/* roulang page: index */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #234b78;
            --color-primary-dark: #0f2440;
            --color-accent: #c8903e;
            --color-accent-light: #d4a853;
            --color-accent-dark: #a6752e;
            --color-bg: #f6f7f9;
            --color-white: #ffffff;
            --color-text: #1a202c;
            --color-text-secondary: #4a5568;
            --color-text-muted: #718096;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --color-success: #38a169;
            --color-blue-soft: #ebf4ff;
            --color-gold-soft: #fef9f0;
            --sidebar-width: 248px;
            --header-mobile-height: 60px;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.09), 0 4px 8px rgba(0,0,0,0.04);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.12), 0 6px 12px rgba(0,0,0,0.05);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4,0,0.2,1);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
        body{
            font-family:var(--font-sans);
            font-size:16px;
            line-height:1.65;
            color:var(--color-text);
            background:var(--color-bg);
            -webkit-font-smoothing:antialiased;
            -moz-osx-font-smoothing:grayscale;
            min-height:100vh;
        }
        a{color:inherit;text-decoration:none;transition:color var(--transition-fast);}
        img{max-width:100%;height:auto;display:block;}
        ul,ol{list-style:none;}
        button,input,textarea{font-family:inherit;font-size:inherit;}
        button{cursor:pointer;border:none;background:none;}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--color-text);}
        p{margin-bottom:0.75rem;}
        p:last-child{margin-bottom:0;}

        /* ===== SIDEBAR NAVIGATION (Desktop) ===== */
        .sidebar-nav{
            position:fixed;
            top:0;
            left:0;
            width:var(--sidebar-width);
            height:100vh;
            background:var(--color-primary-dark);
            z-index:1000;
            display:flex;
            flex-direction:column;
            overflow-y:auto;
            overflow-x:hidden;
            transition:transform var(--transition-slow);
            box-shadow:2px 0 24px rgba(0,0,0,0.15);
        }
        .sidebar-nav .nav-brand{
            padding:28px 24px 20px;
            border-bottom:1px solid rgba(255,255,255,0.08);
            flex-shrink:0;
        }
        .sidebar-nav .nav-brand a{
            display:flex;
            align-items:center;
            gap:10px;
            font-size:1.2rem;
            font-weight:700;
            color:#ffffff;
            letter-spacing:0.02em;
            white-space:nowrap;
        }
        .sidebar-nav .nav-brand .brand-icon{
            width:38px;
            height:38px;
            border-radius:var(--radius-sm);
            background:var(--color-accent);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.1rem;
            color:#fff;
            flex-shrink:0;
        }
        .sidebar-nav .nav-menu{
            flex:1;
            padding:16px 14px;
            display:flex;
            flex-direction:column;
            gap:4px;
        }
        .sidebar-nav .nav-menu .nav-item{
            display:flex;
            align-items:center;
            gap:12px;
            padding:12px 16px;
            border-radius:var(--radius-md);
            color:rgba(255,255,255,0.78);
            font-size:0.95rem;
            font-weight:500;
            transition:all var(--transition-fast);
            white-space:nowrap;
            position:relative;
        }
        .sidebar-nav .nav-menu .nav-item:hover{
            background:rgba(255,255,255,0.06);
            color:#ffffff;
        }
        .sidebar-nav .nav-menu .nav-item.active{
            background:var(--color-accent);
            color:#ffffff;
            font-weight:600;
            box-shadow:0 4px 14px rgba(200,144,62,0.35);
        }
        .sidebar-nav .nav-menu .nav-item i{
            width:20px;
            text-align:center;
            font-size:0.9rem;
            flex-shrink:0;
        }
        .sidebar-nav .nav-footer{
            padding:16px 24px 24px;
            border-top:1px solid rgba(255,255,255,0.08);
            flex-shrink:0;
        }
        .sidebar-nav .nav-footer .footer-info{
            font-size:0.78rem;
            color:rgba(255,255,255,0.45);
            line-height:1.5;
        }

        /* ===== MOBILE HEADER ===== */
        .mobile-header{
            display:none;
            position:fixed;
            top:0;
            left:0;
            right:0;
            height:var(--header-mobile-height);
            background:var(--color-primary-dark);
            z-index:999;
            align-items:center;
            padding:0 16px;
            box-shadow:0 2px 12px rgba(0,0,0,0.12);
        }
        .mobile-header .mobile-brand{
            font-weight:700;
            font-size:1.05rem;
            color:#ffffff;
            display:flex;
            align-items:center;
            gap:8px;
        }
        .mobile-header .mobile-brand .brand-icon{
            width:32px;
            height:32px;
            border-radius:var(--radius-sm);
            background:var(--color-accent);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:0.9rem;
            color:#fff;
        }
        .mobile-header .hamburger{
            margin-left:auto;
            width:40px;
            height:40px;
            display:flex;
            align-items:center;
            justify-content:center;
            color:#ffffff;
            font-size:1.35rem;
            border-radius:var(--radius-sm);
            transition:background var(--transition-fast);
        }
        .mobile-header .hamburger:hover{
            background:rgba(255,255,255,0.08);
        }

        /* ===== OVERLAY ===== */
        .sidebar-overlay{
            display:none;
            position:fixed;
            inset:0;
            background:rgba(0,0,0,0.5);
            z-index:998;
            opacity:0;
            transition:opacity var(--transition-normal);
        }
        .sidebar-overlay.active{
            opacity:1;
        }

        /* ===== MAIN CONTENT AREA ===== */
        .main-wrapper{
            margin-left:var(--sidebar-width);
            min-height:100vh;
            display:flex;
            flex-direction:column;
        }

