/* roulang page: index */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

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

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

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-blue-light {
            background-color: var(--color-bg-blue);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-secondary {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: #D97706;
            border-color: #D97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }
        .btn-lg {
            padding: 13px 30px;
            font-size: 15px;
            border-radius: 10px;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
            border-radius: 7px;
        }

        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            background-color: #F1F5F9;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }
        .badge-blue {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .badge-green {
            background-color: #D1FAE5;
            color: #065F46;
            border: 1px solid #A7F3D0;
        }
        .badge-amber {
            background-color: #FEF3C7;
            color: #92400E;
            border: 1px solid #FDE68A;
        }
        .badge-gray {
            background-color: #F1F5F9;
            color: #475569;
            border: 1px solid #E2E8F0;
        }

        .kpi-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .kpi-label {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
            margin-top: 4px;
        }
        .kpi-unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-secondary);
        }

        .data-highlight {
            color: var(--color-accent);
            font-weight: 700;
        }
        .data-highlight-green {
            color: var(--color-accent-green);
            font-weight: 700;
        }

        .table-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            background-color: #fff;
            box-shadow: var(--color-card-shadow-sm);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .data-table thead th {
            background-color: var(--color-bg-alt);
            color: var(--color-text-secondary);
            font-weight: 600;
            text-align: left;
            padding: 14px 18px;
            border-bottom: 2px solid var(--color-border);
            white-space: nowrap;
            border-right: 1px solid var(--color-border);
        }
        .data-table thead th:last-child {
            border-right: none;
        }
        .data-table tbody td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-main);
            vertical-align: middle;
            border-right: 1px solid #F1F5F9;
        }
        .data-table tbody td:last-child {
            border-right: none;
        }
        .data-table tbody tr:nth-child(even) {
            background-color: #FAFBFC;
        }
        .data-table tbody tr:hover {
            background-color: var(--color-primary-light);
        }
        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-primary), var(--color-primary-border));
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 28px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 8px;
            width: 10px;
            height: 10px;
            background-color: var(--color-primary);
            border-radius: 50%;
            border: 2px solid #fff;
            box-shadow: 0 0 0 3px var(--color-primary-border);
        }
        .timeline-item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 4px;
        }
        .timeline-item-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background-color: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-primary-border);
            box-shadow: var(--color-card-shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            background-color: #fff;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: all var(--transition-fast);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-fast);
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }
        .faq-answer-inner {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
        }

        .input-field {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            color: var(--color-text-main);
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            outline: none;
        }
        .input-field:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .input-field::placeholder {
            color: var(--color-text-muted);
        }

        .icon-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 20px;
            flex-shrink: 0;
            border: 1px solid var(--color-primary-border);
        }

        .icon-badge-green {
            background-color: #D1FAE5;
            color: #065F46;
            border-color: #A7F3D0;
        }
        .icon-badge-amber {
            background-color: #FEF3C7;
            color: #92400E;
            border-color: #FDE68A;
        }
        .icon-badge-blue {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            border-color: var(--color-primary-border);
        }
        .icon-badge-slate {
            background-color: #F1F5F9;
            color: #475569;
            border-color: #E2E8F0;
        }

        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, var(--color-border), transparent);
            margin: 0 auto;
            max-width: 400px;
        }

        .scrollbar-hide {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }

        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .marquee-wrapper {
            overflow: hidden;
            position: relative;
            width: 100%;
        }
        .marquee-track {
            display: flex;
            animation: marquee 30s linear infinite;
            width: max-content;
        }
        .marquee-wrapper:hover .marquee-track {
            animation-play-state: paused;
        }
        .marquee-item {
            flex-shrink: 0;
            padding: 0 28px;
            font-size: 13px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            border-right: 1px solid var(--color-border);
            white-space: nowrap;
        }

        .search-box {
            width: 100%;
            max-width: 560px;
            display: flex;
            align-items: center;
            background-color: #fff;
            border: 2px solid var(--color-primary);
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--color-card-shadow-md);
            transition: all var(--transition-normal);
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15), var(--color-card-shadow-md);
            border-color: var(--color-primary-dark);
        }
        .search-box input {
            flex: 1;
            padding: 13px 20px;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--color-text-main);
            background: transparent;
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box button {
            padding: 12px 28px;
            background-color: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-fast);
            border-radius: 0;
            height: 100%;
        }
        .search-box button:hover {
            background-color: var(--color-primary-darker);
        }

