/* roulang page: index */
:root {
            --primary: #1F5EFF;
            --primary-dark: #1746C4;
            --primary-light: #EAF0FF;
            --accent-green: #0FA47A;
            --accent-gold: #F5A524;
            --bg-page: #F5F7FB;
            --bg-card: #FFFFFF;
            --bg-dark: #16233B;
            --text-main: #18243B;
            --text-secondary: #5B6B83;
            --border: #E6EAF2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 10px 30px rgba(23, 38, 80, 0.08);
            --shadow-hover: 0 16px 40px rgba(23, 38, 80, 0.12);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 80px 0;
            --section-pad-mobile: 44px 0;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(230, 234, 242, 0.85);
            transition: box-shadow var(--transition), background var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 8px 24px rgba(23, 38, 80, 0.08);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
        }
        .header-logo {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .header-logo .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--text-main);
        }

        .header-top-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .header-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .header-search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            overflow: hidden;
            width: 280px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.12);
        }
        .header-search-form input {
            flex: 1;
            border: none;
            padding: 8px 14px;
            font-size: 14px;
            background: transparent;
            color: var(--text-main);
        }
        .header-search-form input:focus {
            outline: none;
        }
        .header-search-form input::placeholder {
            color: #9aa8bd;
            font-size: 13px;
        }
        .header-search-form button {
            background: var(--primary);
            color: #fff;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 0;
            transition: background var(--transition);
            white-space: nowrap;
        }
        .header-search-form button:hover {
            background: var(--primary-dark);
        }

        .header-nav-row {
            display: flex;
            align-items: center;
            gap: 20px;
            height: 56px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .header-nav-row::-webkit-scrollbar {
            height: 3px;
        }
        .header-nav-row::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .main-nav a {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .hot-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .hot-tags-label {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            font-weight: 500;
        }
        .hot-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .hot-tag:hover {
            background: #dce6ff;
            color: var(--primary-dark);
            border-color: #c5d5ff;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: var(--primary-light);
            align-items: center;
            justify-content: center;
        }
        .mobile-menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            display: block;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            max-width: 85vw;
            background: #fff;
            z-index: 1100;
            box-shadow: -20px 0 60px rgba(23, 38, 80, 0.18);
            padding: 24px 20px;
            flex-direction: column;
            gap: 18px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer-close {
            align-self: flex-end;
            font-size: 24px;
            line-height: 1;
            padding: 4px 8px;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-drawer-close:hover {
            background: var(--primary-light);
        }
        .mobile-drawer .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer .mobile-nav a {
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            transition: all var(--transition);
        }
        .mobile-drawer .mobile-nav a:hover,
        .mobile-drawer .mobile-nav a.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer .mobile-hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 8px;
            border-top: 1px solid var(--border);
        }
        .mobile-drawer .mobile-search-form {
            display: flex;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .mobile-drawer .mobile-search-form:focus-within {
            border-color: var(--primary);
        }
        .mobile-drawer .mobile-search-form input {
            flex: 1;
            padding: 10px 14px;
            border: none;
            font-size: 14px;
            background: transparent;
        }
        .mobile-drawer .mobile-search-form input:focus {
            outline: none;
        }
        .mobile-drawer .mobile-search-form button {
            padding: 10px 16px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
        }
        .overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(22, 35, 59, 0.45);
            z-index: 1050;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .overlay.show {
            opacity: 1;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, #EAF0FF 0%, #F8FAFF 55%, #FFFFFF 100%);
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(31, 94, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 165, 36, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 480px;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.28;
            letter-spacing: 0.2px;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        .hero-content h1 .highlight {
            color: var(--primary);
        }
        .hero-content .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 600px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(31, 94, 255, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
        }
        .btn-gold:hover {
            background: #d9910e;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(245, 165, 36, 0.28);
        }
        .btn-green {
            background: var(--accent-green);
            color: #fff;
        }
        .btn-green:hover {
            background: #0b8a64;
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
        }

        .hero-visual {
            display: grid;
            grid-template-columns: 1fr 140px;
            gap: 14px;
            position: relative;
        }
        .hero-main-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: 0 20px 50px rgba(23, 38, 80, 0.12);
            padding: 20px;
            grid-column: 1 / 2;
            grid-row: 1 / 3;
        }
        .hero-main-card .card-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 14px;
            background: var(--bg-page);
        }
        .hero-main-card .card-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .hero-main-card .card-headline {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .hero-main-card .card-sub {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .hero-side-card {
            background: var(--bg-card);
            border-radius: 14px;
            box-shadow: 0 12px 30px rgba(23, 38, 80, 0.10);
            padding: 14px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-height: 110px;
        }
        .hero-side-card:nth-child(2) {
            grid-column: 2 / 3;
            grid-row: 1 / 2;
            margin-top: 28px;
        }
        .hero-side-card:nth-child(3) {
            grid-column: 2 / 3;
            grid-row: 2 / 3;
            margin-bottom: 28px;
        }
        .hero-side-card .side-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .hero-side-card .side-icon.green {
            background: #E6F7F0;
            color: var(--accent-green);
        }
        .hero-side-card .side-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }
        .hero-side-card .side-desc {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Section base ===== */
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background: #FFFFFF;
        }
        .section-heading {
            margin-bottom: 36px;
        }
        .section-heading .section-tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-heading h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: 0.3px;
            margin-bottom: 10px;
        }
        .section-heading .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
        }

        /* ===== Feature grid ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .feature-grid .feature-card:nth-child(4),
        .feature-grid .feature-card:nth-child(5) {
            grid-column: span 1;
        }
        .feature-grid .feature-card:nth-child(4) {
            margin-left: calc(50% + 10px);
        }
        .feature-grid .feature-card:nth-child(5) {
            margin-right: calc(50% + 10px);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .feature-card .feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .feature-card .feature-icon.gold {
            background: #FFF5E0;
            color: var(--accent-gold);
        }
        .feature-card .feature-icon.green {
            background: #E6F7F0;
            color: var(--accent-green);
        }
        .feature-card .feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .feature-card .feature-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Scenario block ===== */
        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .scenario-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .scenario-item.reverse .scenario-text {
            order: 1;
        }
        .scenario-item.reverse .scenario-image {
            order: 2;
        }
        .scenario-text h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .scenario-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 14px;
        }
        .scenario-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }
        .scenario-image {
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-page);
        }
        .scenario-image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        /* ===== Demo / screenshot ===== */
        .demo-block {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .demo-window-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 20px;
            background: #f0f3f9;
            border-bottom: 1px solid var(--border);
        }
        .demo-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #d0d8e8;
        }
        .demo-dot:nth-child(1) {
            background: #ff5f56;
        }
        .demo-dot:nth-child(2) {
            background: #ffbd2e;
        }
        .demo-dot:nth-child(3) {
            background: #27c93f;
        }
        .demo-window-bar .demo-title {
            margin-left: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .demo-body {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 24px;
            padding: 24px;
        }
        .demo-body-main {
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-page);
        }
        .demo-body-main img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .demo-body-side {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .demo-stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 16px;
            background: var(--bg-page);
            border-radius: 10px;
        }
        .demo-stat-row .demo-stat-name {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .demo-stat-row .demo-stat-val {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }
        .demo-stat-row .demo-stat-val.gold {
            color: var(--accent-gold);
        }
        .demo-stat-row .demo-stat-val.green {
            color: var(--accent-green);
        }

        /* ===== Case timeline ===== */
        .case-timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 28px;
        }
        .case-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: var(--border);
            border-radius: 2px;
        }
        .case-item {
            position: relative;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }
        .case-item:last-child {
            border-bottom: none;
        }
        .case-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 26px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-light);
        }
        .case-item .case-date {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
            letter-spacing: 0.4px;
        }
        .case-item .case-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .case-item .case-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== Pricing ===== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid transparent;
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .pricing-card.featured {
            border-color: var(--accent-gold);
            box-shadow: 0 16px 44px rgba(245, 165, 36, 0.18);
            position: relative;
        }
        .pricing-card.featured .featured-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent-gold);
            color: #fff;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .pricing-card .plan-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .pricing-card .plan-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .pricing-card.featured .plan-price {
            color: var(--accent-gold);
        }
        .pricing-card .plan-price-note {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .pricing-card .plan-features {
            list-style: none;
            margin-bottom: 20px;
            flex: 1;
        }
        .pricing-card .plan-features li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-card .plan-features li::before {
            content: '✓';
            color: var(--accent-green);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ===== Reviews ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 22px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .review-stars {
            display: flex;
            gap: 2px;
            margin-bottom: 10px;
        }
        .review-stars span {
            color: var(--accent-gold);
            font-size: 16px;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .review-author {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .review-author .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ===== Metrics ===== */
        .metrics-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 22px;
            text-align: center;
            transition: all var(--transition);
        }
        .metric-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .metric-item .metric-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }
        .metric-item .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .metric-item .metric-note {
            font-size: 13px;
            color: var(--text-secondary);
            opacity: 0.8;
            line-height: 1.5;
        }