        /* ===== HERO SECTION ===== */
        .hero-section{
            position:relative;
            background:linear-gradient(135deg, var(--color-primary) 0%, #0f2b4a 40%, #1a3d5c 100%);
            background-image:url('/assets/images/backpic/back-1.png');
            background-size:cover;
            background-position:center;
            background-blend-mode:overlay;
            padding:80px 48px 90px;
            color:#ffffff;
            overflow:hidden;
            min-height:520px;
            display:flex;
            align-items:center;
        }
        .hero-section::before{
            content:'';
            position:absolute;
            inset:0;
            background:linear-gradient(135deg, rgba(15,36,64,0.82) 0%, rgba(26,54,93,0.7) 50%, rgba(15,36,64,0.78) 100%);
            z-index:1;
        }
        .hero-section .hero-container{
            position:relative;
            z-index:2;
            max-width:900px;
            width:100%;
        }
        .hero-section .hero-badge{
            display:inline-block;
            padding:6px 16px;
            border-radius:50px;
            background:rgba(255,255,255,0.13);
            backdrop-filter:blur(6px);
            font-size:0.85rem;
            font-weight:500;
            color:rgba(255,255,255,0.9);
            margin-bottom:20px;
            letter-spacing:0.03em;
            border:1px solid rgba(255,255,255,0.18);
        }
        .hero-section h1{
            font-size:2.7rem;
            font-weight:800;
            color:#ffffff;
            line-height:1.25;
            margin-bottom:18px;
            letter-spacing:-0.01em;
        }
        .hero-section h1 .accent-text{
            color:var(--color-accent-light);
        }
        .hero-section .hero-subtitle{
            font-size:1.12rem;
            color:rgba(255,255,255,0.82);
            line-height:1.7;
            max-width:680px;
            margin-bottom:32px;
        }
        .hero-section .hero-actions{
            display:flex;
            flex-wrap:wrap;
            gap:14px;
        }
        .btn{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:13px 28px;
            border-radius:50px;
            font-weight:600;
            font-size:0.95rem;
            transition:all var(--transition-normal);
            letter-spacing:0.02em;
            white-space:nowrap;
        }
        .btn-primary{
            background:var(--color-accent);
            color:#ffffff;
            box-shadow:0 6px 20px rgba(200,144,62,0.35);
        }
        .btn-primary:hover{
            background:var(--color-accent-light);
            box-shadow:0 8px 28px rgba(200,144,62,0.45);
            transform:translateY(-2px);
        }
        .btn-primary:active{
            transform:translateY(0);
            box-shadow:0 4px 14px rgba(200,144,62,0.3);
        }
        .btn-outline{
            background:transparent;
            color:#ffffff;
            border:2px solid rgba(255,255,255,0.45);
        }
        .btn-outline:hover{
            background:rgba(255,255,255,0.08);
            border-color:rgba(255,255,255,0.7);
            transform:translateY(-2px);
        }
        .btn-outline:active{
            transform:translateY(0);
        }
        .btn-sm{
            padding:9px 18px;
            font-size:0.85rem;
            border-radius:40px;
        }
        .btn-accent-ghost{
            background:var(--color-gold-soft);
            color:var(--color-accent-dark);
            border:1px solid rgba(200,144,62,0.25);
        }
        .btn-accent-ghost:hover{
            background:var(--color-accent);
            color:#fff;
            border-color:var(--color-accent);
            transform:translateY(-2px);
            box-shadow:0 6px 18px rgba(200,144,62,0.3);
        }

        /* ===== SECTION COMMONS ===== */
        .section{
            padding:64px 48px;
        }
        .section-header{
            text-align:center;
            margin-bottom:48px;
        }
        .section-header .section-label{
            display:inline-block;
            font-size:0.82rem;
            font-weight:600;
            color:var(--color-accent-dark);
            text-transform:uppercase;
            letter-spacing:0.06em;
            margin-bottom:8px;
            background:var(--color-gold-soft);
            padding:4px 14px;
            border-radius:50px;
        }
        .section-header h2{
            font-size:2rem;
            font-weight:700;
            color:var(--color-primary);
            margin-bottom:10px;
        }
        .section-header .section-desc{
            font-size:1rem;
            color:var(--color-text-muted);
            max-width:600px;
            margin:0 auto;
        }
        .container{
            max-width:1200px;
            margin:0 auto;
            width:100%;
        }

        /* ===== CATEGORY CARDS GRID ===== */
        .category-grid{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:24px;
        }
        .category-card{
            background:var(--color-white);
            border-radius:var(--radius-lg);
            overflow:hidden;
            box-shadow:var(--shadow-sm);
            transition:all var(--transition-normal);
            border:1px solid var(--color-border-light);
            display:flex;
            flex-direction:column;
        }
        .category-card:hover{
            box-shadow:var(--shadow-lg);
            transform:translateY(-4px);
            border-color:var(--color-border);
        }
        .category-card .card-img-wrap{
            height:200px;
            overflow:hidden;
            position:relative;
            background:var(--color-blue-soft);
        }
        .category-card .card-img-wrap img{
            width:100%;
            height:100%;
            object-fit:cover;
            transition:transform var(--transition-slow);
        }
        .category-card:hover .card-img-wrap img{
            transform:scale(1.06);
        }
        .category-card .card-img-wrap .card-overlay-tag{
            position:absolute;
            top:14px;
            left:14px;
            padding:5px 12px;
            border-radius:50px;
            background:rgba(0,0,0,0.55);
            backdrop-filter:blur(4px);
            color:#fff;
            font-size:0.78rem;
            font-weight:500;
            letter-spacing:0.03em;
        }
        .category-card .card-body{
            padding:20px 22px 24px;
            flex:1;
            display:flex;
            flex-direction:column;
        }
        .category-card .card-body h3{
            font-size:1.15rem;
            font-weight:700;
            color:var(--color-primary);
            margin-bottom:8px;
        }
        .category-card .card-body p{
            font-size:0.9rem;
            color:var(--color-text-muted);
            line-height:1.6;
            flex:1;
            margin-bottom:14px;
        }
        .category-card .card-body .card-link{
            font-weight:600;
            font-size:0.9rem;
            color:var(--color-accent-dark);
            display:inline-flex;
            align-items:center;
            gap:6px;
            transition:gap var(--transition-fast);
        }
        .category-card .card-body .card-link:hover{
            gap:10px;
            color:var(--color-accent);
        }