        .quick-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .quick-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .quick-tag:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            transform: translateY(-1px);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

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

        .text-center {
            text-align: center;
        }
        .text-left {
            text-align: left;
        }
        .text-right {
            text-align: right;
        }

        .mt-0 { margin-top: 0; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mt-5 { margin-top: 48px; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .mb-5 { margin-bottom: 48px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .gap-3 { gap: 24px; }

        .font-bold { font-weight: 700; }
        .font-semibold { font-weight: 600; }
        .font-medium { font-weight: 500; }
        .text-sm { font-size: 13px; }
        .text-base { font-size: 15px; }
        .text-lg { font-size: 18px; }
        .text-xl { font-size: 20px; }
        .text-2xl { font-size: 24px; }
        .text-3xl { font-size: 30px; }

        .text-primary { color: var(--color-primary); }
        .text-secondary { color: var(--color-text-secondary); }
        .text-muted { color: var(--color-text-muted); }
        .text-main { color: var(--color-text-main); }

        .bg-white { background-color: #fff; }
        .bg-alt { background-color: var(--color-bg-alt); }
        .bg-blue-light { background-color: var(--color-bg-blue); }
        .bg-primary-light { background-color: var(--color-primary-light); }

        .rounded-sm { border-radius: var(--radius-sm); }
        .rounded-md { border-radius: var(--radius-md); }
        .rounded-lg { border-radius: var(--radius-lg); }
        .rounded-xl { border-radius: var(--radius-xl); }

        .border { border: 1px solid var(--color-border); }
        .border-primary { border-color: var(--color-primary-border); }
        .shadow-sm { box-shadow: var(--color-card-shadow-sm); }
        .shadow-md { box-shadow: var(--color-card-shadow-md); }
        .shadow-lg { box-shadow: var(--color-card-shadow-lg); }

        .p-1 { padding: 8px; }
        .p-2 { padding: 16px; }
        .p-3 { padding: 24px; }
        .p-4 { padding: 32px; }
        .p-5 { padding: 48px; }

        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .kpi-number { font-size: 30px; }
            .section-title { font-size: 23px; }
            .section { padding: 56px 0; }
        }

        @media (max-width: 768px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
            .section { padding: 44px 0; }
            .section-title { font-size: 20px; }
            .section-desc { font-size: 14px; }
            .kpi-number { font-size: 26px; }
            .btn-lg { padding: 11px 22px; font-size: 14px; }
            .search-box input { padding: 11px 16px; font-size: 13px; }
            .search-box button { padding: 10px 18px; font-size: 13px; }
            .data-table { font-size: 12px; }
            .data-table thead th, .data-table tbody td { padding: 10px 12px; }
            .timeline { padding-left: 24px; }
            .timeline-item::before { left: -20px; width: 8px; height: 8px; }
            .quick-tag { font-size: 12px; padding: 6px 12px; }
        }

        @media (max-width: 520px) {
            .container-custom { padding: 0 14px; }
            .section { padding: 36px 0; }
            .section-title { font-size: 18px; }
            .kpi-number { font-size: 22px; }
            .btn { font-size: 13px; padding: 8px 16px; }
            .btn-lg { padding: 10px 18px; font-size: 13px; }
            .card { border-radius: 10px; }
            .faq-question { padding: 13px 16px; font-size: 14px; }
            .faq-answer-inner { font-size: 13px; }
            .input-field { padding: 10px 14px; font-size: 13px; }
            .marquee-item { padding: 0 16px; font-size: 12px; }
            .quick-tag { font-size: 11px; padding: 5px 10px; }
            .icon-badge { width: 40px; height: 40px; font-size: 16px; border-radius: 10px; }
        }

