/* roulang page: index */
:root {
            --primary: #0f1f3d;
            --primary-light: #1a3361;
            --accent: #f04e23;
            --accent-hover: #d43d18;
            --accent-light: #fff0ec;
            --surface: #ffffff;
            --surface-alt: #f7f8fa;
            --surface-dark: #0a1628;
            --text: #1a1a2e;
            --text-secondary: #5a6072;
            --text-light: #8b919e;
            --text-on-dark: #e8eaef;
            --border: #e2e5ea;
            --border-light: #eef0f4;
            --shadow-sm: 0 1px 3px rgba(15,31,61,0.06);
            --shadow-md: 0 4px 16px rgba(15,31,61,0.10);
            --shadow-lg: 0 8px 32px rgba(15,31,61,0.14);
            --shadow-xl: 0 16px 48px rgba(15,31,61,0.18);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.22s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --topbar-height: 36px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{
            font-family:var(--font-sans);
            font-size:16px;
            line-height:1.7;
            color:var(--text);
            background:var(--surface);
            min-height:100vh;
            display:flex;
            flex-direction:column;
        }
        a{color:inherit;text-decoration:none;transition:color var(--transition)}
        a:hover{color:var(--accent)}
        img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
        button,input,select,textarea{font-family:inherit;font-size:inherit}
        button{cursor:pointer;border:none;outline:none}
        button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-sm)}
        ul,ol{list-style:none}
        .container{max-width:var(--max-width);margin:0 auto;padding:0 24px;width:100%}
        .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

        /* Top Bar */
        .topbar{
            background:var(--surface-dark);
            color:var(--text-on-dark);
            font-size:13px;
            height:var(--topbar-height);
            line-height:var(--topbar-height);
            letter-spacing:0.02em;
        }
        .topbar .container{display:flex;justify-content:space-between;align-items:center;height:100%}
        .topbar-left{display:flex;gap:20px;align-items:center}
        .topbar-left span{opacity:0.85}
        .topbar-right{display:flex;gap:16px;align-items:center}
        .topbar-right a{color:var(--text-on-dark);opacity:0.8;transition:opacity var(--transition)}
        .topbar-right a:hover{opacity:1;color:var(--text-on-dark)}

        /* Header & Nav */
        .site-header{
            background:var(--surface);
            border-bottom:1px solid var(--border-light);
            position:sticky;
            top:0;
            z-index:100;
            height:var(--nav-height);
            box-shadow:var(--shadow-sm);
            transition:box-shadow var(--transition);
        }
        .site-header.scrolled{box-shadow:var(--shadow-md)}
        .site-header .container{
            display:flex;
            align-items:center;
            justify-content:space-between;
            height:100%;
        }
        .logo{
            font-size:22px;
            font-weight:700;
            color:var(--primary);
            letter-spacing:0.03em;
            white-space:nowrap;
            display:flex;
            align-items:center;
            gap:8px;
            flex-shrink:0;
        }
        .logo-icon{
            width:38px;
            height:38px;
            background:var(--accent);
            border-radius:var(--radius-sm);
            display:flex;
            align-items:center;
            justify-content:center;
            color:#fff;
            font-weight:900;
            font-size:18px;
            flex-shrink:0;
        }
        .main-nav{display:flex;align-items:center;gap:4px}
        .main-nav a{
            display:block;
            padding:10px 18px;
            border-radius:var(--radius);
            font-weight:500;
            font-size:15px;
            color:var(--text-secondary);
            transition:all var(--transition);
            position:relative;
            white-space:nowrap;
        }
        .main-nav a:hover{color:var(--accent);background:var(--accent-light)}
        .main-nav a.active{color:var(--accent);background:var(--accent-light);font-weight:600}
        .nav-cta{
            margin-left:8px;
            padding:10px 20px!important;
            background:var(--accent)!important;
            color:#fff!important;
            border-radius:var(--radius)!important;
            font-weight:600!important;
            transition:all var(--transition)!important;
        }
        .nav-cta:hover{background:var(--accent-hover)!important;color:#fff!important;transform:translateY(-1px);box-shadow:var(--shadow-md)}
        .mobile-toggle{
            display:none;
            background:none;
            border:none;
            width:40px;
            height:40px;
            flex-direction:column;
            justify-content:center;
            gap:6px;
            padding:4px;
            cursor:pointer;
            z-index:110;
        }
        .mobile-toggle span{
            display:block;
            width:26px;
            height:2.5px;
            background:var(--primary);
            border-radius:3px;
            transition:all var(--transition);
        }
        .mobile-toggle.active span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}
        .mobile-toggle.active span:nth-child(2){opacity:0}
        .mobile-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}
        .mobile-menu{
            display:none;
            position:fixed;
            top:calc(var(--topbar-height) + var(--nav-height));
            left:0;right:0;bottom:0;
            background:var(--surface);
            z-index:99;
            padding:20px 24px;
            flex-direction:column;
            gap:8px;
            overflow-y:auto;
            box-shadow:var(--shadow-lg);
        }
        .mobile-menu.open{display:flex}
        .mobile-menu a{
            display:block;
            padding:14px 18px;
            border-radius:var(--radius);
            font-size:16px;
            font-weight:500;
            color:var(--text);
            border-bottom:1px solid var(--border-light);
        }
        .mobile-menu a.active{color:var(--accent);font-weight:600}
        .mobile-menu .nav-cta{margin-left:0;text-align:center;margin-top:8px;border-bottom:none}