        /* ===== CMS LIST SECTION ===== */
        .cms-section{
            background:var(--color-white);
        }
        .cms-list{
            display:grid;
            grid-template-columns:repeat(2,1fr);
            gap:16px;
        }
        .cms-item{
            display:flex;
            gap:18px;
            padding:18px 20px;
            background:var(--color-bg);
            border-radius:var(--radius-md);
            transition:all var(--transition-fast);
            border:1px solid transparent;
            align-items:flex-start;
        }
        .cms-item:hover{
            background:var(--color-white);
            border-color:var(--color-border);
            box-shadow:var(--shadow-md);
        }
        .cms-item .cms-thumb{
            width:90px;
            height:70px;
            border-radius:var(--radius-sm);
            overflow:hidden;
            flex-shrink:0;
            background:var(--color-blue-soft);
        }
        .cms-item .cms-thumb img{
            width:100%;
            height:100%;
            object-fit:cover;
        }
        .cms-item .cms-info{
            flex:1;
            min-width:0;
        }
        .cms-item .cms-info h4{
            font-size:0.95rem;
            font-weight:600;
            color:var(--color-primary);
            margin-bottom:4px;
            line-height:1.4;
            display:-webkit-box;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
            overflow:hidden;
            transition:color var(--transition-fast);
        }
        .cms-item:hover .cms-info h4{
            color:var(--color-accent-dark);
        }
        .cms-item .cms-info .cms-meta{
            font-size:0.78rem;
            color:var(--color-text-muted);
            display:flex;
            align-items:center;
            gap:10px;
        }
        .cms-item .cms-info .cms-excerpt{
            font-size:0.82rem;
            color:var(--color-text-secondary);
            line-height:1.5;
            margin-top:4px;
            display:-webkit-box;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
            overflow:hidden;
        }
        .cms-empty{
            text-align:center;
            padding:40px 20px;
            color:var(--color-text-muted);
            font-size:0.95rem;
            grid-column:1/-1;
        }

        /* ===== STATS SECTION ===== */
        .stats-section{
            background:var(--color-primary);
            background-image:url('/assets/images/backpic/back-2.png');
            background-size:cover;
            background-position:center;
            background-blend-mode:overlay;
            position:relative;
            color:#ffffff;
        }
        .stats-section::before{
            content:'';
            position:absolute;
            inset:0;
            background:rgba(15,36,64,0.88);
            z-index:1;
        }
        .stats-section .container{
            position:relative;
            z-index:2;
        }
        .stats-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:32px;
            text-align:center;
        }
        .stat-item .stat-number{
            font-size:2.8rem;
            font-weight:800;
            color:var(--color-accent-light);
            line-height:1;
            margin-bottom:6px;
        }
        .stat-item .stat-label{
            font-size:0.9rem;
            color:rgba(255,255,255,0.75);
            font-weight:500;
        }
        .stat-item .stat-unit{
            font-size:1.2rem;
            font-weight:600;
        }

        /* ===== SERVICES SECTION ===== */
        .services-grid{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:24px;
        }
        .service-card{
            background:var(--color-white);
            border-radius:var(--radius-lg);
            padding:30px 26px;
            box-shadow:var(--shadow-sm);
            border:1px solid var(--color-border-light);
            transition:all var(--transition-normal);
            text-align:center;
        }
        .service-card:hover{
            box-shadow:var(--shadow-lg);
            transform:translateY(-4px);
        }
        .service-card .service-icon{
            width:56px;
            height:56px;
            border-radius:var(--radius-md);
            background:var(--color-blue-soft);
            display:flex;
            align-items:center;
            justify-content:center;
            margin:0 auto 18px;
            font-size:1.35rem;
            color:var(--color-primary);
            transition:all var(--transition-normal);
        }
        .service-card:hover .service-icon{
            background:var(--color-primary);
            color:#fff;
            transform:scale(1.08);
        }
        .service-card h4{
            font-size:1.05rem;
            font-weight:700;
            color:var(--color-primary);
            margin-bottom:8px;
        }
        .service-card p{
            font-size:0.88rem;
            color:var(--color-text-muted);
            line-height:1.6;
        }

        /* ===== ADVANTAGES ===== */
        .advantages-wrapper{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:40px;
            align-items:center;
        }
        .advantages-image img{
            border-radius:var(--radius-lg);
            box-shadow:var(--shadow-lg);
            width:100%;
        }
        .advantages-list{
            display:flex;
            flex-direction:column;
            gap:18px;
        }
        .advantage-item{
            display:flex;
            gap:14px;
            align-items:flex-start;
            padding:16px 18px;
            background:var(--color-white);
            border-radius:var(--radius-md);
            box-shadow:var(--shadow-sm);
            border-left:4px solid var(--color-accent);
            transition:all var(--transition-fast);
        }
        .advantage-item:hover{
            box-shadow:var(--shadow-md);
            transform:translateX(4px);
        }
        .advantage-item .adv-icon{
            width:40px;
            height:40px;
            border-radius:50%;
            background:var(--color-gold-soft);
            display:flex;
            align-items:center;
            justify-content:center;
            flex-shrink:0;
            color:var(--color-accent-dark);
            font-size:0.95rem;
        }
        .advantage-item .adv-content h5{
            font-size:0.95rem;
            font-weight:700;
            color:var(--color-primary);
            margin-bottom:3px;
        }
        .advantage-item .adv-content p{
            font-size:0.84rem;
            color:var(--color-text-muted);
            margin:0;
        }

        /* ===== FAQ ===== */
        .faq-list{
            max-width:800px;
            margin:0 auto;
            display:flex;
            flex-direction:column;
            gap:10px;
        }
        .faq-item{
            background:var(--color-white);
            border-radius:var(--radius-md);
            border:1px solid var(--color-border-light);
            overflow:hidden;
            transition:all var(--transition-fast);
        }
        .faq-item:hover{
            border-color:var(--color-border);
            box-shadow:var(--shadow-sm);
        }
        .faq-item .faq-question{
            padding:18px 22px;
            font-weight:600;
            font-size:0.98rem;
            color:var(--color-primary);
            cursor:pointer;
            display:flex;
            justify-content:space-between;
            align-items:center;
            gap:14px;
            user-select:none;
            transition:color var(--transition-fast);
        }
        .faq-item .faq-question:hover{
            color:var(--color-accent-dark);
        }
        .faq-item .faq-question i{
            transition:transform var(--transition-normal);
            color:var(--color-text-muted);
            font-size:0.85rem;
        }
        .faq-item.open .faq-question i{
            transform:rotate(180deg);
            color:var(--color-accent);
        }
        .faq-item .faq-answer{
            max-height:0;
            overflow:hidden;
            transition:max-height var(--transition-slow),padding var(--transition-slow);
            padding:0 22px;
            font-size:0.9rem;
            color:var(--color-text-secondary);
            line-height:1.7;
        }
        .faq-item.open .faq-answer{
            max-height:300px;
            padding:0 22px 18px;
        }