        /* nav styles */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }
        .site-header.scrolled {
            box-shadow: var(--color-card-shadow-md);
        }
        .site-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 16px;
            position: relative;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-main);
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }
        .nav-logo:hover {
            color: var(--color-primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .nav-menu li a.active {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 9px 18px;
            font-size: 13px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }
        .hamburger:hover {
            background-color: var(--color-primary-light);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text-main);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-card-shadow-lg);
            padding: 16px 20px;
            z-index: 99;
            max-height: 70vh;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-main);
            border-radius: 8px;
            transition: all var(--transition-fast);
        }
        .mobile-menu a:hover {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
        }
        .mobile-menu a.active {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }
        @media (max-width: 520px) {
            .site-nav {
                padding: 10px 14px;
                gap: 10px;
            }
            .nav-logo {
                font-size: 17px;
                gap: 6px;
            }
            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-cta .btn {
                padding: 7px 13px;
                font-size: 12px;
            }
        }

        footer {
            background-color: #0F172A;
            color: #C1C9D9;
        }
        footer .footer-top {
            padding: 52px 0 32px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
        }
        footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        footer .footer-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.8;
            max-width: 320px;
        }
        footer .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        footer .footer-links {
            list-style: none;
        }
        footer .footer-links li {
            margin-bottom: 10px;
        }
        footer .footer-links a {
            font-size: 13px;
            color: #94A3B8;
            transition: color var(--transition-fast);
        }
        footer .footer-links a:hover {
            color: #60A5FA;
        }
        footer .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: #64748B;
        }
        @media (max-width: 768px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            footer .footer-top {
                padding: 36px 0 24px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--color-bg-alt);
        }
        .section-blue-light {
            background-color: var(--color-bg-blue);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-secondary {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: #D97706;
            border-color: #D97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
        }
        .btn-sm {
            font-size: 13px;
            padding: 8px 18px;
        }
        .btn-lg {
            font-size: 15px;
            padding: 13px 30px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
        }
        .site-nav {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--color-text-main);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            letter-spacing: 0.05em;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .nav-menu li a.active {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition-fast);
        }
        .hamburger:hover {
            border-color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-text-main);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 68px;
            left: 0;
            right: 0;
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-card-shadow-lg);
            padding: 16px 20px 20px;
            flex-direction: column;
            gap: 4px;
            z-index: 49;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }
        .mobile-menu a:hover {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
        }
        .mobile-menu a.active {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 600;
        }
        .page-header {
            background-color: var(--color-bg-blue);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-text-muted);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .page-header .header-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 20px;
        }
        .header-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .header-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .filter-chip.active {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .match-card {
            display: flex;
            flex-direction: column;
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-card-shadow-sm);
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .match-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }
        .match-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background-color: var(--color-bg-alt);
        }
        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .match-card:hover .match-card-img img {
            transform: scale(1.04);
        }
        .match-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background-color: var(--color-primary);
            border-radius: 6px;
            letter-spacing: 0.03em;
        }
        .match-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .match-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.5;
            letter-spacing: -0.01em;
        }
        .match-card-title a:hover {
            color: var(--color-primary);
        }
        .match-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .match-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .match-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 6px;
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .badge-green {
            background-color: #ECFDF5;
            color: var(--color-accent-green);
            border: 1px solid #A7F3D0;
        }
        .badge-amber {
            background-color: #FFFBEB;
            color: var(--color-accent);
            border: 1px solid #FDE68A;
        }
        .data-summary-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-summary-item {
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-normal);
        }
        .data-summary-item:hover {
            box-shadow: var(--color-card-shadow-md);
            border-color: var(--color-primary-border);
        }
        .data-summary-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-summary-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .data-summary-trend {
            font-size: 12px;
            color: var(--color-accent-green);
            font-weight: 600;
            margin-top: 4px;
        }
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-md);
            border: 1px solid var(--color-border);
            background-color: var(--color-bg-alt);
            min-height: 280px;
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 14px;
        }
        .feature-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .feature-list li::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .hot-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .hot-card {
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-normal);
        }
        .hot-card:hover {
            box-shadow: var(--color-card-shadow-md);
            border-color: var(--color-primary-border);
            transform: translateY(-2px);
        }
        .hot-card-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .hot-card-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 4px;
        }
        .hot-card-content p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .faq-item {
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .faq-item:hover {
            border-color: var(--color-primary-border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            cursor: pointer;
            gap: 12px;
            background: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }
        .cta-banner {
            background-color: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--color-card-shadow-lg);
        }
        .cta-banner-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .cta-banner-content p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }
        .cta-banner .btn-white {
            background-color: #fff;
            color: var(--color-primary);
            border: 2px solid #fff;
        }
        .cta-banner .btn-white:hover {
            background-color: var(--color-primary-light);
            border-color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.25);
            color: var(--color-primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding: 48px 0 36px;
            border-bottom: 1px solid var(--color-border);
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            padding: 18px 0;
            text-align: center;
            font-size: 12px;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .data-summary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hot-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .data-summary-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .data-summary-value {
                font-size: 24px;
            }
            .hot-card-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }
            .site-nav {
                height: 60px;
            }
            .mobile-menu {
                top: 60px;
            }
        }
        @media (max-width: 520px) {
            .data-summary-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .match-card-img {
                height: 150px;
            }
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .cta-banner-content h3 {
                font-size: 18px;
            }
            .filter-bar {
                gap: 6px;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