        /* ===== Deep content ===== */
        .deep-content {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 36px;
        }
        .deep-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .deep-content h3:not(:first-child) {
            margin-top: 28px;
        }
        .deep-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .deep-content .quote-block {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 10px 10px 0;
            margin: 18px 0;
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.8;
            font-weight: 500;
        }
        .deep-content .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0;
            font-size: 14px;
        }
        .deep-content .data-table th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 10px 14px;
            text-align: left;
            border-bottom: 2px solid #d5e0ff;
        }
        .deep-content .data-table td {
            padding: 10px 14px;
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
        }
        .deep-content .data-table tr:last-child td {
            border-bottom: none;
        }

        /* ===== News list ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-item {
            display: grid;
            grid-template-columns: 120px 1fr auto;
            gap: 20px;
            align-items: start;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 18px;
            transition: all var(--transition);
        }
        .news-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .news-date-block {
            background: var(--primary-light);
            border-radius: 10px;
            padding: 10px;
            text-align: center;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.4px;
        }
        .news-date-block .news-day {
            font-size: 22px;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .news-content .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .news-content .news-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .news-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            align-self: center;
            transition: all var(--transition);
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--primary);
        }
        .news-read-more:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* ===== Brand intro ===== */
        .brand-intro {
            background: var(--bg-dark);
            border-radius: var(--radius-card);
            padding: 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .brand-intro::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(31, 94, 255, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .brand-intro h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .brand-intro p {
            font-size: 15px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.78);
            position: relative;
            z-index: 1;
            max-width: 800px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: 14px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.open {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            text-align: left;
            transition: background var(--transition);
            letter-spacing: 0.2px;
        }
        .faq-question:hover {
            background: #F8FAFF;
        }
        .faq-question .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 14px 0 0;
            border-top: 1px solid var(--border);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1F5EFF 0%, #1746C4 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            color: #fff;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -20px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            position: relative;
            z-index: 1;
            max-width: 600px;
        }
        .cta-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
            position: relative;
            z-index: 1;
            min-width: 200px;
        }
        .cta-actions .btn {
            justify-content: center;
        }
        .cta-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            text-align: center;
            letter-spacing: 0.3px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            margin-top: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding: 48px 0 36px;
        }
        .footer-brand h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: rgba(255, 255, 255, 0.9);
            letter-spacing: 0.4px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #a8c0ff;
        }
        .footer-subscribe p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 14px;
            line-height: 1.7;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }
        .footer-subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
        }
        .footer-subscribe-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-input);
            font-size: 14px;
            font-weight: 600;
            transition: background var(--transition);
            white-space: nowrap;
        }
        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            align-items: center;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
            font-size: 13px;
        }
        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: #a8c0ff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .hero-inner {
                grid-template-columns: 1fr 420px;
                gap: 36px;
            }
            .hero-content h1 {
                font-size: 38px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid .feature-card:nth-child(4),
            .feature-grid .feature-card:nth-child(5) {
                margin: 0;
                grid-column: span 1;
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-bar {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991px) {
            .header-search-form {
                width: 220px;
            }
            .hot-tags {
                display: none;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                grid-template-columns: 1fr 120px;
                max-width: 520px;
            }
            .demo-body {
                grid-template-columns: 1fr;
            }
            .demo-body-side {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .demo-stat-row {
                flex: 1;
                min-width: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cta-section {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .cta-actions {
                align-items: center;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: var(--section-pad-mobile);
            }
            .header-search-form {
                display: none;
            }
            .header-nav-row {
                justify-content: space-between;
                height: 52px;
            }
            .main-nav {
                gap: 0;
            }
            .main-nav a {
                padding: 6px 12px;
                font-size: 14px;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .hero-section {
                padding: 44px 0 36px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content .hero-desc {
                font-size: 15px;
            }
            .hero-visual {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hero-main-card {
                grid-column: 1;
                grid-row: auto;
            }
            .hero-side-card:nth-child(2),
            .hero-side-card:nth-child(3) {
                grid-column: 1;
                grid-row: auto;
                margin: 0;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scenario-item,
            .scenario-item.reverse {
                grid-template-columns: 1fr;
                gap: 18px;
                padding: 18px;
            }
            .scenario-item.reverse .scenario-text {
                order: 1;
            }
            .scenario-item.reverse .scenario-image {
                order: 2;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .metrics-bar {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .news-item {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .news-date-block {
                display: inline-block;
                width: auto;
                padding: 6px 14px;
            }
            .news-read-more {
                align-self: flex-start;
            }
            .deep-content {
                padding: 20px;
            }
            .deep-content .data-table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
            .brand-intro {
                padding: 24px;
            }
            .cta-section {
                padding: 32px 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .section-heading h2 {
                font-size: 24px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-num {
                font-size: 22px;
            }
        }

