/* roulang page: index */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh;position:relative}
        h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.25}
        h2{font-size:2rem;margin-bottom:1rem}
        h3{font-size:1.4rem;margin-bottom:0.75rem}
        p{margin-bottom:1rem;color:var(--text-secondary)}
        a{text-decoration:none;color:inherit;transition:var(--transition-base)}
        img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
        button,input,select,textarea{font-family:inherit;font-size:1rem}
        .container{max-width:1200px;margin:0 auto;padding:0 24px}
        .container--tight{max-width:960px}
        .container--wide{max-width:1400px}
        .br{display:none}
        @media(min-width:768px){.br{display:block}}
        /* Navigation */
        .header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,46,28,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-color);transition:var(--transition-base)}
        .header.scrolled{background:rgba(10,46,28,0.95);box-shadow:0 4px 24px rgba(0,0,0,0.3)}
        .nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;flex-wrap:wrap;gap:12px}
        .nav__logo{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-weight:800;font-size:1.25rem;color:var(--accent-gold);letter-spacing:-0.3px;white-space:nowrap}
        .nav__logo img{width:38px;height:38px;border-radius:50%;border:2px solid var(--accent-gold);object-fit:cover}
        .nav__links{display:flex;align-items:center;gap:8px;list-style:none;flex-wrap:wrap}
        .nav__links a{display:block;padding:8px 16px;border-radius:20px;font-weight:600;font-size:0.95rem;color:var(--text-secondary);transition:var(--transition-base);white-space:nowrap}
        .nav__links a:hover,.nav__links a.active{background:var(--accent-gold);color:var(--bg-primary)}
        .nav__actions{display:flex;align-items:center;gap:10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:24px;font-weight:700;font-size:0.95rem;border:none;cursor:pointer;transition:var(--transition-base);white-space:nowrap}
        .btn--ghost{background:transparent;color:var(--text-primary);border:1.5px solid var(--text-secondary)}
        .btn--ghost:hover{background:rgba(255,255,255,0.08);border-color:var(--accent-gold);color:var(--accent-gold)}
        .btn--solid{background:var(--accent-gold);color:var(--bg-primary);box-shadow:var(--shadow-sm)}
        .btn--solid:hover{background:#FFEA33;transform:translateY(-2px);box-shadow:var(--shadow-glow)}
        .btn--large{padding:14px 32px;font-size:1.05rem;border-radius:28px}
        .mobile-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.8rem;cursor:pointer;padding:4px 8px}
        @media(max-width:1023px){
            .mobile-toggle{display:block}
            .nav__links{display:none;flex-direction:column;width:100%;background:var(--bg-secondary);border-radius:var(--radius-md);padding:16px;margin-top:8px;border:1px solid var(--border-color)}
            .nav__links.open{display:flex}
            .nav__links a{padding:10px 16px;width:100%}
            .nav__actions .btn--ghost{display:none}
            .nav__actions .btn--solid{padding:8px 18px;font-size:0.85rem}
        }
        /* Hero */
        .hero{min-height:85vh;display:flex;align-items:center;background:linear-gradient(135deg,var(--bg-primary) 0%,#0D3624 40%,var(--bg-secondary) 100%);position:relative;overflow:hidden;padding-top:80px}
        .hero::before{content:'';position:absolute;top:-50%;right:-20%;width:700px;height:700px;background:radial-gradient(circle,rgba(255,215,0,0.06),transparent 70%);border-radius:50%;pointer-events:none}
        .hero__bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;opacity:0.18;z-index:0}
        .hero .container{position:relative;z-index:1;display:flex;align-items:center;gap:48px;flex-wrap:wrap}
        .hero__content{flex:1 1 500px;max-width:600px}
        .hero__label{display:inline-block;background:rgba(255,215,0,0.12);border:1px solid var(--accent-gold);color:var(--accent-gold);padding:6px 16px;border-radius:20px;font-weight:700;font-size:0.85rem;margin-bottom:20px;letter-spacing:0.5px}
        .hero__title{font-size:3rem;font-weight:900;line-height:1.1;margin-bottom:20px;color:var(--text-primary)}
        .hero__title span{color:var(--accent-gold);text-shadow:0 0 12px rgba(255,215,0,0.4)}
        .hero__desc{font-size:1.1rem;color:var(--text-secondary);margin-bottom:28px;max-width:480px}
        .hero__ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
        .hero__stats{display:flex;gap:28px;flex-wrap:wrap;padding-top:16px;border-top:1px solid var(--border-color)}
        .hero__stat b{display:block;font-size:1.5rem;color:var(--accent-gold)}
        .hero__stat span{font-size:0.85rem;color:var(--text-muted)}
        .hero__visual{flex:1 1 360px;position:relative}
        .hero__phone{width:280px;height:auto;margin:0 auto;border-radius:32px;box-shadow:0 24px 60px rgba(0,0,0,0.5),0 0 0 3px rgba(255,215,0,0.15);overflow:hidden;position:relative}
        .hero__phone img{width:100%;height:auto;display:block;border-radius:32px}
        .hero__phone::after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,46,28,0.2),transparent 50%);pointer-events:none;border-radius:32px}
        @media(max-width:767px){
            .hero__title{font-size:2rem}
            .hero__desc{font-size:1rem}
            .hero__phone{width:200px}
        }
        /* Section Base */
        section{padding:80px 0}
        .section__header{margin-bottom:48px}
        .section__label{display:inline-block;color:var(--accent-gold);font-weight:700;font-size:0.85rem;text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
        .section__title{font-size:2.2rem;font-weight:800;margin-bottom:12px}
        .section__desc{color:var(--text-secondary);max-width:700px;font-size:1.05rem}
        /* Cards */
        .grid{display:grid;gap:24px}
        .grid--3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
        .grid--4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
        /* Vertical Cards (种草流) */
        .vertical-scroll{display:flex;gap:20px;overflow-x:auto;padding:20px 0 30px;-webkit-overflow-scrolling:touch;scroll-snap-type:x mandatory}
        .vertical-scroll::-webkit-scrollbar{height:6px}
        .vertical-scroll::-webkit-scrollbar-thumb{background:var(--accent-gold);border-radius:3px}
        .v-card{flex:0 0 240px;scroll-snap-align:start;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition-base);position:relative}
        .v-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-glow);border-color:var(--accent-gold)}
        .v-card__img{width:100%;aspect-ratio:3/4;object-fit:cover;display:block}
        .v-card__body{padding:16px}
        .v-card__tag{display:inline-block;background:var(--accent-red);color:#fff;font-size:0.7rem;font-weight:700;padding:3px 10px;border-radius:12px;margin-bottom:8px}
        .v-card__title{font-size:1rem;font-weight:700;margin-bottom:6px}
