/* roulang page: index */
:root{
            --primary:#0B3C25;
            --primary-deep:#062315;
            --accent:#FFCC00;
            --accent-lime:#32CD32;
            --surface:#ffffff;
            --surface-soft:#F1F9F4;
            --text:#17301F;
            --text-soft:#4E6B57;
            --text-light:#E9F7EE;
            --border:#DDEBE2;
            --danger:#D32F2F;
            --radius-sm:12px;
            --radius-md:20px;
            --radius-lg:32px;
            --shadow-sm:0 4px 12px rgba(6,35,21,.06);
            --shadow-md:0 12px 28px rgba(6,35,21,.10);
            --shadow-lg:0 24px 48px rgba(6,35,21,.16);
            --font-body:'Segoe UI',-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;
            --transition:all .22s ease;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            font-family:var(--font-body);
            line-height:1.6;
            color:var(--text);
            background:var(--surface);
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
        }
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:var(--transition)}
        button,input,select,textarea{font-family:inherit}
        .container{max-width:1200px;margin:0 auto;padding:0 24px}
        .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
        
        /* Navigation */
        .site-header{
            background:rgba(6,35,21,.96);
            backdrop-filter:blur(12px);
            position:sticky;top:0;z-index:100;
            border-bottom:1px solid rgba(255,204,0,.18);
            box-shadow:0 6px 24px rgba(6,35,21,.14);
        }
        .nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:20px;flex-wrap:wrap;padding:14px 24px;max-width:1280px;margin:0 auto}
        .brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:700;font-size:1.28rem;line-height:1.25;letter-spacing:-.01em}
        .brand i{color:var(--accent);font-size:1.7rem}
        .brand span{display:inline-block;max-width:320px}
        .nav-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
        .nav-links a{
            color:#E9F7EE;font-weight:600;font-size:.95rem;
            padding:10px 16px;border-radius:999px;
            border:1px solid transparent;transition:var(--transition);
            display:inline-flex;align-items:center;gap:8px;
        }
        .nav-links a:hover{color:var(--accent);background:rgba(255,204,0,.08);border-color:rgba(255,204,0,.25)}
        .nav-links a.active{background:var(--accent);color:var(--primary-deep);border-color:var(--accent)}
        .nav-cta{display:flex;align-items:center;gap:10px}
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            padding:12px 24px;border-radius:999px;font-weight:700;font-size:.98rem;
            border:2px solid transparent;cursor:pointer;transition:var(--transition);
            text-align:center;line-height:1.2;
        }
        .btn-outline-light{color:#fff;border-color:rgba(255,255,255,.4);background:transparent}
        .btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
        .btn-gold{background:var(--accent);color:var(--primary-deep);border-color:var(--accent)}
        .btn-gold:hover{background:#FFD633;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,204,0,.35)}
        .btn-green{background:var(--primary);color:#fff;border-color:var(--primary)}
        .btn-green:hover{background:var(--primary-deep);transform:translateY(-2px)}
        .btn-lg{padding:15px 32px;font-size:1.05rem}
        .btn-sm{padding:8px 16px;font-size:.88rem}
        .nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.8rem;cursor:pointer;padding:6px}
        
        /* Hero */
        .hero{
            position:relative;
            background:linear-gradient(135deg,var(--primary-deep) 0%,var(--primary) 58%,#0F5232 100%);
            color:#fff;
            padding:80px 0 90px;
            overflow:hidden;
        }
        .hero::before{
            content:'';position:absolute;inset:0;
            background-image:url('/assets/images/backpic/back-1.jpg');
            background-size:cover;background-position:center;
            opacity:.14;mix-blend-mode:luminosity;
        }
        .hero::after{
            content:'';position:absolute;top:-120px;right:-80px;width:460px;height:460px;border-radius:50%;
            background:radial-gradient(circle,rgba(255,204,0,.22),transparent 68%);
        }
        .hero-content{position:relative;z-index:2;max-width:780px}
        .hero-badge{
            display:inline-flex;align-items:center;gap:8px;
            background:rgba(255,204,0,.14);color:var(--accent);
            border:1px solid rgba(255,204,0,.35);padding:8px 18px;border-radius:999px;
            font-weight:700;font-size:.88rem;letter-spacing:.02em;margin-bottom:24px;
        }
        .hero h1{
            font-size:clamp(2.1rem,4.6vw,3.6rem);
            line-height:1.18;font-weight:800;letter-spacing:-.02em;margin-bottom:22px;
        }
        .hero h1 .highlight{color:var(--accent);border-bottom:4px solid var(--accent);padding-bottom:2px}
        .hero-desc{
            font-size:1.12rem;line-height:1.7;color:rgba(233,247,238,.92);
            max-width:680px;margin-bottom:32px;
        }
        .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
        .hero-stats{display:flex;gap:28px;flex-wrap:wrap}
        .hero-stat{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700}
        .hero-stat i{font-size:1.5rem;color:var(--accent)}
        .hero-stat strong{font-size:1.4rem;display:block;line-height:1.1}
        .hero-stat small{font-size:.82rem;font-weight:500;color:rgba(233,247,238,.8)}
        