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

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

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-blue-light {
            background-color: var(--color-bg-blue);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

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

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

        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-accent:hover {
            background-color: #d97706;
            border-color: #d97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

        .btn-sm {
            font-size: 13px;
            padding: 8px 18px;
        }

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

        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
            white-space: nowrap;
        }

        .badge-accent {
            background-color: #fef3c7;
            color: #b45309;
            border-color: #fde68a;
        }

        .badge-green {
            background-color: #d1fae5;
            color: #065f46;
            border-color: #a7f3d0;
        }

        .stat-num {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 4px;
        }

        .guide-card .guide-img {
            aspect-ratio: 16/9;
            background-color: #e2e8f0;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .guide-card .guide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .guide-card .guide-body {
            padding: 20px 22px 22px;
        }

        .guide-card .guide-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--color-text-main);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .guide-card:hover .guide-title {
            color: var(--color-primary);
        }

        .guide-card .guide-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .faq-item {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            position: relative;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
        }

        .faq-question .faq-icon::before,
        .faq-question .faq-icon::after {
            content: '';
            position: absolute;
            background-color: currentColor;
            border-radius: 4px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .faq-question .faq-icon::before {
            width: 14px;
            height: 2px;
        }

        .faq-question .faq-icon::after {
            width: 2px;
            height: 14px;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }

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

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--color-text-muted);
            font-size: 11px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--color-border);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .site-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            white-space: nowrap;
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

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

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

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: 6px;
            transition: background-color var(--transition-fast);
        }

        .hamburger:hover {
            background-color: var(--color-bg-alt);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text-main);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 20px 16px;
            background-color: #fff;
            border-top: 1px solid var(--color-border);
        }

        .mobile-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 10px 12px;
            border-radius: 6px;
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
        }

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

        .guide-hero {
            background-color: var(--color-bg-alt);
            border-bottom: 1px solid var(--color-border);
            padding: 56px 0 40px;
        }

        .guide-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .guide-hero .guide-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 780px;
        }

        .quick-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .quick-entry-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            text-align: left;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .quick-entry-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .quick-entry-card .entry-icon {
            font-size: 24px;
            line-height: 1;
            margin-bottom: 4px;
        }

        .quick-entry-card .entry-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-main);
        }

        .quick-entry-card .entry-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

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

        .data-banner {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-card-shadow-sm);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-item {
            text-align: center;
            padding: 8px 4px;
        }

        .data-item .data-num {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

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

        .data-item .data-note {
            font-size: 11px;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

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

        .feature-image-block .feature-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .feature-image-block .feature-text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-image-block .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4/3;
        }

        .feature-image-block .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .recommend-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all var(--transition-normal);
        }

        .recommend-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .recommend-card .rec-category {
            font-size: 12px;
            color: var(--color-primary);
            font-weight: 600;
            margin-bottom: 6px;
        }

        .recommend-card .rec-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .recommend-card .rec-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .cta-banner {
            background-color: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: #fff;
        }

        .cta-banner h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
            color: #fff;
        }

        .cta-banner p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            line-height: 1.7;
        }

        .cta-banner .btn-white {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid #fff;
            font-weight: 700;
        }

        .cta-banner .btn-white:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            color: var(--color-primary-darker);
        }

        .footer {
            background-color: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }

        .footer-top {
            border-bottom: 1px solid var(--color-border);
            padding-bottom: 32px;
            margin-bottom: 20px;
        }