        @media (max-width: 559px) {
            .header-brand-row {
                height: 50px;
            }
            .header-logo {
                font-size: 18px;
            }
            .header-logo .logo-mark {
                width: 26px;
                height: 26px;
                font-size: 14px;
                border-radius: 7px;
            }
            .header-date {
                font-size: 11px;
            }
            .main-nav a {
                padding: 4px 8px;
                font-size: 13px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-visual {
                gap: 10px;
            }
            .hero-main-card .card-img img {
                height: 140px;
            }
            .demo-body {
                padding: 16px;
            }
            .demo-body-main img {
                height: 200px;
            }
            .demo-stat-row {
                min-width: 100%;
            }
            .pricing-card,
            .review-card,
            .feature-card {
                padding: 18px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-buttons {
                flex-direction: column;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #1F5EFF;
        --primary-dark: #1746C4;
        --primary-light: #EAF0FF;
        --accent-green: #0FA47A;
        --accent-gold: #F5A524;
        --bg-page: #F5F7FB;
        --bg-card: #FFFFFF;
        --bg-dark: #16233B;
        --text-main: #18243B;
        --text-secondary: #5B6B83;
        --border: #E6EAF2;
        --radius-card: 16px;
        --radius-btn: 10px;
        --radius-input: 10px;
        --radius-pill: 999px;
        --shadow-sm: 0 10px 30px rgba(23, 38, 80, 0.08);
        --shadow-hover: 0 16px 40px rgba(23, 38, 80, 0.12);
        --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        --container-max: 1200px;
        --section-pad: 80px 0;
        --section-pad-mobile: 44px 0;
        --transition: 0.25s ease;
    }
    html {
        -webkit-text-size-adjust: 100%;
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-sans);
        color: var(--text-main);
        background-color: var(--bg-page);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        margin: 0;
    }
    img {
        max-width: 100%;
        display: block;
        height: auto;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    button, input, select, textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }
    button {
        cursor: pointer;
        border: none;
        background: none;
    }
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    /* ===== Header/Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(230, 234, 242, 0.85);
        transition: box-shadow var(--transition), background var(--transition);
    }
    .site-header.scrolled {
        box-shadow: 0 8px 24px rgba(23, 38, 80, 0.08);
    }
    .header-brand-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 56px;
    }
    .header-logo {
        font-size: 21px;
        font-weight: 800;
        letter-spacing: 1px;
        color: var(--text-main);
        display: flex;
        align-items: center;
        gap: 8px;
        white-space: nowrap;
    }
    .header-logo .logo-mark {
        width: 32px;
        height: 32px;
        border-radius: 9px;
        background: var(--primary);
        color: #fff;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        font-weight: 800;
        flex-shrink: 0;
    }
    .header-logo:hover { color: var(--text-main); }
    .header-top-actions {
        display: flex;
        align-items: center;
        gap: 14px;
    }
    .header-date {
        font-size: 13px;
        color: var(--text-secondary);
        letter-spacing: 0.4px;
        white-space: nowrap;
    }
    .header-search-form {
        display: flex;
        align-items: center;
        gap: 0;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-input);
        overflow: hidden;
        width: 280px;
        transition: border-color var(--transition), box-shadow var(--transition);
    }
    .header-search-form:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.12);
    }
    .header-search-form input {
        flex: 1;
        border: none;
        padding: 8px 14px;
        font-size: 14px;
        background: transparent;
        color: var(--text-main);
    }
    .header-search-form input:focus { outline: none; }
    .header-search-form input::placeholder {
        color: #9aa8bd;
        font-size: 13px;
    }
    .header-search-form button {
        background: var(--primary);
        color: #fff;
        padding: 8px 16px;
        font-size: 14px;
        font-weight: 600;
        border-radius: 0;
        transition: background var(--transition);
        white-space: nowrap;
    }
    .header-search-form button:hover { background: var(--primary-dark); }
    .header-nav-row {
        display: flex;
        align-items: center;
        gap: 20px;
        height: 56px;
        overflow-x: auto;
        scrollbar-width: thin;
        scrollbar-color: var(--border) transparent;
        -webkit-overflow-scrolling: touch;
    }
    .header-nav-row::-webkit-scrollbar { height: 3px; }
    .header-nav-row::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
    }
    .main-nav a {
        padding: 8px 16px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: var(--radius-pill);
        white-space: nowrap;
        transition: all var(--transition);
        position: relative;
    }
    .main-nav a:hover { color: var(--primary); }
    .main-nav a.active {
        background: var(--primary-light);
        color: var(--primary);
        font-weight: 600;
    }
    .hot-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
    }
    .hot-tags-label {
        font-size: 13px;
        color: var(--text-secondary);
        font-weight: 500;
        white-space: nowrap;
    }
    .hot-tag {
        font-size: 13px;
        padding: 4px 12px;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: var(--radius-pill);
        transition: all var(--transition);
        white-space: nowrap;
    }
    .hot-tag:hover {
        background: var(--primary);
        color: #fff;
    }
    /* ===== Breadcrumb ===== */
    .breadcrumb-section {
        padding: 24px 0 0;
        background: transparent;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-secondary);
        flex-wrap: wrap;
    }
    .breadcrumb a { color: var(--text-secondary); }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb .sep { color: #b8c2d0; }
    /* ===== Category Hero ===== */
    .category-hero {
        padding: 32px 0 24px;
        background: linear-gradient(180deg, #fff 0%, var(--bg-page) 100%);
        border-bottom: 1px solid var(--border);
    }
    .category-hero-content {
        display: flex;
        align-items: center;
        gap: 32px;
        flex-wrap: wrap;
    }
    .category-hero-text {
        flex: 1 1 55%;
        min-width: 280px;
    }
    .category-hero-text h1 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.3;
        margin: 0 0 16px;
        color: var(--text-main);
    }
    .category-hero-text .category-desc {
        font-size: 17px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin: 0 0 20px;
        max-width: 680px;
    }
    .category-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .category-tag {
        font-size: 13px;
        padding: 4px 14px;
        border-radius: var(--radius-pill);
        background: var(--primary-light);
        color: var(--primary);
        font-weight: 500;
    }
    .category-hero-visual {
        flex: 1 1 35%;
        min-width: 240px;
        display: flex;
        justify-content: center;
    }
    .category-hero-visual img {
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        max-width: 100%;
        object-fit: cover;
    }
    /* ===== Main Sections ===== */
    main {
        display: block;
        padding-bottom: 40px;
    }
    .section-block {
        padding: 48px 0;
    }
    .section-title {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-main);
        margin: 0 0 16px;
        line-height: 1.35;
    }
    .section-subtitle {
        font-size: 16px;
        color: var(--text-secondary);
        margin: 0 0 32px;
        max-width: 760px;
        line-height: 1.75;
    }
    /* List Cards */
    .article-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    .article-item {
        display: flex;
        gap: 20px;
        background: var(--bg-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        padding: 20px;
        transition: box-shadow var(--transition), transform var(--transition);
        align-items: flex-start;
    }
    .article-item:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }
    .article-item-img {
        flex-shrink: 0;
        width: 200px;
        height: 132px;
        border-radius: 12px;
        overflow: hidden;
        background: var(--primary-light);
    }
    .article-item-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .article-item-body {
        flex: 1;
    }
    .article-item-title {
        font-size: 19px;
        font-weight: 700;
        margin: 0 0 8px;
        color: var(--text-main);
    }
    .article-item-meta {
        display: flex;
        gap: 16px;
        font-size: 13px;
        color: var(--text-secondary);
        margin-bottom: 8px;
        flex-wrap: wrap;
    }
    .article-item-desc {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0 0 12px;
    }
    .btn-read-more {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        padding: 4px 0;
        transition: color var(--transition);
    }
    .btn-read-more:hover { color: var(--primary-dark); }
    /* Deep Article */
    .deep-article {
        background: var(--bg-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        padding: 32px;
        margin-top: 24px;
    }
    .deep-article h2 {
        font-size: 24px;
        font-weight: 700;
        margin: 24px 0 12px;
    }
    .deep-article h3 {
        font-size: 18px;
        font-weight: 600;
        margin: 20px 0 8px;
    }
    .deep-article p {
        color: var(--text-secondary);
        line-height: 1.85;
        margin-bottom: 16px;
    }
    .deep-article blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-light);
        padding: 16px 20px;
        border-radius: 8px;
        margin: 20px 0;
        color: var(--text-main);
        font-size: 16px;
    }
    .data-table-wrap {
        overflow-x: auto;
        margin: 20px 0;
    }
    .data-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 14px;
        min-width: 600px;
    }
    .data-table th {
        background: var(--primary-light);
        color: var(--text-main);
        font-weight: 600;
        padding: 12px 16px;
        text-align: left;
        border-bottom: 1px solid var(--border);
    }
    .data-table td {
        padding: 10px 16px;
        border-bottom: 1px solid var(--border);
        color: var(--text-secondary);
    }
    .data-table tr:last-child td { border-bottom: none; }
    /* Trend Module */
    .trend-module {
        display: flex;
        gap: 24px;
        flex-wrap: wrap;
        background: var(--bg-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        padding: 24px;
    }
    .trend-stats {
        flex: 1 1 250px;
    }
    .trend-stat-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
        border-bottom: 1px dashed var(--border);
    }
    .trend-stat-item:last-child { border-bottom: none; }
    .trend-stat-label {
        font-size: 14px;
        color: var(--text-secondary);
    }
    .trend-stat-value {
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
    }
    .trend-chart-placeholder {
        flex: 1 1 300px;
        min-height: 200px;
        background: var(--primary-light);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 16px;
        background-image: url('/assets/images/9fbd87bbd4ed87cb.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.9;
    }
    /* FAQ */
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: box-shadow var(--transition);
    }
    .faq-item.open {
        box-shadow: var(--shadow-hover);
    }
    .faq-question {
        width: 100%;
        text-align: left;
        padding: 20px 24px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-main);
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        cursor: pointer;
        transition: background var(--transition);
        background: transparent;
    }
    .faq-question:hover {
        background: #f8faff;
    }
    .faq-question .faq-icon {
        font-size: 22px;
        color: var(--primary);
        flex-shrink: 0;
        transition: transform var(--transition);
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 24px;
        color: var(--text-secondary);
        line-height: 1.75;
        background: #F8FAFF;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }
    /* Tools & Terms */
    .term-capsules {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }
    .term-capsule {
        background: var(--primary-light);
        color: var(--primary);
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        font-size: 14px;
        font-weight: 500;
    }
    .tool-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 16px;
        margin-top: 20px;
    }
    .tool-item {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 16px;
        text-align: center;
        font-weight: 500;
        color: var(--text-main);
        transition: border-color var(--transition), box-shadow var(--transition);
    }
    .tool-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-sm);
    }
    /* Subscribe CTA */
    .subscribe-cta {
        background: var(--bg-dark);
        border-radius: var(--radius-card);
        padding: 40px 32px;
        color: #fff;
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        align-items: center;
        justify-content: space-between;
    }
    .subscribe-cta h3 {
        font-size: 24px;
        font-weight: 700;
        margin: 0 0 8px;
        color: #fff;
    }
    .subscribe-cta p {
        margin: 0;
        color: #cdd6e4;
        max-width: 500px;
    }
    .subscribe-form {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        align-items: center;
    }
    .subscribe-form input {
        flex: 1 1 220px;
        padding: 12px 16px;
        border-radius: var(--radius-input);
        border: 1px solid rgba(255,255,255,0.3);
        background: rgba(255,255,255,0.1);
        color: #fff;
        font-size: 14px;
        transition: border-color var(--transition);
    }
    .subscribe-form input::placeholder {
        color: #aab8cc;
    }
    .subscribe-form input:focus {
        outline: none;
        border-color: var(--primary);
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        padding: 12px 24px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        transition: background var(--transition), transform var(--transition);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-1px);
    }
    .btn-gold {
        background: var(--accent-gold);
        color: #1a1f2e;
        padding: 12px 24px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        transition: background var(--transition), transform var(--transition);
    }
    .btn-gold:hover {
        background: #e89b1e;
        transform: translateY(-1px);
    }
    /* Footer */
    .site-footer {
        background: var(--bg-dark);
        color: #cdd6e4;
        padding: 48px 0 28px;
        margin-top: 40px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 32px;
        margin-bottom: 32px;
    }
    .footer-brand h4 {
        color: #fff;
        font-size: 20px;
        font-weight: 700;
        margin: 0 0 12px;
    }
    .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        color: #a7b3c7;
        margin: 0;
    }
    .footer-col h5 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin: 0 0 16px;
    }
    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer-col ul li a {
        color: #a7b3c7;
        font-size: 14px;
        transition: color var(--transition);
    }
    .footer-col ul li a:hover {
        color: var(--primary-light);
    }
    .footer-subscribe h5 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin: 0 0 12px;
    }
    .footer-subscribe p {
        font-size: 14px;
        color: #a7b3c7;
        margin: 0 0 16px;
    }
    .footer-subscribe-form {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }
    .footer-subscribe-form input {
        flex: 1 1 180px;
        padding: 10px 14px;
        border-radius: var(--radius-input);
        border: 1px solid rgba(255,255,255,0.2);
        background: rgba(255,255,255,0.08);
        color: #fff;
        font-size: 14px;
    }
    .footer-subscribe-form input::placeholder {
        color: #8b99b0;
    }
    .footer-subscribe-form input:focus {
        outline: none;
        border-color: var(--primary);
    }
    .footer-subscribe-form button {
        background: var(--primary);
        color: #fff;
        padding: 10px 18px;
        border-radius: var(--radius-input);
        font-weight: 600;
        font-size: 14px;
        transition: background var(--transition);
    }
    .footer-subscribe-form button:hover {
        background: var(--primary-dark);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 20px;
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        align-items: center;
        justify-content: space-between;
        font-size: 13px;
        color: #8b99b0;
    }
    .footer-bottom p {
        margin: 0;
    }
    .footer-links {
        display: flex;
        gap: 8px;
        align-items: center;
    }
    .footer-links a {
        color: #a7b3c7;
        font-size: 13px;
    }
    .footer-links a:hover {
        color: var(--primary-light);
    }
    /* Responsive */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .category-hero-content {
            flex-direction: column;
            align-items: flex-start;
        }
        .category-hero-visual {
            width: 100%;
        }
    }
    @media (max-width: 768px) {
        .header-nav-row {
            height: auto;
            flex-direction: column;
            align-items: stretch;
            padding: 8px 0;
        }
        .main-nav {
            flex-wrap: wrap;
            gap: 2px;
        }
        .hot-tags {
            padding: 4px 0;
        }
        .header-top-actions {
            flex-wrap: wrap;
            gap: 10px;
        }
        .header-search-form {
            width: 100%;
        }
        .article-item {
            flex-direction: column;
        }
        .article-item-img {
            width: 100%;
            height: 180px;
        }
        .subscribe-cta {
            flex-direction: column;
            align-items: flex-start;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }
    @media (max-width: 560px) {
        .container {
            padding: 0 16px;
        }
        .header-brand-row {
            height: auto;
            padding: 10px 0;
        }
        .category-hero-text h1 {
            font-size: 28px;
        }
        .section-title {
            font-size: 24px;
        }
        .deep-article {
            padding: 20px;
        }
    }