        /* Sections */
        .section{padding:72px 0}
        .section-alt{background:var(--surface-soft)}
        .section-head{max-width:700px;margin-bottom:40px}
        .section-tag{
            display:inline-flex;align-items:center;gap:8px;
            color:var(--primary);font-weight:700;font-size:.85rem;
            text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px;
        }
        .section-tag::before{content:'';width:28px;height:3px;background:var(--accent);border-radius:3px}
        .section-title{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:800;line-height:1.25;letter-spacing:-.02em;color:var(--primary-deep);margin-bottom:16px}
        .section-desc{font-size:1.04rem;color:var(--text-soft);line-height:1.7;max-width:640px}
        
        /* Coupon Hero Panel */
        .coupon-stage{
            background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
            border-radius:var(--radius-lg);padding:28px;backdrop-filter:blur(8px);
            display:flex;gap:26px;align-items:center;flex-wrap:wrap;
        }
        .coupon-main{
            flex:1;min-width:280px;background:#fff;border-radius:var(--radius-md);
            padding:26px;box-shadow:var(--shadow-lg);
            border:3px dashed var(--accent);position:relative;
        }
        .coupon-main .coupon-label{color:var(--text-soft);font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
        .coupon-main h3{color:var(--primary-deep);font-size:1.5rem;font-weight:800;margin:6px 0 12px}
        .coupon-main p{color:var(--text-soft);font-size:.95rem;margin-bottom:18px}
        .coupon-code{
            display:inline-flex;align-items:center;gap:10px;background:var(--surface-soft);
            border:1px solid var(--border);padding:10px 18px;border-radius:12px;
            font-weight:700;color:var(--primary);letter-spacing:.05em;
        }
        .coupon-side{flex:0 0 220px;text-align:center}
        .coupon-side img{border-radius:var(--radius-md);box-shadow:var(--shadow-md);width:100%;object-fit:cover}
        
        /* Info cards */
        .info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .info-card{
            background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
            padding:28px;box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden;
        }
        .info-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--accent),var(--accent-lime));opacity:0;transition:var(--transition)}
        .info-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(255,204,0,.4)}
        .info-card:hover::before{opacity:1}
        .info-icon{
            width:56px;height:56px;border-radius:16px;background:var(--surface-soft);
            display:flex;align-items:center;justify-content:center;margin-bottom:20px;
            color:var(--primary);font-size:1.5rem;border:1px solid var(--border);
        }
        .info-card h3{font-size:1.22rem;font-weight:800;color:var(--primary-deep);margin-bottom:10px}
        .info-card p{font-size:.95rem;color:var(--text-soft);line-height:1.65;margin-bottom:0}
        
        /* Success strip */
        .success-strip{
            background:linear-gradient(135deg,var(--primary) 0%,#0A4D2E 100%);
            border-radius:var(--radius-lg);padding:38px 32px;color:#fff;
            display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
        }
        .success-strip .text h3{font-size:1.5rem;font-weight:800;margin-bottom:8px}
        .success-strip .text p{color:rgba(233,247,238,.85);margin-bottom:0}
        .success-metrics{display:flex;gap:32px;flex-wrap:wrap}
        .metric{text-align:center;min-width:100px}
        .metric strong{display:block;font-size:2rem;font-weight:800;color:var(--accent);line-height:1.1}
        .metric span{font-size:.85rem;color:rgba(233,247,238,.8)}
        
        /* Form */
        .lead-form-card{
            background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
            padding:36px;border:1px solid var(--border);
        }
        .lead-form-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
        .lead-form-card h3{font-size:1.55rem;font-weight:800;color:var(--primary-deep);margin-bottom:10px}
        .lead-form-card p{color:var(--text-soft);margin-bottom:24px}
        .form-input{
            width:100%;padding:14px 18px;border-radius:14px;border:1px solid var(--border);
            font-size:.98rem;background:var(--surface-soft);transition:var(--transition);
            color:var(--text);
        }
        .form-input:focus{outline:2px solid var(--accent);outline-offset:2px;background:#fff;border-color:var(--primary)}
        .lead-form-card .privacy-note{
            font-size:.82rem;color:var(--text-soft);display:flex;align-items:center;gap:8px;margin-top:16px;
        }
        .lead-form-side{text-align:center}
        .lead-form-side img{border-radius:var(--radius-md);box-shadow:var(--shadow-md);margin-bottom:18px;width:100%;object-fit:cover}
        
        /* News list */
        .news-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:36px;align-items:start}
        .news-list{list-style:none;display:flex;flex-direction:column;gap:14px}
        .news-list li{
            background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
            padding:18px 20px;transition:var(--transition);box-shadow:var(--shadow-sm);
        }
        .news-list li:hover{border-color:var(--accent);transform:translateX(4px);box-shadow:var(--shadow-md)}
        .news-list a{display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
        .news-title{font-weight:700;color:var(--primary-deep);font-size:1rem;flex:1;min-width:200px}
        .news-meta{font-size:.82rem;color:var(--text-soft);white-space:nowrap}
        .news-featured{
            background:var(--primary-deep);border-radius:var(--radius-md);overflow:hidden;
            color:#fff;box-shadow:var(--shadow-md);
        }
        .news-featured img{width:100%;height:200px;object-fit:cover;border-bottom:2px solid var(--accent)}
        .news-featured-body{padding:22px}
        .news-featured-body h4{font-size:1.15rem;font-weight:800;margin-bottom:8px;color:#fff}
        .news-featured-body p{font-size:.88rem;color:rgba(233,247,238,.8);margin-bottom:12px}
        
