/* roulang page: index */
:root {
            --primary: #1a2a4a;
            --primary-light: #2a3f6a;
            --primary-dark: #0f1a30;
            --accent: #d4a843;
            --accent-hover: #c49a35;
            --accent-light: #f0e6cc;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-deep: #0d1420;
            --bg-deep-2: #131e30;
            --text-main: #1e2330;
            --text-body: #4a5161;
            --text-light: #7a8294;
            --text-white: #ffffff;
            --text-code: #aeb6c8;
            --border: #e4e8f0;
            --border-deep: #2a3a52;
            --shadow-sm: 0 2px 12px rgba(17, 24, 39, 0.06);
            --shadow-md: 0 8px 30px rgba(17, 24, 39, 0.08);
            --shadow-lg: 0 20px 50px rgba(17, 24, 39, 0.12);
            --shadow-accent: 0 8px 30px rgba(212, 168, 67, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-pill: 50px;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img{
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button{
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Top Header */
        .top-header {
            background: var(--primary-dark);
            color: var(--text-code);
            font-size: 13px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-header .container{
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }
        .top-header-left, .top-header-right{
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .top-header i{
            margin-right: 6px;
            color: var(--accent);
            font-size: 12px;
        }
        .top-header .split{
            opacity: 0.3;
        }

        /* Main Header */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-deep);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 30px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), #f0c966);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--primary-dark);
            font-size: 18px;
            box-shadow: 0 0 20px rgba(212, 168, 67, 0.3);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--accent);
        }
        .brand-sub {
            font-size: 10px;
            color: var(--text-code);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }

        /* Nav */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            color: var(--text-code);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 18px;
            border-radius: var(--radius-pill);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--accent);
            background: rgba(212, 168, 67, 0.12);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .btn-login {
            background: linear-gradient(135deg, var(--accent), #e0b84f);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(212, 168, 67, 0.4);
            color: var(--primary-dark);
        }
        .btn-login-mobile{
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            font-size: 20px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-menu-toggle:hover{
            background: rgba(255, 255, 255, 0.1);
        }

        /* Mobile Bottom Nav */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2000;
            background: rgba(13, 20, 32, 0.96);
            backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
            padding-bottom: env(safe-area-inset-bottom);
        }
        .mobile-bottom-nav .m-nav-inner{
            display: flex;
            justify-content: space-around;
            align-items: center;
            height: 60px;
        }
        .mobile-bottom-nav a{
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            color: var(--text-code);
            font-size: 10px;
            flex: 1;
            transition: var(--transition);
        }
        .mobile-bottom-nav a i{
            font-size: 18px;
            transition: var(--transition);
        }
        .mobile-bottom-nav a:hover,
        .mobile-bottom-nav a.active{
            color: var(--accent);
        }
        .mobile-bottom-nav a.active i{
            transform: scale(1.1);
        }
        .mobile-bottom-nav a.red-dot{
            position: relative;
        }
        .mobile-bottom-nav a.red-dot::after{
            content: '';
            position: absolute;
            top: 4px;
            right: 18px;
            width: 6px;
            height: 6px;
            background: #e74c3c;
            border-radius: 50%;
            border: 1px solid var(--primary-dark);
        }

        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-deep-2) 100%);
            padding: 120px 0 100px;
            overflow: hidden;
            color: var(--text-white);
        }
        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(105deg, rgba(13,20,32,0.92) 40%, rgba(13,20,32,0.65) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 168, 67, 0.15);
            border: 1px solid rgba(212, 168, 67, 0.3);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 14px;
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }
        .hero h1 span {
            color: var(--accent);
            position: relative;
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: var(--text-code);
            margin-bottom: 36px;
            max-width: 540px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), #e8bc54);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 16px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(212, 168, 67, 0.45);
            color: var(--primary-dark);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
            font-weight: 600;
            font-size: 16px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.4);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-white);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .stat-num span{
            color: var(--accent);
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-code);
            margin-top: 4px;
            display: block;
        }

        /* Hero Card */
        .hero-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
            position: relative;
        }
        .hero-card::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            border-radius: 2px;
        }
        .hero-card .card-top{
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .hero-card .platform-status{
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(46, 204, 113, 0.15);
            color: #2ecc71;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
        }
        .hero-card .platform-status .dot{
            width: 6px;
            height: 6px;
            background: #2ecc71;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse{
            0%, 100% {opacity: 1;}
            50% {opacity: 0.4;}
        }
        .hero-card .card-badge{
            font-size: 12px;
            color: var(--text-code);
            background: rgba(255,255,255,0.08);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }
        .hero-card .platform-logos{
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .platform-logo-item{
            flex: 1;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            padding: 14px 10px;
            text-align: center;
            transition: var(--transition);
        }
        .platform-logo-item:hover{
            background: rgba(255,255,255,0.1);
            border-color: rgba(212,168,67,0.4);
            transform: translateY(-2px);
        }
        .platform-logo-item i{
            font-size: 24px;
            color: var(--accent);
            display: block;
            margin-bottom: 8px;
        }
        .platform-logo-item span{
            font-size: 13px;
            color: var(--text-white);
            font-weight: 600;
            display: block;
        }
        .hero-card .card-points{
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: grid;
            gap: 12px;
        }
        .hero-card .card-point{
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-code);
            font-size: 14px;
        }
        .hero-card .card-point i{
            color: var(--accent);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }
        .hero-card .card-btn{
            display: block;
            margin-top: 22px;
            text-align: center;
            background: linear-gradient(135deg, var(--accent), #e0b84f);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 20px;
            border-radius: var(--radius-pill);
            transition: var(--transition);
        }
        .hero-card .card-btn:hover{
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
            color: var(--primary-dark);
        }

        /* Section Spacing */
        .section {
            padding: 100px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before{
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover{
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(212, 168, 67, 0.3);
        }
        .feature-card:hover::before{
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.05));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 22px;
            color: var(--accent);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-card .feature-link {
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feature-card .feature-link i{
            transition: var(--transition);
            font-size: 12px;
        }
        .feature-card .feature-link:hover i{
            transform: translateX(4px);
        }

        /* Dark Section */
        .dark-section {
            background: var(--bg-deep);
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .dark-section .section-header h2 {
            color: var(--text-white);
        }
        .dark-section .section-header p {
            color: var(--text-code);
        }
        .dark-section .section-tag{
            color: var(--accent);
        }

        /* Working Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before{
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 1px;
            background: linear-gradient(90deg, rgba(212,168,67,0.2), rgba(212,168,67,0.5), rgba(212,168,67,0.2));
        }
        .step-item {
            text-align: center;
            padding: 20px;
            position: relative;
            z-index: 1;
        }
        .step-num {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            background: var(--bg-deep-2);
            border: 1px solid rgba(212, 168, 67, 0.3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            box-shadow: 0 0 30px rgba(212,168,67,0.15);
        }
        .step-item h3 {
            font-size: 18px;
            color: var(--text-white);
            margin-bottom: 10px;
            font-weight: 700;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-code);
            line-height: 1.6;
        }

        /* Data Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .metric-card {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
        }
        .metric-card:hover{
            background: rgba(255,255,255,0.08);
            transform: translateY(-4px);
        }
        .metric-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metric-label {
            font-size: 15px;
            color: var(--text-white);
            font-weight: 600;
        }
        .metric-desc {
            font-size: 13px;
            color: var(--text-code);
            margin-top: 6px;
        }

        /* Content List Section */
        .content-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .content-card-list {
            display: grid;
            gap: 20px;
        }
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover{
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(212,168,67,0.3);
        }
        .content-card-inner{
            padding: 24px;
            display: flex;
            gap: 20px;
            flex: 1;
        }
        .content-card-img{
            width: 160px;
            height: 110px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .content-card-body{
            flex: 1;
        }
        .content-card-meta{
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 13px;
        }
        .content-card-meta .cat-tag{
            background: rgba(212,168,67,0.12);
            color: #b8902e;
            padding: 2px 12px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 12px;
        }
        .content-card-meta .date{
            color: var(--text-light);
            font-size: 12px;
        }
        .content-card h3{
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-main);
        }
        .content-card h3 a:hover{
            color: var(--accent);
        }
        .content-card-body p{
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .content-card .read-more{
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .content-card .read-more i{
            font-size: 11px;
            transition: var(--transition);
        }
        .content-card .read-more:hover i{
            transform: translateX(4px);
        }

        /* Sidebar */
        .sidebar{
            display: grid;
            gap: 24px;
        }
        .sidebar-card{
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3{
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
            position: relative;
            color: var(--text-main);
        }
        .sidebar-card h3::after{
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .sidebar-link-list{
            display: grid;
            gap: 4px;
        }
        .sidebar-link-list a{
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-size: 14px;
            transition: var(--transition);
        }
        .sidebar-link-list a i{
            color: var(--accent);
            font-size: 12px;
            width: 16px;
            text-align: center;
        }
        .sidebar-link-list a:hover{
            background: var(--bg);
            color: var(--accent);
            padding-left: 16px;
        }
        .sidebar-light-note{
            background: linear-gradient(135deg, rgba(212,168,67,0.08), rgba(212,168,67,0.02));
            border: 1px solid rgba(212,168,67,0.2);
            border-radius: var(--radius-md);
            padding: 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .sidebar-light-note strong{
            color: var(--text-main);
        }
        .sidebar-light-note .btn-primary{
            width: 100%;
            margin-top: 14px;
            justify-content: center;
        }

        /* Category Cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .category-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover{
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(212,168,67,0.4);
        }
        .category-card .card-cover{
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-cover img{
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-cover img{
            transform: scale(1.05);
        }
        .category-card .card-cover::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60%;
            background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
        }
        .category-card .card-body{
            padding: 24px;
        }
        .category-card .card-tag{
            display: inline-block;
            background: rgba(212,168,67,0.15);
            color: #b8902e;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }
        .category-card h3{
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .category-card h3 a:hover{
            color: var(--accent);
        }
        .category-card p{
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .category-card .btn-more{
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .btn-more i{
            transition: var(--transition);
            font-size: 12px;
        }
        .category-card .btn-more:hover i{
            transform: translateX(4px);
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
        }
        .faq-layout {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover{
            border-color: rgba(212,168,67,0.4);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary{
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            cursor: pointer;
        }
        .faq-item summary::-webkit-details-marker{
            display: none;
        }
        .faq-item summary .faq-icon{
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212,168,67,0.15);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-item[open] summary .faq-icon{
            transform: rotate(45deg);
        }
        .faq-item .faq-answer{
            padding-top: 16px;
            margin-top: 16px;
            border-top: 1px solid var(--border);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--bg-deep));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before{
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(212,168,67,0.1), transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container{
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
        }
        .cta-section h2{
            font-size: 38px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .cta-section p{
            font-size: 17px;
            color: var(--text-code);
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .cta-btns{
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-note{
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-code);
            opacity: 0.7;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-code);
            padding: 60px 0 30px;
        }
        .footer-grid{
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .brand{
            margin-bottom: 16px;
        }
        .footer-brand p{
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.7;
            margin-bottom: 20px;
        }
        .footer-col h4{
            color: var(--text-white);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul{
            display: grid;
            gap: 10px;
        }
        .footer-col a{
            font-size: 14px;
            opacity: 0.7;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col a:hover{
            opacity: 1;
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col a i{
            font-size: 10px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }
        .footer-bottom p{
            opacity: 0.6;
        }
        .footer-bottom-links{
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a{
            opacity: 0.6;
            font-size: 13px;
        }
        .footer-bottom-links a:hover{
            opacity: 1;
            color: var(--accent);
        }
        .footer-disclaimer{
            margin-top: 20px;
            padding: 20px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-sm);
            font-size: 12px;
            line-height: 1.8;
            opacity: 0.5;
            border: 1px solid rgba(255,255,255,0.06);
        }

        /* Empty state */
        .empty-state{
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            color: var(--text-light);
            font-size: 15px;
        }

        /* Back to top */
        .back-to-top{
            position: fixed;
            bottom: 80px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(13,20,32,0.8);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            z-index: 900;
            border: 1px solid rgba(212,168,67,0.3);
            transition: var(--transition);
            backdrop-filter: blur(10px);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
        }
        .back-to-top.show{
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover{
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content{
                max-width: 100%;
            }
            .hero-card{
                max-width: 640px;
            }
            .steps-grid{
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .steps-grid::before{
                display: none;
            }
            .metrics-grid{
                grid-template-columns: repeat(2, 1fr);
            }
            .content-layout{
                grid-template-columns: 1fr;
            }
            .sidebar{
                display: grid;
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid{
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid{
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container{
                padding: 0 20px;
            }
            .top-header{
                display: none;
            }
            .main-header{
                position: sticky;
            }
            .header-inner{
                height: 64px;
            }
            .main-nav{
                display: none;
            }
            .mobile-menu-toggle{
                display: flex;
            }
            .header-actions .btn-login{
                display: none;
            }
            .btn-login-mobile{
                display: block;
            }
            .hero{
                padding: 80px 0 70px;
            }
            .hero h1{
                font-size: 36px;
            }
            .hero-desc{
                font-size: 16px;
            }
            .hero-stats{
                gap: 24px;
                flex-wrap: wrap;
            }
            .feature-grid{
                grid-template-columns: repeat(2, 1fr);
            }
            .section{
                padding: 70px 0;
            }
            .section-header h2{
                font-size: 30px;
            }
            .mobile-bottom-nav{
                display: block;
            }
            .content-card-inner{
                flex-direction: column;
            }
            .content-card-img{
                width: 100%;
                height: 160px;
            }
            .sidebar{
                grid-template-columns: 1fr;
            }
            .category-grid{
                grid-template-columns: 1fr;
            }
            .footer-grid{
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom{
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2{
                font-size: 30px;
            }
            /* Bottom padding for mobile to account for bottom nav */
            body{
                padding-bottom: 60px;
            }
            .back-to-top{
                bottom: 84px;
            }
        }

        @media (max-width: 520px) {
            .container{
                padding: 0 16px;
            }
            .brand-text{
                font-size: 17px;
            }
            .hero h1{
                font-size: 30px;
            }
            .hero-btns{
                flex-direction: column;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-ghost{
                justify-content: center;
            }
            .hero-stats{
                flex-direction: column;
                gap: 16px;
            }
            .feature-grid{
                grid-template-columns: 1fr;
            }
            .steps-grid{
                grid-template-columns: 1fr;
            }
            .metrics-grid{
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metric-card{
                padding: 24px 16px;
            }
            .metric-num{
                font-size: 30px;
            }
            .category-card .card-cover{
                height: 160px;
            }
            .faq-item{
                padding: 18px 20px;
            }
            .faq-item summary{
                font-size: 15px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0a1626;
            --primary-light: #14243d;
            --accent: #d4af37;
            --accent-dark: #b8942e;
            --accent-light: #f0d77b;
            --bg: #f4f6fa;
            --bg-deep: #eef1f6;
            --card-bg: #ffffff;
            --text: #1c2430;
            --text-light: #5a6b7f;
            --text-lighter: #8a98a9;
            --border: #e2e7ee;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(10, 22, 38, 0.06);
            --shadow-md: 0 6px 20px rgba(10, 22, 38, 0.08);
            --shadow-lg: 0 12px 40px rgba(10, 22, 38, 0.12);
            --transition: all 0.25s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--accent);
            color: #0a1626;
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(212, 175, 55, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(10, 22, 38, 0.25);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 22, 38, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), #f5dc8c);
            color: var(--primary);
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
        }
        .brand-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--accent);
            font-weight: 600;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, #0a1626 0%, #14243d 55%, #1d3050 100%);
            padding: 90px 0 70px;
            overflow: hidden;
        }
        .article-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 65%);
            pointer-events: none;
        }
        .article-hero::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 175, 55, 0.15);
            border: 1px solid rgba(212, 175, 55, 0.35);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
        }
        .hero-category i {
            font-size: 12px;
        }
        .article-hero h1 {
            color: #fff;
            font-size: 38px;
            line-height: 1.35;
            font-weight: 800;
            max-width: 800px;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .hero-meta i {
            color: var(--accent);
            font-size: 13px;
        }

        /* ===== Article Content ===== */
        .article-main {
            position: relative;
            z-index: 3;
            margin-top: -30px;
        }
        .article-content-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 50px;
            margin-bottom: 40px;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.95;
            color: var(--text);
        }
        .article-body>p {
            margin-bottom: 20px;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-left: 18px;
            border-left: 4px solid var(--accent);
            color: var(--primary);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 28px 0 12px;
            color: var(--primary);
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 20px 0 10px;
            color: var(--text);
        }
        .article-body ul {
            margin: 16px 0 24px;
            padding-left: 4px;
        }
        .article-body ul li {
            position: relative;
            padding-left: 22px;
            margin-bottom: 10px;
        }
        .article-body ul li::before {
            content: "\f0da";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent);
            font-size: 14px;
        }
        .article-body ol {
            margin: 16px 0 24px;
            padding-left: 28px;
            counter-reset: custom-counter;
        }
        .article-body ol li {
            position: relative;
            padding-left: 4px;
            margin-bottom: 10px;
            counter-increment: custom-counter;
        }
        .article-body ol li::marker {
            color: var(--accent);
            font-weight: 700;
        }
        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            margin: 24px 0;
            width: auto;
            max-width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: linear-gradient(135deg, #fdf9ef, #faf6e8);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: #5a4a1c;
            font-size: 15px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            font-size: 14px;
        }
        .article-body table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            background: #fff;
        }
        .article-body table tr:last-child td {
            border-bottom: none;
        }
        .article-body a {
            color: #b8942e;
            font-weight: 600;
            border-bottom: 1px solid rgba(184, 148, 46, 0.3);
            transition: var(--transition);
        }
        .article-body a:hover {
            color: var(--accent-dark);
            border-bottom-color: var(--accent-dark);
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #f8fafc, #f0f4fa);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            margin: 24px 0;
        }

        /* ===== Article Tags ===== */
        .article-tags {
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .article-tags span {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 600;
        }
        .tag-item {
            display: inline-block;
            padding: 5px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag-item:hover {
            color: var(--accent-dark);
            border-color: var(--accent);
            background: #fdf9ef;
        }

        /* ===== Not Found ===== */
        .not-found-section {
            padding: 100px 0;
            text-align: center;
        }
        .not-found-box {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 60px;
            box-shadow: var(--shadow-md);
            max-width: 640px;
            margin: 0 auto;
        }
        .not-found-box .icon {
            font-size: 48px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found-box h1 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 30px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 70px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 32px;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto;
        }
        .section-kicker {
            display: inline-block;
            background: rgba(212, 175, 55, 0.12);
            color: #a8842e;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== Cards ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .info-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .info-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .info-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .info-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .info-card:hover .card-img img {
            transform: scale(1.04);
        }
        .info-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(10, 22, 38, 0.8);
            backdrop-filter: blur(8px);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            border: 1px solid rgba(212, 175, 55, 0.3);
        }
        .info-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .info-card .card-body h3 {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .info-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 16px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .card-link:hover {
            gap: 10px;
            color: var(--primary);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0a1626, #1d3050);
            position: relative;
            overflow: hidden;
            margin: 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.15), transparent 70%);
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-box h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            margin-bottom: 32px;
        }
        .cta-box .btn {
            margin: 0 8px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
            padding: 70px 0;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 175, 55, 0.4);
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 16px;
        }
        .faq-q i {
            color: var(--accent);
            transition: var(--transition);
        }
        .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-a {
            max-height: 320px;
            padding: 0 24px 20px;
        }

        /* ===== Mobile Tabbar ===== */
        .mobile-tabbar {
            display: none;
        }

        /* ===== Article Extra ===== */
        .aside-info {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 36px;
        }
        .aside-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: var(--transition);
        }
        .aside-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .aside-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(212, 175, 55, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent-dark);
            font-size: 20px;
        }
        .aside-card h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .aside-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a1420;
            padding: 70px 0 30px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 44px;
            margin-bottom: 48px;
        }
        .footer-brand .brand {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 11px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }
        .footer-disclaimer {
            margin-top: 28px;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            line-height: 1.7;
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .article-content-wrap {
                padding: 40px;
            }
            .article-hero h1 {
                font-size: 32px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            .header-inner {
                height: 60px;
            }
            .main-nav {
                display: none;
            }
            .article-hero {
                padding: 70px 0 60px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .hero-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-main {
                margin-top: -20px;
            }
            .article-content-wrap {
                padding: 28px 20px;
                border-radius: 14px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 17px;
            }
            .aside-info {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .cta-box .btn {
                display: flex;
                width: 100%;
                margin: 8px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .mobile-tabbar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 999;
                background: rgba(10, 22, 38, 0.97);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
                justify-content: space-around;
            }
            .tab-item {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 3px;
                padding: 6px 10px;
                border-radius: 10px;
                color: rgba(255, 255, 255, 0.5);
                font-size: 11px;
                transition: var(--transition);
                min-width: 64px;
            }
            .tab-item i {
                font-size: 17px;
            }
            .tab-item:hover,
            .tab-item.active {
                color: var(--accent);
                background: rgba(212, 175, 55, 0.1);
            }
            body {
                padding-bottom: 64px;
            }
            .not-found-box {
                padding: 36px 24px;
            }
            .faq-q {
                font-size: 15px;
                padding: 15px 18px;
            }
            .faq-a {
                padding: 0 18px;
            }
            .faq-item.open .faq-a {
                padding: 0 18px 16px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }
            .article-hero h1 {
                font-size: 23px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section {
                padding: 50px 0;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-box h2 {
                font-size: 23px;
            }
        }

/* roulang page: category1 */
:root {
    --bg-body:#f5f7fb;
    --bg-white:#ffffff;
    --bg-card:#ffffff;
    --bg-dark:#0a1128;
    --bg-dark-2:#111c3a;
    --primary:#1a2a5e;
    --primary-light:#2b45a4;
    --primary-soft:#e6ecfa;
    --accent:#d4af37;
    --accent-light:#f0d98c;
    --accent-dark:#b8912f;
    --success:#23b26c;
    --text-main:#14213d;
    --text-sub:#5b6b83;
    --text-light:#8c99ad;
    --border:#e3e8f0;
    --radius:14px;
    --radius-lg:22px;
    --radius-sm:8px;
    --shadow-sm:0 2px 10px rgba(20,33,61,.06);
    --shadow:0 10px 35px rgba(20,33,61,.10);
    --shadow-lg:0 24px 60px rgba(10,17,40,.16);
    --transition:.3s cubic-bezier(.4,0,.2,1);
    --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg-body);color:var(--text-main);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input,select{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.28rem;color:var(--primary);letter-spacing:.5px}
.brand-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary-light),var(--primary));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:900;box-shadow:0 4px 14px rgba(42,69,164,.35)}
.brand-text{white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 30px;border-radius:50px;font-weight:600;font-size:.95rem;line-height:1;cursor:pointer;border:2px solid transparent;transition:var(--transition);letter-spacing:.3px}
.btn-primary{background:linear-gradient(135deg,var(--primary-light),var(--primary));color:#fff;box-shadow:0 6px 20px rgba(26,42,94,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(26,42,94,.35)}
.btn-accent{background:linear-gradient(135deg,var(--accent-light),var(--accent));color:#2a1f05;box-shadow:0 6px 20px rgba(212,175,55,.3)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(212,175,55,.4)}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 6px 20px rgba(10,17,40,.12)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(10,17,40,.18)}
.btn-block{width:100%}
.section-tag{display:inline-flex;align-items:center;gap:6px;background:var(--primary-soft);color:var(--primary);padding:5px 16px;border-radius:30px;font-size:.8rem;font-weight:600;letter-spacing:.5px}
.section-title{font-size:2.1rem;font-weight:800;line-height:1.25;color:var(--text-main);margin:16px 0 12px}
.section-desc{font-size:1rem;color:var(--text-sub);max-width:680px;line-height:1.8}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.section-head .section-tag{margin-bottom:4px}
section{padding:88px 0}
.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav a{padding:8px 18px;border-radius:30px;font-size:.92rem;font-weight:500;color:var(--text-sub);position:relative;transition:var(--transition)}
.main-nav a:hover{color:var(--primary);background:var(--primary-soft)}
.main-nav a.active{color:var(--primary);background:var(--primary-soft);font-weight:700}
.header-cta{padding:9px 22px;border-radius:30px;background:linear-gradient(135deg,var(--accent-light),var(--accent));color:#2a1f05;font-size:.86rem;font-weight:700;box-shadow:0 4px 14px rgba(212,175,55,.25)}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(212,175,55,.35)}
.hero{position:relative;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:120px 0 96px;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(6,12,30,.92) 0%,rgba(10,17,40,.82) 48%,rgba(26,42,94,.45) 100%)}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 80% 20%,rgba(212,175,55,.12),transparent 50%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(212,175,55,.14);border:1px solid rgba(212,175,55,.35);color:var(--accent-light);padding:6px 18px;border-radius:30px;font-size:.82rem;font-weight:600;letter-spacing:1px;margin-bottom:22px}
.hero h1{font-size:3.1rem;font-weight:900;line-height:1.16;color:#fff;margin-bottom:18px;letter-spacing:1px}
.hero h1 span{color:var(--accent-light)}
.hero-desc{font-size:1.06rem;color:rgba(255,255,255,.82);max-width:560px;line-height:1.85;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:32px;backdrop-filter:blur(18px);box-shadow:0 30px 60px rgba(0,0,0,.3)}
.hero-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.hero-card-title{color:#fff;font-weight:700;font-size:1rem}
.hero-badge{background:linear-gradient(135deg,var(--accent-light),var(--accent));color:#2a1f05;font-size:.72rem;font-weight:800;padding:4px 12px;border-radius:20px}
.hero-score{font-size:3.2rem;font-weight:900;color:#fff;line-height:1;margin-bottom:8px}
.hero-score span{font-size:1.2rem;color:rgba(255,255,255,.55);font-weight:500}
.hero-stars{color:var(--accent);font-size:1rem;margin-bottom:22px;letter-spacing:3px}
.hero-metrics{display:grid;gap:12px;margin-bottom:26px}
.hero-metrics li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.84);font-size:.9rem}
.hero-metrics li i{color:var(--accent)}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.guide-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:34px 30px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden}
.guide-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-light),var(--accent));opacity:0;transition:var(--transition)}
.guide-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.guide-card:hover::before{opacity:1}
.guide-icon{width:58px;height:58px;border-radius:16px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.45rem;margin-bottom:20px}
.guide-card h3{font-size:1.18rem;font-weight:700;margin-bottom:12px}
.guide-card p{font-size:.9rem;color:var(--text-sub);line-height:1.75}
.guide-card .guide-link{margin-top:14px;font-size:.85rem;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.guide-card .guide-link i{font-size:.75rem;transition:var(--transition)}
.guide-card:hover .guide-link i{transform:translateX(4px)}
.guide-card:nth-child(2) .guide-icon{background:rgba(212,175,55,.14);color:var(--accent-dark)}
.guide-card:nth-child(3) .guide-icon{background:rgba(35,178,108,.12);color:var(--success)}
.steps{background:var(--bg-dark);position:relative;overflow:hidden}
.steps::before{content:'';position:absolute;top:-120px;right:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(212,175,55,.18),transparent 65%)}
.steps .section-title{color:#fff}
.steps .section-desc{color:rgba(255,255,255,.7)}
.steps .section-head{position:relative;z-index:2}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative;z-index:2}
.step-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:34px 26px;text-align:center;transition:var(--transition);position:relative}
.step-item:hover{background:rgba(255,255,255,.1);transform:translateY(-6px)}
.step-number{position:absolute;top:14px;right:18px;font-size:2.4rem;font-weight:900;color:rgba(255,255,255,.08)}
.step-icon{width:66px;height:66px;border-radius:50%;background:linear-gradient(135deg,var(--accent-light),var(--accent));color:#2a1f05;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin:0 auto 20px;box-shadow:0 8px 24px rgba(212,175,55,.25)}
.step-item h3{color:#fff;font-size:1.06rem;font-weight:700;margin-bottom:12px}
.step-item p{color:rgba(255,255,255,.65);font-size:.86rem;line-height:1.7}
.feature-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.feature-block:last-child{margin-bottom:0}
.feature-block.reverse .feature-image{order:2}
.feature-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);position:relative}
.feature-image img{width:100%;height:360px;object-fit:cover;transition:transform .6s ease}
.feature-image:hover img{transform:scale(1.04)}
.feature-image::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(10,17,40,.25))}
.feature-content .section-tag{margin-bottom:14px}
.feature-content h3{font-size:1.6rem;font-weight:800;margin-bottom:16px;line-height:1.3}
.feature-content p{color:var(--text-sub);line-height:1.8;margin-bottom:20px;font-size:.95rem}
.feature-list{display:grid;gap:12px;margin-bottom:28px}
.feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:.92rem;color:var(--text-main)}
.feature-list li i{color:var(--accent-dark);font-size:.85rem;margin-top:4px}
.metrics-wrap{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);border-radius:var(--radius-lg);padding:60px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center;position:relative;overflow:hidden}
.metrics-wrap::before{content:'';position:absolute;top:-60px;left:50%;transform:translateX(-50%);width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(212,175,55,.2),transparent 65%)}
.metric-item{position:relative;z-index:2}
.metric-value{font-size:2.6rem;font-weight:900;color:#fff;line-height:1.1}
.metric-label{color:rgba(255,255,255,.75);font-size:.92rem;margin-top:8px;font-weight:500}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.testimonial-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:34px 30px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition)}
.testimonial-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.testimonial-stars{color:var(--accent);font-size:.88rem;margin-bottom:18px;letter-spacing:2px}
.testimonial-card p{font-size:.92rem;color:var(--text-sub);line-height:1.85;margin-bottom:22px}
.testimonial-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:18px}
.testimonial-avatar{width:42px;height:42px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem}
.testimonial-name{font-weight:600;font-size:.9rem}
.testimonial-meta{font-size:.78rem;color:var(--text-light)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:rgba(26,42,94,.25)}
.faq-item.open{box-shadow:var(--shadow-sm);border-color:rgba(26,42,94,.3)}
.faq-q{display:flex;align-items:center;gap:14px;padding:22px 28px;cursor:pointer;font-weight:600;font-size:.98rem;color:var(--text-main)}
.faq-q .faq-icon{width:34px;height:34px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:.8rem;flex-shrink:0;transition:var(--transition)}
.faq-item.open .faq-icon{background:var(--primary);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 28px}
.faq-a p{padding-bottom:24px;color:var(--text-sub);font-size:.92rem;line-height:1.85}
.cta-banner{background:url('/assets/images/backpic/back-2.webp') center/cover fixed;padding:110px 0;text-align:center;position:relative}
.cta-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(6,12,30,.9),rgba(26,42,94,.72))}
.cta-banner .container{position:relative;z-index:2}
.cta-banner h2{color:#fff;font-size:2.3rem;font-weight:900;margin-bottom:16px}
.cta-banner p{color:rgba(255,255,255,.8);font-size:1.02rem;max-width:600px;margin:0 auto 36px;line-height:1.8}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.72)}
.site-footer .container{padding-top:72px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand p{font-size:.88rem;line-height:1.8;color:rgba(255,255,255,.55);margin-top:14px}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:20px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:.88rem;color:rgba(255,255,255,.55);display:inline-flex;align-items:center;gap:6px;transition:var(--transition)}
.footer-col ul a:hover{color:var(--accent-light);transform:translateX(4px)}
.footer-col ul a i{font-size:.7rem;color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:28px;border-top:1px solid rgba(255,255,255,.08);font-size:.84rem;color:rgba(255,255,255,.48);flex-wrap:wrap;gap:14px}
.footer-bottom-links{display:flex;gap:22px}
.footer-bottom-links a{color:rgba(255,255,255,.48);transition:var(--transition)}
.footer-bottom-links a:hover{color:var(--accent-light)}
.footer-disclaimer{margin-top:22px;padding:18px 24px;background:rgba(255,255,255,.04);border-radius:10px;font-size:.78rem;color:rgba(255,255,255,.4);line-height:1.7;text-align:center}
.mobile-tabbar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:1200;background:rgba(255,255,255,.97);backdrop-filter:blur(14px);border-top:1px solid var(--border);box-shadow:0 -4px 20px rgba(20,33,61,.08);padding-bottom:env(safe-area-inset-bottom)}
.mobile-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:10px 8px 8px;font-size:.7rem;color:var(--text-light);transition:var(--transition)}
.mobile-tabbar a i{font-size:1.2rem}
.mobile-tabbar a.active{color:var(--primary)}
.mobile-tabbar a.active i{transform:translateY(-2px)}
.mobile-tabbar a span{font-weight:500}
@media(max-width:1024px){
    .hero{padding:90px 0 70px}
    .hero h1{font-size:2.6rem}
    .hero .container{grid-template-columns:1fr;gap:44px}
    .guide-grid{grid-template-columns:repeat(2,1fr)}
    .steps-grid{grid-template-columns:repeat(2,1fr)}
    .feature-block{grid-template-columns:1fr;gap:36px}
    .feature-block.reverse .feature-image{order:0}
    .metrics-wrap{grid-template-columns:repeat(2,1fr)}
    .testimonials-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
    body{padding-bottom:64px}
    .site-header{position:sticky}
    .site-header .container{height:64px}
    .main-nav,.header-cta{display:none}
    .mobile-tabbar{display:flex}
    .hero{padding:70px 0 56px}
    .hero h1{font-size:2.2rem}
    .hero-desc{font-size:.96rem}
    .hero-actions .btn{width:100%}
    .hero-card{margin-top:10px}
    section{padding:64px 0}
    .section-title{font-size:1.6rem}
    .guide-grid,.testimonials-grid{grid-template-columns:1fr}
    .steps-grid{grid-template-columns:1fr}
    .metrics-wrap{padding:44px 24px}
    .feature-image img{height:260px}
    .cta-banner{padding:80px 0}
    .cta-banner h2{font-size:1.7rem}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
    .container{padding:0 18px}
    .hero h1{font-size:1.8rem}
    .hero-card{padding:24px}
    .hero-score{font-size:2.6rem}
    .section-head{margin-bottom:38px}
    .guide-card{padding:26px 22px}
    .step-item{padding:26px 20px}
    .metrics-wrap{grid-template-columns:1fr 1fr;gap:26px;padding:36px 18px}
    .metric-value{font-size:2rem}
    .faq-q{font-size:.9rem;padding:18px 22px}
    .cta-actions{flex-direction:column;padding:0 20px}
}