        /* ===== CTA SECTION ===== */
        .cta-section{
            background:linear-gradient(135deg,var(--color-primary) 0%,#0f2b4a 100%);
            text-align:center;
            color:#ffffff;
            position:relative;
            overflow:hidden;
        }
        .cta-section::after{
            content:'';
            position:absolute;
            width:400px;
            height:400px;
            border-radius:50%;
            background:rgba(200,144,62,0.1);
            top:-100px;
            right:-80px;
            pointer-events:none;
        }
        .cta-section .container{
            position:relative;
            z-index:2;
        }
        .cta-section h2{
            font-size:2rem;
            font-weight:700;
            color:#ffffff;
            margin-bottom:12px;
        }
        .cta-section p{
            font-size:1.05rem;
            color:rgba(255,255,255,0.8);
            max-width:560px;
            margin:0 auto 28px;
        }

        /* ===== FOOTER ===== */
        .site-footer{
            background:var(--color-primary-dark);
            color:rgba(255,255,255,0.7);
            padding:40px 48px;
            font-size:0.88rem;
        }
        .site-footer .footer-grid{
            display:grid;
            grid-template-columns:2fr 1fr 1fr;
            gap:40px;
            max-width:1200px;
            margin:0 auto;
        }
        .site-footer .footer-brand-name{
            font-weight:700;
            font-size:1.1rem;
            color:#ffffff;
            margin-bottom:8px;
        }
        .site-footer .footer-desc{
            line-height:1.7;
            font-size:0.85rem;
            color:rgba(255,255,255,0.55);
        }
        .site-footer h5{
            font-size:0.9rem;
            color:#ffffff;
            margin-bottom:14px;
            font-weight:600;
        }
        .site-footer ul li{
            margin-bottom:8px;
        }
        .site-footer ul li a{
            color:rgba(255,255,255,0.6);
            transition:color var(--transition-fast);
            font-size:0.85rem;
        }
        .site-footer ul li a:hover{
            color:var(--color-accent-light);
        }
        .site-footer .footer-bottom{
            max-width:1200px;
            margin:28px auto 0;
            padding-top:20px;
            border-top:1px solid rgba(255,255,255,0.1);
            text-align:center;
            font-size:0.8rem;
            color:rgba(255,255,255,0.4);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width:1200px){
            .category-grid{grid-template-columns:repeat(2,1fr);}
            .services-grid{grid-template-columns:repeat(2,1fr);}
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
            .cms-list{grid-template-columns:1fr;}
            .section{padding:48px 32px;}
            .hero-section{padding:60px 32px 70px;min-height:440px;}
            .hero-section h1{font-size:2.2rem;}
        }
        @media (max-width:1024px){
            .sidebar-nav{
                transform:translateX(-100%);
            }
            .sidebar-nav.open{
                transform:translateX(0);
            }
            .sidebar-overlay{
                display:block;
                pointer-events:none;
            }
            .sidebar-overlay.active{
                pointer-events:auto;
            }
            .mobile-header{
                display:flex;
            }
            .main-wrapper{
                margin-left:0;
                padding-top:var(--header-mobile-height);
            }
            .advantages-wrapper{
                grid-template-columns:1fr;
            }
            .site-footer .footer-grid{
                grid-template-columns:1fr 1fr;
            }
            .hero-section h1{font-size:1.9rem;}
            .section-header h2{font-size:1.65rem;}
        }
        @media (max-width:768px){
            .category-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
            .services-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
            .stats-grid{grid-template-columns:1fr 1fr;gap:20px;}
            .stat-item .stat-number{font-size:2.2rem;}
            .section{padding:40px 20px;}
            .hero-section{padding:48px 20px 56px;min-height:380px;}
            .hero-section h1{font-size:1.6rem;}
            .hero-section .hero-subtitle{font-size:0.95rem;}
            .btn{padding:11px 22px;font-size:0.88rem;}
            .site-footer .footer-grid{grid-template-columns:1fr;gap:28px;}
            .site-footer{padding:32px 20px;}
            .cms-item{flex-direction:column;gap:10px;}
            .cms-item .cms-thumb{width:100%;height:140px;}
            .section-header{margin-bottom:32px;}
            .section-header h2{font-size:1.45rem;}
            .cta-section h2{font-size:1.5rem;}
            .faq-item .faq-question{font-size:0.9rem;padding:15px 16px;}
            .faq-item .faq-answer{padding:0 16px;font-size:0.84rem;}
            .faq-item.open .faq-answer{padding:0 16px 14px;}
        }
        @media (max-width:520px){
            .hero-section h1{font-size:1.35rem;}
            .hero-section .hero-subtitle{font-size:0.85rem;}
            .hero-section{padding:36px 16px 44px;min-height:320px;}
            .hero-section .hero-actions{flex-direction:column;gap:10px;}
            .hero-section .hero-actions .btn{width:100%;justify-content:center;}
            .stats-grid{grid-template-columns:1fr 1fr;gap:16px;}
            .stat-item .stat-number{font-size:1.8rem;}
            .section{padding:32px 14px;}
            .section-header h2{font-size:1.3rem;}
            .btn{padding:10px 18px;font-size:0.82rem;}
            .category-card .card-img-wrap{height:160px;}
            .category-card .card-body{padding:16px;}
        }

/* roulang page: article */
:root {
            --sidebar-width: 260px;
            --sidebar-bg: #0f1a2e;
            --sidebar-hover: #18253d;
            --sidebar-active: #1a3052;
            --sidebar-text: #c5cdd8;
            --sidebar-text-active: #ffffff;
            --accent: #c9a96e;
            --accent-light: #dcc498;
            --accent-dark: #b0894f;
            --primary: #1a3c5e;
            --primary-light: #2a5580;
            --bg-body: #f4f5f7;
            --bg-card: #ffffff;
            --text-main: #1a1a2e;
            --text-secondary: #4a5568;
            --text-muted: #7b8698;
            --border: #e2e5ea;
            --border-light: #eef0f4;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 32px rgba(0,0,0,0.09), 0 4px 10px rgba(0,0,0,0.04);
            --shadow-xl: 0 18px 48px rgba(0,0,0,0.11), 0 6px 16px rgba(0,0,0,0.05);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        ul {
            list-style: none;
        }

        /* ============ SIDEBAR NAVIGATION ============ */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            overflow-x: hidden;
            border-right: 1px solid rgba(255,255,255,0.06);
            transition: transform var(--transition);
        }

        .sidebar-nav::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar-nav::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar-nav::-webkit-scrollbar-thumb {
            background: rgba(255,255,255,0.1);
            border-radius: 4px;
        }

        .nav-brand {
            padding: 22px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.07);
        }
        .nav-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1.08rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition);
        }
        .nav-brand a:hover {
            opacity: 0.88;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #1a1a2e;
            flex-shrink: 0;
        }
        .nav-menu {
            flex: 1;
            padding: 14px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            color: var(--sidebar-text);
            font-size: 0.94rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.01em;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            opacity: 0.75;
            transition: opacity var(--transition);
        }
        .nav-item:hover {
            background: var(--sidebar-hover);
            color: #e8ecf2;
        }
        .nav-item:hover i {
            opacity: 1;
        }
        .nav-item.active {
            background: var(--sidebar-active);
            color: var(--sidebar-text-active);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .nav-item.active i {
            opacity: 1;
            color: var(--accent);
        }
        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.07);
        }
        .footer-info {
            color: rgba(255,255,255,0.45);
            font-size: 0.8rem;
            line-height: 1.5;
        }

        /* ============ MAIN CONTENT AREA ============ */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .main-content {
            flex: 1;
            padding: 32px 36px 48px;
            max-width: 1100px;
            width: 100%;
            margin: 0 auto;
        }

        /* ============ MOBILE HEADER ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--sidebar-bg);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .mobile-header .mh-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            flex: 1;
        }
        .mobile-header .mh-brand .brand-icon {
            width: 30px;
            height: 30px;
            font-size: 0.8rem;
        }
        .hamburger-btn {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger-btn:hover {
            background: rgba(255,255,255,0.08);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }
        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding-bottom: 0;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb .sep {
            color: var(--border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
            pointer-events: none;
        }

        /* ============ ARTICLE DETAIL ============ */
        .article-container {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }
        .article-featured-image {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            display: block;
            background: #e8ecf0;
        }
        .article-body-wrap {
            padding: 32px 36px 40px;
        }
        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .article-meta-row .meta-cat {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: #f0f4f8;
            color: var(--primary);
            padding: 5px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.82rem;
            letter-spacing: 0.02em;
            transition: background var(--transition), color var(--transition);
        }
        .article-meta-row .meta-cat:hover {
            background: #dce6f0;
            color: var(--primary-light);
        }
        .article-meta-row .meta-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .article-meta-row .meta-date i {
            font-size: 0.8rem;
            opacity: 0.7;
        }
        .article-title {
            font-size: 1.85rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: 0.015em;
        }
        .article-body-content {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-main);
        }
        .article-body-content h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin: 32px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-light);
            color: var(--text-main);
            letter-spacing: 0.01em;
        }
        .article-body-content h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin: 26px 0 10px;
            color: var(--text-main);
        }
        .article-body-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: var(--text-secondary);
        }
        .article-body-content p {
            margin-bottom: 16px;
        }
        .article-body-content ul,
        .article-body-content ol {
            margin: 12px 0 18px 20px;
            padding-left: 8px;
        }
        .article-body-content ul {
            list-style: disc;
        }
        .article-body-content ol {
            list-style: decimal;
        }
        .article-body-content li {
            margin-bottom: 8px;
            padding-left: 4px;
        }
        .article-body-content img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body-content blockquote {
            border-left: 4px solid var(--accent);
            background: #fdfaf5;
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 0.96rem;
        }
        .article-body-content code {
            background: #f1f3f5;
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }
        .article-body-content pre {
            background: #1a1a2e;
            color: #e8ecf2;
            padding: 18px 20px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.88rem;
            line-height: 1.65;
        }
        .article-body-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body-content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
            transition: color var(--transition);
        }
        .article-body-content a:hover {
            color: var(--accent-dark);
        }
        .article-body-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.92rem;
        }
        .article-body-content th,
        .article-body-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body-content th {
            background: #f8f9fb;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .article-body-content hr {
            border: none;
            border-top: 1px solid var(--border-light);
            margin: 28px 0;
        }

        /* ============ NOT FOUND STATE ============ */
        .not-found-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 60px 40px;
            text-align: center;
        }
        .not-found-icon {
            width: 90px;
            height: 90px;
            background: #f0f4f8;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 2.2rem;
            color: var(--text-muted);
        }
        .not-found-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 0.98rem;
            line-height: 1.7;
        }
        .not-found-card .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1a1a2e;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: 25px;
            font-size: 0.95rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .not-found-card .btn-back:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ============ RELATED ARTICLES ============ */
        .related-section {
            margin-top: 40px;
        }
        .related-section .section-label {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.01em;
        }
        .related-section .section-label::before {
            content: '';
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
            display: block;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .related-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background: #e8ecf0;
        }
        .related-card-body {
            padding: 16px 18px 18px;
        }
        .related-card-body h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .related-card:hover .related-card-body h4 {
            color: var(--accent-dark);
        }
        .related-card-body .rc-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            margin-top: 44px;
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 38px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255,255,255,0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            font-size: 0.95rem;
            opacity: 0.85;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
            line-height: 1.6;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1a1a2e;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: 25px;
            font-size: 0.96rem;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .cta-section .btn-cta:hover {
            background: #fff;
            color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        /* ============ SITE FOOTER ============ */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border-light);
            padding: 40px 36px 24px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            max-width: 1100px;
            margin: 0 auto;
        }
        .footer-brand-name {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-main);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .site-footer h5 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .site-footer ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--accent-dark);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            margin-top: 24px;
            border-top: 1px solid var(--border-light);
            font-size: 0.82rem;
            color: var(--text-muted);
            max-width: 1100px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .sidebar-nav {
                transform: translateX(-100%);
                box-shadow: var(--shadow-xl);
            }
            .sidebar-nav.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 56px;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                padding: 24px 18px 36px;
            }
            .article-body-wrap {
                padding: 24px 20px 28px;
            }
            .article-title {
                font-size: 1.5rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .cta-section {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .main-content {
                padding: 16px 12px 28px;
            }
            .article-body-wrap {
                padding: 18px 14px 22px;
            }
            .article-title {
                font-size: 1.3rem;
            }
            .article-meta-row {
                gap: 8px;
                font-size: 0.8rem;
            }
            .article-body-content {
                font-size: 0.94rem;
            }
            .article-body-content h2 {
                font-size: 1.2rem;
            }
            .article-body-content h3 {
                font-size: 1.05rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card-img {
                height: 140px;
            }
            .cta-section h3 {
                font-size: 1.15rem;
            }
            .not-found-card {
                padding: 40px 20px;
            }
            .not-found-icon {
                width: 70px;
                height: 70px;
                font-size: 1.7rem;
            }
            .site-footer {
                padding: 28px 14px 18px;
            }
        }

        @media (min-width: 1400px) {
            .main-content {
                max-width: 1200px;
            }
            .article-body-wrap {
                padding: 40px 50px 48px;
            }
            .article-title {
                font-size: 2rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0f1f3d;
            --primary-light: #1a3059;
            --accent: #c9933d;
            --accent-light: #d4a855;
            --accent-dark: #a6782e;
            --bg: #f8f9fb;
            --bg-white: #ffffff;
            --bg-warm: #fefaf3;
            --text: #1a1a2e;
            --text-secondary: #4a4a5e;
            --text-muted: #7a7a8e;
            --border: #e2e4ea;
            --border-light: #eef0f5;
            --shadow-sm: 0 1px 3px rgba(15, 31, 61, 0.06);
            --shadow-md: 0 4px 16px rgba(15, 31, 61, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 31, 61, 0.12);
            --shadow-xl: 0 20px 48px rgba(15, 31, 61, 0.16);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --sidebar-width: 230px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        ul {
            list-style: none;
        }

        /* ==================== SIDEBAR NAVIGATION ==================== */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            color: #ffffff;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            box-shadow: var(--shadow-xl);
            transition: transform var(--transition);
        }

        .nav-brand {
            padding: 22px 20px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .nav-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-menu {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius);
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.78);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }

        .nav-item.active {
            background: var(--accent);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(201, 147, 61, 0.35);
        }

        .nav-footer {
            padding: 14px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.4;
        }

        /* ==================== MAIN CONTENT AREA ==================== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ==================== MOBILE HEADER ==================== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--primary);
            color: #ffffff;
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            box-shadow: var(--shadow-md);
        }

        .mobile-header .mobile-logo {
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }

        .mobile-header .mobile-logo .mini-brand-icon {
            width: 30px;
            height: 30px;
            background: var(--accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
        }

        .menu-toggle {
            background: none;
            color: #ffffff;
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }

        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ==================== HERO SECTION ==================== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 31, 61, 0.88) 0%, rgba(15, 31, 61, 0.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 72px 48px 64px;
            color: #ffffff;
            overflow: hidden;
            border-bottom: 3px solid var(--accent);
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 147, 61, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-breadcrumb {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

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

        .hero-breadcrumb span {
            margin: 0 6px;
        }

        .hero-breadcrumb .current {
            color: var(--accent-light);
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #ffffff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .category-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 600px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-accent {
            background: var(--accent);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(201, 147, 61, 0.4);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 22px rgba(201, 147, 61, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline-light:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .btn-text-accent {
            background: transparent;
            color: var(--accent-light);
            padding: 10px 18px;
            font-weight: 600;
        }

        .btn-text-accent:hover {
            color: #ffffff;
        }

        /* ==================== SECTION COMMON ==================== */
        .section {
            padding: 64px 48px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-header .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .container-narrow {
            max-width: 1100px;
            margin: 0 auto;
        }

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

        /* ==================== VALUE CARDS ==================== */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .value-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }

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

        .value-card .card-icon {
            width: 56px;
            height: 56px;
            background: var(--bg-warm);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.4rem;
            color: var(--accent);
        }

        .value-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .value-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ==================== STATS BAR ==================== */
        .stats-section {
            background: var(--primary);
            padding: 48px;
            color: #ffffff;
        }

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

        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-light);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .stat-item .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-light);
        }

        .stat-item .stat-label {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ==================== SCENARIO CARDS ==================== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .scenario-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .scenario-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .scenario-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .scenario-card .card-img-wrap .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 31, 61, 0.5) 0%, transparent 50%);
        }

        .scenario-card .card-body {
            padding: 20px 22px 24px;
        }

        .scenario-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--bg-warm);
            color: var(--accent-dark);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 14px;
        }

        /* ==================== CONTENT LIST (PHP RENDERED) ==================== */
        .content-list-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .content-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .content-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 22px 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .content-card .content-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .content-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .content-card h4 a:hover {
            color: var(--accent);
        }

        .content-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .content-card .read-more {
            display: inline-block;
            margin-top: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            transition: color var(--transition);
        }

        .content-card .read-more:hover {
            color: var(--accent-dark);
        }

        .content-card .read-more i {
            font-size: 0.7rem;
            margin-left: 4px;
        }

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

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-item .step-number {
            width: 48px;
            height: 48px;
            background: var(--accent);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }

        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ==================== FAQ ==================== */
        .faq-section {
            background: var(--bg-warm);
        }

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

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 22px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item .faq-question {
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .faq-item .faq-question i {
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding-top 0.3s ease;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ==================== CTA SECTION ==================== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 60px 48px;
            color: #ffffff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(201, 147, 61, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-section .btn-accent {
            font-size: 1rem;
            padding: 14px 34px;
        }

        /* ==================== FOOTER ==================== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 48px 28px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            max-width: 1100px;
            margin: 0 auto 32px;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.6;
        }

        .footer-grid h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

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

        .footer-grid ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 1100px;
            margin: 0 auto;
        }

        /* ==================== RESPONSIVE ==================== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 200px;
            }

            .category-hero {
                padding: 52px 32px 48px;
            }

            .category-hero h1 {
                font-size: 2rem;
            }

            .section {
                padding: 48px 32px;
            }

            .value-grid,
            .scenario-grid,
            .content-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

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

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

        @media (max-width: 768px) {
            .sidebar-nav {
                transform: translateX(-100%);
            }

            .sidebar-nav.open {
                transform: translateX(0);
            }

            .sidebar-overlay {
                display: block;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 56px;
            }

            .category-hero {
                padding: 40px 20px 36px;
            }

            .category-hero h1 {
                font-size: 1.65rem;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

            .section {
                padding: 40px 20px;
            }

            .section-header h2 {
                font-size: 1.55rem;
            }

            .value-grid,
            .scenario-grid,
            .content-list {
                grid-template-columns: 1fr;
            }

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

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

            .stat-item .stat-number {
                font-size: 1.8rem;
            }

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

            .cta-section {
                padding: 44px 20px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .stats-section {
                padding: 36px 20px;
            }

            .faq-item {
                padding: 16px 18px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
            }