        /* Changelog */
        .changelog{list-style:none;display:flex;flex-direction:column;gap:16px}
        .changelog li{
            background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
            padding:20px 24px;box-shadow:var(--shadow-sm);display:flex;gap:18px;align-items:flex-start;
            transition:var(--transition);
        }
        .changelog li:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
        .changelog .version{
            background:var(--primary);color:#fff;font-weight:700;font-size:.82rem;
            padding:6px 14px;border-radius:999px;white-space:nowrap;
        }
        .changelog h4{font-size:1.05rem;font-weight:800;color:var(--primary-deep);margin-bottom:6px}
        .changelog p{font-size:.92rem;color:var(--text-soft);margin-bottom:0}
        
        /* Timeline */
        .timeline{position:relative;padding-left:32px}
        .timeline::before{content:'';position:absolute;left:10px;top:6px;bottom:6px;width:3px;background:linear-gradient(var(--accent),var(--accent-lime));border-radius:3px}
        .timeline-item{position:relative;margin-bottom:28px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:22px 24px;box-shadow:var(--shadow-sm);transition:var(--transition)}
        .timeline-item:hover{box-shadow:var(--shadow-md);border-color:rgba(255,204,0,.45)}
        .timeline-item::before{
            content:'';position:absolute;left:-26px;top:24px;width:14px;height:14px;border-radius:50%;
            background:var(--accent);border:3px solid var(--surface);box-shadow:0 0 0 3px var(--primary);
        }
        .timeline-time{font-size:.82rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}
        .timeline-item h4{font-size:1.12rem;font-weight:800;color:var(--primary-deep);margin-bottom:6px}
        .timeline-item p{font-size:.92rem;color:var(--text-soft);margin-bottom:0}
        
        /* Steps */
        .steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .step-card{
            background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
            padding:26px 20px;text-align:left;box-shadow:var(--shadow-sm);transition:var(--transition);
        }
        .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
        .step-number{
            width:44px;height:44px;border-radius:50%;background:var(--accent);color:var(--primary-deep);
            font-weight:800;font-size:1.2rem;display:flex;align-items:center;justify-content:center;
            margin-bottom:16px;
        }
        .step-card h4{font-size:1.08rem;font-weight:800;color:var(--primary-deep);margin-bottom:8px}
        .step-card p{font-size:.9rem;color:var(--text-soft);margin-bottom:0}
        
        /* FAQ */
        .faq-list{max-width:820px;display:flex;flex-direction:column;gap:14px}
        .faq-item{
            background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
            padding:22px 26px;box-shadow:var(--shadow-sm);transition:var(--transition);
        }
        .faq-item:hover{border-color:rgba(255,204,0,.45)}
        .faq-question{
            font-weight:800;color:var(--primary-deep);font-size:1.05rem;margin-bottom:8px;
            display:flex;align-items:center;gap:12px;
        }
        .faq-question i{color:var(--accent);font-size:1.1rem}
        .faq-answer{color:var(--text-soft);font-size:.96rem;line-height:1.7;padding-left:26px}
        
        /* Footer */
        .site-footer{
            background:var(--primary-deep);color:#E9F7EE;padding:64px 0 28px;
            border-top:4px solid var(--accent);
        }
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:42px}
        .footer-brand h3{color:#fff;font-size:1.3rem;font-weight:800;margin-bottom:12px}
        .footer-brand p{color:rgba(233,247,238,.75);font-size:.92rem;line-height:1.7}
        .footer-col h4{color:var(--accent);font-size:1rem;font-weight:700;margin-bottom:16px}
        .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
        .footer-col a{color:rgba(233,247,238,.8);font-size:.92rem;transition:var(--transition)}
        .footer-col a:hover{color:var(--accent);padding-left:4px}
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
            display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
            font-size:.85rem;color:rgba(233,247,238,.65);
        }
        
        /* FAB */
        .fab{
            position:fixed;left:16px;bottom:96px;z-index:90;
            width:56px;height:56px;border-radius:50%;
            background:var(--primary-deep);border:3px solid var(--accent);
            display:flex;align-items:center;justify-content:center;
            color:var(--accent);font-size:1.5rem;cursor:pointer;
            box-shadow:0 4px 20px rgba(255,204,0,.3);
            transition:var(--transition);animation:float 3s ease-in-out infinite;
        }
        .fab:hover{transform:scale(1.1);box-shadow:0 8px 28px rgba(255,204,0,.5)}
        .fab:active{transform:scale(.95)}
        .fab .badge-dot{
            position:absolute;top:-3px;right:-3px;width:14px;height:14px;border-radius:50%;
            background:var(--danger);border:2px solid #fff;animation:blink 1.4s infinite;
        }
        @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
        @keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
        
        /* Responsive */
        @media (max-width:1024px){
            .info-grid{grid-template-columns:repeat(2,1fr)}
            .steps-grid{grid-template-columns:repeat(2,1fr)}
            .footer-grid{grid-template-columns:1fr 1fr}
            .lead-form-grid{grid-template-columns:1fr}
        }
        @media (max-width:768px){
            .nav-toggle{display:block}
            .nav-links{
                display:none;position:absolute;top:76px;left:0;right:0;
                background:var(--primary-deep);padding:20px 24px;flex-direction:column;
                align-items:flex-start;gap:4px;border-bottom:3px solid var(--accent);
                box-shadow:var(--shadow-lg);
            }
            .nav-links.open{display:flex}
            .nav-links a{width:100%}
            .nav-cta .btn-outline-light{display:none}
            .hero{padding:56px 0 68px}
            .coupon-stage{flex-direction:column}
            .coupon-side{flex:0 0 auto;width:100%}
            .coupon-side img{height:180px;object-fit:cover}
            .news-layout{grid-template-columns:1fr}
            .success-strip{flex-direction:column;align-items:flex-start}
            .info-grid{grid-template-columns:1fr}
            .steps-grid{grid-template-columns:1fr}
            .footer-grid{grid-template-columns:1fr}
            .section{padding:48px 0}
        }
        @media (max-width:520px){
            .container{padding:0 16px}
            .nav-wrap{padding:12px 16px}
            .brand{font-size:1rem}
            .brand span{max-width:200px}
            .hero-stats{gap:18px}
            .hero-stat strong{font-size:1.15rem}
            .success-metrics{gap:20px}
            .lead-form-card{padding:24px}
        }

/* roulang page: category1 */
:root {
            --bg-dark: #0c1622;
            --bg-deep: #071019;
            --bg-card: #0f1d2b;
            --bg-card-soft: #142534;
            --accent-cyan: #2dd4bf;
            --accent-blue: #38bdf8;
            --accent-gold: #f5c76a;
            --accent-teal: #14b8a6;
            --text-primary: #eef7fb;
            --text-secondary: #b8ccd9;
            --text-muted: #7f95a8;
            --border-soft: rgba(45, 212, 191, 0.18);
            --border-glow: rgba(45, 212, 191, 0.45);
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(45, 212, 191, 0.18);
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: all 0.28s cubic-bezier(0.25, 0.8, 0.3, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #5eead4;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(7, 16, 25, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-soft);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 14px 24px;
            max-width: 1280px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .brand i {
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 12px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a i {
            font-size: 0.85rem;
            color: var(--accent-cyan);
        }
        .nav-links a:hover {
            background: rgba(45, 212, 191, 0.1);
            color: var(--text-primary);
        }
        .nav-links a.active {
            background: rgba(45, 212, 191, 0.16);
            color: var(--accent-cyan);
            border: 1px solid var(--border-glow);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            text-align: center;
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(238, 247, 251, 0.3);
            color: var(--text-primary);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--text-primary);
            color: #fff;
        }
        .btn-gold {
            background: linear-gradient(135deg, #f5c76a, #e0a83e);
            color: #0c1622;
            box-shadow: 0 4px 14px rgba(245, 199, 106, 0.25);
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 199, 106, 0.38);
            color: #071019;
        }
        .btn-sm {
            padding: 8px 14px;
            font-size: 0.82rem;
        }
        .nav-toggle {
            display: none;
            background: rgba(45, 212, 191, 0.15);
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            cursor: pointer;
        }
        /* Hero Section */
        .hero-cat {
            background: linear-gradient(135deg, #071019 0%, #0c1622 55%, #0b1f2a 100%);
            border-bottom: 1px solid var(--border-soft);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .hero-cat::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(45, 212, 191, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-cat-grid {
            display: flex;
            align-items: center;
            gap: 40px;
            position: relative;
            z-index: 2;
        }
        .hero-cat-copy {
            flex: 1.1;
        }
        .hero-cat-visual {
            flex: 0.9;
            min-width: 300px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .hero-cat h1 {
            font-size: clamp(2rem, 4.2vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: #fff;
        }
        .hero-cat h1 span {
            color: var(--accent-cyan);
        }
        .hero-cat p {
            font-size: 1.08rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 26px;
            line-height: 1.65;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-actions .btn {
            font-size: 1rem;
            padding: 12px 24px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat strong {
            display: block;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat span {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .hero-cat-visual img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }
        /* Section base */
        .section {
            padding: 64px 0;
        }
        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-header .eyebrow {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 750;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        /* Cards */
        .card-info {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card-info:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(45, 212, 191, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .card-info h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .card-info p {
            font-size: 0.94rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .card-tag {
            display: inline-block;
            background: rgba(245, 199, 106, 0.15);
            color: var(--accent-gold);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        /* Feature split */
        .split-block {
            display: flex;
            align-items: center;
            gap: 36px;
            background: var(--bg-card-soft);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 28px;
            transition: var(--transition);
        }
        .split-block:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .split-block img {
            width: 140px;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-md);
            flex-shrink: 0;
            border: 1px solid var(--border-soft);
        }
        .split-copy h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .split-copy p {
            color: var(--text-secondary);
            font-size: 0.96rem;
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* Process steps */
        .steps-flow {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            border-left: 3px solid var(--accent-cyan);
            transition: var(--transition);
        }
        .step-item:hover {
            border-left-color: var(--accent-gold);
            background: var(--bg-card-soft);
        }
        .step-num {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(45, 212, 191, 0.18);
            color: var(--accent-cyan);
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.95rem;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-soft);
        }
        .faq-question {
            font-size: 1.06rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-question i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }
        .faq-answer {
            font-size: 0.94rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }
        /* CTA */
        .cta-band {
            background: linear-gradient(135deg, #0f2533 0%, #0c1622 55%, #112633 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-card);
        }
        .cta-band h3 {
            font-size: 1.8rem;
            font-weight: 750;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .cta-band p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 0;
            max-width: 560px;
        }
        .cta-band .btn {
            font-size: 1rem;
            padding: 14px 28px;
            white-space: nowrap;
        }
        /* Footer */
        .site-footer {
            background: #050d13;
            border-top: 1px solid var(--border-soft);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border-soft);
            padding-top: 18px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 18px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 16, 25, 0.88);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 18px rgba(45, 212, 191, 0.45);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
            animation: floatBreath 2.8s infinite ease-in-out;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(45, 212, 191, 0.7);
        }
        .fab-left:active {
            transform: scale(0.94);
        }
        .fab-notify {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #ff4d6d;
            border-radius: 50%;
            border: 2px solid #071019;
            animation: blinkDot 1.6s infinite;
        }
        @keyframes floatBreath {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-wrap {
                flex-wrap: nowrap;
                padding: 12px 16px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                background: rgba(7, 16, 25, 0.98);
                border-radius: 16px;
                padding: 10px;
                border: 1px solid var(--border-soft);
                margin-top: 10px;
                position: absolute;
                top: 64px;
                left: 16px;
                right: 16px;
                z-index: 100;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: flex;
                gap: 6px;
            }
            .nav-cta .btn-outline-light,
            .nav-cta .btn-gold {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .hero-cat-grid {
                flex-direction: column;
                gap: 28px;
            }
            .hero-cat-visual {
                min-width: 100%;
            }
            .grid-2, .grid-3 {
                grid-template-columns: 1fr;
            }
            .split-block {
                flex-direction: column;
                align-items: flex-start;
            }
            .split-block img {
                width: 100%;
                height: auto;
            }
            .cta-band {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-cat h1 {
                font-size: 1.9rem;
            }
            .section {
                padding: 44px 0;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0A2E1C;
            --primary-2: #123E25;
            --accent: #FFD700;
            --accent-2: #D32F2F;
            --text: #FFFFFF;
            --text-soft: #D1F2EB;
            --border: rgba(255, 215, 0, 0.35);
            --radius: 18px;
            --shadow: 0 18px 45px rgba(0, 0, 0, 0.25);
            --shadow-sm: 0 8px 22px rgba(0, 0, 0, 0.18);
            --transition: all 0.25s ease;
            --bg-body: #f6fbf8;
            --bg-card: #ffffff;
            --text-dark: #1a2e25;
            --muted: #5e6e66;
            --muted-light: #eef5f0;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-body);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            background: var(--primary);
            padding: 0 20px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
            border-bottom: 2px solid var(--border);
        }

        .nav-wrap {
            max-width: 1180px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 78px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--accent);
            letter-spacing: 0.3px;
            min-width: 0;
        }

        .brand i {
            font-size: 1.7rem;
            color: var(--accent);
        }

        .brand span {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.25;
        }

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

        .nav-links a {
            color: var(--text-soft);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 9px 14px;
            border-radius: 30px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 7px;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-links a i {
            font-size: 0.85rem;
            color: var(--accent);
        }

        .nav-links a:hover,
        .nav-links a.active {
            background: rgba(255, 215, 0, 0.12);
            border-color: var(--border);
            color: #fff;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 40px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 0.88rem;
        }

        .btn-gold {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.35);
        }

        .btn-gold:hover {
            background: #ffde4d;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(255, 215, 0, 0.45);
            color: var(--primary);
        }

        .btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
            color: #fff;
        }

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

        .btn-outline-dark {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline-dark:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(10, 46, 28, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-2);
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 12px 28px rgba(10, 46, 28, 0.35);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            color: #fff;
            font-size: 1.5rem;
            padding: 8px 12px;
            border-radius: 12px;
            cursor: pointer;
            transition: var(--transition);
        }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            border-bottom: 3px solid var(--accent);
        }

        .article-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -60px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.1);
            filter: blur(10px);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-soft);
            font-size: 0.88rem;
            margin-bottom: 22px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            color: #ffde4d;
            text-decoration: underline;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            margin-top: 18px;
            color: var(--text-soft);
            font-size: 0.9rem;
        }

        .article-meta i {
            color: var(--accent);
            margin-right: 6px;
        }

        .article-hero h1 {
            color: #fff;
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            max-width: 900px;
            margin-bottom: 12px;
        }

        .article-hero .lead {
            color: var(--text-soft);
            font-size: 1.1rem;
            max-width: 820px;
            line-height: 1.7;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border);
            color: var(--accent);
            padding: 7px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* Article Content */
        .article-content-section {
            padding: 60px 0 70px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #e6efe9;
        }

        .article-body h2 {
            color: var(--primary);
            font-size: 1.7rem;
            font-weight: 700;
            margin: 32px 0 16px;
            line-height: 1.35;
            letter-spacing: -0.3px;
        }

        .article-body h3 {
            color: var(--primary-2);
            font-size: 1.3rem;
            font-weight: 700;
            margin: 26px 0 12px;
            line-height: 1.4;
        }

        .article-body p {
            color: #3e4e46;
            font-size: 1.02rem;
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 22px 24px;
            color: #3e4e46;
            font-size: 1rem;
            line-height: 1.7;
        }