        /* Hero */
        .hero{
            background:linear-gradient(135deg, rgba(15,31,61,0.88) 0%, rgba(10,22,40,0.82) 60%, rgba(15,31,61,0.9) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding:90px 0 100px;
            color:#fff;
            position:relative;
            overflow:hidden;
        }
        .hero::after{
            content:'';
            position:absolute;
            bottom:0;left:0;right:0;
            height:80px;
            background:linear-gradient(transparent,var(--surface));
            pointer-events:none;
        }
        .hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
        .hero-content h1{
            font-size:clamp(28px,4vw,44px);
            font-weight:800;
            line-height:1.25;
            margin-bottom:20px;
            letter-spacing:0.02em;
        }
        .hero-content h1 .highlight{color:var(--accent);display:inline-block}
        .hero-content .hero-desc{
            font-size:18px;
            line-height:1.7;
            opacity:0.9;
            margin-bottom:32px;
            max-width:520px;
        }
        .hero-buttons{display:flex;gap:14px;flex-wrap:wrap}
        .btn{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:13px 28px;
            border-radius:var(--radius);
            font-weight:600;
            font-size:15px;
            transition:all var(--transition);
            white-space:nowrap;
            letter-spacing:0.02em;
        }
        .btn-primary{
            background:var(--accent);
            color:#fff;
            box-shadow:0 4px 14px rgba(240,78,35,0.35);
        }
        .btn-primary:hover{
            background:var(--accent-hover);
            color:#fff;
            transform:translateY(-2px);
            box-shadow:0 8px 24px rgba(240,78,35,0.40);
        }
        .btn-outline{
            background:transparent;
            color:#fff;
            border:2px solid rgba(255,255,255,0.5);
        }
        .btn-outline:hover{
            background:rgba(255,255,255,0.1);
            border-color:#fff;
            color:#fff;
            transform:translateY(-2px);
        }
        .btn-sm{padding:8px 18px;font-size:13px;border-radius:var(--radius-sm)}
        .btn-text{
            background:none;
            color:var(--accent);
            padding:8px 4px;
            font-weight:600;
            display:inline-flex;
            align-items:center;
            gap:6px;
        }
        .btn-text:hover{color:var(--accent-hover);gap:10px}
        .hero-visual{
            display:flex;
            justify-content:center;
            align-items:center;
        }
        .hero-visual-card{
            background:rgba(255,255,255,0.08);
            backdrop-filter:blur(16px);
            -webkit-backdrop-filter:blur(16px);
            border:1px solid rgba(255,255,255,0.15);
            border-radius:var(--radius-xl);
            padding:28px 32px;
            text-align:center;
            min-width:240px;
        }
        .hero-stat-number{
            font-size:clamp(36px,5vw,56px);
            font-weight:900;
            color:var(--accent);
            line-height:1;
            letter-spacing:-0.02em;
        }
        .hero-stat-label{font-size:14px;opacity:0.8;margin-top:6px}
        .hero-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
        .hero-stat-item{text-align:center}
        .hero-stat-item .num{font-size:28px;font-weight:800;color:#fff}
        .hero-stat-item .lbl{font-size:12px;opacity:0.7;margin-top:2px}

        /* Sections */
        section{padding:70px 0}
        .section-header{text-align:center;margin-bottom:50px}
        .section-label{
            display:inline-block;
            font-size:13px;
            font-weight:700;
            text-transform:uppercase;
            letter-spacing:0.08em;
            color:var(--accent);
            background:var(--accent-light);
            padding:6px 16px;
            border-radius:20px;
            margin-bottom:14px;
        }
        .section-title{
            font-size:clamp(26px,3.5vw,38px);
            font-weight:800;
            color:var(--primary);
            margin-bottom:12px;
            letter-spacing:0.02em;
        }
        .section-subtitle{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto;line-height:1.6}
        .bg-alt{background:var(--surface-alt)}

        /* Service Cards */
        .cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
        .service-card{
            background:var(--surface);
            border:1px solid var(--border-light);
            border-radius:var(--radius-lg);
            padding:32px 28px;
            transition:all var(--transition);
            position:relative;
            overflow:hidden;
        }
        .service-card:hover{
            transform:translateY(-6px);
            box-shadow:var(--shadow-lg);
            border-color:transparent;
        }
        .service-card::before{
            content:'';
            position:absolute;
            top:0;left:0;right:0;
            height:4px;
            background:var(--accent);
            transform:scaleX(0);
            transform-origin:left;
            transition:transform var(--transition);
            border-radius:0 0 var(--radius-sm) var(--radius-sm);
        }
        .service-card:hover::before{transform:scaleX(1)}
        .service-icon{
            width:52px;
            height:52px;
            border-radius:var(--radius);
            background:var(--accent-light);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:24px;
            margin-bottom:18px;
        }
        .service-card h3{font-size:19px;font-weight:700;margin-bottom:10px;color:var(--primary)}
        .service-card p{font-size:14px;color:var(--text-secondary);line-height:1.65}

        /* Category Cards */
        .cat-cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .cat-card{
            border-radius:var(--radius-lg);
            overflow:hidden;
            background:var(--surface);
            box-shadow:var(--shadow-sm);
            transition:all var(--transition);
            display:flex;
            flex-direction:column;
        }
        .cat-card:hover{
            transform:translateY(-6px);
            box-shadow:var(--shadow-xl);
        }
        .cat-card-img{
            height:200px;
            overflow:hidden;
            position:relative;
        }
        .cat-card-img img{
            width:100%;
            height:100%;
            object-fit:cover;
            transition:transform 0.5s ease;
            border-radius:0;
        }
        .cat-card:hover .cat-card-img img{transform:scale(1.06)}
        .cat-card-img .cat-tag{
            position:absolute;
            top:14px;
            left:14px;
            background:var(--accent);
            color:#fff;
            font-size:12px;
            font-weight:700;
            padding:5px 14px;
            border-radius:20px;
            letter-spacing:0.04em;
        }
        .cat-card-body{padding:22px 20px;flex:1;display:flex;flex-direction:column}
        .cat-card-body h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--primary)}
        .cat-card-body p{font-size:14px;color:var(--text-secondary);line-height:1.55;flex:1;margin-bottom:14px}
        .cat-card-body .btn-text{font-size:14px}