/* roulang page: category2 */
:root {
            --primary: #1F5EFF;
            --primary-dark: #1746C4;
            --primary-light: #EAF0FF;
            --accent-green: #0FA47A;
            --accent-gold: #F5A524;
            --bg-page: #F5F7FB;
            --bg-card: #FFFFFF;
            --bg-dark: #16233B;
            --text-main: #18243B;
            --text-secondary: #5B6B83;
            --border: #E6EAF2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 10px 30px rgba(23, 38, 80, 0.08);
            --shadow-hover: 0 16px 40px rgba(23, 38, 80, 0.12);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 80px 0;
            --section-pad-mobile: 44px 0;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(230, 234, 242, 0.85);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 24px rgba(23, 38, 80, 0.08);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
        }

        .header-logo {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .header-logo .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--text-main);
        }

        .header-top-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .header-search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            overflow: hidden;
            width: 280px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.12);
        }

        .header-search-form input {
            flex: 1;
            border: none;
            padding: 8px 14px;
            font-size: 14px;
            background: transparent;
            color: var(--text-main);
            min-width: 0;
        }

        .header-search-form input:focus {
            outline: none;
        }

        .header-search-form input::placeholder {
            color: #9aa8bd;
            font-size: 13px;
        }

        .header-search-form button {
            background: var(--primary);
            color: #fff;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 0;
            transition: background var(--transition);
            white-space: nowrap;
        }

        .header-search-form button:hover {
            background: var(--primary-dark);
        }

        .header-nav-row {
            display: flex;
            align-items: center;
            gap: 20px;
            height: 56px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .header-nav-row::-webkit-scrollbar {
            height: 3px;
        }

        .header-nav-row::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

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

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

        .hot-tags {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
            margin-left: auto;
        }

        .hot-tags-label {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .hot-tag {
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
        }

        .hot-tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--bg-card);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: all var(--transition);
        }

        .mobile-menu-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(22, 35, 59, 0.5);
            z-index: 999;
        }

        .mobile-drawer-panel {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            background: var(--bg-card);
            padding: 24px;
            overflow-y: auto;
            box-shadow: -8px 0 30px rgba(23, 38, 80, 0.15);
            display: flex;
            flex-direction: column;
            gap: 16px;
            transform: translateX(100%);
            transition: transform var(--transition);
        }

        .mobile-drawer.open .mobile-drawer-panel {
            transform: translateX(0);
        }

        .mobile-drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .mobile-drawer-close:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav a {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }

        .mobile-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-nav a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .mobile-hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 8px;
            border-top: 1px solid var(--border);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }

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

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

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

        .breadcrumb .separator {
            color: #c0c8d8;
            font-size: 11px;
        }

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

        /* ===== Category Header ===== */
        .category-header-section {
            padding: 56px 0 40px;
            background: linear-gradient(180deg, #EAF0FF 0%, var(--bg-page) 100%);
        }

        .category-header {
            max-width: 800px;
        }

        .category-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .category-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 700px;
        }

        /* ===== Strategy List Section ===== */
        .strategy-list-section {
            padding: 32px 0 64px;
        }

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

        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
        }

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

        .strategy-card-img {
            width: 100%;
            height: 180px;
            overflow: hidden;
            position: relative;
            background: var(--primary-light);
        }

        .strategy-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .strategy-card:hover .strategy-card-img img {
            transform: scale(1.03);
        }

        .strategy-card-img .overlay-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .strategy-card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .strategy-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .strategy-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 16px;
        }

        .strategy-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .strategy-card-date {
            font-size: 12px;
            color: #9aa8bd;
            white-space: nowrap;
        }

        .btn-read-more {
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-read-more:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Deep Article Section ===== */
        .deep-article-section {
            padding: var(--section-pad);
            background: var(--bg-card);
        }

        .deep-article {
            max-width: 800px;
            margin: 0 auto;
        }

        .deep-article h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .deep-article h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-main);
            margin-top: 32px;
            margin-bottom: 12px;
        }

        .deep-article p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-article .article-quote {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
            margin: 24px 0;
        }

        .deep-article .article-quote p {
            margin-bottom: 0;
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
        }

        /* ===== Strategy Data Section ===== */
        .strategy-data-section {
            padding: var(--section-pad);
            background: var(--bg-page);
        }

        .strategy-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 32px;
        }

        .data-stat {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

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

        .data-stat .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 6px;
        }

        .data-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .strategy-table-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .strategy-table-header {
            padding: 20px 24px;
            background: var(--primary-light);
            border-bottom: 1px solid var(--border);
        }

        .strategy-table-header h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }

        .strategy-table-scroll {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .strategy-table {
            width: 100%;
            min-width: 560px;
            border-collapse: collapse;
            font-size: 14px;
        }

        .strategy-table th {
            text-align: left;
            padding: 12px 20px;
            font-weight: 600;
            color: var(--text-main);
            background: #F8FAFF;
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }

        .strategy-table td {
            padding: 12px 20px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
        }

        .strategy-table tr:last-child td {
            border-bottom: none;
        }

        .strategy-table tr:hover td {
            background: #FAFCFF;
        }

        .table-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }

        .table-tag.green {
            background: #E6F7F0;
            color: var(--accent-green);
        }

        .table-tag.gold {
            background: #FFF5E6;
            color: var(--accent-gold);
        }

        .table-tag.blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--section-pad);
            background: var(--bg-card);
        }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 600px;
            margin-bottom: 32px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: all var(--transition);
            position: relative;
        }

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

        .faq-item.open .faq-question {
            color: var(--primary);
            border-left: 3px solid var(--primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition);
        }

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

        .faq-answer {
            padding: 0 20px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            display: none;
            background: #F8FAFF;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

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

        /* ===== Tools and Terms Section ===== */
        .tools-terms-section {
            padding: var(--section-pad);
            background: var(--bg-page);
        }

        .tools-terms-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .tools-block,
        .terms-block {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }

        .tools-block h3,
        .terms-block h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        .tool-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 14px;
            background: #F8FAFF;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }

        .tool-list li:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .tool-list li .tool-icon {
            width: 22px;
            height: 22px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .terms-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .terms-tags a {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #F8FAFF;
            border-radius: var(--radius-pill);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }

        .terms-tags a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }

        /* ===== Subscribe CTA Section ===== */
        .subscribe-section {
            padding: var(--section-pad);
            background: var(--bg-dark);
        }

        .subscribe-box {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }

        .subscribe-box h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .subscribe-box p {
            font-size: 15px;
            color: #B8C4D8;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 500px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
            padding: 14px 18px;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-input);
            color: #fff;
            transition: all var(--transition);
            min-width: 0;
        }