/* roulang page: category3 */
:root {
            --primary: #1a3a5c;
            --primary-dark: #0f2438;
            --primary-light: #2c5685;
            --accent: #d4a854;
            --accent-hover: #c2953d;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0e1a26;
            --text: #1e2a36;
            --text-light: #5b6b7a;
            --text-muted: #8a97a5;
            --border: #e1e8ee;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 4px 24px rgba(22, 45, 68, 0.08);
            --shadow-hover: 0 12px 32px rgba(22, 45, 68, 0.14);
            --transition: all 0.2s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s;

        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ Header 导航 ============ */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 21, 41, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.5px;
        }

        .brand-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }

        .main-nav a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 500;
        }

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

        .btn-login {
            padding: 8px 20px;
            background: var(--accent);
            color: #0f1e2e;
            font-weight: 600;
            border-radius: 24px;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-login:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(212, 168, 84, 0.25);
        }

        /* ============ 移动端底部 Tab ============ */
        .mobile-tabnav {
            display: none;
        }

        /* ============ Hero 区域 ============ */
        .page-hero {
            background: linear-gradient(135deg, #0e1a26 0%, #17324d 60%, #1d3d5c 100%);
            padding: 72px 0 80px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(212, 168, 84, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .hero-title {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.2;
            max-width: 780px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary {
            padding: 12px 28px;
            background: var(--accent);
            color: #0f1e2e;
            font-weight: 600;
            border-radius: 30px;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 20px rgba(212, 168, 84, 0.25);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(212, 168, 84, 0.35);
        }

        .btn-outline-light {
            padding: 12px 28px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            border-radius: 30px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

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

        .metric-item .metric-value {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .metric-item .metric-value span {
            color: var(--accent);
        }

        .metric-item .metric-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ============ 核心卖点 ============ */
        .section {
            padding: 72px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 46px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: rgba(212, 168, 84, 0.12);
            color: var(--accent-hover);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 1rem;
        }

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

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
        }

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

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 18px;
            box-shadow: 0 6px 16px rgba(26, 58, 92, 0.18);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ============ 适用场景 ============ */
        .scenario-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .scenario-img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            object-fit: cover;
            height: 100%;
            min-height: 320px;
        }

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

        .scenario-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 18px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .scenario-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }

        .scenario-item .num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .scenario-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .scenario-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ============ 安全操作流程 ============ */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 20px 24px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

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

        .step-card::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            font-size: 2.6rem;
            font-weight: 700;
            color: rgba(26, 58, 92, 0.08);
            position: absolute;
            top: 12px;
            right: 18px;
            line-height: 1;
        }

        .step-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            background: rgba(212, 168, 84, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-hover);
            font-size: 1.2rem;
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ============ 信任与社会认同 ============ */
        .trust-band {
            background: var(--bg-dark);
            color: #fff;
            padding: 60px 0;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 36px;
        }

        .trust-card {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .trust-card i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .trust-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .trust-card p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
        }

        .trust-card strong {
            display: block;
            margin-top: 12px;
            font-size: 1.4rem;
            color: #fff;
        }

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

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

        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-weight: 600;
            font-size: 0.97rem;
            color: var(--text);
        }

        .faq-question i {
            color: var(--accent);
            transition: transform 0.2s;
        }

        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }

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

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

        /* ============ CTA ============ */
        .cta-sec {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
        }

        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        /* ============ 内页图片横幅 ============ */
        .inline-banner {
            margin: 40px 0;
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            min-height: 240px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(rgba(14, 26, 38, 0.7), rgba(14, 26, 38, 0.7)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }

        .inline-banner .banner-content {
            text-align: center;
            color: #fff;
            padding: 30px;
        }

        .inline-banner h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .inline-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
        }

        /* ============ 安全提示区 ============ */
        .tip-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tip-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px;
            border-left: 4px solid var(--accent);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .tip-card h4 {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 1rem;
            color: var(--primary);
        }

        .tip-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            margin-top: auto;
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 36px;
        }

        .footer-brand .brand {
            margin-bottom: 14px;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

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

        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

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

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }

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

        .footer-disclaimer {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.3);
            padding: 20px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 10px;
            line-height: 1.6;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .hero-metrics {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }

            .main-nav {
                display: none;
            }

            .header-cta {
                margin-left: auto;
            }

            .page-hero {
                padding: 52px 0 60px;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .section {
                padding: 56px 0;
            }

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

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

            .steps-wrap {
                grid-template-columns: 1fr 1fr;
            }

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

            .hero-metrics {
                grid-template-columns: 2fr 2fr;
                gap: 16px;
            }

            .metric-item .metric-value {
                font-size: 1.5rem;
            }

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

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

            /* 移动端底部 Tab */
            .mobile-tabnav {
                display: fixed;
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-top: 1px solid var(--border);
                z-index: 200;
                justify-content: space-around;
                padding: 6px 4px 12px;
                box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
            }

            .mobile-tabnav a {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 4px;
                font-size: 0.7rem;
                color: var(--text-light);
                padding: 5px 8px;
                border-radius: 10px;
                transition: var(--transition);
            }

            .mobile-tabnav a i {
                font-size: 1.2rem;
            }

            .mobile-tabnav a.active {
                color: var(--primary);
                background: rgba(26, 58, 92, 0.08);
            }

            body {
                padding-bottom: 56px;
            }

            .site-footer {
                margin-bottom: 0;
            }
        }

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

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

            .steps-wrap {
                grid-template-columns: 1fr;
            }

            .hero-title {
                font-size: 1.6rem;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
            }

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

            .header-cta .btn-login {
                padding: 8px 14px;
            }

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

            .footer-brand p {
                max-width: 100%;
            }

            .inline-banner {
                min-height: 200px;
            }

            .inline-banner h3 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category2 */
:root{
            --primary:#0b1f3a;
            --primary-light:#142b4d;
            --primary-lighter:#1d3557;
            --accent:#d4a853;
            --accent-hover:#c6973e;
            --accent-soft:rgba(212,168,83,.12);
            --bg:#f5f7fa;
            --bg-alt:#eef1f5;
            --white:#fff;
            --text:#16202e;
            --text-muted:#5a6b7b;
            --border:#e2e8f0;
            --radius:16px;
            --radius-sm:10px;
            --shadow-sm:0 4px 12px rgba(11,31,58,.06);
            --shadow-md:0 12px 32px rgba(11,31,58,.1);
            --shadow-lg:0 24px 48px rgba(11,31,58,.14);
            --transition:all .3s ease;
            --font-base:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            --container-w:1200px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:var(--font-base);background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
        img{max-width:100%;display:block}
        a{text-decoration:none;color:inherit;transition:var(--transition)}
        ul,ol{list-style:none}
        button{font-family:inherit;cursor:pointer;border:none;background:none}
        input,textarea,select{font-family:inherit}

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

        /* ===== Header ===== */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(11,31,58,.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
        .brand{display:flex;align-items:center;gap:10px}
        .brand-icon{width:38px;height:38px;background:var(--accent);color:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;flex-shrink:0}
        .brand-text{font-size:20px;font-weight:700;color:#fff;letter-spacing:.5px}
        .main-nav{display:flex;gap:6px}
        .main-nav a{color:rgba(255,255,255,.78);padding:8px 18px;border-radius:8px;font-size:15px;font-weight:500}
        .main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
        .main-nav a.active{color:var(--primary);background:var(--accent);font-weight:600}
        .header-actions{display:flex;align-items:center;gap:12px}
        .header-cta{background:var(--accent);color:var(--primary);padding:9px 20px;border-radius:8px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
        .header-cta:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(212,168,83,.35)}
        .menu-toggle{display:none;color:#fff;font-size:22px;padding:6px}

        /* ===== Mobile Tabbar ===== */
        .mobile-tabbar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;background:var(--white);border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(0,0,0,.08)}
        .tabbar-inner{display:flex;align-items:center;justify-content:space-around;height:64px}
        .tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;gap:4px;color:var(--text-muted);font-size:11px;padding:6px 0;transition:var(--transition)}
        .tab-item i{font-size:18px}
        .tab-item span{font-weight:500}
        .tab-item.active,.tab-item:hover{color:var(--accent)}

        /* ===== Hero ===== */
        .hero{position:relative;background:linear-gradient(135deg,rgba(11,31,58,.96),rgba(11,31,58,.84)),url('/assets/images/backpic/back-2.webp') center/cover;padding:110px 0 80px;color:#fff}
        .hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);border:1px solid rgba(212,168,83,.35);color:var(--accent);padding:6px 18px;border-radius:24px;font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:24px}
        .hero-tag i{font-size:14px}
        .hero h1{font-size:48px;line-height:1.15;font-weight:800;margin-bottom:20px;letter-spacing:1px;color:#fff}
        .hero h1 span{color:var(--accent)}
        .hero-sub{font-size:18px;color:rgba(255,255,255,.85);max-width:680px;line-height:1.75;margin-bottom:36px}
        .hero-actions{display:flex;gap:16px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:10px;font-weight:600;font-size:15px;transition:var(--transition)}
        .btn-accent{background:var(--accent);color:var(--primary);box-shadow:0 4px 16px rgba(212,168,83,.25)}
        .btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 28px rgba(212,168,83,.4)}
        .btn-outline{border:1.5px solid rgba(255,255,255,.4);color:#fff;background:transparent}
        .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}
        .hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px;padding-top:40px;border-top:1px solid rgba(255,255,255,.12)}
        .hero-stat{text-align:center}
        .hero-stat .num{font-size:34px;font-weight:800;color:var(--accent);line-height:1.2}
        .hero-stat .label{font-size:13px;color:rgba(255,255,255,.7);margin-top:6px}

        /* ===== Section ===== */
        .section{padding:80px 0}
        .section-dark{background:var(--primary);color:#fff}
        .section-dark .section-header h2{color:#fff}
        .section-dark .section-header p{color:rgba(255,255,255,.7)}
        .section-light{background:var(--bg-alt)}
        .section-header{text-align:center;max-width:760px;margin:0 auto 56px}
        .section-tag{display:inline-block;background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:600;padding:6px 18px;border-radius:24px;margin-bottom:16px;letter-spacing:1px}
        .section-header h2{font-size:36px;font-weight:800;line-height:1.2;margin-bottom:14px;color:var(--text)}
        .section-header p{font-size:16px;color:var(--text-muted);line-height:1.7}

        /* ===== Grid ===== */
        .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
        .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

        /* ===== Card ===== */
        .card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:var(--transition)}
        .card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
        .card-icon{width:54px;height:54px;background:var(--accent-soft);color:var(--accent);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px}
        .card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
        .card p{font-size:14px;color:var(--text-muted);line-height:1.65}