        /* News List */
        .news-list{display:flex;flex-direction:column;gap:0;border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface)}
        .news-item{
            display:flex;align-items:center;gap:20px;
            padding:18px 24px;
            border-bottom:1px solid var(--border-light);
            transition:all var(--transition);
        }
        .news-item:last-child{border-bottom:none}
        .news-item:hover{background:var(--surface-alt)}
        .news-item-thumb{
            width:90px;height:64px;border-radius:var(--radius-sm);
            overflow:hidden;flex-shrink:0;background:var(--surface-alt);
        }
        .news-item-thumb img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-sm)}
        .news-item-info{flex:1;min-width:0}
        .news-item-info h4{font-size:15px;font-weight:600;color:var(--primary);margin-bottom:4px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .news-item-meta{font-size:12px;color:var(--text-light);display:flex;gap:12px}
        .news-item-meta .tag{background:var(--accent-light);color:var(--accent);padding:2px 10px;border-radius:12px;font-weight:600;font-size:11px}
        .news-item-arrow{color:var(--text-light);flex-shrink:0;transition:all var(--transition);font-size:18px}
        .news-item:hover .news-item-arrow{color:var(--accent);transform:translateX(4px)}
        .news-empty{text-align:center;padding:40px;color:var(--text-light);font-size:15px}

        /* Stats */
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .stat-card{
            text-align:center;
            background:var(--surface);
            border-radius:var(--radius-lg);
            padding:32px 20px;
            box-shadow:var(--shadow-sm);
            border:1px solid var(--border-light);
            transition:all var(--transition);
        }
        .stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
        .stat-card .stat-num{font-size:clamp(32px,4vw,44px);font-weight:900;color:var(--accent);line-height:1.1}
        .stat-card .stat-unit{font-size:16px;font-weight:600;color:var(--accent)}
        .stat-card .stat-label{font-size:14px;color:var(--text-secondary);margin-top:6px}

        /* Feature Block */
        .feature-block{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
        .feature-block.reverse{direction:rtl}
        .feature-block.reverse>*{direction:ltr}
        .feature-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
        .feature-image img{border-radius:var(--radius-lg);width:100%}
        .feature-content h3{font-size:28px;font-weight:800;color:var(--primary);margin-bottom:16px}
        .feature-content p{color:var(--text-secondary);line-height:1.7;margin-bottom:12px;font-size:15px}
        .feature-list{display:flex;flex-direction:column;gap:10px;margin-top:16px}
        .feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-secondary)}
        .feature-list li::before{content:'✓';color:var(--accent);font-weight:700;flex-shrink:0;margin-top:1px}

        /* FAQ */
        .faq-list{display:flex;flex-direction:column;gap:14px;max-width:800px;margin:0 auto}
        .faq-item{
            background:var(--surface);
            border:1px solid var(--border-light);
            border-radius:var(--radius);
            overflow:hidden;
            transition:all var(--transition);
        }
        .faq-item:hover{border-color:var(--border)}
        .faq-question{
            width:100%;
            text-align:left;
            background:none;
            padding:20px 24px;
            font-weight:600;
            font-size:16px;
            color:var(--primary);
            display:flex;
            justify-content:space-between;
            align-items:center;
            transition:color var(--transition);
        }
        .faq-question:hover{color:var(--accent)}
        .faq-question .faq-icon{font-size:20px;transition:transform var(--transition);color:var(--text-light);flex-shrink:0;margin-left:12px}
        .faq-item.open .faq-question .faq-icon{transform:rotate(45deg);color:var(--accent)}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease;padding:0 24px}
        .faq-item.open .faq-answer{max-height:300px;padding:0 24px 20px}
        .faq-answer p{font-size:14px;color:var(--text-secondary);line-height:1.7}

        /* CTA */
        .cta-section{
            background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
            padding:70px 0;
            text-align:center;
            color:#fff;
            position:relative;
            overflow:hidden;
        }
        .cta-section::before{
            content:'';
            position:absolute;
            top:-60px;right:-60px;
            width:260px;height:260px;
            background:rgba(255,255,255,0.03);
            border-radius:50%;
            pointer-events:none;
        }
        .cta-section::after{
            content:'';
            position:absolute;
            bottom:-40px;left:-40px;
            width:180px;height:180px;
            background:rgba(255,255,255,0.03);
            border-radius:50%;
            pointer-events:none;
        }
        .cta-section .container{position:relative;z-index:2}
        .cta-section h2{font-size:clamp(26px,3.5vw,36px);font-weight:800;margin-bottom:14px}
        .cta-section p{font-size:16px;opacity:0.85;max-width:550px;margin:0 auto 28px;line-height:1.6}
        .cta-section .btn-primary{font-size:16px;padding:15px 36px;box-shadow:0 6px 20px rgba(240,78,35,0.45)}

        /* Footer */
        .site-footer{
            background:var(--surface-dark);
            color:var(--text-on-dark);
            padding:50px 0 30px;
            margin-top:auto;
        }
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
        .footer-brand .logo{color:#fff;margin-bottom:12px;display:block}
        .footer-brand p{font-size:13px;opacity:0.7;line-height:1.6;max-width:280px}
        .footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:#fff;letter-spacing:0.04em;text-transform:uppercase}
        .footer-col a{display:block;font-size:13px;opacity:0.7;padding:4px 0;transition:all var(--transition)}
        .footer-col a:hover{opacity:1;color:var(--accent);padding-left:4px}
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,0.12);
            padding-top:22px;
            text-align:center;
            font-size:12px;
            opacity:0.55;
        }