        .v-card__btn{display:block;margin:12px 16px 16px;text-align:center;background:var(--accent-gold);color:var(--bg-primary);padding:10px;border-radius:20px;font-weight:700;font-size:0.9rem;transition:var(--transition-base)}
        .v-card__btn:hover{background:#FFEA33;transform:scale(1.02)}
        /* Feature Cards */
        .feature-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:32px 28px;transition:var(--transition-base);position:relative;overflow:hidden}
        .feature-card:hover{border-color:var(--accent-gold);transform:translateY(-4px);box-shadow:var(--shadow-md)}
        .feature-card__icon{font-size:2.4rem;margin-bottom:16px;display:block}
        .feature-card__title{font-size:1.25rem;font-weight:700;margin-bottom:8px}
        .feature-card__desc{color:var(--text-secondary);font-size:0.95rem;margin-bottom:0}
        /* Product Stage (截图舞台) */
        .stage{display:flex;align-items:center;gap:32px;flex-wrap:wrap;background:var(--bg-secondary);border-radius:var(--radius-lg);padding:40px;border:1px solid var(--border-color);margin-bottom:24px}
        .stage__screens{flex:1 1 400px;display:flex;gap:16px;overflow-x:auto;padding-bottom:12px}
        .stage__screens img{flex:0 0 260px;height:auto;border-radius:var(--radius-md);border:2px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition-base)}
        .stage__screens img:hover{border-color:var(--accent-gold);transform:scale(1.02)}
        .stage__info{flex:1 1 300px}
        .stage__info h3{font-size:1.6rem;margin-bottom:12px}
        .stage__info p{color:var(--text-secondary);margin-bottom:19px}
        /* Comparison Table */
        .compare-table{width:100%;border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-color)}
        .compare-table th{background:var(--accent-gold);color:var(--bg-primary);padding:14px 20px;font-weight:700;text-align:left;font-size:0.95rem}
        .compare-table td{padding:14px 20px;border-bottom:1px solid var(--border-color);color:var(--text-secondary);font-size:0.9rem}
        .compare-table tr:last-child td{border-bottom:none}
        .compare-table td:first-child{font-weight:600;color:var(--text-primary)}
        .check{color:#4CAF50;font-weight:bold}
        /* Milestones */
        .milestones{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between}
        .milestone{flex:1 1 180px;text-align:left;padding:20px;border-left:3px solid var(--accent-gold);background:var(--bg-card);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
        .milestone__year{font-size:1.8rem;font-weight:900;color:var(--accent-gold);margin-bottom:4px}
        .milestone__text{color:var(--text-secondary);font-size:0.9rem}
        /* Social Proof */
        .proof-bar{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;padding:24px;background:var(--bg-card);border-radius:var(--radius-md);border:1px solid var(--border-color)}
        .proof-item{text-align:center;padding:10px 24px}
        .proof-item b{display:block;font-size:2rem;color:var(--accent-gold)}
        .proof-item span{color:var(--text-muted);font-size:0.85rem}
        /* Article List */
        .article-list{display:grid;gap:20px}
        .article-item{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg-card);border-radius:var(--radius-sm);border:1px solid transparent;transition:var(--transition-base);flex-wrap:wrap}
        .article-item:hover{border-color:var(--accent-gold);box-shadow:var(--shadow-sm)}
        .article-item__date{font-size:0.8rem;color:var(--accent-gold);font-weight:600;min-width:70px}
        .article-item__title{flex:1;font-weight:600;color:var(--text-primary);font-size:0.95rem}
        .article-item__cat{font-size:0.75rem;background:rgba(255,215,0,0.15);color:var(--accent-gold);padding:4px 12px;border-radius:12px;white-space:nowrap}
        /* FAQ */
        .faq-list{display:grid;gap:12px;max-width:800px}
        .faq-item{border:1px solid var(--border-color);border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-card);transition:var(--transition-base)}
        .faq-item:hover{border-color:var(--accent-gold)}
        .faq-q{width:100%;background:none;border:none;color:var(--text-primary);font-weight:600;font-size:1rem;padding:18px 24px;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
        .faq-q::after{content:'▾';font-size:1.2rem;transition:transform 0.3s}
        .faq-item.open .faq-q::after{transform:rotate(180deg)}
        .faq-a{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.4s ease;padding:0 24px;color:var(--text-secondary);font-size:0.95rem}
        .faq-item.open .faq-a{max-height:300px;padding:0 24px 20px}
        /* CTA */
        .cta{background:linear-gradient(135deg,var(--bg-secondary),#0A2E1C);border-radius:var(--radius-lg);padding:50px 40px;text-align:left;border:1px solid var(--border-color);position:relative;overflow:hidden}
        .cta::before{content:'';position:absolute;top:-30%;right:-10%;width:300px;height:300px;background:radial-gradient(circle,rgba(255,215,0,0.08),transparent 70%);border-radius:50%}
        .cta h2{font-size:2rem;margin-bottom:12px;position:relative}
        .cta p{color:var(--text-secondary);margin-bottom:24px;position:relative;max-width:600px}
        .cta .btn{margin-right:12px;position:relative}
        /* Footer */
        .footer{background:var(--bg-secondary);border-top:2px solid var(--accent-gold);padding:48px 0 24px;color:var(--text-secondary)}
        .footer__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;margin-bottom:32px}
        .footer__col h4{color:var(--accent-gold);margin-bottom:14px;font-size:1rem}
        .footer__col a{display:block;color:var(--text-muted);margin-bottom:8px;font-size:0.9rem;transition:var(--transition-base)}
        .footer__col a:hover{color:var(--accent-gold)}
        .footer__bottom{text-align:center;border-top:1px solid var(--border-color);padding-top:24px;font-size:0.8rem;color:var(--text-muted)}
        .footer__badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,215,0,0.1);padding:6px 14px;border-radius:20px;font-weight:600;font-size:0.8rem;border:1px solid var(--border-color);margin-top:12px}
        /* FAB */
        .fab{position:fixed;left:24px;bottom:80px;z-index:999;width:50px;height:50px;border-radius:50%;background:var(--bg-secondary);border:2px solid var(--accent-gold);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--accent-gold);box-shadow:0 4px 20px rgba(255,215,0,0.3);transition:var(--transition-base);animation:fadeInUp 0.6s ease}
        .fab:hover{transform:scale(1.1);box-shadow:0 6px 28px rgba(255,215,0,0.5);}
        @keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
        @media(max-width:767px){
            section{padding:50px 0}
            .hero{padding-top:80px}
            .container{padding:0 16px}
            .section__title{font-size:1.7rem}
            .btn--large{padding:12px 24px;font-size:0.95rem}
            .v-card{flex:0 0 180px}
        }