            .section-header h2 {
                font-size: 1.35rem;
            }

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

            .stat-item .stat-number {
                font-size: 1.5rem;
            }

            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #2c5282;
            --color-accent: #c8963e;
            --color-accent-light: #d4a853;
            --color-accent-glow: #f0d78c;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-surface-alt: #edf2f7;
            --color-text: #1a202c;
            --color-text-secondary: #4a5568;
            --color-text-muted: #718096;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --color-success: #38a169;
            --color-warning: #d69e2e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px 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);
            --sidebar-width: 250px;
            --sidebar-collapsed: 0px;
            --header-mobile-height: 56px;
            --transition-fast: 0.18s ease;
            --transition-base: 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', -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
            display: flex;
            flex-direction: row;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-top: 0;
        }

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

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-primary);
            color: #ffffff;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 24px rgba(0, 0, 0, 0.15);
            transition: transform var(--transition-slow);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 0;
        }
        .nav-brand {
            padding: 22px 20px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            flex-shrink: 0;
        }
        .nav-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
        }
        .nav-brand a:hover {
            opacity: 0.85;
        }
        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: var(--radius-md);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-menu {
            flex: 1;
            padding: 14px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            transform: translateX(3px);
        }
        .nav-item.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
        }
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background: var(--color-accent);
            border-radius: 0 3px 3px 0;
        }
        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            flex-shrink: 0;
        }
        .footer-info {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.5;
        }

        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-slow);
            width: calc(100% - var(--sidebar-width));
        }

        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-primary);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }
        .mobile-header .hamburger {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.4rem;
            padding: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-header .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-header .mobile-logo {
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            margin-left: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .mobile-logo .brand-icon-sm {
            width: 30px;
            height: 30px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }
        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                width: 270px;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .main-wrapper {
                margin-left: 0;
                width: 100%;
                padding-top: var(--header-mobile-height);
            }
            .mobile-header {
                display: flex;
            }
        }

        @media (max-width: 520px) {
            .sidebar {
                width: 85vw;
                max-width: 300px;
            }
        }

        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 54, 93, 0.9) 0%, rgba(26, 54, 93, 0.75) 50%, rgba(26, 54, 93, 0.85) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #ffffff;
            padding: 80px 48px 72px;
            min-height: 420px;
            display: flex;
            align-items: center;
            border-bottom: 4px solid var(--color-accent);
            position: relative;
            overflow: hidden;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            transform: translate(30%, 30%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #1a202c;
            font-weight: 700;
            font-size: 0.82rem;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            text-transform: uppercase;
        }
        .hero-section h1 {
            font-size: 2.7rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            line-height: 1.25;
        }
        .hero-section .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 600px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #1a202c;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.35);
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 150, 62, 0.45);
            color: #1a202c;
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.3);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: 28px;
            font-size: 0.95rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .btn-outline-light:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }
        .btn-outline-light:active {
            background: rgba(255, 255, 255, 0.15);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 50px 20px 44px;
                min-height: auto;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .hero-section .hero-subtitle {
                font-size: 1rem;
            }
            .btn-accent,
            .btn-outline-light {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.55rem;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .btn-accent,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }

        .section-block {
            padding: 64px 48px;
        }
        .section-block-alt {
            background: var(--color-surface-alt);
            padding: 64px 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 1.75;
            margin-bottom: 36px;
        }
        @media (max-width: 768px) {
            .section-block,
            .section-block-alt {
                padding: 42px 20px;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card-feature {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }
        .card-feature:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-accent);
        }
        .card-feature .card-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card-feature .icon-blue {
            background: #ebf4ff;
            color: var(--color-primary-light);
        }
        .card-feature .icon-gold {
            background: #fef6e8;
            color: var(--color-accent);
        }
        .card-feature .icon-green {
            background: #e6f7ee;
            color: var(--color-success);
        }
        .card-feature h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .card-feature p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        .card-image-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }
        .card-image-block:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card-image-block img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .card-image-block .card-body {
            padding: 20px 18px;
        }
        .card-image-block h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .card-image-block p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            box-shadow: var(--shadow-xs);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
            transform: translateX(3px);
        }
        .step-number {
            counter-increment: step-counter;
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-item:nth-child(even) .step-number {
            background: var(--color-accent);
        }
        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            text-align: center;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 16px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            color: var(--color-accent);
            font-size: 1rem;
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item.open {
            border-color: var(--color-accent);
        }

        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #0f2840 100%);
            color: #ffffff;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            color: #ffffff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-accent {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 14px 34px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 44px 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        .site-footer {
            background: #121e2d;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 48px 28px;
            flex-shrink: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 28px;
        }
        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 400px;
        }
        .site-footer h5 {
            color: #ffffff;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li 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;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 36px 20px 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --sidebar-width: 250px;
            --sidebar-bg: #0d1b2a;
            --sidebar-text: #b0bec5;
            --sidebar-hover-bg: #152b40;
            --sidebar-active-color: #d4a853;
            --sidebar-active-bg: rgba(212, 168, 83, 0.08);
            --brand-gold: #c9a96e;
            --brand-gold-light: #dfc28d;
            --brand-dark: #0d1b2a;
            --brand-navy: #13293d;
            --body-bg: #f4f5f7;
            --card-bg: #ffffff;
            --text-primary: #1a1d28;
            --text-secondary: #4a5568;
            --text-muted: #718096;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e0;
            --accent-blue: #1e4d7b;
            --accent-blue-light: #2c6ba0;
            --accent-teal: #0d9488;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 32px rgba(0, 0, 0, 0.10), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 18px 48px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Menlo', monospace;
            --content-max-width: 1100px;
            --section-gap: 64px;
        }

        *,
        *::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: 1.68;
            color: var(--text-primary);
            background-color: var(--body-bg);
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--brand-gold);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-gold);
            outline-offset: 3px;
        }

        ul {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 { font-size: clamp(2rem, 3.5vw, 2.8rem); }
        h2 { font-size: clamp(1.6rem, 2.6vw, 2rem); }
        h3 { font-size: clamp(1.2rem, 1.8vw, 1.45rem); }
        h4 { font-size: 1.1rem; }