        /* Responsive */
        @media(max-width:1024px){
            .hero .container{grid-template-columns:1fr;gap:36px;text-align:center}
            .hero-content .hero-desc{margin-left:auto;margin-right:auto}
            .hero-buttons{justify-content:center}
            .hero-visual-card{margin:0 auto}
            .feature-block{grid-template-columns:1fr;gap:32px}
            .feature-block.reverse{direction:ltr}
            .feature-image{max-width:500px;margin:0 auto}
            .cat-cards-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
            .stats-grid{grid-template-columns:repeat(2,1fr)}
            .footer-grid{grid-template-columns:1fr 1fr}
        }
        @media(max-width:768px){
            .topbar{display:none}
            .site-header{height:60px;--nav-height:60px}
            .logo{font-size:18px}
            .logo-icon{width:30px;height:30px;font-size:15px}
            .main-nav{display:none}
            .mobile-toggle{display:flex}
            .hero{padding:60px 0 70px}
            .hero-content h1{font-size:26px}
            .hero-content .hero-desc{font-size:15px}
            .hero-stat-grid{gap:12px}
            .hero-stat-item .num{font-size:22px}
            section{padding:44px 0}
            .section-title{font-size:24px}
            .cards-grid{grid-template-columns:1fr;gap:16px}
            .cat-cards-grid{grid-template-columns:1fr;gap:18px}
            .cat-card-img{height:170px}
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
            .stat-card{padding:22px 14px}
            .stat-card .stat-num{font-size:28px}
            .faq-question{font-size:14px;padding:16px 18px}
            .faq-answer{padding:0 18px}
            .faq-item.open .faq-answer{padding:0 18px 16px}
            .cta-section{padding:48px 0}
            .cta-section h2{font-size:24px}
            .news-item{padding:14px 16px;flex-wrap:wrap;gap:12px}
            .news-item-thumb{width:70px;height:50px}
            .footer-grid{grid-template-columns:1fr;gap:24px}
            .footer-brand p{max-width:100%}
        }
        @media(max-width:520px){
            .container{padding:0 16px}
            .hero{padding:44px 0 50px}
            .hero-content h1{font-size:23px}
            .hero-buttons{flex-direction:column;width:100%}
            .hero-buttons .btn{justify-content:center;width:100%}
            .hero-visual-card{padding:20px 18px}
            .section-title{font-size:21px}
            .section-label{font-size:11px;padding:4px 12px}
            .stats-grid{gap:10px}
            .stat-card{padding:18px 10px}
            .stat-card .stat-num{font-size:24px}
            .feature-content h3{font-size:22px}
            .cat-card-body h3{font-size:16px}
            .cat-card-body p{font-size:13px}
        }

/* roulang page: article */
:root {
            --primary: #0f2557;
            --primary-light: #1a3f7c;
            --accent: #e8452d;
            --accent-hover: #d03a24;
            --accent-light: #fff0ed;
            --text: #1e293b;
            --text-secondary: #5a6677;
            --text-muted: #8896a8;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #eef2f7;
            --shadow-sm: 0 1px 3px rgba(15,37,87,0.06);
            --shadow: 0 4px 16px rgba(15,37,87,0.09);
            --shadow-lg: 0 12px 40px rgba(15,37,87,0.12);
            --shadow-xl: 0 24px 60px rgba(15,37,87,0.16);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.2s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-article: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Source Han Sans CN', system-ui, sans-serif;
            --max-width: 1200px;
            --article-width: 760px;
        }

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

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

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

        a { text-decoration: none; color: inherit; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; outline: none; }
        input, textarea { font-family: inherit; }

        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container--article { max-width: calc(var(--article-width) + 48px); }

        /* Top Bar */
        .top-bar {
            background: var(--primary);
            color: rgba(255,255,255,0.85);
            font-size: 13px;
            padding: 8px 0;
            letter-spacing: 0.02em;
        }
        .top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
        .top-bar a { color: #fff; font-weight: 500; }
        .top-bar a:hover { color: #ffcbb8; }
        .top-bar__right { display: flex; gap: 18px; align-items: center; }
        .top-bar__tag {
            background: var(--accent);
            color: #fff;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        /* Header & Nav */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; flex-wrap: wrap; gap: 16px; }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .main-nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
        .main-nav a {
            padding: 9px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .main-nav a:hover { background: #f1f5f9; color: var(--primary); }
        .main-nav a.active { background: var(--primary); color: #fff; font-weight: 600; }
        .main-nav .nav-cta {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 24px;
            margin-left: 4px;
            box-shadow: 0 2px 8px rgba(232,69,45,0.3);
        }
        .main-nav .nav-cta:hover { background: var(--accent-hover); color: #fff; box-shadow: 0 4px 14px rgba(232,69,45,0.4); transform: translateY(-1px); }
        .menu-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle:hover { background: #f1f5f9; }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(rgba(15,37,87,0.72), rgba(15,37,87,0.88)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
            padding: 70px 0 56px;
            position: relative;
        }
        .article-hero--fallback {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 60px 0 44px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: rgba(255,255,255,0.85); }
        .breadcrumb a:hover { color: #fff; text-decoration: underline; }
        .breadcrumb .sep { opacity: 0.5; font-size: 0.7rem; }
        .breadcrumb .current { color: #fff; font-weight: 500; }
        .article-hero__meta { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
        .article-hero__badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .article-hero__badge:hover { background: var(--accent-hover); }
        .article-hero__date { font-size: 0.9rem; color: rgba(255,255,255,0.8); }
        .article-hero__date i { margin-right: 5px; }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 0.02em;
            max-width: 800px;
        }
        .article-hero--fallback h1 { font-size: 1.8rem; }

        /* Article Body */
        .article-main { flex: 1; padding: 48px 0 60px; }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow);
            font-family: var(--font-article);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: 0.02em;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
        }
        .article-body p { margin-bottom: 18px; }
        .article-body ul, .article-body ol {
            margin: 14px 0 18px 22px;
            padding-left: 8px;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 8px; padding-left: 4px; }
        .article-body img {
            border-radius: var(--radius);
            margin: 24px auto;
            box-shadow: var(--shadow);
            max-width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-light);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            color: #7a2a1a;
            font-style: italic;
            letter-spacing: 0.02em;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-body th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-body tr:nth-child(even) td { background: #fafbfd; }
        .article-body strong { color: var(--primary); font-weight: 600; }
        .article-body a { color: var(--accent); text-decoration: underline; }
        .article-body a:hover { color: var(--accent-hover); }