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

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 12px;
        }

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

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

        .footer-links a {
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

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

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

        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .quick-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .feature-image-block {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                height: 56px;
                gap: 12px;
            }
            .nav-menu {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.show {
                display: flex;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .guide-hero {
                padding: 40px 0 28px;
            }
            .guide-hero h1 {
                font-size: 26px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .quick-entry-grid {
                grid-template-columns: 1fr;
            }
            .data-banner {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px;
                gap: 12px;
            }
            .data-item .data-num {
                font-size: 24px;
            }
            .feature-image-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .cta-banner p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 20px;
            }
            .guide-hero h1 {
                font-size: 22px;
            }
            .guide-hero .guide-subtitle {
                font-size: 14px;
            }
            .data-banner {
                grid-template-columns: 1fr 1fr;
                padding: 16px;
            }
            .data-item .data-num {
                font-size: 20px;
            }
            .btn-lg {
                font-size: 14px;
                padding: 10px 20px;
            }
            .guide-card .guide-body {
                padding: 16px 18px 18px;
            }
            .guide-card .guide-title {
                font-size: 15px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

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

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

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-blue-light {
            background-color: var(--color-bg-blue);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
        }

        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

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

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

        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-accent:hover {
            background-color: #D97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

        /* header / nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 6px rgba(15, 23, 42, 0.04);
        }

        .site-nav {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 18px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 18px;
            color: var(--color-text-main);
            flex-shrink: 0;
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            display: inline-block;
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

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

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

        .btn-sm {
            font-size: 13px;
            padding: 7px 16px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-fast);
        }

        .hamburger:hover {
            background-color: var(--color-primary-light);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text-main);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 20px 20px;
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-card-shadow-md);
        }

        .mobile-menu a {
            display: block;
            padding: 10px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }

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

        /* hero / category H1 */
        .hero-category {
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
        }

        .hero-category-inner {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .hero-category-text {
            flex: 1;
            min-width: 280px;
            max-width: 700px;
        }

        .hero-category-text h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .hero-category-text p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .hero-category-badge {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .badge-item {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
        }

        .hero-category-side {
            flex-shrink: 0;
            width: 280px;
        }

        .hero-category-side .card {
            padding: 20px;
        }

        .hero-category-side .card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 12px;
        }

        .hero-category-side .card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
            line-height: 1.6;
        }

        /* KPI cards */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 24px;
        }

        .kpi-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-normal);
        }

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

        .kpi-card .kpi-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .kpi-card .kpi-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .kpi-card .kpi-note {
            font-size: 11px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* data cards */
        .data-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .data-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .data-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .data-card-image {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background-color: var(--color-bg-alt);
        }

        .data-card-body {
            padding: 20px;
        }

        .data-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        .data-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--color-accent-green);
            background-color: #ECFDF5;
            border: 1px solid #D1FAE5;
            border-radius: 4px;
            padding: 2px 8px;
            margin-bottom: 8px;
        }

        .data-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }

        .data-link:hover {
            color: var(--color-primary-darker);
            text-decoration: underline;
        }

        /* table */
        .data-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-card-border);
            box-shadow: var(--color-card-shadow-sm);
            background-color: #fff;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 660px;
        }

        .data-table thead th {
            background-color: var(--color-bg-alt);
            color: var(--color-text-main);
            font-weight: 600;
            font-size: 13px;
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }

        .data-table tbody td {
            padding: 12px 16px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }

        .data-table tbody tr:nth-child(even) {
            background-color: var(--color-bg-alt);
        }

        .data-table tbody tr:hover {
            background-color: var(--color-primary-light);
        }

        .highlight-num {
            font-weight: 700;
            color: var(--color-primary);
        }

        .trend-up {
            color: var(--color-accent-green);
            font-weight: 600;
        }

        .trend-down {
            color: #EF4444;
            font-weight: 600;
        }

        /* image-text */
        .image-text-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .image-text-grid .image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-md);
            background-color: var(--color-bg-alt);
        }

        .image-text-grid .image-wrap img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .image-text-grid h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .image-text-grid p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .image-text-grid ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }

        .image-text-grid ul li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .image-text-grid ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 9px;
            width: 8px;
            height: 8px;
            background-color: var(--color-primary);
            border-radius: 50%;
            opacity: 0.7;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: var(--color-primary-border);
            box-shadow: var(--color-card-shadow-md);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            text-align: left;
            background-color: transparent;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition-fast);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition-fast);
        }

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            display: none;
        }

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

        /* CTA section */
        .cta-banner {
            background-color: var(--color-primary);
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-banner h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .cta-banner p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 500px;
            line-height: 1.7;
        }

        .cta-banner .btn-white {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid #fff;
            font-weight: 600;
        }

        .cta-banner .btn-white:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary-light);
            color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
        }

        /* form */
        .form-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-card-shadow-lg);
            padding: 28px;
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 6px;
        }

        .form-group input {
            width: 100%;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-text-main);
            background-color: #fff;
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }

        .form-group input::placeholder {
            color: var(--color-text-muted);
        }

        /* footer */
        footer {
            background-color: #0F172A;
            color: #CBD5E1;
            margin-top: 40px;
        }

        .footer-top {
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: #94A3B8;
            max-width: 320px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

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

        .footer-links a {
            font-size: 13px;
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.2);
            padding: 16px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #64748B;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

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

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

            .image-text-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                height: 56px;
                padding: 0 14px;
            }

            .nav-menu {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-menu.open {
                display: flex;
            }

            .hero-category-inner {
                flex-direction: column;
            }

            .hero-category-side {
                width: 100%;
            }

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

            .section {
                padding: 48px 0;
            }

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

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

            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .kpi-card .kpi-number {
                font-size: 26px;
            }

            .cta-banner {
                padding: 28px 20px;
                flex-direction: column;
                text-align: center;
            }

            .cta-banner p {
                max-width: 100%;
            }

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

            .footer-top {
                padding: 32px 0 20px;
            }
        }

        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr;
            }

            .data-card-image {
                height: 130px;
            }

            .hero-category {
                padding: 32px 0 28px;
            }

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

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

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

            .btn {
                font-size: 13px;
                padding: 9px 18px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        * {
            box-sizing: border-box;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote {
            margin: 0;
            padding: 0;
        }
        ul, ol {
            list-style: none;
        }
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--color-bg-alt);
        }
        .section-blue-light {
            background-color: var(--color-bg-blue);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-secondary {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }
        .btn-accent:hover {
            background-color: #D97706;
            border-color: #D97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
            border-radius: 10px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }
        .site-nav {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--color-text-main);
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .nav-menu li a:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .nav-menu li a.active {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            background: #fff;
            cursor: pointer;
            padding: 0;
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-text-main);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-border);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 20px 20px;
            gap: 4px;
            background: #fff;
            border-top: 1px solid var(--color-border);
            box-shadow: var(--color-card-shadow-md);
        }
        .mobile-menu a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            transition: all var(--transition-fast);
        }
        .mobile-menu a:hover {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
        }
        .mobile-menu a.active {
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-menu.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-border);
        }
        .breadcrumb .current {
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* Hero Section */
        .hero-section {
            padding: 60px 0 48px;
            background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
            border-bottom: 1px solid var(--color-border);
        }
        .hero-content {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1;
            min-width: 280px;
        }
        .hero-text h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
        }
        .hero-text .hero-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-badge {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .hero-badge span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: #fff;
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 5px 14px;
        }
        .hero-badge span i {
            color: var(--color-accent-green);
            font-size: 12px;
        }
        .hero-illustration {
            flex: 0 0 340px;
            max-width: 340px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-lg);
            border: 1px solid var(--color-border);
        }
        .hero-illustration img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Play type cards */
        .play-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .play-card {
            background: #fff;
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: all var(--transition-normal);
            box-shadow: var(--color-card-shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .play-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-primary-border);
        }
        .play-card .play-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-border);
        }
        .play-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .play-card p {
            font-size: 13.5px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .play-card .play-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-radius: 4px;
            padding: 2px 8px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        /* Rule entries */
        .rule-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 8px;
        }
        .rule-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }
        .rule-item:hover {
            box-shadow: var(--color-card-shadow-md);
            border-color: var(--color-primary-border);
        }
        .rule-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        .rule-content {
            flex: 1;
        }
        .rule-content h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .rule-content p {
            font-size: 13.5px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }
        .rule-content .rule-note {
            display: inline-block;
            font-size: 12px;
            color: var(--color-text-muted);
            background: var(--color-bg-alt);
            border-radius: 4px;
            padding: 3px 10px;
            margin-top: 8px;
        }