        .subscribe-form input::placeholder {
            color: #8FA0B8;
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.25);
        }

        .btn-primary {
            padding: 14px 28px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-input);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(31, 94, 255, 0.35);
        }

        .subscribe-note {
            font-size: 12px;
            color: #6B7D98;
            margin-top: 12px;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: var(--section-pad);
            background: var(--bg-page);
        }

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

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card-img {
            width: 100%;
            height: 130px;
            overflow: hidden;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .related-card:hover .related-card-img img {
            transform: scale(1.03);
        }

        .related-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body h4 {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .related-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

        .related-card-link {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
        }

        .related-card-link:hover {
            color: var(--primary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #B8C4D8;
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #8FA0B8;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: #8FA0B8;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
        }

        .footer-subscribe h5 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-subscribe p {
            font-size: 13px;
            line-height: 1.7;
            color: #8FA0B8;
            margin-bottom: 14px;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-btn);
            color: #fff;
            transition: all var(--transition);
            min-width: 0;
        }

        .footer-subscribe-form input::placeholder {
            color: #6B7D98;
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 255, 0.25);
        }

        .footer-subscribe-form button {
            padding: 10px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #6B7D98;
        }

        .footer-bottom p {
            margin: 0;
        }

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

        .footer-links a {
            color: #8FA0B8;
            transition: color var(--transition);
        }

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

        .footer-links span {
            color: #4A5B73;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .strategy-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 991px) {
            .strategy-list {
                grid-template-columns: 1fr;
            }
            .tools-terms-grid {
                grid-template-columns: 1fr;
            }
            .header-top-actions {
                gap: 8px;
            }
            .header-search-form {
                width: 220px;
            }
            .header-date {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .header-brand-row {
                height: 52px;
            }
            .header-search-form {
                width: 160px;
            }
            .header-search-form input {
                padding: 6px 10px;
                font-size: 12px;
            }
            .header-search-form button {
                padding: 6px 12px;
                font-size: 12px;
            }
            .header-nav-row {
                gap: 10px;
                height: 48px;
            }
            .main-nav a {
                padding: 6px 12px;
                font-size: 13px;
            }
            .hot-tags {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-nav-row {
                display: none;
            }
            .mobile-drawer {
                display: block;
            }
            .category-header-section {
                padding: 36px 0 28px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .category-header p {
                font-size: 14px;
            }
            .strategy-list-section {
                padding: 20px 0 40px;
            }
            .strategy-list {
                gap: 16px;
            }
            .strategy-card-img {
                height: 160px;
            }
            .deep-article-section,
            .strategy-data-section,
            .faq-section,
            .tools-terms-section,
            .subscribe-section,
            .related-section {
                padding: var(--section-pad-mobile);
            }
            .deep-article h2 {
                font-size: 22px;
            }
            .deep-article h3 {
                font-size: 17px;
            }
            .section-title {
                font-size: 22px;
            }
            .strategy-data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .data-stat {
                padding: 16px;
            }
            .data-stat .stat-number {
                font-size: 22px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input,
            .btn-primary {
                width: 100%;
            }
            .subscribe-box h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 519px) {
            .header-search-form {
                width: 130px;
            }
            .header-search-form button {
                padding: 6px 8px;
                font-size: 11px;
            }
            .header-logo {
                font-size: 17px;
                gap: 5px;
            }
            .header-logo .logo-mark {
                width: 26px;
                height: 26px;
                font-size: 13px;
                border-radius: 7px;
            }
            .container {
                padding: 0 16px;
            }
            .category-header h1 {
                font-size: 22px;
            }
            .strategy-card-body {
                padding: 16px 18px 18px;
            }
            .strategy-card-body h3 {
                font-size: 16px;
            }
            .deep-article p {
                font-size: 14px;
            }
            .strategy-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-stat {
                padding: 12px 10px;
            }
            .data-stat .stat-number {
                font-size: 18px;
            }
            .data-stat .stat-label {
                font-size: 11px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 16px;
                font-size: 13px;
            }
            .tools-block,
            .terms-block {
                padding: 20px;
            }
            .subscribe-box h2 {
                font-size: 20px;
            }
            .subscribe-box p {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1F5EFF;
            --primary-dark: #1746C4;
            --primary-light: #EAF0FF;
            --accent-green: #0FA47A;
            --accent-gold: #F5A524;
            --bg-page: #F5F7FB;
            --bg-card: #FFFFFF;
            --bg-dark: #16233B;
            --text-main: #18243B;
            --text-secondary: #5B6B83;
            --border: #E6EAF2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 10px 30px rgba(23, 38, 80, 0.08);
            --shadow-hover: 0 16px 40px rgba(23, 38, 80, 0.12);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 80px 0;
            --section-pad-mobile: 44px 0;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header/Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(230, 234, 242, 0.85);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 24px rgba(23, 38, 80, 0.08);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
        }

        .header-logo {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .header-logo .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--text-main);
        }

        .header-top-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .header-search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            overflow: hidden;
            width: 280px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.12);
        }

        .header-search-form input {
            flex: 1;
            border: none;
            padding: 8px 14px;
            font-size: 14px;
            background: transparent;
            color: var(--text-main);
        }

        .header-search-form input:focus {
            outline: none;
        }

        .header-search-form input::placeholder {
            color: #9aa8bd;
            font-size: 13px;
        }

        .header-search-form button {
            background: var(--primary);
            color: #fff;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 0;
            transition: background var(--transition);
            white-space: nowrap;
        }

        .header-search-form button:hover {
            background: var(--primary-dark);
        }

        .header-nav-row {
            display: flex;
            align-items: center;
            gap: 20px;
            height: 56px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .header-nav-row::-webkit-scrollbar {
            height: 3px;
        }

        .header-nav-row::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

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

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

        .hot-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            flex-wrap: nowrap;
        }

        .hot-tags-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }

        .hot-tag {
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            display: inline-block;
        }

        .hot-tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 6px;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 0;
            background: transparent;
        }

        .breadcrumb-section .breadcrumb {
            margin-bottom: 0;
            background: transparent;
            font-size: 14px;
        }

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

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

        .breadcrumb-section .breadcrumb .active {
            color: var(--primary);
            font-weight: 500;
        }

        /* Category Hero */
        .category-hero {
            padding: 32px 0 48px;
            background: linear-gradient(135deg, #EAF0FF 0%, #F5F7FB 55%, #FFFFFF 100%);
            border-bottom: 1px solid var(--border);
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 820px;
            line-height: 1.85;
        }

        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .category-hero .hero-meta .badge-tag {
            padding: 6px 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* Content list */
        .content-list-section {
            padding: 56px 0;
        }

        .content-list-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 28px;
            line-height: 1.35;
        }

        .content-card-row {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-bottom: 20px;
            transition: all var(--transition);
            flex-wrap: wrap;
        }

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

        .content-card-img {
            flex: 0 0 260px;
            min-height: 180px;
            background-color: var(--primary-light);
            background-size: cover;
            background-position: center;
        }

        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 180px;
        }

        .content-card-body {
            flex: 1;
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }

        .content-card-body .card-category {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
            width: fit-content;
        }

        .content-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .content-card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.7;
        }

        .content-card-body .card-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .content-card-body .card-actions .btn-read {
            padding: 8px 18px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
        }

        .content-card-body .card-actions .btn-read:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .content-card-body .card-date {
            font-size: 13px;
            color: #9aa8bd;
        }

        /* Deep topic section */
        .deep-topic-section {
            padding: 64px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .deep-topic-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
            line-height: 1.4;
        }

        .deep-topic-section h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin: 28px 0 14px;
            line-height: 1.45;
        }

        .deep-topic-section p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-topic-section .topic-blockquote {
            border-left: 4px solid var(--primary);
            background: #F8FAFF;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
            font-size: 15px;
            color: var(--text-main);
        }

        .deep-topic-section .data-table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }

        .deep-topic-section .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 600px;
        }

        .deep-topic-section .data-table th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            white-space: nowrap;
        }

        .deep-topic-section .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
        }

        /* Trend data module */
        .trend-data-section {
            padding: 56px 0;
        }

        .trend-data-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        .trend-data-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            align-items: center;
        }

        .trend-data-visual {
            flex: 0 0 320px;
            min-height: 220px;
            border-radius: 12px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }

        .trend-data-visual .trend-overlay {
            background: rgba(22, 35, 59, 0.82);
            color: #fff;
            padding: 10px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
        }

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

        .trend-data-info .trend-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .trend-data-info .trend-label {
            font-size: 14px;
            color: var(--text-secondary);
            flex: 0 0 80px;
            font-weight: 500;
        }

        .trend-data-info .trend-bar-bg {
            flex: 1;
            height: 8px;
            background: #EDF1F8;
            border-radius: var(--radius-pill);
            overflow: hidden;
            min-width: 100px;
        }

        .trend-data-info .trend-bar-fill {
            height: 100%;
            border-radius: var(--radius-pill);
            background: var(--primary);
            transition: width 0.6s ease;
        }