        /* Article Footer Info */
        .article-footer-meta {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-tags { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
        .article-tags span { font-weight: 600; color: var(--text-secondary); }
        .article-tags a {
            background: #f1f5f9;
            padding: 4px 12px;
            border-radius: 16px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .article-tags a:hover { background: var(--primary); color: #fff; }
        .share-btns { display: flex; gap: 8px; align-items: center; }
        .share-btns span { font-weight: 600; color: var(--text-secondary); }
        .share-btn {
            width: 36px; height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* Not Found */
        .not-found-state {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .not-found-state .icon-circle {
            width: 80px; height: 80px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 2rem;
            color: var(--text-muted);
        }
        .not-found-state h2 { font-size: 1.5rem; color: var(--text); margin-bottom: 10px; }
        .not-found-state p { color: var(--text-secondary); margin-bottom: 24px; font-size: 1rem; }
        .btn { display: inline-block; padding: 12px 28px; border-radius: 24px; font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em; transition: all var(--transition); }
        .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(232,69,45,0.3); }
        .btn-primary:hover { background: var(--accent-hover); box-shadow: 0 6px 20px rgba(232,69,45,0.4); transform: translateY(-2px); color: #fff; }
        .btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
        .btn-outline:hover { background: var(--primary); color: #fff; }

        /* Related Articles */
        .related-section { padding: 56px 0 64px; background: var(--bg-white); border-top: 1px solid var(--border-light); }
        .section-title {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title::before {
            content: '';
            width: 4px;
            height: 26px;
            background: var(--accent);
            border-radius: 2px;
        }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .related-card__img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .related-card__body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
        .related-card__badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
            width: fit-content;
            letter-spacing: 0.02em;
        }
        .related-card h3 { font-size: 1.05rem; font-weight: 600; color: var(--text); margin-bottom: 6px; line-height: 1.4; }
        .related-card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.5; flex: 1; }
        .related-card__link { font-weight: 600; color: var(--accent); font-size: 0.88rem; margin-top: 10px; display: inline-flex; align-items: center; gap: 4px; }
        .related-card__link:hover { color: var(--accent-hover); }
        .related-card__link i { font-size: 0.7rem; transition: transform var(--transition); }
        .related-card:hover .related-card__link i { transform: translateX(3px); }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #0a1a3f 100%);
            color: #fff;
            padding: 60px 0;
            text-align: center;
        }
        .cta-section h2 { font-size: 1.65rem; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.03em; }
        .cta-section p { color: rgba(255,255,255,0.8); margin-bottom: 24px; font-size: 1rem; max-width: 560px; margin-left: auto; margin-right: auto; line-height: 1.6; }
        .cta-section .btn { font-size: 1rem; padding: 14px 36px; }

        /* Footer */
        .site-footer {
            background: #0c1a35;
            color: rgba(255,255,255,0.75);
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 32px; }
        .footer-brand p { margin-top: 10px; line-height: 1.7; font-size: 0.875rem; color: rgba(255,255,255,0.6); max-width: 300px; }
        .footer-col h4 { color: #fff; font-weight: 600; margin-bottom: 14px; font-size: 0.95rem; letter-spacing: 0.02em; }
        .footer-col a { display: block; color: rgba(255,255,255,0.6); padding: 5px 0; font-size: 0.875rem; transition: color var(--transition); }
        .footer-col a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
            letter-spacing: 0.02em;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .article-hero h1 { font-size: 1.8rem; }
            .article-body { padding: 32px 28px; font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .header-inner { position: relative; }
            .menu-toggle { display: block; }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px 16px;
                border-radius: 0 0 var(--radius) var(--radius);
                z-index: 99;
            }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 11px 14px; width: 100%; border-radius: var(--radius-sm); }
            .main-nav .nav-cta { margin-left: 0; text-align: center; margin-top: 4px; }
            .article-hero { padding: 44px 0 36px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-body { padding: 24px 18px; font-size: 0.95rem; border-radius: var(--radius); }
            .article-body h2 { font-size: 1.3rem; }
            .article-body h3 { font-size: 1.1rem; }
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .related-card__img { height: 180px; }
            .cta-section { padding: 44px 16px; }
            .cta-section h2 { font-size: 1.3rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .article-hero__meta { gap: 10px; }
            .top-bar .container { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.3rem; }
            .article-body { padding: 18px 14px; font-size: 0.9rem; line-height: 1.7; border-radius: var(--radius-sm); }
            .article-body h2 { font-size: 1.15rem; margin: 22px 0 10px; }
            .breadcrumb { font-size: 0.78rem; }
            .related-section { padding: 36px 0 44px; }
            .section-title { font-size: 1.2rem; }
            .btn { padding: 10px 22px; font-size: 0.88rem; }
            .related-card__img { height: 160px; }
        }

/* roulang page: category1 */
:root {
            --primary: #0b1e33;
            --primary-light: #152d4a;
            --primary-mid: #1e3d5f;
            --accent: #ff6b35;
            --accent-hover: #e85a28;
            --accent-light: #fff0ea;
            --gold: #f0a500;
            --green: #00a86b;
            --green-light: #e6f7f1;
            --bg: #f6f7f9;
            --bg-alt: #edf0f4;
            --white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #4a4f5c;
            --text-light: #6b7280;
            --text-muted: #9ca3af;
            --border: #e0e4ea;
            --border-light: #eef0f4;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.04);
            --shadow: 0 2px 14px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 14px 44px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --container-narrow: 960px;
            --nav-height: 68px;
            --topbar-height: 36px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-width: 320px;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