        /* Comparison table */
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--color-card-shadow-sm);
            background: #fff;
        }
        .comparison-table {
            width: 100%;
            min-width: 720px;
            border-collapse: collapse;
            font-size: 13.5px;
        }
        .comparison-table thead th {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 13px;
            text-align: left;
            padding: 14px 16px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .comparison-table tbody td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            line-height: 1.6;
            vertical-align: top;
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tbody tr:nth-child(even) td {
            background: var(--color-bg-alt);
        }
        .comparison-table tbody tr:hover td {
            background: var(--color-primary-light);
        }
        .comparison-table .table-label {
            font-weight: 600;
            color: var(--color-text-main);
            white-space: nowrap;
        }

        /* Image text section */
        .image-text-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .image-text-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-lg);
            border: 1px solid var(--color-border);
        }
        .image-text-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .image-text-content h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.45;
            margin-bottom: 14px;
        }
        .image-text-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .image-text-content .highlight-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .image-text-content .highlight-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13.5px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .image-text-content .highlight-list li i {
            color: var(--color-accent-green);
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* Warning / tips */
        .warning-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .warning-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-left: 3px solid var(--color-accent);
            border-radius: var(--radius-sm);
            padding: 20px 18px;
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }
        .warning-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
        }
        .warning-card h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.4;
        }
        .warning-card h3 i {
            color: var(--color-accent);
            font-size: 15px;
        }
        .warning-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* Data snapshot */
        .data-snapshot-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 8px;
        }
        .snapshot-item {
            text-align: center;
            padding: 20px 16px;
            background: #fff;
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }
        .snapshot-item:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
        }
        .snapshot-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }
        .snapshot-label {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-darker) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }
        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-primary {
            background-color: #fff;
            color: var(--color-primary);
            border-color: #fff;
        }
        .cta-section .btn-primary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary-light);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* Footer */
        footer {
            background-color: var(--color-text-main);
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0;
        }
        .footer-top {
            padding: 48px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 32px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.75;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .footer-links li a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-illustration {
                flex: 0 0 280px;
                max-width: 280px;
            }
            .play-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .warning-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .image-text-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                height: 56px;
                padding: 0 16px;
            }
            .nav-menu {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .section {
                padding: 48px 0;
            }
            .hero-section {
                padding: 40px 0 32px;
            }
            .hero-text h1 {
                font-size: 24px;
            }
            .hero-content {
                flex-direction: column;
                gap: 24px;
            }
            .hero-illustration {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }
            .play-grid {
                grid-template-columns: 1fr;
            }
            .warning-grid {
                grid-template-columns: 1fr;
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .rule-item {
                flex-direction: column;
                gap: 10px;
            }
            .cta-section {
                padding: 36px 20px;
            }
            .section-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero-text h1 {
                font-size: 21px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .play-card {
                padding: 18px 16px;
            }
            .rule-item {
                padding: 16px 14px;
            }
            .data-snapshot-grid {
                grid-template-columns: 1fr;
            }
            .snapshot-number {
                font-size: 26px;
            }
            .cta-section h2 {
                font-size: 20px;
            }
            .section {
                padding: 36px 0;
            }
        }

        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #2563EB;
            --color-primary-dark: #1D4ED8;
            --color-primary-darker: #1E40AF;
            --color-primary-light: #EFF6FF;
            --color-primary-border: #DBEAFE;
            --color-accent: #F59E0B;
            --color-accent-green: #10B981;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F8FAFC;
            --color-bg-blue: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-secondary: #475569;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-card-border: #E2E8F0;
            --color-card-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --color-card-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
            --color-card-shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-section: 72px;
            --spacing-card: 28px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --max-width: 1200px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-main);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

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

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

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-blue-light {
            background-color: var(--color-bg-blue);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
        }

        .card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

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

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

        .btn-primary:hover {
            background-color: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-secondary:hover {
            background-color: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-sm);
        }