        .article-body li {
            margin-bottom: 10px;
        }

        .article-body img {
            border-radius: 16px;
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #f6fbf8;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            color: var(--primary);
            font-style: italic;
            font-weight: 500;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #e6efe9;
        }

        .sidebar-card h3 {
            color: var(--primary);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--muted-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
        }

        .sidebar-list {
            list-style: none;
            margin: 0;
        }

        .sidebar-list li {
            margin-bottom: 14px;
        }

        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: center;
            color: #3e4e46;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            line-height: 1.4;
        }

        .sidebar-list a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }

        .sidebar-list a i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 18px;
            text-align: center;
        }

        .cta-sidebar {
            background: var(--primary);
            color: #fff;
            border-radius: 16px;
            padding: 26px 22px;
            text-align: left;
        }

        .cta-sidebar h4 {
            color: var(--accent);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-sidebar p {
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .btn-block {
            width: 100%;
        }

        /* Not found */
        .not-found {
            text-align: left;
            padding: 30px 0;
        }

        .not-found i {
            font-size: 2.8rem;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .not-found h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--muted);
            margin-bottom: 24px;
        }

        /* CTA section */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            left: -60px;
            bottom: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            filter: blur(8px);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-text h2 {
            color: #fff;
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-text p {
            color: var(--text-soft);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 26px;
            max-width: 520px;
        }

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

        .cta-image img {
            border-radius: 20px;
            box-shadow: 0 24px 50px rgba(0, 0, 0, 0.3);
            border: 2px solid rgba(255, 215, 0, 0.3);
        }

        /* Footer */
        .site-footer {
            background: #082017;
            color: var(--text-soft);
            padding: 60px 0 0;
            border-top: 3px solid var(--accent);
        }

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

        .footer-brand h3 {
            color: var(--accent);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .footer-brand p {
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 380px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

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

        .footer-col a {
            color: var(--text-soft);
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.6rem;
            box-shadow: 0 8px 26px rgba(0, 0, 0, 0.3);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.75;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 14px 34px rgba(255, 215, 0, 0.4);
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-content {
                grid-template-columns: 1fr;
            }
            .cta-image {
                order: -1;
                max-width: 420px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 78px;
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 18px 20px 22px;
                border-bottom: 3px solid var(--accent);
                box-shadow: 0 18px 30px rgba(0, 0, 0, 0.25);
                gap: 6px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 12px;
            }
            .nav-cta {
                gap: 8px;
            }
            .nav-cta .btn-outline-light {
                display: inline-flex;
            }
            .brand span {
                font-size: 0.9rem;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .site-header {
                padding: 0 14px;
            }
            .nav-wrap {
                height: 68px;
                gap: 12px;
            }
            .brand span {
                font-size: 0.8rem;
            }
            .brand i {
                font-size: 1.4rem;
            }
            .nav-cta .btn {
                padding: 8px 12px;
                font-size: 0.78rem;
            }
            .article-hero {
                padding: 40px 0 36px;
            }
            .article-hero h1 {
                font-size: 1.45rem;
            }
            .article-hero .lead {
                font-size: 0.95rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }
            .article-content-section {
                padding: 40px 0 50px;
            }
            .article-body p {
                font-size: 0.95rem;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-text h2 {
                font-size: 1.6rem;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0D6E6E;
            --primary-dark: #095A5A;
            --primary-light: #E6F7F7;
            --accent: #FF9F43;
            --accent-hover: #F08C1A;
            --bg: #F8FCFC;
            --surface: #FFFFFF;
            --text: #1A2B3C;
            --text-muted: #5A6B7B;
            --text-light: #8FA0B0;
            --border: #D5E7E8;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(13, 110, 110, 0.08);
            --shadow-lg: 0 12px 40px rgba(13, 110, 110, 0.12);
            --transition: 0.25s ease;
            --font: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover, a:focus {
            color: var(--accent);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            transition: all var(--transition);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--surface);
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.7;
        }
        /* Header */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(13, 110, 110, 0.06);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 24px;
            max-width: 1200px;
            margin: 0 auto;
            gap: 12px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text);
            line-height: 1.4;
            flex: 0 0 auto;
            max-width: 380px;
        }
        .brand i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .brand span {
            display: inline-block;
            white-space: normal;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
        }
        .nav-links a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .nav-links a:hover, .nav-links a:focus {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 1.2rem;
            color: var(--text);
        }
        .btn {
            display: inline-block;
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            text-align: center;
            border: 1px solid transparent;
            transition: all var(--transition);
            line-height: 1.4;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.88rem;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(13, 110, 110, 0.25);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover, .btn-accent:focus {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 159, 67, 0.3);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover, .btn-outline:focus {
            background: var(--primary);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            border-color: var(--border);
            color: var(--text-muted);
        }
        .btn-outline-light:hover, .btn-outline-light:focus {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-gold {
            background: var(--accent);
            color: #fff;
        }
        .btn-gold:hover, .btn-gold:focus {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        /* Hero */
        .hero {
            background: linear-gradient(135deg, #E8F7F7 0%, #D2F0F0 40%, #FDF6EC 100%);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(13, 110, 110, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }
        .hero-copy {
            flex: 1 1 55%;
        }
        .hero-copy h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 18px;
        }
        .hero-copy h1 .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-copy .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat strong {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
        }
        .hero-stat span {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .hero-visual {
            flex: 1 1 45%;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            object-fit: cover;
            aspect-ratio: 4/5;
        }
        .hero-badge {
            position: absolute;
            bottom: 24px;
            left: -16px;
            background: var(--surface);
            border-radius: 12px;
            padding: 14px 20px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .hero-badge i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        /* Trust bar */
        .trust-bar {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .trust-grid {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .trust-item i {
            color: var(--primary);
            font-size: 1.2rem;
        }
        /* Cards */
        .card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* Feature list */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }
        .feature-item:last-child {
            border-bottom: none;
        }
        .feature-item .feature-num {
            flex: 0 0 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .feature-item h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* Scenario block */
        .scenario-block {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 36px;
            margin-bottom: 24px;
            transition: all var(--transition);
        }
        .scenario-block:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .scenario-block h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .scenario-block .scenario-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 12px;
        }
        .scenario-block p {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 20px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius);
            padding: 56px 40px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255,159,67,0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 28px;
            color: rgba(255,255,255,0.9);
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }
        /* Footer */
        .site-footer {
            background: #0F1F2B;
            color: #B0C4D4;
            padding: 60px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.5;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: #B0C4D4;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #B0C4D4;
            font-size: 0.92rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover, .footer-col ul li a:focus {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.88rem;
            color: #8FA0B0;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                flex-direction: column;
                gap: 36px;
            }
            .hero-copy {
                flex: 1 1 100%;
            }
            .hero-visual {
                flex: 1 1 100%;
            }
            .hero-copy h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .hero {
                padding: 48px 0;
            }
            .hero-copy h1 {
                font-size: 1.8rem;
            }
            .hero-visual img {
                max-width: 100%;
                aspect-ratio: 1/1;
            }
            .hero-badge {
                left: 8px;
                bottom: 12px;
                padding: 10px 16px;
                font-size: 0.85rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 12px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .nav-cta {
                width: 100%;
                justify-content: flex-start;
                padding-top: 12px;
                flex-wrap: wrap;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scenario-block {
                padding: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-wrap {
                padding: 10px 16px;
            }
            .brand {
                font-size: 0.9rem;
                max-width: 260px;
            }
            .hero-copy h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .trust-grid {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0F7B8C;
            --primary-dark: #0A5C6A;
            --primary-light: #E3F2F5;
            --accent: #2EB8C7;
            --accent-light: #D4F1F5;
            --accent-glow: #B8E6EE;
            --bg: #F7FCFD;
            --bg-alt: #EDF7F9;
            --white: #FFFFFF;
            --text: #1A3A42;
            --text-muted: #5B7B83;
            --text-light: #89A8B0;
            --border: #D8ECF0;
            --border-strong: #B5D9E0;
            --shadow-sm: 0 2px 8px rgba(15,123,140,0.08);
            --shadow-md: 0 6px 20px rgba(15,123,140,0.12);
            --shadow-lg: 0 12px 36px rgba(15,123,140,0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --font-primary: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        
        * {
            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-primary);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        
        button {
            cursor: pointer;
            font-family: var(--font-primary);
        }
        