        /* ========== SIDEBAR NAVIGATION ========== */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition-slow), box-shadow var(--transition-base);
            box-shadow: 2px 0 24px rgba(0, 0, 0, 0.18);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .nav-brand {
            padding: 28px 22px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .nav-brand a:hover {
            color: var(--brand-gold-light);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--brand-gold) 0%, #b8933f 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-menu {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--sidebar-text);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.015em;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            opacity: 0.8;
            transition: opacity var(--transition-fast);
        }
        .nav-item:hover {
            background: var(--sidebar-hover-bg);
            color: #e8eef3;
        }
        .nav-item:hover i {
            opacity: 1;
        }
        .nav-item.active {
            background: var(--sidebar-active-bg);
            color: var(--sidebar-active-color);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--sidebar-active-color);
        }
        .nav-item.active i {
            opacity: 1;
            color: var(--sidebar-active-color);
        }

        .nav-footer {
            padding: 18px 22px 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.78rem;
            color: rgba(176, 190, 197, 0.7);
            line-height: 1.5;
        }
        .footer-info {
            font-size: 0.78rem;
            color: rgba(176, 190, 197, 0.65);
        }

        /* Mobile hamburger */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--sidebar-bg);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .mobile-header .mobile-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
        }
        .mobile-header .mobile-brand .brand-icon {
            width: 30px;
            height: 30px;
            font-size: 0.85rem;
            border-radius: 4px;
            background: linear-gradient(135deg, var(--brand-gold) 0%, #b8933f 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
        }
        .hamburger-btn {
            margin-left: auto;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            transition: opacity var(--transition-base);
        }
        .sidebar-overlay.active {
            display: block;
        }

        /* ========== MAIN CONTENT AREA ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            background: var(--brand-navy) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 80px 40px 70px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.82) 0%, rgba(13, 27, 42, 0.7) 40%, rgba(19, 41, 61, 0.85) 100%);
            z-index: 0;
        }
        .page-hero .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            background: rgba(212, 168, 83, 0.18);
            border: 1px solid rgba(212, 168, 83, 0.4);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--brand-gold-light);
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .page-hero h1 {
            color: #fff;
            font-size: clamp(2rem, 3.8vw, 2.9rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }
        .page-hero .hero-subtitle {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 13px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition-base);
            letter-spacing: 0.025em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--brand-gold);
            color: #1a1d28;
            box-shadow: 0 4px 14px rgba(201, 169, 110, 0.35);
        }
        .btn-primary:hover {
            background: #dbb978;
            box-shadow: 0 6px 20px rgba(201, 169, 110, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(201, 169, 110, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 32px;
        }
        .section-inner {
            max-width: var(--content-max-width);
            margin: 0 auto;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-header .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--brand-gold);
            margin-bottom: 8px;
        }

        /* ========== SERVICE CARDS ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 32px 26px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-gold) 0%, #e0c88e 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(30, 77, 123, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-blue);
            margin-bottom: 18px;
            transition: all var(--transition-base);
        }
        .service-card:hover .card-icon {
            background: var(--accent-blue);
            color: #fff;
        }
        .service-card h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .service-card p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.6;
        }

        /* ========== COVERAGE AREAS ========== */
        .coverage-section {
            background: #fff;
        }
        .coverage-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .coverage-image-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            position: relative;
        }
        .coverage-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .coverage-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .coverage-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .coverage-item:last-child {
            border-bottom: none;
        }
        .coverage-item .ci-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand-gold);
            flex-shrink: 0;
            margin-top: 5px;
        }
        .coverage-item .ci-content h4 {
            font-size: 1rem;
            margin-bottom: 3px;
            font-weight: 600;
        }
        .coverage-item .ci-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== PROCESS STEPS ========== */
        .process-section {
            background: var(--body-bg);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 24px 16px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--brand-navy);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            position: relative;
            z-index: 2;
        }
        .process-step h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .process-connector {
            display: none;
        }

        /* ========== AUDIENCE / SCENARIOS ========== */
        .audience-section {
            background: #fff;
        }
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .audience-card {
            text-align: center;
            padding: 30px 18px 24px;
            background: var(--body-bg);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .audience-card:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-md);
            background: #fff;
        }
        .audience-card .aud-icon {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--accent-blue);
        }
        .audience-card h4 {
            font-size: 0.98rem;
            margin-bottom: 6px;
        }
        .audience-card p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--body-bg);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: #fff;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: #fafbfc;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--brand-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: var(--brand-navy);
            color: #fff;
            text-align: center;
            padding: 56px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(212, 168, 83, 0.08);
            pointer-events: none;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(212, 168, 83, 0.06);
            pointer-events: none;
        }
        .cta-banner .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-banner h2 {
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 24px;
            font-size: 1.02rem;
        }
        .cta-banner .btn-primary {
            font-size: 1rem;
            padding: 15px 36px;
        }

        /* ========== HIGHLIGHTS / CMS BLOCK ========== */
        .highlights-section {
            background: #fff;
        }
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .highlight-card {
            background: var(--body-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .highlight-card .hl-img {
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .highlight-card .hl-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .highlight-card:hover .hl-img img {
            transform: scale(1.05);
        }
        .highlight-card .hl-body {
            padding: 18px 20px 20px;
        }
        .highlight-card .hl-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-blue);
            background: rgba(30, 77, 123, 0.07);
            padding: 4px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }
        .highlight-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .highlight-card .hl-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0d1117;
            color: #c0c8d2;
            padding: 48px 32px 28px;
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-grid {
            max-width: var(--content-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-desc {
            color: #8899a6;
            font-size: 0.88rem;
            line-height: 1.6;
            max-width: 400px;
        }
        .site-footer h5 {
            color: #e0e6ec;
            font-size: 0.92rem;
            margin-bottom: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .site-footer ul {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .site-footer ul li a {
            color: #8899a6;
            font-size: 0.87rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: var(--brand-gold-light);
        }
        .footer-bottom {
            max-width: var(--content-max-width);
            margin: 28px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.8rem;
            color: #667788;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 210px;
                --section-gap: 48px;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .coverage-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .page-hero {
                padding: 60px 28px 50px;
            }
            .section {
                padding: var(--section-gap) 22px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 240px;
                --section-gap: 40px;
            }
            .sidebar-nav {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar-nav.open {
                transform: translateX(0);
                box-shadow: 4px 0 28px rgba(0, 0, 0, 0.4);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            body {
                flex-direction: column;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .audience-grid {
                grid-template-columns: 1fr 1fr;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-desc {
                max-width: 100%;
            }
            .page-hero {
                padding: 50px 18px 40px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .section {
                padding: var(--section-gap) 16px;
            }
            .coverage-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 1.45rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .service-card {
                padding: 22px 16px 20px;
            }
            .nav-brand a {
                font-size: 1rem;
            }
        }