        .trend-data-info .trend-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            flex: 0 0 auto;
        }

        /* FAQ */
        .faq-section {
            padding: 56px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 28px;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(23, 38, 80, 0.04);
            background: var(--bg-card);
        }

        .accordion-custom .accordion-button {
            font-weight: 600;
            font-size: 16px;
            color: var(--text-main);
            padding: 18px 22px;
            background: var(--bg-card);
            box-shadow: none;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: #F8FAFF;
            color: var(--primary);
            border-left: 4px solid var(--primary);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(31, 94, 255, 0.15);
        }

        .accordion-custom .accordion-button::after {
            flex-shrink: 0;
        }

        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 18px 22px 20px;
            background: #F8FAFF;
        }

        /* Terms module */
        .terms-section {
            padding: 56px 0;
        }

        .terms-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        .terms-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .term-pill {
            padding: 8px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .term-pill:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            cursor: default;
        }

        .term-pill .term-icon {
            color: var(--accent-gold);
            margin-right: 4px;
        }

        /* Subscribe CTA */
        .subscribe-cta-section {
            padding: 56px 0;
            background: var(--bg-dark);
            border-radius: var(--radius-card);
            margin: 0 0 56px;
        }

        .subscribe-cta-card {
            background: var(--bg-dark);
            padding: 40px 36px;
            border-radius: var(--radius-card);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 28px;
            justify-content: space-between;
        }

        .subscribe-cta-card .cta-text {
            flex: 1;
            min-width: 260px;
        }

        .subscribe-cta-card .cta-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .subscribe-cta-card .cta-text p {
            font-size: 15px;
            color: #B8C4D6;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .subscribe-cta-card .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .subscribe-cta-card .cta-form input {
            padding: 10px 18px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 14px;
            min-width: 220px;
            transition: all var(--transition);
        }

        .subscribe-cta-card .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .subscribe-cta-card .cta-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.25);
        }

        .subscribe-cta-card .cta-form .btn-cta {
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .subscribe-cta-card .cta-form .btn-cta:hover {
            background: var(--primary-dark);
        }

        /* Related */
        .related-section {
            padding: 56px 0 80px;
        }

        .related-section .section-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        .related-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .related-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 16px 20px;
            transition: all var(--transition);
        }

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

        .related-item .related-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

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

        .related-item .related-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .related-item .related-info p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .related-item .related-arrow {
            color: var(--text-secondary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .related-item:hover .related-arrow {
            color: var(--primary);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 56px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: #B8C4D6;
            line-height: 1.75;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            color: #B8C4D6;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
        }

        .footer-subscribe h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-subscribe p {
            font-size: 14px;
            color: #B8C4D6;
            line-height: 1.7;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .footer-subscribe-form input {
            flex: 1;
            min-width: 150px;
            padding: 10px 14px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 13px;
            transition: all var(--transition);
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 255, 0.2);
        }

        .footer-subscribe-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 20px 0;
            font-size: 13px;
            color: #8A96A8;
        }

        .footer-bottom p {
            margin: 0;
        }

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

        .footer-links a {
            color: #8A96A8;
            font-size: 13px;
        }

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

        .footer-links span {
            color: #4A5568;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .header-search-form {
                width: 220px;
            }

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

            .footer-brand {
                grid-column: span 2;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .content-card-img {
                flex: 0 0 200px;
                min-height: 160px;
            }

            .content-card-img img {
                min-height: 160px;
            }

            .trend-data-visual {
                flex: 0 0 100%;
                min-height: 200px;
            }
        }

        @media (max-width: 767px) {
            .header-brand-row {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
                gap: 10px;
            }

            .header-top-actions {
                width: 100%;
                flex-wrap: wrap;
            }

            .header-search-form {
                width: 100%;
                order: 3;
                flex: 1 1 100%;
            }

            .header-date {
                font-size: 12px;
            }

            .header-nav-row {
                height: 48px;
                gap: 12px;
            }

            .main-nav a {
                padding: 6px 12px;
                font-size: 14px;
            }

            .hot-tags {
                gap: 6px;
            }

            .hot-tag {
                padding: 3px 10px;
                font-size: 11px;
            }

            .category-hero {
                padding: 24px 0 36px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

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

            .content-list-section {
                padding: 36px 0;
            }

            .content-card-row {
                flex-direction: column;
            }

            .content-card-img {
                flex: none;
                width: 100%;
                min-height: 180px;
            }

            .content-card-img img {
                min-height: 180px;
            }

            .content-card-body {
                padding: 18px;
            }

            .content-card-body h3 {
                font-size: 16px;
            }

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

            .deep-topic-section {
                padding: 44px 0;
            }

            .deep-topic-section .section-heading {
                font-size: 22px;
            }

            .trend-data-section {
                padding: 36px 0;
            }

            .faq-section {
                padding: 36px 0;
            }

            .terms-section {
                padding: 36px 0;
            }

            .subscribe-cta-section {
                padding: 0;
                margin: 0 0 36px;
            }

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

            .subscribe-cta-card .cta-form {
                width: 100%;
            }

            .subscribe-cta-card .cta-form input {
                flex: 1;
                min-width: 0;
            }

            .related-section {
                padding: 36px 0 56px;
            }

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

            .footer-brand {
                grid-column: span 1;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .header-logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .header-search-form {
                width: 100%;
            }

            .main-nav a {
                padding: 5px 10px;
                font-size: 13px;
            }

            .category-hero h1 {
                font-size: 22px;
            }

            .content-card-body .card-actions {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .content-card-body .card-actions .btn-read {
                width: 100%;
                text-align: center;
            }

            .deep-topic-section h3 {
                font-size: 17px;
            }

            .trend-data-card {
                padding: 18px;
            }

            .accordion-custom .accordion-button {
                font-size: 15px;
                padding: 14px 16px;
            }

            .subscribe-cta-card .cta-form {
                flex-direction: column;
                align-items: stretch;
            }

            .subscribe-cta-card .cta-form .btn-cta {
                width: 100%;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1F5EFF;
            --primary-dark: #1746C4;
            --primary-light: #EAF0FF;
            --accent-green: #0FA47A;
            --accent-gold: #F5A524;
            --bg-page: #F5F7FB;
            --bg-card: #FFFFFF;
            --bg-dark: #16233B;
            --text-main: #18243B;
            --text-secondary: #5B6B83;
            --border: #E6EAF2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 10px 30px rgba(23, 38, 80, 0.08);
            --shadow-hover: 0 16px 40px rgba(23, 38, 80, 0.12);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --section-pad: 80px 0;
            --section-pad-mobile: 44px 0;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-page);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(230, 234, 242, 0.85);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 24px rgba(23, 38, 80, 0.08);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
        }

        .header-logo {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .header-logo .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--text-main);
        }

        .header-top-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .header-search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            overflow: hidden;
            width: 280px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 94, 255, 0.12);
        }

        .header-search-form input {
            flex: 1;
            border: none;
            padding: 8px 14px;
            font-size: 14px;
            background: transparent;
            color: var(--text-main);
        }

        .header-search-form input:focus {
            outline: none;
        }

        .header-search-form input::placeholder {
            color: #9aa8bd;
            font-size: 13px;
        }

        .header-search-form button {
            background: var(--primary);
            color: #fff;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 0;
            transition: background var(--transition);
            white-space: nowrap;
        }

        .header-search-form button:hover {
            background: var(--primary-dark);
        }

        .header-nav-row {
            display: flex;
            align-items: center;
            gap: 20px;
            height: 56px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .header-nav-row::-webkit-scrollbar {
            height: 3px;
        }

        .header-nav-row::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

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

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

        .hot-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .hot-tags-label {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .hot-tag {
            padding: 4px 14px;
            font-size: 13px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition);
        }

        .hot-tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .header-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-main);
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--bg-card);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding: 24px 0 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

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

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

        .breadcrumb .sep {
            color: #b8c4d6;
            font-size: 12px;
        }

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

        /* ===== Page Header ===== */
        .page-head-section {
            padding: 24px 0 40px;
        }

        .page-head-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            display: flex;
            gap: 32px;
            align-items: center;
            overflow: hidden;
            position: relative;
        }

        .page-head-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent-green), var(--accent-gold));
        }

        .page-head-text {
            flex: 1;
            min-width: 0;
        }

        .page-head-text h1 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        .page-head-text h1 .highlight {
            color: var(--primary);
        }

        .page-head-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        .page-head-image {
            flex-shrink: 0;
            width: 320px;
            height: 200px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .page-head-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== Section Common ===== */
        section {
            padding: var(--section-pad);
        }

        .section-title-area {
            margin-bottom: 36px;
        }

        .section-title-area h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .section-title-area h2 .highlight {
            color: var(--primary);
        }

        .section-title-area p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }

        .section-alt-bg {
            background: #eef2f8;
        }

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

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 28px 22px;
            position: relative;
            transition: all var(--transition);
        }

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

        .step-card .step-number {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .step-card:nth-child(2) .step-number {
            background: var(--accent-green);
        }

        .step-card:nth-child(3) .step-number {
            background: var(--accent-gold);
        }

        .step-card:nth-child(4) .step-number {
            background: var(--primary-dark);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Deep Content ===== */
        .deep-content-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content-card h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-main);
            line-height: 1.4;
        }

        .deep-content-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--text-main);
            line-height: 1.45;
        }

        .deep-content-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-content-card .pull-quote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 10px 10px 0;
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.8;
            margin: 20px 0;
            font-weight: 500;
        }

        /* ===== Term Tags ===== */
        .term-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .term-tag {
            padding: 8px 18px;
            font-size: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            color: var(--text-main);
            font-weight: 500;
            cursor: default;
            transition: all var(--transition);
        }

        .term-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .term-tag .term-en {
            font-size: 12px;
            color: var(--accent-green);
            margin-left: 6px;
            font-weight: 600;
        }

        .term-tag:hover .term-en {
            color: #d4ffec;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: 12px;
            box-shadow: 0 4px 16px rgba(23, 38, 80, 0.06);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(31, 94, 255, 0.1);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            gap: 16px;
        }

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

        .faq-question .faq-indicator {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            background: #F8FAFF;
            border-radius: 8px;
            padding: 14px 18px;
            border-left: 3px solid var(--primary);
        }

        /* ===== Tools Recommend ===== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 24px 22px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }

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

        .tool-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            background: var(--primary-light);
            color: var(--primary);
        }

        .tool-card:nth-child(2) .tool-icon {
            background: #E6F7F0;
            color: var(--accent-green);
        }

        .tool-card:nth-child(3) .tool-icon {
            background: #FFF7E0;
            color: var(--accent-gold);
        }

        .tool-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .tool-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA Section ===== */
        .cta-banner {
            background: var(--bg-dark);
            border-radius: var(--radius-card);
            padding: 44px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: var(--shadow-hover);
        }

        .cta-banner-text {
            flex: 1;
            min-width: 0;
        }

        .cta-banner-text h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .cta-banner-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
        }

        .cta-banner-actions {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
            min-width: 200px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: var(--accent-gold);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #d98e0b;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-secondary-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-secondary-outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand h4 {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
        }

        .footer-subscribe h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-subscribe p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-input);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 14px;
            transition: border-color var(--transition);
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-subscribe-form button {
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-btn);
            transition: background var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom p {
            margin: 0;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            transition: color var(--transition);
        }

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

        .footer-links span {
            color: rgba(255, 255, 255, 0.3);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-head-card {
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
            }
            .page-head-image {
                width: 100%;
                height: 220px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cta-banner {
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
                gap: 20px;
            }
            .cta-banner-actions {
                flex-direction: row;
                min-width: auto;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-pad-mobile);
            }
            .container {
                padding: 0 20px;
            }
            .header-search-form {
                width: 200px;
            }
            .header-menu-toggle {
                display: flex;
            }
            .header-nav-row {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                height: auto;
                padding: 16px 20px;
                gap: 12px;
                box-shadow: 0 12px 24px rgba(23, 38, 80, 0.12);
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                z-index: 990;
            }
            .header-nav-row.open {
                transform: translateY(0);
            }
            .main-nav {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                gap: 2px;
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }
            .hot-tags {
                flex-wrap: wrap;
                gap: 6px;
            }
            .hot-tags-label {
                display: none;
            }
            .page-head-card {
                padding: 28px 22px;
            }
            .page-head-text h1 {
                font-size: 24px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .tools-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .deep-content-card {
                padding: 28px 22px;
            }
            .deep-content-card h2 {
                font-size: 22px;
            }
            .cta-banner {
                padding: 28px 22px;
            }
            .cta-banner-text h2 {
                font-size: 22px;
            }
            .cta-banner-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-banner-actions .btn-primary,
            .cta-banner-actions .btn-secondary-outline {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-links {
                justify-content: center;
            }
        }

        @media (max-width: 560px) {
            .header-search-form {
                width: 160px;
            }
            .header-search-form button {
                padding: 8px 10px;
                font-size: 12px;
            }
            .header-search-form input {
                font-size: 13px;
                padding: 8px 10px;
            }
            .header-date {
                font-size: 11px;
            }
            .page-head-card {
                padding: 22px 16px;
            }
            .page-head-text h1 {
                font-size: 21px;
            }
            .page-head-text p {
                font-size: 14px;
            }
            .page-head-image {
                height: 160px;
            }
            .section-title-area h2 {
                font-size: 22px;
            }
            .step-card {
                padding: 20px 16px;
            }
            .step-card .step-number {
                width: 36px;
                height: 36px;
                font-size: 15px;
                border-radius: 10px;
            }
            .deep-content-card {
                padding: 20px 16px;
            }
            .deep-content-card h2 {
                font-size: 20px;
            }
            .deep-content-card h3 {
                font-size: 16px;
            }
            .deep-content-card p {
                font-size: 14px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer p {
                font-size: 13px;
                padding: 10px 14px;
            }
            .term-tag {
                font-size: 13px;
                padding: 6px 14px;
            }
            .cta-banner-text h2 {
                font-size: 19px;
            }
            .cta-banner {
                padding: 22px 16px;
            }
        }

/* roulang page: category4 */
:root {
  --primary: #1F5EFF;
  --primary-dark: #1746C4;
  --primary-light: #EAF0FF;
  --accent-green: #0FA47A;
  --accent-gold: #F5A524;
  --bg-page: #F5F7FB;
  --bg-card: #FFFFFF;
  --bg-dark: #16233B;
  --text-main: #18243B;
  --text-secondary: #5B6B83;
  --border: #E6EAF2;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 10px 30px rgba(23,38,80,0.08);
  --shadow-hover: 0 16px 40px rgba(23,38,80,0.12);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --container-max: 1200px;
  --section-pad: 80px 0;
  --section-pad-mobile: 44px 0;
  --transition: 0.25s ease;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
a:hover {
  color: var(--primary-dark);
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Header/Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(230,234,242,0.85);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 8px 24px rgba(23,38,80,0.08);
}
.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.header-logo {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.header-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
}
.header-logo:hover {
  color: var(--text-main);
}
.header-top-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.header-date {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.4px;
  white-space: nowrap;
}
.header-search-form {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  overflow: hidden;
  width: 280px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(31,94,255,0.12);
}
.header-search-form input {
  flex: 1;
  border: none;
  padding: 8px 14px;
  font-size: 14px;
  background: transparent;
  color: var(--text-main);
}
.header-search-form input:focus {
  outline: none;
}
.header-search-form input::placeholder {
  color: #9aa8bd;
  font-size: 13px;
}
.header-search-form button {
  background: var(--primary);
  color: #fff;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 0;
  transition: background var(--transition);
  white-space: nowrap;
}
.header-search-form button:hover {
  background: var(--primary-dark);
}
.header-nav-row {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 56px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  -webkit-overflow-scrolling: touch;
}
.header-nav-row::-webkit-scrollbar {
  height: 3px;
}
.header-nav-row::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.main-nav a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: all var(--transition);
  position: relative;
}
.main-nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.main-nav a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
.hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.hot-tags-label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.hot-tag {
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: all var(--transition);
}
.hot-tag:hover {
  background: #d6e2ff;
  color: var(--primary-dark);
}
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1101;
}
.mobile-nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}
.mobile-nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-nav-panel {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(23,38,80,0.12);
  z-index: 1100;
  padding: 16px 24px 24px;
}
.mobile-nav-panel.open {
  display: block;
}
.mobile-nav-panel .mobile-search {
  margin-bottom: 16px;
}
.mobile-nav-panel .mobile-search form {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  overflow: hidden;
}
.mobile-nav-panel .mobile-search input {
  flex: 1;
  padding: 10px 14px;
  border: none;
  font-size: 14px;
  background: #fff;
  color: var(--text-main);
}
.mobile-nav-panel .mobile-search input:focus {
  outline: none;
}
.mobile-nav-panel .mobile-search button {
  background: var(--primary);
  color: #fff;
  padding: 10px 18px;
  font-weight: 600;
}
.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav-links a {
  padding: 12px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-btn);
  transition: all var(--transition);
}
.mobile-nav-links a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.mobile-nav-links a.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.mobile-hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ===== Breadcrumb ===== */
.breadcrumb-section {
  padding: 24px 0 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: #b6c2d4;
  font-size: 12px;
}
.breadcrumb .current {
  color: var(--text-main);
  font-weight: 500;
}