        input, textarea {
            font-family: var(--font-primary);
        }
        
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        
        /* Header & Navigation */
        .site-header {
            background: var(--white);
            border-bottom: 2px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(15,123,140,0.06);
        }
        
        .nav-wrap {
            max-width: 1280px;
            margin: 0 auto;
            padding: var(--spacing-sm) var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 15px;
            color: var(--primary-dark);
            max-width: 420px;
            line-height: 1.3;
        }
        
        .brand i {
            color: var(--accent);
            font-size: 22px;
            flex-shrink: 0;
        }
        
        .brand span {
            display: inline;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
        }
        
        .nav-links a i {
            font-size: 13px;
        }
        
        .nav-links a:hover {
            background: var(--bg-alt);
            color: var(--primary-dark);
        }
        
        .nav-links a.active {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px var(--accent-light);
        }
        
        .nav-cta {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--primary-dark);
            padding: 8px;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            border: none;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 18px;
        }
        
        .btn-outline-light {
            background: transparent;
            color: var(--primary-dark);
            border: 1.5px solid var(--border-strong);
        }
        
        .btn-outline-light:hover {
            background: var(--bg-alt);
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        
        .btn-gold {
            background: var(--accent);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(46,184,199,0.3);
        }
        
        .btn-gold:hover {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 6px 20px rgba(15,123,140,0.35);
            transform: translateY(-2px);
        }
        
        .btn-primary {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(15,123,140,0.25);
        }
        
        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            box-shadow: 0 6px 20px rgba(15,123,140,0.35);
            transform: translateY(-2px);
        }
        
        .btn-accent {
            background: var(--accent);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(46,184,199,0.3);
        }
        
        .btn-accent:hover {
            background: var(--primary);
            color: var(--white);
            transform: translateY(-2px);
        }
        
        /* Hero */
        .hero {
            background: linear-gradient(135deg, #0A5C6A 0%, #0F7B8C 50%, #2EB8C7 100%);
            padding: var(--spacing-xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            pointer-events: none;
        }
        
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            pointer-events: none;
        }
        
        .hero .container {
            position: relative;
            z-index: 1;
        }
        