        /* ===== Stats Card ===== */
        .stats-row{gap:32px}
        .stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:40px 28px;text-align:center;transition:var(--transition)}
        .stat-card:hover{background:rgba(255,255,255,.1);border-color:rgba(212,168,83,.4)}
        .stat-num{font-size:42px;font-weight:800;color:var(--accent);line-height:1.2}
        .stat-label{font-size:16px;font-weight:600;color:#fff;margin-top:8px}
        .stat-desc{font-size:13px;color:rgba(255,255,255,.6);margin-top:10px;line-height:1.6}

        /* ===== Steps ===== */
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
        .step-card{text-align:center;padding:40px 30px;background:var(--white);border-radius:var(--radius);border:1px solid var(--border);transition:var(--transition);position:relative}
        .step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
        .step-num{width:48px;height:48px;background:var(--accent);color:var(--primary);font-weight:700;font-size:19px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:22px;box-shadow:0 6px 16px rgba(212,168,83,.35)}
        .step-card h3{font-size:18px;margin-bottom:10px;color:var(--text)}
        .step-card p{font-size:14px;color:var(--text-muted);line-height:1.7}

        /* ===== Image Text ===== */
        .image-text{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
        .text-content .section-tag{margin-bottom:12px}
        .text-content h2{font-size:32px;font-weight:800;line-height:1.25;margin-bottom:28px;color:var(--text)}
        .feature-list{display:flex;flex-direction:column;gap:22px}
        .feature-item{display:flex;gap:16px}
        .feature-item i{width:36px;height:36px;background:var(--accent-soft);color:var(--accent);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
        .feature-item h4{font-size:16px;font-weight:700;margin-bottom:4px;color:var(--text)}
        .feature-item p{font-size:14px;color:var(--text-muted);line-height:1.6}
        .image-content img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;height:100%;object-fit:cover;min-height:320px}

        /* ===== Scenario ===== */
        .scenario-card{padding:0;overflow:hidden}
        .scenario-card img{width:100%;height:220px;object-fit:cover;transition:transform .4s ease}
        .scenario-card:hover img{transform:scale(1.05)}
        .scenario-card h3,.scenario-card p{margin:0 24px}
        .scenario-card h3{padding-top:22px}
        .scenario-card p{padding-bottom:24px}
        .scenario-card h3{position:relative}

        /* ===== FAQ ===== */
        .faq-list{max-width:820px;margin:0 auto}
        .faq-item{background:var(--white);border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:var(--transition)}
        .faq-item.open{border-color:var(--accent);box-shadow:var(--shadow-sm)}
        .faq-q{padding:20px 24px;font-weight:600;font-size:15px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--text);user-select:none}
        .faq-q i{color:var(--accent);transition:transform .3s ease;flex-shrink:0}
        .faq-item.open .faq-q i{transform:rotate(45deg)}
        .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-muted);font-size:14px;line-height:1.7}
        .faq-item.open .faq-a{max-height:320px;padding-bottom:20px}

        /* ===== CTA ===== */
        .cta-section{position:relative;background:linear-gradient(135deg,rgba(11,31,58,.96),rgba(21,43,74,.92)),url('/assets/images/backpic/back-3.png') center/cover;padding:100px 0;text-align:center;color:#fff}
        .cta-section h2{font-size:36px;font-weight:800;margin-bottom:16px;color:#fff}
        .cta-section p{font-size:16px;color:rgba(255,255,255,.75);max-width:600px;margin:0 auto 36px;line-height:1.7}
        .cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

        /* ===== Footer ===== */
        .site-footer{background:#081524;color:rgba(255,255,255,.65);padding:70px 0 30px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
        .footer-brand .brand{margin-bottom:16px}
        .footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.55);max-width:340px}
        .footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:18px}
        .footer-col ul li{margin-bottom:10px}
        .footer-col ul a{font-size:14px;color:rgba(255,255,255,.55);display:inline-flex;align-items:center;gap:6px}
        .footer-col ul a:hover{color:var(--accent);padding-left:4px}
        .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:28px;flex-wrap:wrap}
        .footer-bottom p{font-size:13px;color:rgba(255,255,255,.5)}
        .footer-bottom-links{display:flex;gap:24px}
        .footer-bottom-links a{font-size:13px;color:rgba(255,255,255,.5)}
        .footer-bottom-links a:hover{color:var(--accent)}
        .footer-disclaimer{margin-top:24px;padding:16px 20px;background:rgba(255,255,255,.04);border-radius:10px;font-size:13px;color:rgba(255,255,255,.45);text-align:center;line-height:1.6}

        /* ===== Responsive ===== */
        @media (max-width:1024px){
            .grid-4{grid-template-columns:repeat(2,1fr)}
            .footer-grid{grid-template-columns:1fr 1fr}
            .hero h1{font-size:40px}
            .section{padding:64px 0}
        }
        @media (max-width:768px){
            .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--primary);flex-direction:column;padding:14px 20px;gap:4px;box-shadow:0 16px 32px rgba(0,0,0,.2)}
            .main-nav.show{display:flex}
            .main-nav a{padding:12px 16px;font-size:15px}
            .header-cta{display:none}
            .menu-toggle{display:block}
            .mobile-tabbar{display:block}
            body{padding-bottom:64px}
            .hero{padding:80px 0 60px}
            .hero h1{font-size:32px}
            .hero-sub{font-size:16px}
            .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px}
            .hero-stat .num{font-size:28px}
            .grid-3{grid-template-columns:1fr}
            .grid-2{grid-template-columns:1fr}
            .steps{grid-template-columns:1fr;gap:20px}
            .image-text{grid-template-columns:1fr;gap:32px}
            .section-header h2{font-size:28px}
            .footer-grid{grid-template-columns:1fr;gap:32px}
            .cta-section{padding:70px 0}
            .cta-section h2{font-size:28px}
            .cta-buttons{flex-direction:column;align-items:center}
            .section{padding:56px 0}
        }
        @media (max-width:520px){
            .container{padding:0 16px}
            .brand-text{font-size:18px}
            .hero h1{font-size:28px}
            .hero .btn{width:100%}
            .hero-stats{gap:12px}
            .hero-stat .num{font-size:24px}
            .grid-4{grid-template-columns:1fr}
            .card{padding:22px}
            .stats-row{gap:16px}
            .stat-card{padding:28px 20px}
            .footer-bottom{flex-direction:column;text-align:center}
            .footer-bottom-links{gap:16px}
        }