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

        /* Top Bar */
        .top-bar {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8rem;
            height: var(--topbar-height);
            line-height: var(--topbar-height);
            position: relative;
            z-index: 1001;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .top-bar a {
            color: rgba(255, 255, 255, 0.9);
            transition: color var(--transition-fast);
        }
        .top-bar a:hover {
            color: #fff;
        }
        .top-bar .top-left span {
            margin-right: 16px;
        }
        .top-bar .top-left i {
            margin-right: 5px;
            font-size: 0.75rem;
        }
        .top-bar .top-right a {
            margin-left: 14px;
            font-weight: 500;
        }
        .top-bar .top-right .top-cta {
            background: var(--accent);
            color: #fff;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            transition: background var(--transition-fast);
        }
        .top-bar .top-right .top-cta:hover {
            background: var(--accent-hover);
        }

        /* Header & Nav */
        .site-header {
            background: var(--white);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .logo-area i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .main-nav a.active {
            color: var(--accent);
            background: var(--accent-light);
            font-weight: 600;
        }
        .main-nav a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: 24px;
            font-weight: 600;
            margin-left: 8px;
            transition: all var(--transition);
        }
        .main-nav a.nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: var(--bg-alt);
        }

        /* Page Banner / Hero */
        .page-hero {
            background: var(--primary-light) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            position: relative;
            padding: 100px 0 90px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 30, 51, 0.82) 0%, rgba(11, 30, 51, 0.7) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 620px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .page-hero .hero-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            padding: 13px 30px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            border: 2px solid transparent;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-dark:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: 32px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: 20px;
        }

        /* Section */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-dark {
            background: var(--primary);
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-header .section-subtitle {
            color: var(--text-light);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .cards-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .cards-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            font-size: 1.4rem;
            margin-bottom: 16px;
            background: var(--accent-light);
            color: var(--accent);
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .card p {
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.65;
        }
        .card.card-image-top {
            padding: 0;
            overflow: hidden;
        }
        .card.card-image-top img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card.card-image-top .card-body {
            padding: 20px 22px 24px;
        }

        /* Icon Grid */
        .icon-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .icon-item {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px 18px;
            text-align: center;
            transition: all var(--transition);
        }
        .icon-item:hover {
            box-shadow: var(--shadow);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .icon-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .icon-item span {
            display: block;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
        }

        /* Steps / Process */
        .steps-row {
            display: flex;
            gap: 0;
            position: relative;
            flex-wrap: nowrap;
        }
        .steps-row::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .step-item {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--white);
            border: 3px solid var(--accent);
            color: var(--accent);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 14px;
            transition: all var(--transition);
            position: relative;
            z-index: 2;
        }
        .step-item:hover .step-num {
            background: var(--accent);
            color: #fff;
            transform: scale(1.08);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.3);
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.88rem;
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        .stat-card .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-card .stat-num span {
            color: var(--accent);
        }
        .stat-card .stat-label {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            color: var(--text);
            background: transparent;
            cursor: pointer;
            transition: background var(--transition-fast);
            gap: 12px;
        }
        .faq-q:hover {
            background: var(--bg);
        }
        .faq-q i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary-light) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            position: relative;
            padding: 80px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 30, 51, 0.88) 0%, rgba(21, 45, 74, 0.8) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.65;
            font-size: 0.88rem;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
        }

        /* Section highlight box */
        .highlight-box {
            background: var(--white);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 22px 26px;
            box-shadow: var(--shadow-sm);
            margin-top: 16px;
        }
        .highlight-box p {
            margin: 0;
            font-weight: 500;
            color: var(--text);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .icon-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero h1 {
                font-size: 2.3rem;
            }
            .steps-row {
                flex-wrap: wrap;
                gap: 20px;
            }
            .steps-row::before {
                display: none;
            }
            .step-item {
                flex: 0 0 48%;
                margin-bottom: 10px;
            }
        }

        @media (max-width: 768px) {
            .top-bar .top-left span {
                display: none;
            }
            .top-bar .top-left span:first-child {
                display: inline;
            }
            .main-nav {
                position: fixed;
                top: calc(var(--topbar-height) + var(--nav-height));
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform var(--transition);
                z-index: 999;
                border-bottom: 2px solid var(--border-light);
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
            }
            .mobile-toggle {
                display: block;
            }
            .cards-grid,
            .cards-grid.cols-4,
            .cards-grid.cols-2 {
                grid-template-columns: 1fr;
            }
            .icon-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-hero {
                padding: 64px 0 56px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .steps-row {
                flex-direction: column;
                align-items: center;
            }
            .step-item {
                flex: 1 1 auto;
                width: 100%;
                max-width: 340px;
            }
            .cta-section h2 {
                font-size: 1.55rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .icon-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .icon-item {
                padding: 16px 10px;
            }
            .icon-item i {
                font-size: 1.5rem;
            }
            .icon-item span {
                font-size: 0.82rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-num {
                font-size: 2rem;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .top-bar {
                font-size: 0.7rem;
            }
            .top-bar .top-right a {
                margin-left: 8px;
            }
            .card {
                padding: 20px 16px;
            }
            .faq-q {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
        }

        /* Utility */
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-light: #234b72;
            --color-primary-dark: #0f2840;
            --color-accent: #f0883e;
            --color-accent-light: #f5a665;
            --color-accent-dark: #d4702a;
            --color-accent-second: #2a9d8f;
            --color-bg: #f8f9fb;
            --color-bg-white: #ffffff;
            --color-bg-light: #eef2f7;
            --color-bg-dark: #1a1f2e;
            --color-text: #1a1a1a;
            --color-text-secondary: #5a6270;
            --color-text-weak: #8892a0;
            --color-text-white: #f0f2f5;
            --color-border: #dde3ed;
            --color-border-light: #e9edf4;
            --color-success: #27ae60;
            --color-warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 1024px) {
            .container {
                max-width: 100%;
                padding: 0 20px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        .top-bar {
            background: var(--color-primary-dark);
            color: var(--color-text-white);
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-bar a {
            color: var(--color-accent-light);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .top-bar a:hover {
            color: #fff;
        }
        .top-bar .top-actions {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-xs);
            border-bottom: 1px solid var(--color-border-light);
        }
        header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 24px;
        }
        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.01em;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--color-accent);
            margin-right: 6px;
            font-size: 1.2rem;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-bg-light);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            box-shadow: 0 3px 12px rgba(240, 136, 62, 0.35);
            transition: all var(--transition-normal);
        }
        .main-nav a.nav-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 20px rgba(240, 136, 62, 0.45);
            transform: translateY(-1px);
            color: #fff;
        }