/* roulang page: article */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body { font-family: var(--font-body); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; min-height: 100vh; position: relative; }
        a { text-decoration: none; color: inherit; transition: var(--transition-base); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: 1rem; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container--tight { max-width: 960px; }
        .container--narrow { max-width: 820px; }

        /* Navigation */
        .header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,46,28,0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-color); transition: var(--transition-base); }
        .header.scrolled { background: rgba(10,46,28,0.95); box-shadow: 0 4px 24px rgba(0,0,0,0.3); }
        .nav { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; flex-wrap: wrap; gap: 12px; }
        .nav__logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-heading); font-weight: 800; font-size: 1.25rem; color: var(--accent-gold); letter-spacing: -0.3px; white-space: nowrap; }
        .nav__logo img { width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--accent-gold); object-fit: cover; }
        .nav__links { display: flex; align-items: center; gap: 8px; list-style: none; flex-wrap: wrap; }
        .nav__links a { display: block; padding: 8px 16px; border-radius: 20px; font-weight: 600; font-size: 0.95rem; color: var(--text-secondary); transition: var(--transition-base); white-space: nowrap; }
        .nav__links a:hover, .nav__links a.active { background: var(--accent-gold); color: var(--bg-primary); }
        .nav__actions { display: flex; align-items: center; gap: 10px; }
        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 22px; border-radius: 24px; font-weight: 700; font-size: 0.95rem; border: none; cursor: pointer; transition: var(--transition-base); white-space: nowrap; }
        .btn--ghost { background: transparent; color: var(--text-primary); border: 1.5px solid var(--text-secondary); }
        .btn--ghost:hover { background: rgba(255,255,255,0.08); border-color: var(--accent-gold); color: var(--accent-gold); }
        .btn--solid { background: var(--accent-gold); color: var(--bg-primary); box-shadow: var(--shadow-sm); }
        .btn--solid:hover { background: #FFEA33; transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn--large { padding: 14px 32px; font-size: 1.05rem; border-radius: 28px; }
        .mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.8rem; cursor: pointer; padding: 4px 8px; }
        @media (max-width: 1024px) {
            .mobile-toggle { display: block; }
            .nav__links { display: none; flex-direction: column; width: 100%; background: var(--bg-secondary); border-radius: var(--radius-md); padding: 16px; margin-top: 8px; border: 1px solid var(--border-color); }
            .nav__links.open { display: flex; }
            .nav__links a { padding: 10px 16px; width: 100%; }
            .nav__actions .btn--ghost { display: none; }
            .nav__actions .btn--solid { padding: 8px 18px; font-size: 0.85rem; }
        }

        /* Article Content */
        .article-page { padding-top: 120px; padding-bottom: 80px; min-height: 70vh; }
        .article-header { margin-bottom: 48px; }
        .article-meta { display: flex; gap: 20px; align-items: center; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 16px; flex-wrap: wrap; }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-category { display: inline-block; background: var(--accent-red); color: #fff; padding: 4px 14px; border-radius: 20px; font-weight: 700; font-size: 0.8rem; }
        .article-title { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 900; line-height: 1.2; color: var(--text-primary); margin-bottom: 16px; }
        .article-title span { color: var(--accent-gold); text-shadow: 0 0 8px rgba(255,215,0,0.3); }
        .article-excerpt { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.7; max-width: 720px; }
        .article-body { font-size: 1rem; line-height: 1.8; color: var(--text-secondary); }
        .article-body h2 { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 800; color: var(--accent-gold); margin: 32px 0 16px; }
        .article-body h3 { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 700; color: var(--text-primary); margin: 24px 0 12px; }
        .article-body p { margin-bottom: 16px; }
        .article-body ul { padding-left: 24px; margin-bottom: 20px; }
        .article-body li { margin-bottom: 8px; position: relative; }
        .article-body li::marker { color: var(--accent-gold); }
        .article-body strong { color: var(--accent-gold); font-weight: 700; }
        .article-body img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-md); }
        .article-body blockquote { border-left: 4px solid var(--accent-gold); background: rgba(255,215,0,0.05); padding: 16px 24px; border-radius: var(--radius-sm); margin: 24px 0; font-style: italic; color: var(--text-primary); }
        .article-cta-box { background: var(--bg-secondary); border: 1px solid var(--accent-gold); border-radius: var(--radius-lg); padding: 32px; margin-top: 40px; text-align: left; }
        .article-cta-box h3 { font-size: 1.3rem; color: var(--accent-gold); margin-bottom: 8px; }
        .article-cta-box p { color: var(--text-secondary); margin-bottom: 20px; }
        .not-found { text-align: left; padding: 60px 0; }
        .not-found h2 { font-size: 1.8rem; color: var(--accent-gold); margin-bottom: 16px; }
        .not-found p { color: var(--text-secondary); margin-bottom: 24px; }

        /* Footer */
        .footer { background: #051C11; border-top: 2px solid var(--accent-gold); padding: 56px 0 32px; color: var(--text-secondary); }
        .footer__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; margin-bottom: 40px; }
        .footer__col h4 { font-family: var(--font-heading); font-size: 1rem; font-weight: 800; color: var(--accent-gold); margin-bottom: 16px; }
        .footer__col a { display: block; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 10px; transition: var(--transition-base); }
        .footer__col a:hover { color: var(--accent-gold); transform: translateX(4px); }
        .footer__badge { display: inline-block; background: var(--accent-red); color: #fff; padding: 6px 16px; border-radius: 20px; font-weight: 700; font-size: 0.85rem; margin-top: 12px; }
        .footer__bottom { text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,215,0,0.1); font-size: 0.85rem; color: var(--text-muted); }

        /* FAB */
        .fab { position: fixed; left: 20px; bottom: 80px; z-index: 1100; width: 52px; height: 52px; border-radius: 50%; background: var(--bg-secondary); border: 2px solid var(--accent-gold); display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: var(--shadow-glow); transition: var(--transition-base); opacity: 0.8; animation: float 3s ease-in-out infinite; }
        .fab::after { content: '💬'; font-size: 1.4rem; }
        .fab:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 0 25px rgba(255,215,0,0.5); }
        @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

        @media (max-width: 768px) {
            .article-title { font-size: 1.8rem; }
            .article-page { padding-top: 100px; }
            .fab { width: 46px; height: 46px; left: 12px; bottom: 70px; }
        }

/* roulang page: category1 */
/* === Design System - Style A: Lucky Gold & Emerald Jade === */
        :root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--tight {
            max-width: 960px;
        }

        /* === Navigation === */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition-base);
        }

        .header.scrolled {
            background: rgba(10, 46, 28, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav__logo img {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--accent-gold);
            object-fit: cover;
        }

        .nav__links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav__links a {
            display: block;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav__links a:hover,
        .nav__links a.active {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }

        .nav__actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn--ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--text-secondary);
        }

        .btn--ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .btn--solid {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn--solid:hover {
            background: #FFEA33;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn--large {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 28px;
        }

        .btn--outline-gold {
            background: transparent;
            color: var(--accent-gold);
            border: 2px solid var(--accent-gold);
        }

        .btn--outline-gold:hover {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-glow);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* === Hero Category === */
        .hero-category {
            min-height: 60vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--bg-primary) 0%, #0D3624 40%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-category__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .hero-category .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-category__content {
            flex: 1 1 500px;
            max-width: 600px;
        }

        .hero-category__label {
            display: inline-block;
            background: rgba(211, 47, 47, 0.15);
            border: 1px solid var(--accent-red);
            color: var(--accent-red);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-category__title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .hero-category__title span {
            color: var(--accent-gold);
            text-shadow: 0 0 12px rgba(255, 215, 0, 0.4);
        }

        .hero-category__desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 480px;
            line-height: 1.7;
        }

        .hero-category__ctas {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-category__stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .hero-category__stat b {
            display: block;
            font-size: 1.5rem;
            color: var(--accent-gold);
            font-family: var(--font-heading);
        }

        .hero-category__stat span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-category__visual {
            flex: 1 1 360px;
            position: relative;
        }

        .hero-category__visual img {
            width: 100%;
            max-width: 400px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 0 3px rgba(255, 215, 0, 0.2);
            border: 1px solid var(--border-color);
        }

        /* === Section Base === */
        section {
            padding: 80px 0;
        }

        .section--dark {
            background: var(--bg-secondary);
        }

        .section__header {
            margin-bottom: 48px;
            text-align: left;
        }

        .section__label {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section__title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section__desc {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }

        /* === Review Cards === */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .review-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .review-card__badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-red);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .review-card__badge--gold {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }

        .review-card__header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 18px;
        }

        .review-card__icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            border: 2px solid var(--accent-gold);
            object-fit: cover;
            flex-shrink: 0;
        }

        .review-card__name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            font-family: var(--font-heading);
        }

        .review-card__rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.9rem;
            color: var(--accent-gold);
        }

        .review-card__body {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .review-card__features {
            list-style: none;
            padding: 0;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .review-card__feature {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            background: rgba(255, 215, 0, 0.05);
            padding: 6px 12px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .review-card__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .review-card__score {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            font-family: var(--font-heading);
        }

        .review-card__score span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        /* === Trust Indicators === */
        .trust-indicators {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 215, 0, 0.05);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 12px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 600;
            flex-shrink: 0;
        }

        .trust-item__icon {
            color: var(--accent-gold);
            font-size: 1.2rem;
        }

        /* === Comparison Table === */
        .comparison {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .comparison-table {
            width: 100%;
            min-width: 700px;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .comparison-table th {
            background: var(--bg-secondary);
            color: var(--accent-gold);
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-bottom: 2px solid var(--border-color);
        }

        .comparison-table td {
            padding: 14px 20px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }

        .comparison-table tr:hover td {
            background: rgba(255, 215, 0, 0.03);
        }

        .comparison-table .highlight {
            color: var(--accent-gold);
            font-weight: 700;
        }

        /* === Expert Block === */
        .expert-block {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            align-items: flex-start;
            margin-top: 48px;
        }

        .expert-block__avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 3px solid var(--accent-gold);
            object-fit: cover;
            flex-shrink: 0;
        }

        .expert-block__content {
            flex: 1;
            min-width: 250px;
        }

        .expert-block__name {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .expert-block__role {
            font-size: 0.85rem;
            color: var(--accent-gold);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .expert-block__text {
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* === FAQ === */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--accent-gold);
        }

        .faq-item__question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            position: relative;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }

        .faq-item__question::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--accent-gold);
            flex-shrink: 0;
            transition: var(--transition-base);
        }

        .faq-item.open .faq-item__question::after {
            content: '−';
        }

        .faq-item__answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }

        .faq-item.open .faq-item__answer {
            display: block;
        }

        /* === CTA Section === */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section__title {
            font-size: 2.2rem;
            font-weight: 900;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .cta-section__title span {
            color: var(--accent-gold);
        }

        .cta-section__desc {
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* === Footer === */
        .footer {
            background: #061F13;
            padding: 60px 0 32px;
            border-top: 1px solid var(--border-color);
        }