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        
        .hero-content {
            text-align: left;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.15);
            border: 1px solid rgba(255,255,255,0.25);
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--white);
            margin-bottom: var(--spacing-md);
        }
        
        .hero-content h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--white);
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
        }
        
        .hero-content p {
            font-size: 18px;
            color: rgba(255,255,255,0.88);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            max-width: 540px;
        }
        
        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }
        
        .hero-actions .btn-outline-light {
            color: var(--white);
            border-color: rgba(255,255,255,0.5);
        }
        
        .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: var(--white);
            color: var(--white);
        }
        
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .hero-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: 0 20px 48px rgba(0,0,0,0.18);
            width: 100%;
            max-width: 440px;
            position: relative;
        }
        
        .hero-card::before {
            content: '';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            border-radius: 2px;
            background: var(--accent);
        }
        
        .hero-card-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
        }
        
        .hero-card-icon i {
            font-size: 28px;
            color: var(--primary);
        }
        
        .hero-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--spacing-xs);
        }
        
        .hero-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        
        .hero-stats {
            display: flex;
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border);
        }
        
        .hero-stat {
            text-align: center;
            flex: 1;
        }
        
        .hero-stat strong {
            display: block;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
        }
        
        .hero-stat span {
            font-size: 13px;
            color: var(--text-muted);
        }
        
        /* Section Base */
        .section {
            padding: var(--spacing-xl) 0;
        }
        
        .section-alt {
            background: var(--bg-alt);
        }
        
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
            text-align: left;
        }
        
        .section-desc {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            text-align: left;
            max-width: 680px;
        }
        
        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        
        .process-step {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }
        
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent-light);
        }
        
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-weight: 800;
            font-size: 18px;
            margin-bottom: var(--spacing-sm);
        }
        
        .process-step h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--spacing-xs);
        }
        
        .process-step p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.65;
        }
        
        /* Feature List */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }
        
        .feature-item {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            padding: var(--spacing-md);
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        
        .feature-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        
        .feature-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .feature-icon i {
            font-size: 20px;
            color: var(--primary);
        }
        
        .feature-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        
        .feature-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        
        /* Checklist */
        .checklist {
            list-style: none;
            padding: 0;
            margin: var(--spacing-md) 0;
        }
        
        .checklist li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text);
            border-bottom: 1px solid var(--border);
        }
        
        .checklist li:last-child {
            border-bottom: none;
        }
        
        .checklist li i {
            color: var(--accent);
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        
        /* Info Box */
        .info-box {
            background: var(--white);
            border-left: 4px solid var(--accent);
            border-radius: var(--radius-sm);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            box-shadow: var(--shadow-sm);
        }
        
        .info-box h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: var(--spacing-xs);
        }
        
        .info-box p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-sm);
        }
        
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-md);
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            gap: var(--spacing-sm);
        }
        
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        
        .faq-answer-inner {
            padding: 0 var(--spacing-md) var(--spacing-md);
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0A5C6A 0%, #0F7B8C 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            margin: var(--spacing-lg) 0;
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
        }
        
        .cta-section h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--white);
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 1;
        }
        
        .cta-section p {
            font-size: 16px;
            color: rgba(255,255,255,0.88);
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
            max-width: 600px;
        }
        
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }
        
        /* Footer */
        .site-footer {
            background: #0A3A42;
            color: rgba(255,255,255,0.85);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        
        .footer-brand h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }
        
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.6;
        }
        
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: var(--spacing-sm);
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 8px;
        }
        
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }
        
        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            box-shadow: 0 4px 20px rgba(15,123,140,0.3);
            opacity: 0.85;
            transition: var(--transition);
            animation: fab-breathe 2.5s ease-in-out infinite;
        }
        
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(15,123,140,0.45);
        }
        
        .fab-left:active {
            transform: scale(0.95);
        }
        
        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 4px 20px rgba(15,123,140,0.3); }
            50% { box-shadow: 0 8px 32px rgba(15,123,140,0.5); }
        }
        
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #E74C3C;
            border: 2px solid var(--white);
            animation: blink 1.5s ease-in-out infinite;
        }
        
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .hero-content h1 {
                font-size: 32px;
            }
            
            .hero-content p {
                font-size: 16px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .nav-wrap {
                flex-wrap: wrap;
            }
        }
        
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: var(--spacing-sm) 0;
                gap: 4px;
            }
            
            .nav-links.open {
                display: flex;
            }
            
            .nav-links a {
                width: 100%;
                justify-content: flex-start;
            }
            
            .nav-cta {
                margin-left: auto;
            }
            
            .hero {
                padding: var(--spacing-lg) 0;
            }
            
            .hero-content h1 {
                font-size: 26px;
            }
            
            .hero-card {
                padding: var(--spacing-md);
            }
            
            .section-title {
                font-size: 26px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 22px;
            }
            
            .hero-content p {
                font-size: 14px;
            }
            
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            
            .hero-actions .btn {
                width: 100%;
            }
            
            .process-grid {
                grid-template-columns: 1fr;
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }
            
            .hero-stats {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            
            .cta-section {
                padding: var(--spacing-md);
            }
            
            .cta-section h2 {
                font-size: 22px;
            }
            
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 20px;
                left: 12px;
                bottom: 80px;
            }
        }