/* ===== Page Hero ===== */
.category-hero {
  padding: 32px 0 40px;
  background: linear-gradient(135deg, #EAF0FF 0%, #F5F7FB 55%, #FFFFFF 100%);
}
.category-hero-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 40px;
  align-items: center;
}
.category-hero-text h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.category-hero-text h1 .highlight {
  color: var(--primary);
}
.category-hero-text .hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 680px;
}
.category-hero-text .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.category-hero-text .hero-meta .meta-badge {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.category-hero-text .hero-meta .meta-badge.green {
  color: var(--accent-green);
  border-color: rgba(15,164,122,0.2);
  background: #EDF9F4;
}
.category-hero-text .hero-meta .meta-badge.blue {
  color: var(--primary);
  border-color: rgba(31,94,255,0.2);
  background: var(--primary-light);
}
.category-hero-text .hero-meta .meta-badge.gold {
  color: #C47A00;
  border-color: rgba(245,165,36,0.25);
  background: #FFF8E8;
}
.category-hero-image {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-height: 260px;
}
.category-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-card);
}

/* ===== Section Styles ===== */
.section {
  padding: var(--section-pad);
}
.section-alt {
  background: #fff;
}
.section-header {
  margin-bottom: 36px;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-main);
  letter-spacing: 0.4px;
  margin-bottom: 10px;
}
.section-title .highlight {
  color: var(--primary);
}
.section-lead {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 760px;
}

/* ===== Intelligence List ===== */
.intel-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.intel-item {
  display: grid;
  grid-template-columns: 90px 220px 1fr auto;
  gap: 24px;
  align-items: center;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 18px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.intel-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.intel-date-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
}
.intel-date-block .day {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.intel-date-block .month {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.intel-item-image {
  width: 220px;
  height: 140px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.intel-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.intel-item:hover .intel-item-image img {
  transform: scale(1.04);
}
.intel-item-content {
  flex: 1;
  min-width: 0;
}
.intel-item-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}
.intel-item-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 10px;
}
.intel-item-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.intel-tag {
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  background: var(--primary-light);
  color: var(--primary);
}
.intel-tag.green {
  background: #EDF9F4;
  color: var(--accent-green);
}
.intel-tag.gold {
  background: #FFF8E8;
  color: #C47A00;
}
.intel-item-content .read-more-btn {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  position: relative;
  transition: all var(--transition);
}
.intel-item-content .read-more-btn::after {
  content: '→';
  margin-left: 6px;
  transition: transform var(--transition);
  display: inline-block;
}
.intel-item-content .read-more-btn:hover {
  color: var(--primary-dark);
}
.intel-item-content .read-more-btn:hover::after {
  transform: translateX(4px);
}

/* ===== Deep Article ===== */
.deep-article {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 40px 44px;
  box-shadow: var(--shadow-sm);
}
.deep-article h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.4;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-light);
}
.deep-article h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin: 28px 0 12px;
  line-height: 1.5;
}
.deep-article p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}
.deep-article blockquote {
  border-left: 3px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 20px 0;
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.8;
}
.deep-article blockquote p {
  margin-bottom: 0;
  color: var(--text-main);
}
.article-data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 22px;
  font-size: 14px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(23,38,80,0.05);
}
.article-data-table th {
  background: var(--primary-light);
  color: var(--text-main);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
}
.article-data-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.article-data-table tr:last-child td {
  border-bottom: none;
}
.table-scroll {
  overflow-x: auto;
  border-radius: 12px;
}

/* ===== Data Module ===== */
.data-module-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}
.data-module-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 28px 30px;
  box-shadow: var(--shadow-sm);
}
.data-module-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}
.data-module-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}
.data-bars {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.data-bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.data-bar-label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  width: 110px;
  flex-shrink: 0;
}
.data-bar-track {
  flex: 1;
  height: 8px;
  background: var(--primary-light);
  border-radius: 999px;
  overflow: hidden;
}
.data-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--primary);
  transition: width 1s ease;
}
.data-bar-fill.green {
  background: var(--accent-green);
}
.data-bar-fill.gold {
  background: var(--accent-gold);
}
.data-bar-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  width: 40px;
  text-align: right;
}
.source-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.source-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #F8FAFF;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.source-item .source-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.source-item .source-dot.green {
  background: var(--accent-green);
}
.source-item .source-dot.gold {
  background: var(--accent-gold);
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 860px;
}
.faq-item {
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open {
  border-color: rgba(31,94,255,0.3);
  box-shadow: 0 8px 24px rgba(23,38,80,0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: all var(--transition);
  background: none;
  border: none;
  cursor: pointer;
}
.faq-question:hover {
  color: var(--primary);
  background: #F8FAFF;
}
.faq-question .faq-icon {
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
  font-weight: 400;
  line-height: 1;
}
.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 20px 18px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  background: #F8FAFF;
  border-left: 3px solid var(--primary);
  margin-left: 20px;
  border-radius: 0 0 0 8px;
}
.faq-item.open .faq-answer {
  display: block;
}

/* ===== Terms Module ===== */
.terms-module {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 30px 32px;
  box-shadow: var(--shadow-sm);
}
.terms-module h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}
.terms-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.term-pill {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.term-pill:hover {
  background: #d6e2ff;
  color: var(--primary-dark);
}
.term-pill.green {
  background: #EDF9F4;
  color: var(--accent-green);
}
.term-pill.gold {
  background: #FFF8E8;
  color: #C47A00;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, #16233B 0%, #1F3A5F 100%);
  border-radius: 20px;
  padding: 50px 44px;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
  color: #fff;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.82);
  line-height: 1.8;
  max-width: 620px;
  margin: 0 auto 26px;
}
.cta-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}
.cta-form input {
  flex: 1;
  padding: 14px 18px;
  border-radius: var(--radius-input);
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 15px;
  backdrop-filter: blur(4px);
  transition: all var(--transition);
}
.cta-form input::placeholder {
  color: rgba(255,255,255,0.55);
}
.cta-form input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255,255,255,0.15);
  box-shadow: 0 0 0 4px rgba(31,94,255,0.25);
}
.cta-btn {
  padding: 14px 24px;
  border-radius: var(--radius-btn);
  background: var(--accent-gold);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: all var(--transition);
}
.cta-btn:hover {
  background: #E09514;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(245,165,36,0.35);
}

/* ===== Related Recommendations ===== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.related-card-image {
  height: 160px;
  overflow: hidden;
}
.related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.related-card:hover .related-card-image img {
  transform: scale(1.05);
}
.related-card-body {
  padding: 20px 22px;
}
.related-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 8px;
}
.related-card-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}
.related-card-body .related-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition);
}
.related-card-body .related-link:hover {
  color: var(--primary-dark);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.82);
  padding: 50px 0 20px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand h4 {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255,255,255,0.65);
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-col ul a {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--primary-light);
}
.footer-subscribe h5 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.footer-subscribe p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: 14px;
}
.footer-subscribe-form {
  display: flex;
  gap: 8px;
}
.footer-subscribe-form input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-input);
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 13px;
}
.footer-subscribe-form input::placeholder {
  color: rgba(255,255,255,0.45);
}
.footer-subscribe-form input:focus {
  outline: none;
  border-color: var(--primary);
}
.footer-subscribe-form button {
  padding: 10px 18px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  transition: background var(--transition);
  white-space: nowrap;
}
.footer-subscribe-form button:hover {
  background: var(--primary-dark);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  font-size: 12px;
  color: rgba(255,255,255,0.55);
}
.footer-bottom p {
  margin: 0;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 12px;
  transition: color var(--transition);
}
.footer-links a:hover {
  color: var(--primary-light);
}
.footer-links span {
  color: rgba(255,255,255,0.35);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .category-hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .category-hero-image {
    min-height: 220px;
  }
  .intel-item {
    grid-template-columns: 70px 170px 1fr;
    gap: 16px;
    padding: 14px 16px;
  }
  .intel-item-image {
    width: 170px;
    height: 115px;
  }
  .intel-date-block .day {
    font-size: 20px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: var(--section-pad-mobile);
  }
  .header-search-form {
    display: none;
  }
  .header-date {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }
  .header-nav-row {
    display: none;
  }
  .category-hero-text h1 {
    font-size: 30px;
  }
  .category-hero-image {
    min-height: 180px;
  }
  .intel-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .intel-item-image {
    width: 100%;
    height: 170px;
  }
  .intel-date-block {
    flex-direction: row;
    gap: 8px;
    padding: 8px 14px;
  }
  .intel-date-block .day {
    font-size: 18px;
  }
  .data-module-grid {
    grid-template-columns: 1fr;
  }
  .cta-section {
    padding: 36px 24px;
  }
  .cta-form {
    flex-direction: column;
  }
  .cta-btn {
    width: 100%;
  }
  .deep-article {
    padding: 26px 22px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}
@media (max-width: 560px) {
  .container {
    padding: 0 16px;
  }
  .category-hero-text h1 {
    font-size: 26px;
  }
  .category-hero-text .hero-desc {
    font-size: 14px;
  }
  .breadcrumb-section {
    padding-top: 16px;
  }
  .breadcrumb {
    font-size: 12px;
  }
  .section-title {
    font-size: 22px;
  }
  .deep-article h2 {
    font-size: 20px;
  }
  .deep-article h3 {
    font-size: 16px;
  }
  .cta-section h2 {
    font-size: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}