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

        .btn-accent:hover {
            background-color: #D97706;
            border-color: #D97706;
            transform: translateY(-1px);
            box-shadow: var(--color-card-shadow-md);
            color: #fff;
        }

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

        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.05);
        }

        .site-nav {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            flex-shrink: 0;
        }

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

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 4px;
            position: relative;
            transition: color var(--transition-fast);
        }

        .nav-menu li a:hover {
            color: var(--color-primary);
        }

        .nav-menu li a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 1px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            padding: 8px;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 0;
            padding: 8px 20px 16px;
            background-color: #fff;
            border-top: 1px solid var(--color-border);
        }

        .mobile-menu a {
            display: block;
            padding: 12px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-menu.open {
            display: flex;
        }

        .strategy-hero {
            background-color: var(--color-primary-light);
            position: relative;
            overflow: hidden;
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
            padding: 64px 0 100px;
            margin-bottom: -40px;
            z-index: 1;
        }

        .strategy-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0.02) 100%);
            z-index: 0;
            pointer-events: none;
        }

        .strategy-hero-content {
            position: relative;
            z-index: 1;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .strategy-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .strategy-hero p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 640px;
            margin-bottom: 28px;
        }

        .strategy-list-section {
            padding-top: 60px;
            padding-bottom: var(--spacing-section);
        }

        .strategy-card {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 24px;
            padding: 0;
            overflow: hidden;
            border-radius: var(--radius-md);
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }

        .strategy-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

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

        .strategy-card-body {
            padding: 24px 24px 24px 8px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .strategy-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            border: 1px solid var(--color-primary-border);
            border-radius: 20px;
            padding: 3px 12px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

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

        .strategy-card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
        }

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

        .stats-section {
            background-color: var(--color-bg-alt);
        }

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

        .stat-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--color-card-shadow-sm);
            text-align: center;
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .about-section {
            background-color: var(--color-bg);
        }

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

        .about-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .about-text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-md);
            border: 1px solid var(--color-card-border);
        }

        .about-image img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
        }

        .hot-section {
            background-color: var(--color-bg-alt);
        }

        .hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .hot-card {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }

        .hot-card:hover {
            box-shadow: var(--color-card-shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-border);
        }

        .hot-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }

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

        .hot-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .hot-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .faq-section {
            background-color: var(--color-bg);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--color-bg);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--color-card-shadow-sm);
            transition: all var(--transition-normal);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            text-align: left;
            background: none;
            border: none;
        }

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

        .faq-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 16px;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 20px;
        }

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

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

        .cta-section {
            background-color: var(--color-primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin: 0;
        }

        .cta-btn {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid #fff;
            font-size: 15px;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .cta-btn:hover {
            background-color: var(--color-primary-light);
            color: var(--color-primary-darker);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .footer {
            background-color: #0F172A;
            color: #CBD5E1;
        }

        .footer-top {
            padding: 48px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.8;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

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

        .footer-links a {
            font-size: 13px;
            color: #94A3B8;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #64748B;
            margin: 0;
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .strategy-card {
                grid-template-columns: 220px 1fr;
            }

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

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

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

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

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

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

            .site-nav {
                height: 56px;
            }

            .nav-menu {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .nav-cta .btn-primary {
                display: none;
            }

            .strategy-hero {
                padding: 40px 0 80px;
                clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
                margin-bottom: -24px;
            }

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

            .strategy-hero p {
                font-size: 15px;
            }

            .strategy-list-section {
                padding-top: 40px;
            }

            .strategy-card {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .strategy-card-img {
                min-height: 200px;
                height: 200px;
            }

            .strategy-card-body {
                padding: 20px 20px 24px;
            }

            .strategy-card-title {
                font-size: 17px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .stat-card {
                padding: 20px 16px;
            }

            .stat-number {
                font-size: 26px;
            }

            .hot-grid {
                grid-template-columns: 1fr;
            }

            .cta-content {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

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

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

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

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

            .strategy-hero {
                padding: 36px 0 64px;
                clip-path: polygon(0 0, 100% 0, 100% 94%, 0 100%);
                margin-bottom: -16px;
            }

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

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

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

            .footer-top {
                padding: 36px 0 24px;
            }
        }