        .mobile-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: var(--color-bg-light);
        }

        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                padding: 7px 12px;
                font-size: 0.85rem;
            }
            .logo {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                padding: 12px 16px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--color-border-light);
                gap: 4px;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                text-align: center;
                padding: 10px 16px;
                border-radius: var(--radius-md);
            }
            .top-bar .container {
                justify-content: center;
                text-align: center;
            }
            .top-bar .top-actions {
                justify-content: center;
            }
        }

        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 60, 94, 0.88) 0%, rgba(15, 40, 64, 0.92) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 80px 0;
            color: #fff;
            overflow: hidden;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--color-bg);
            border-radius: 50% 50% 0 0 / 30px 30px 0 0;
            z-index: 2;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }
        .hero-section h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero-section h1 span {
            color: var(--color-accent-light);
        }
        .hero-section .hero-desc {
            font-size: 1.08rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 700;
            font-family: var(--font-heading);
            color: var(--color-accent-light);
            line-height: 1;
        }
        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-normal);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(240, 136, 62, 0.4);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 8px 28px rgba(240, 136, 62, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 15px 34px;
            font-size: 1rem;
        }
        .hero-image-wrap {
            position: relative;
            z-index: 3;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            aspect-ratio: 4/3;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 1024px) {
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .hero-section .hero-content {
                gap: 32px;
            }
            .hero-section {
                min-height: auto;
                padding: 56px 0;
            }
        }
        @media (max-width: 768px) {
            .hero-section .hero-content {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-image-wrap {
                aspect-ratio: 16/10;
                max-width: 400px;
                margin: 0 auto;
            }
            .hero-section::after {
                height: 30px;
                border-radius: 50% 50% 0 0 / 15px 15px 0 0;
            }
            .hero-section {
                padding: 40px 0 56px;
            }
        }

        .section {
            padding: 72px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title .label-tag {
            display: inline-block;
            background: rgba(42, 157, 143, 0.1);
            color: var(--color-accent-second);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-title h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-title p {
            color: var(--color-text-secondary);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.55rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            background: rgba(26, 60, 94, 0.07);
            color: var(--color-primary);
            transition: all var(--transition-normal);
        }
        .feature-card:hover .card-icon {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.06);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 48px;
        }
        .scenario-block:last-child {
            margin-bottom: 0;
        }
        .scenario-block.reverse {
            direction: rtl;
        }
        .scenario-block.reverse .scenario-text {
            direction: ltr;
        }
        .scenario-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16/11;
            background: var(--color-bg-light);
        }
        .scenario-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .scenario-image:hover img {
            transform: scale(1.04);
        }
        .scenario-text .tag {
            display: inline-block;
            background: rgba(240, 136, 62, 0.1);
            color: var(--color-accent-dark);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            margin-bottom: 10px;
        }
        .scenario-text h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 10px;
        }
        .scenario-text p {
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
        }
        .scenario-text ul {
            list-style: none;
            padding: 0;
        }
        .scenario-text ul li {
            padding: 5px 0 5px 22px;
            position: relative;
            color: var(--color-text-secondary);
            font-size: 0.93rem;
        }
        .scenario-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 13px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        @media (max-width: 768px) {
            .scenario-block,
            .scenario-block.reverse {
                grid-template-columns: 1fr;
                direction: ltr;
                gap: 24px;
            }
            .scenario-text h3 {
                font-size: 1.25rem;
            }
            .scenario-image {
                aspect-ratio: 16/10;
            }
        }

        .steps-timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .steps-timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent-second) 100%);
            border-radius: 3px;
        }
        .step-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 36px;
        }
        .step-item:last-child {
            margin-bottom: 0;
        }
        .step-dot {
            position: absolute;
            left: -28px;
            top: 4px;
            width: 18px;
            height: 18px;
            background: #fff;
            border: 3px solid var(--color-accent);
            border-radius: 50%;
            z-index: 2;
            box-shadow: 0 0 0 6px rgba(240, 136, 62, 0.1);
        }
        .step-item .step-num {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 4px;
        }
        .step-item h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            margin-bottom: 6px;
        }
        .step-item p {
            color: var(--color-text-secondary);
            font-size: 0.93rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-timeline {
                padding-left: 28px;
            }
            .steps-timeline::before {
                left: 10px;
            }
            .step-item {
                padding-left: 24px;
            }
            .step-dot {
                left: -22px;
                width: 14px;
                height: 14px;
            }
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .advantage-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition-normal);
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .advantage-card .adv-num {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 8px;
        }
        .advantage-card h4 {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary-dark);
            margin-bottom: 6px;
        }
        .advantage-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .advantages-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .advantage-card .adv-num {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            text-align: left;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-bg-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: transform var(--transition-normal);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
        }

        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 60, 94, 0.9) 0%, rgba(15, 40, 64, 0.94) 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 72px 0;
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 24px 72px;
            overflow: hidden;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.65;
        }
        .cta-section .btn {
            font-size: 1rem;
            padding: 15px 36px;
        }
        @media (max-width: 768px) {
            .cta-section {
                margin: 0 12px 48px;
                padding: 48px 16px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
        }
        .footer-brand p {
            margin-top: 10px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.82rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }

        .breadcrumb {
            padding: 16px 0;
            font-size: 0.85rem;
            color: var(--color-text-weak);
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb span {
            margin: 0 6px;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .breadcrumb {
                font-size: 0.78rem;
                padding: 10px 0;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A365D;
            --primary-light: #2B5F8E;
            --primary-lighter: #3A7BBF;
            --accent: #E8593A;
            --accent-hover: #C7452A;
            --accent-light: #FFF0EC;
            --bg-page: #F7F9FB;
            --bg-white: #FFFFFF;
            --bg-dark: #0F1F33;
            --bg-card: #FFFFFF;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-light: #718096;
            --text-muted: #A0AEC0;
            --text-on-dark: #E2E8F0;
            --text-white: #FFFFFF;
            --border: #E2E8F0;
            --border-light: #EDF2F7;
            --radius-lg: 16px;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 28px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.11);
            --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --info-bar-height: 38px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        input {
            font-family: inherit;
            outline: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            font-size: 15px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(43, 95, 142, 0.1);
        }

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

        /* Header Info Bar */
        .info-bar {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            font-size: 13px;
            height: var(--info-bar-height);
            line-height: var(--info-bar-height);
            letter-spacing: 0.02em;
        }
        .info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .info-bar a {
            color: #CBD5E0;
            font-size: 13px;
        }
        .info-bar a:hover {
            color: #fff;
        }
        .info-bar-left {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .info-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .info-bar-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #48BB78;
            display: inline-block;
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        /* Header */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .logo-text {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            color: var(--text-heading);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        /* Navigation */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary-light);
            background: #F0F5FA;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: #EBF2FA;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .main-nav .nav-cta {
            background: var(--accent);
            color: #fff !important;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 24px;
            margin-left: 8px;
            transition: all var(--transition);
        }
        .main-nav .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(232, 89, 58, 0.35);
        }
        .main-nav .nav-cta::after {
            display: none;
        }

        /* Mobile Nav Toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px;
            line-height: 1;
        }

        /* Section */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-lg {
            padding: 80px 0;
        }
        .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-heading h2 {
            font-family: var(--font-heading);
            font-size: 34px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .section-heading p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent);
            background: var(--accent-light);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0F1F33 0%, #1A365D 40%, #1B3F6B 100%);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.28;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 54, 93, 0.3) 0%, rgba(15, 31, 51, 0.85) 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 720px;
            padding: 60px 0;
        }
        .hero-content .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-content .hero-subtitle {
            font-size: 18px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 28px;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 89, 58, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 89, 58, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 22px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 18px;
            border-radius: 32px;
        }

        /* Feature Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #CBD5E0;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 24px;
            color: #fff;
        }
        .feature-icon.blue {
            background: linear-gradient(135deg, #3A7BBF, #2B5F8E);
        }
        .feature-icon.orange {
            background: linear-gradient(135deg, #E8593A, #D0442A);
        }
        .feature-icon.teal {
            background: linear-gradient(135deg, #319795, #285E61);
        }
        .feature-icon.purple {
            background: linear-gradient(135deg, #6B46C1, #553C9A);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Category Cards Grid */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #CBD5E0;
        }
        .cat-card-img {
            height: 200px;
            overflow: hidden;
            background: #EDF2F7;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.06);
        }
        .cat-card-body {
            padding: 20px;
        }
        .cat-card-body h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .cat-card-body p {
            font-size: 14px;
            color: var(--text-light);
        }

        /* Process Steps */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .step-item {
            position: relative;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            counter-increment: step;
        }
        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-item h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Review Highlights */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .review-card-img {
            height: 220px;
            overflow: hidden;
            background: #EDF2F7;
        }
        .review-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .review-card:hover .review-card-img img {
            transform: scale(1.06);
        }
        .review-card-body {
            padding: 20px;
        }
        .review-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 4px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
        }
        .review-tag.hot {
            background: #FFF0EC;
            color: var(--accent);
        }
        .review-tag.new {
            background: #EBF8FF;
            color: #2B6CB0;
        }
        .review-tag.top {
            background: #F0FFF4;
            color: #276749;
        }
        .review-card-body h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .review-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .review-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .review-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .review-rating {
            color: #F6AD55;
        }

        /* Stats */
        .stats-bar {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 44px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-family: var(--font-heading);
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .stat-item .stat-unit {
            font-size: 18px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        .stat-divider {
            width: 1px;
            background: rgba(255, 255, 255, 0.2);
            margin: 0 auto;
            height: 60px;
            align-self: center;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: #CBD5E0;
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: #F7FAFC;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #EDF2F7;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--text-light);
            transition: all var(--transition-fast);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1A365D 0%, #0F1F33 100%);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #CBD5E0;
            padding: 56px 0 28px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AEC0;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: #A0AEC0;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #718096;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-divider {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .hero-content h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .info-bar {
                display: none;
            }
            .header-inner {
                height: 60px;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 0;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                z-index: 999;
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav a {
                padding: 14px 24px;
                border-radius: 0;
                font-size: 16px;
                border-bottom: 1px solid var(--border-light);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: #EBF2FA;
                border-left: 3px solid var(--primary);
            }
            .main-nav .nav-cta {
                margin: 10px 20px;
                text-align: center;
                border-radius: 24px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
                padding: 28px 20px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .section-heading h2 {
                font-size: 26px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content .hero-subtitle {
                font-size: 16px;
            }
            .hero-section {
                min-height: 400px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-brand {
                text-align: center;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                justify-content: center;
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .section {
                padding: 40px 0;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .feature-card {
                padding: 24px 16px;
            }
            .cat-card-img {
                height: 160px;
            }
            .review-card-img {
                height: 180px;
            }
            .logo-text {
                font-size: 17px;
            }
            .hero-actions .btn {
                font-size: 15px;
                padding: 12px 20px;
            }
        }

        /* Utility */
        .text-accent {
            color: var(--accent);
        }
        .bg-light {
            background: var(--bg-page);
        }
        .bg-white {
            background: var(--bg-white);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }