-contact-item i {
  width: 32px;
  height: 32px;
  background: #fff;
  color: var(--primary-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(47, 108, 163, 0.08);
}

.cta-form {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}

.cta-form h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 20px;
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  font-family: var(--font-family);
  font-size: 14px;
  color: var(--text-body);
  background: #F9FBFD;
  border: 1.5px solid var(--border-light);
  border-radius: 8px;
  transition: var(--transition-base);
}

.form-group textarea {
  min-height: 90px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(47, 108, 163, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #9AA8B5;
}

/* ========== Footer ========== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border-light);
  padding: 48px 24px 0;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 32px;
  padding-bottom: 32px;
  max-width: 1160px;
  margin: 0 auto;
}

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

.footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-blue);
  color: #fff;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
}

.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-body);
  margin-bottom: 10px;
  transition: var(--transition-base);
}

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

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
  margin-bottom: 10px;
}

.footer-contact-item i {
  color: var(--primary-blue);
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: 20px 0;
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  justify-content: space-between;
}

.footer-bottom-links {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 13px;
}

.footer-bottom-links a {
  color: var(--text-muted);
}

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

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container-custom,
  .container-wide {
    padding: 0 16px;
  }

  .site-header {
    height: 56px;
  }

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

  .logo-brand .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px;
    box-shadow: 0 8px 24px rgba(47, 108, 163, 0.12);
    border-bottom: 1px solid var(--border-light);
    z-index: 210;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 14px 12px;
    border-radius: 8px;
    font-size: 15px;
  }

  .nav-toggle {
    display: block;
  }

  .header-cta .btn {
    padding: 8px 14px;
    font-size: 13px;
  }

  .header-cta .btn span {
    display: none;
  }

  .category-hero {
    padding: 28px 22px;
    border-radius: 16px;
  }

  .category-hero-title {
    font-size: 26px;
  }

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

  .hero-badge {
    font-size: 12px;
    padding: 6px 12px;
  }

  .featured-card {
    grid-template-columns: 1fr;
    border-radius: 14px;
  }

  .featured-img {
    min-height: 200px;
  }

  .featured-content {
    padding: 24px 20px;
  }

  .featured-content h2 {
    font-size: 20px;
  }

  .featured-content p {
    font-size: 14px;
  }

  .value-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .value-card {
    padding: 20px 18px;
  }

  .article-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .article-thumb {
    width: 100%;
    height: 160px;
    border-radius: 10px;
  }

  .article-info h3 {
    font-size: 15px;
  }

  .article-info p {
    font-size: 13px;
  }

  .article-link {
    justify-content: flex-end;
  }

  .steps-section {
    padding: 32px 20px;
    border-radius: 16px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .step-item {
    padding: 20px 18px;
  }

  .section-title {
    font-size: 24px;
  }

  .faq-question {
    font-size: 14px;
    padding: 16px 18px;
  }

  .faq-answer {
    padding: 0 18px 18px 18px;
    font-size: 13px;
  }

  .cta-section {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 20px;
    border-radius: 16px;
  }

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

  .cta-form {
    padding: 24px 18px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .footer-bottom-links {
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .category-hero-title {
    font-size: 22px;
  }

  .category-hero-subtitle {
    font-size: 14px;
  }

  .section-title {
    font-size: 21px;
  }

  .featured-content h2 {
    font-size: 18px;
  }

  .btn {
    padding: 9px 16px;
    font-size: 13px;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }
}

/* roulang page: category4 */
:root {
            --primary-blue-light: #EAF2FB;
            --primary-blue-mid: #D6E6F7;
            --primary-blue: #2F6CA3;
            --primary-blue-hover: #2A5E8F;
            --primary-blue-focus: #3A7ABF;
            --accent-orange: #E88A3A;
            --accent-amber: #D98A2B;
            --bg-gray: #F5F7F9;
            --text-heading: #1A2733;
            --text-body: #3A4A5A;
            --text-muted: #6A7A8A;
            --border-light: #DFE8F0;
            --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
            --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
            --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 20px;
            --radius-img: 16px;
            --space-section: 64px;
            --space-card: 24px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: #fff;
            line-height: 1.75;
            font-size: 15px;
            min-width: 320px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-family);
            color: var(--text-heading);
            margin: 0 0 12px;
            line-height: 1.3;
            font-weight: 700;
        }

        p {
            margin: 0 0 12px;
        }

        .container-custom {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .logo-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .logo-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--text-heading);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            transition: var(--transition-base);
        }

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

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

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-amber);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 138, 58, 0.28);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: #fff;
            color: var(--primary-blue);
            border: 1.5px solid var(--primary-blue);
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
        }

        .nav-toggle:hover {
            background: var(--primary-blue-light);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-wrap {
            background: var(--bg-gray);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
        }

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

        .breadcrumb .sep {
            color: #b0c2d4;
        }

        .breadcrumb .current {
            color: var(--primary-blue);
            font-weight: 500;
        }

        /* ========== Page Title ========== */
        .page-head {
            background: var(--primary-blue-light);
            padding: 42px 0 36px;
            border-bottom: 1px solid var(--border-light);
        }

        .page-head h1 {
            font-size: 34px;
            font-weight: 800;
            margin: 0 0 8px;
            letter-spacing: 0.02em;
        }

        .page-head .subtitle {
            font-size: 16px;
            color: var(--text-body);
            max-width: 720px;
            margin: 0;
        }

        .page-head .head-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .page-head .head-meta span {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== Main Layout ========== */
        .category-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            padding: 40px 0 64px;
        }

        .category-main {
            min-width: 0;
        }

        .category-sidebar {
            min-width: 0;
        }

        /* ========== Section Title ========== */
        .section-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title .title-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .section-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 680px;
        }

        /* ========== Ranking List ========== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: var(--transition-base);
            box-shadow: 0 2px 10px rgba(47, 108, 163, 0.04);
        }

        .rank-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-blue-mid);
        }

        .rank-number {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
            background: var(--bg-gray);
            color: var(--text-muted);
        }

        .rank-item.top-1 .rank-number {
            background: #FEF3E6;
            color: var(--accent-orange);
        }

        .rank-item.top-2 .rank-number {
            background: #EAF2FB;
            color: var(--primary-blue);
        }

        .rank-item.top-3 .rank-number {
            background: #F0F7F0;
            color: #4C8C4C;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-info .rank-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 3px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .rank-info .rank-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .trend-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .trend-up {
            background: #E8F5E8;
            color: #3A8C3A;
        }

        .trend-down {
            background: #FDECEC;
            color: #C74A4A;
        }

        .trend-stable {
            background: #EAF2FB;
            color: var(--primary-blue);
        }

        .rank-score {
            text-align: right;
            flex-shrink: 0;
            min-width: 60px;
        }

        .rank-score .score-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.2;
        }

        .rank-score .score-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== Rank Detail Cards ========== */
        .rank-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }

        .rank-detail-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(47, 108, 163, 0.06);
            transition: var(--transition-base);
        }

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

        .rank-detail-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .rank-detail-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary-blue);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
        }

        .rank-detail-card .card-body {
            padding: 18px 20px 20px;
        }

        .rank-detail-card .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .rank-detail-card .card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }

        .rank-detail-card .card-stats {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .rank-detail-card .card-stats span {
            font-size: 12px;
            color: var(--text-body);
            background: var(--bg-gray);
            padding: 4px 10px;
            border-radius: 6px;
        }

        /* ========== Sidebar ========== */
        .sidebar-block {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(47, 108, 163, 0.05);
        }

        .sidebar-block h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-blue-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hot-link-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hot-link-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: 10px;
            background: var(--bg-gray);
            transition: var(--transition-base);
            text-decoration: none;
            color: var(--text-body);
        }

        .hot-link-item:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            transform: translateX(4px);
        }

        .hot-link-item .hot-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .hot-link-item .hot-text {
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            display: inline-block;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            background: var(--bg-gray);
            color: var(--text-body);
            transition: var(--transition-base);
            border: 1px solid transparent;
        }

        .tag-cloud a:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-color: var(--primary-blue-mid);
        }

        /* ========== Data Strip ========== */
        .data-strip {
            background: var(--primary-blue-light);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .data-item {
            text-align: center;
        }

        .data-item .data-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.2;
        }

        .data-item .data-label {
            font-size: 13px;
            color: var(--text-body);
            margin-top: 4px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            margin-top: 48px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 12px;
            margin-bottom: 10px;
            overflow: hidden;
            background: #fff;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--primary-blue-mid);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-heading);
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
            transition: var(--transition-base);
        }

        .faq-question:hover {
            background: var(--primary-blue-light);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition-base);
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
            background: var(--primary-blue);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }

        .faq-answer.open {
            max-height: 240px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
            background: var(--bg-gray);
            padding: 14px 16px;
            border-radius: 8px;
        }

        /* ========== CTA Panel ========== */
        .cta-panel {
            background: var(--primary-blue);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .cta-panel .cta-text h3 {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-panel .cta-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            margin: 0;
            max-width: 480px;
        }

        .cta-panel .btn-white {
            background: #fff;
            color: var(--primary-blue);
            font-weight: 700;
            padding: 12px 26px;
        }

        .cta-panel .btn-white:hover {
            background: var(--primary-blue-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #F5F7F9;
            border-top: 1px solid var(--border-light);
            padding: 48px 0 24px;
            margin-top: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            display: block;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-heading);
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-body);
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--primary-blue);
            transform: translateX(3px);
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .footer-contact-item i {
            color: var(--primary-blue);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .category-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .rank-detail-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 48px;
                --space-card: 20px;
            }

            .site-header {
                height: 56px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
                box-shadow: 0 8px 24px rgba(47, 108, 163, 0.12);
                gap: 2px;
                display: none;
                border-bottom: 1px solid var(--border-light);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                width: 100%;
                padding: 10px 12px;
                font-size: 15px;
            }

            .header-cta .btn {
                padding: 8px 14px;
                font-size: 13px;
            }

            .page-head h1 {
                font-size: 26px;
            }

            .category-layout {
                padding: 24px 0 40px;
                gap: 20px;
            }

            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px 16px;
            }

            .rank-number {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .rank-score {
                text-align: left;
                min-width: auto;
            }

            .data-strip {
                grid-template-columns: 1fr 1fr;
                padding: 20px;
                gap: 12px;
            }

            .data-item .data-num {
                font-size: 24px;
            }

            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .header-cta .btn-outline {
                display: none;
            }

            .rank-detail-grid {
                gap: 14px;
            }

            .rank-detail-card .card-img {
                height: 140px;
            }

            .data-strip {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-blue-light: #EAF2FB;
            --primary-blue-mid: #D6E6F7;
            --primary-blue: #2F6CA3;
            --primary-blue-hover: #2A5E8F;
            --primary-blue-focus: #3A7ABF;
            --accent-orange: #E88A3A;
            --accent-amber: #D98A2B;
            --bg-gray: #F5F7F9;
            --text-heading: #1A2733;
            --text-body: #3A4A5A;
            --text-muted: #6A7A8A;
            --border-light: #DFE8F0;
            --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
            --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
            --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 20px;
            --radius-img: 16px;
            --space-section: 72px;
            --space-card: 28px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: #ffffff;
            line-height: 1.75;
            font-size: 15px;
            min-width: 320px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        * {
            box-sizing: border-box;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            font-family: var(--font-family);
        }

        .container-custom {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .logo-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .logo-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-brand:hover {
            color: var(--text-heading);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            transition: var(--transition-base);
        }

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

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

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-amber);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 138, 58, 0.30);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background: #fff;
            color: var(--primary-blue);
            border: 1.5px solid var(--primary-blue);
        }

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

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            background: var(--primary-blue-light);
            border: none;
            border-radius: 8px;
            color: var(--primary-blue);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: var(--primary-blue-mid);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: 20px 0 0;
            background: #fff;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li + li::before {
            content: '/';
            color: var(--border-light);
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--text-muted);
        }

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

        .breadcrumb .current {
            color: var(--primary-blue);
            font-weight: 600;
        }

        /* ========== Category Title Section ========== */
        .cat-title-section {
            padding: 36px 0 28px;
            background: #fff;
        }

        .cat-title-wrapper {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cat-title-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            width: fit-content;
        }

        .cat-title-wrapper h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-heading);
            margin: 0;
            letter-spacing: 0.02em;
        }

        .cat-title-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
            max-width: 720px;
            margin: 0;
        }

        /* ========== Banner Section ========== */
        .banner-section {
            padding: 20px 0 32px;
        }

        .banner-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
            background-color: var(--primary-blue-light);
            box-shadow: var(--shadow-card);
        }

        .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.45;
        }

        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(47, 108, 163, 0.88) 0%, rgba(47, 108, 163, 0.72) 40%, rgba(217, 138, 43, 0.55) 100%);
        }

        .banner-content {
            position: relative;
            z-index: 2;
            padding: 36px 40px;
            max-width: 680px;
            color: #fff;
        }

        .banner-content h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 12px;
            color: #fff;
        }

        .banner-content p {
            font-size: 15px;
            line-height: 1.75;
            margin: 0 0 20px;
            color: rgba(255, 255, 255, 0.92);
        }

        .banner-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .banner-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .banner-stat-num {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
        }

        .banner-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
        }

        /* ========== Tab Section ========== */
        .tab-section {
            padding: 24px 0 56px;
            background: var(--bg-gray);
        }

        .tab-header {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .tab-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--border-light);
            background: #fff;
            color: var(--text-body);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .tab-btn:hover {
            border-color: var(--primary-blue);
            color: var(--primary-blue);
            background: var(--primary-blue-light);
        }

        .tab-btn.active {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
            box-shadow: 0 4px 14px rgba(47, 108, 163, 0.25);
        }

        .tab-btn:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
        }

        .tab-panel {
            display: none;
            animation: fadeInTab 0.4s ease;
        }

        .tab-panel.active {
            display: block;
        }

        @keyframes fadeInTab {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .tab-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .fan-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            border: 1px solid rgba(223, 232, 240, 0.6);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .fan-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-blue-mid);
        }

        .fan-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 10px;
        }

        .fan-card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .fan-card-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(232, 138, 58, 0.12);
            color: var(--accent-orange);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-badge);
            white-space: nowrap;
        }

        .fan-card-badge.easy {
            background: rgba(47, 108, 163, 0.10);
            color: var(--primary-blue);
        }

        .fan-card-badge.hard {
            background: rgba(220, 60, 60, 0.10);
            color: #c0392b;
        }

        .fan-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
            line-height: 1.4;
        }

        .fan-card-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            flex-grow: 1;
        }

        .fan-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        .fan-card-score {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-blue);
        }

        .fan-card-score span {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
        }

        .fan-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-blue);
            transition: var(--transition-base);
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
        }

        .fan-card-link:hover {
            color: var(--primary-blue-hover);
            transform: translateX(3px);
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 56px 0 64px;
            background: #fff;
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 8px;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-gray);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition-base);
            border: 1px solid transparent;
        }

        .faq-item.active {
            border-color: var(--primary-blue-mid);
            background: #fff;
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            background: none;
            border: none;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            font-family: var(--font-family);
            transition: var(--transition-base);
            min-height: 56px;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            transition: var(--transition-base);
            font-size: 14px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

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

        /* ========== Recommendation Strip ========== */
        .recommend-section {
            padding: 48px 0 64px;
            background: var(--primary-blue-light);
        }

        .recommend-strip {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-blue-mid) transparent;
        }

        .recommend-strip::-webkit-scrollbar {
            height: 6px;
        }

        .recommend-strip::-webkit-scrollbar-track {
            background: transparent;
        }

        .recommend-strip::-webkit-scrollbar-thumb {
            background: var(--primary-blue-mid);
            border-radius: 4px;
        }

        .recommend-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .recommend-card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }

        .recommend-card-body {
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex-grow: 1;
        }

        .recommend-card-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
        }

        .recommend-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
            flex-grow: 1;
        }

        .recommend-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .recommend-card-link:hover {
            color: var(--primary-blue-hover);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 56px 0 64px;
            background: #fff;
        }

        .cta-panel {
            background: var(--primary-blue-light);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            border: 1px solid var(--primary-blue-mid);
        }

        .cta-panel-content {
            flex: 1;
            min-width: 280px;
        }

        .cta-panel-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 8px;
        }

        .cta-panel-content p {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
        }

        .cta-panel-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1a2733;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact-item i {
            color: var(--primary-blue-focus);
            font-size: 14px;
            margin-top: 3px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 12px;
        }

        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* ========== Mobile Drawer ========== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: 0 12px 30px rgba(47, 108, 163, 0.15);
            z-index: 150;
            padding: 16px 20px 24px;
            flex-direction: column;
            gap: 6px;
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition-base);
        }

        .mobile-drawer.open {
            display: flex;
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-drawer a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 12px 14px;
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .mobile-drawer a:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
        }

        .mobile-drawer a.active {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            font-weight: 600;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .tab-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            :root {
                --space-section: 56px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }

            .main-nav {
                display: none;
            }

            .header-cta .btn-outline {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .cat-title-wrapper h1 {
                font-size: 26px;
            }

            .banner-content {
                padding: 28px 22px;
                max-width: 100%;
            }

            .banner-content h2 {
                font-size: 20px;
            }

            .banner-stats {
                gap: 16px;
            }

            .banner-stat-num {
                font-size: 20px;
            }

            .tab-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .tab-btn {
                font-size: 13px;
                padding: 8px 16px;
            }

            .cta-panel {
                padding: 28px 22px;
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .recommend-card {
                flex: 0 0 240px;
            }

            :root {
                --space-section: 40px;
                --space-card: 20px;
            }
        }

        @media (max-width: 520px) {
            .container-custom,
            .container-wide {
                padding: 0 16px;
            }

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

            .logo-brand .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .header-cta .btn-primary {
                padding: 8px 12px;
                font-size: 12px;
            }

            .cat-title-wrapper h1 {
                font-size: 22px;
            }

            .banner-card {
                min-height: 220px;
            }

            .banner-content {
                padding: 22px 18px;
            }

            .banner-content h2 {
                font-size: 18px;
            }

            .banner-stat-num {
                font-size: 18px;
            }

            .banner-stat-label {
                font-size: 11px;
            }

            .tab-header {
                flex-wrap: nowrap;
                overflow-x: auto;
            }

            .tab-btn {
                flex-shrink: 0;
            }

            .fan-card {
                padding: 20px 18px;
            }

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

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .cta-panel-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-panel-actions .btn {
                width: 100%;
            }

            .recommend-card {
                flex: 0 0 220px;
            }

            .section-header h2 {
                font-size: 22px;
            }
        }

/* roulang page: category5 */
:root {
            --primary-blue-light: #EAF2FB;
            --primary-blue-mid: #D6E6F7;
            --primary-blue: #2F6CA3;
            --primary-blue-hover: #2A5E8F;
            --primary-blue-focus: #3A7ABF;
            --accent-orange: #E88A3A;
            --accent-amber: #D98A2B;
            --bg-gray: #F5F7F9;
            --text-heading: #1A2733;
            --text-body: #3A4A5A;
            --text-muted: #6A7A8A;
            --border-light: #DFE8F0;
            --shadow-card: 0 8px 30px rgba(47, 108, 163, 0.10);
            --shadow-card-hover: 0 12px 38px rgba(47, 108, 163, 0.16);
            --shadow-nav: 0 2px 12px rgba(47, 108, 163, 0.06);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 20px;
            --radius-img: 16px;
            --space-section: 64px;
            --space-card: 28px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            color: var(--text-body);
            background: #ffffff;
            line-height: 1.75;
            font-size: 15px;
            min-width: 320px;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--primary-blue-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(47, 108, 163, 0.10);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }
        .logo-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .logo-brand:hover {
            color: var(--text-heading);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            transition: var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--primary-blue);
            background: var(--primary-blue-light);
        }
        .main-nav a.active {
            color: var(--primary-blue);
            background: var(--primary-blue-light);
            font-weight: 600;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(47, 108, 163, 0.25);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-amber);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(217, 138, 43, 0.28);
        }
        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-outline {
            background: #fff;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }
        .btn-outline:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue);
        }
        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            background: var(--bg-gray);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb-bar .container-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb-sep {
            color: var(--border-light);
            font-size: 12px;
        }
        .breadcrumb-current {
            color: var(--primary-blue);
            font-weight: 500;
        }
        /* ========== Category Hero ========== */
        .cat-hero {
            background: linear-gradient(135deg, var(--primary-blue-light) 0%, #f8fbff 55%, var(--bg-gray) 100%);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            top: -80px;
            width: 380px;
            height: 380px;
            background: rgba(47, 108, 163, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-hero-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .cat-hero-content .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--border-light);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 18px;
        }
        .cat-hero-content h1 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
        }
        .cat-hero-content .hero-sub {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-trust {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 28px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-trust span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust i {
            color: var(--primary-blue);
        }
        .cat-hero-visual {
            position: relative;
        }
        .cat-hero-visual .hero-img-wrap {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            position: relative;
        }
        .cat-hero-visual .hero-img-wrap img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: 20px;
        }
        .cat-hero-visual .hero-img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--text-heading);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }
        .hero-stat-float {
            position: absolute;
            bottom: -18px;
            right: -12px;
            background: #fff;
            border-radius: 14px;
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .hero-stat-float .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1.1;
        }
        .hero-stat-float .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.4;
        }
        /* ========== Section Common ========== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 560px;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-orange);
            background: rgba(232, 138, 58, 0.10);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 10px;
            letter-spacing: 0.06em;
        }
        /* ========== Timeline / Steps ========== */
        .timeline-section {
            background: #fff;
        }
        .timeline-wrap {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding-left: 36px;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--primary-blue-mid);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 32px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -36px;
            top: 4px;
            width: 30px;
            height: 30px;
            background: #fff;
            border: 2px solid var(--primary-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary-blue);
            z-index: 1;
            transition: var(--transition-base);
        }
        .timeline-item:hover .timeline-dot {
            background: var(--primary-blue);
            color: #fff;
            box-shadow: 0 0 0 6px rgba(47, 108, 163, 0.12);
        }
        .timeline-card {
            background: var(--bg-gray);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: var(--transition-base);
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.04);
        }
        .timeline-card:hover {
            background: #fff;
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .timeline-card .timeline-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .timeline-card .timeline-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(47, 108, 163, 0.10);
            color: var(--primary-blue);
        }
        .timeline-card .timeline-badge.warn {
            background: rgba(232, 138, 58, 0.12);
            color: var(--accent-orange);
        }
        .timeline-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 0;
        }
        /* ========== Alternating Info Blocks ========== */
        .alt-blocks-section {
            background: linear-gradient(180deg, var(--bg-gray) 0%, #fafcff 100%);
        }
        .alt-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 48px;
        }
        .alt-block:last-child {
            margin-bottom: 0;
        }
        .alt-block.reverse .alt-block-img {
            order: 2;
        }
        .alt-block.reverse .alt-block-content {
            order: 1;
        }
        .alt-block-img {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .alt-block-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-img);
            transition: var(--transition-smooth);
        }
        .alt-block-img:hover img {
            transform: scale(1.03);
        }
        .alt-block-img .img-overlay-tag {
            position: absolute;
            bottom: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--text-heading);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
        }
        .alt-block-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .alt-block-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .alt-block-content ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .alt-block-content ul li {
            font-size: 14px;
            color: var(--text-body);
            padding-left: 24px;
            position: relative;
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .alt-block-content ul li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--primary-blue);
            font-size: 14px;
        }
        /* ========== Correction Checklist ========== */
        .checklist-section {
            background: #fff;
        }
        .checklist-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .checklist-card {
            background: var(--bg-gray);
            border-radius: var(--radius-card);
            padding: 24px 26px;
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.04);
            transition: var(--transition-base);
            border: 1px solid transparent;
        }
        .checklist-card:hover {
            background: #fff;
            border-color: var(--border-light);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .checklist-card .check-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-blue-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary-blue);
            margin-bottom: 14px;
        }
        .checklist-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .checklist-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-gray);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: 14px;
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(47, 108, 163, 0.05);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: var(--transition-base);
        }
        .faq-question:hover {
            color: var(--primary-blue);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--primary-blue-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary-blue);
            transition: var(--transition-base);
        }
        .faq-item.active .faq-icon {
            background: var(--primary-blue);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        /* ========== Bottom CTA ========== */
        .cta-strip-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-focus) 50%, #4786bf 100%);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-strip-section::before {
            content: '';
            position: absolute;
            left: -80px;
            bottom: -100px;
            width: 320px;
            height: 320px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }
        .cta-strip-section::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
        }
        .cta-strip-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-strip-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .cta-strip-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
            max-width: 480px;
            line-height: 1.7;
        }
        .cta-strip-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-white {
            background: #fff;
            color: var(--primary-blue);
        }
        .btn-white:hover {
            background: var(--primary-blue-light);
            color: var(--primary-blue-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
        }
        .btn-ghost-white {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-1px);
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #1A2733;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: block;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
        }
        .footer-contact-item i {
            width: 18px;
            color: var(--primary-blue-focus);
            font-size: 13px;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
        }
        .footer-bottom-links a:hover {
            color: #fff;
        }
        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .cat-hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .cat-hero-visual .hero-img-wrap img {
                height: 260px;
            }
            .checklist-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .alt-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .alt-block.reverse .alt-block-img {
                order: 1;
            }
            .alt-block.reverse .alt-block-content {
                order: 2;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 48px;
                --space-card: 20px;
            }
            .site-header {
                height: 60px;
            }
            .header-inner {
                gap: 10px;
            }
            .main-nav {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: #fff;
                box-shadow: 0 8px 24px rgba(47, 108, 163, 0.12);
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                border-top: 1px solid var(--border-light);
                max-height: calc(100vh - 60px);
                overflow-y: auto;
                z-index: 199;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 12px 10px;
            }
            .nav-toggle {
                display: block;
                order: 3;
            }
            .header-cta {
                order: 2;
            }
            .logo-brand {
                font-size: 18px;
                order: 1;
            }
            .logo-brand .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .cat-hero {
                padding: 40px 0 48px;
            }
            .cat-hero-content h1 {
                font-size: 30px;
            }
            .cat-hero-content .hero-sub {
                font-size: 15px;
            }
            .cat-hero-visual .hero-img-wrap img {
                height: 220px;
            }
            .hero-stat-float {
                right: 8px;
                bottom: -14px;
                padding: 12px 16px;
            }
            .hero-stat-float .stat-num {
                font-size: 22px;
            }
            .checklist-grid {
                grid-template-columns: 1fr;
            }
            .timeline-wrap {
                padding-left: 28px;
            }
            .timeline-wrap::before {
                left: 10px;
            }
            .timeline-dot {
                left: -28px;
                width: 24px;
                height: 24px;
                font-size: 10px;
            }
            .timeline-card {
                padding: 18px 16px;
            }
            .alt-block-img img {
                height: 200px;
            }
            .cta-strip-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-strip-content h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .cat-hero-content h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-trust {
                gap: 12px;
                flex-direction: column;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .alt-block-content h3 {
                font-size: 18px;
            }
            .cta-strip-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-strip-actions .btn {
                width: 100%;
            }
        }