        .footer__grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 36px;
            margin-bottom: 48px;
        }

        .footer__col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }

        .footer__col p,
        .footer__col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .footer__col a:hover {
            color: var(--accent-gold);
        }

        .footer__badge {
            display: inline-block;
            background: rgba(211, 47, 47, 0.15);
            border: 1px solid var(--accent-red);
            color: var(--accent-red);
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.5px;
            margin-top: 12px;
        }

        .footer__bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* === FAB Left Floating Action Button - Classic & Royal Style === */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 3px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.7;
            transition: var(--transition-base);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            animation: float 3s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 30px rgba(255, 215, 0, 0.5);
        }

        .fab:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab__icon {
            font-size: 1.6rem;
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }

        .fab:hover .fab__icon {
            transform: rotate(360deg);
        }

        .fab__notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-secondary);
            animation: blink 2s infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-6px); }
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* === Responsive Design === */
        @media (max-width: 1024px) {
            .hero-category__title {
                font-size: 2.2rem;
            }

            .hero-category .container {
                gap: 32px;
            }

            .review-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .nav__links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }

            .nav__links.open {
                display: flex;
            }

            .nav__links a {
                padding: 10px 16px;
                width: 100%;
            }

            .mobile-toggle {
                display: block;
            }

            .nav__actions .btn--ghost {
                display: none;
            }

            .nav__actions .btn--solid {
                padding: 8px 18px;
                font-size: 0.85rem;
            }

            .hero-category {
                min-height: auto;
                padding: 100px 0 60px;
            }

            .hero-category__title {
                font-size: 1.8rem;
            }

            .hero-category__desc {
                font-size: 0.95rem;
            }

            .hero-category .container {
                flex-direction: column;
            }

            .hero-category__visual img {
                max-width: 280px;
            }

            .section__title {
                font-size: 1.6rem;
            }

            .review-grid {
                grid-template-columns: 1fr;
            }

            .expert-block {
                padding: 24px;
            }

            .cta-section__title {
                font-size: 1.6rem;
            }

            .fab {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .nav__logo {
                font-size: 1.1rem;
            }

            .nav__logo img {
                width: 32px;
                height: 32px;
            }

            .hero-category__title {
                font-size: 1.5rem;
            }

            .hero-category__stats {
                gap: 16px;
            }

            .hero-category__stat b {
                font-size: 1.2rem;
            }

            .btn--large {
                padding: 12px 24px;
                font-size: 0.95rem;
            }

            .section__title {
                font-size: 1.4rem;
            }

            .review-card {
                padding: 20px;
            }

            .fab {
                width: 44px;
                height: 44px;
                left: 8px;
                bottom: 72px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--tight {
            max-width: 960px;
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10,46,28,0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition-base);
        }

        .header.scrolled {
            background: rgba(10,46,28,0.95);
            box-shadow: 0 4px 24px rgba(0,0,0,0.3);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav__logo img {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--accent-gold);
            object-fit: cover;
        }

        .nav__links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav__links a {
            display: block;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav__links a:hover, .nav__links a.active {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }

        .nav__actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
            font-family: var(--font-body);
        }

        .btn--ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--text-secondary);
        }

        .btn--ghost:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .btn--solid {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn--solid:hover {
            background: #FFEA33;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn--large {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 28px;
        }

        .btn--outline {
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
        }

        .btn--outline:hover {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Category Hero */
        .category-hero {
            min-height: 50vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--bg-primary) 0%, #0D3624 40%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
            padding-top: 100px;
            padding-bottom: 60px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255,215,0,0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .category-hero__content {
            flex: 1 1 500px;
            max-width: 600px;
        }

        .category-hero__label {
            display: inline-block;
            background: rgba(255,215,0,0.12);
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .category-hero__title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            color: var(--text-primary);
            font-family: var(--font-heading);
        }

        .category-hero__title span {
            color: var(--accent-gold);
            text-shadow: 0 0 12px rgba(255,215,0,0.4);
        }

        .category-hero__desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 480px;
            line-height: 1.7;
        }

        .category-hero__visual {
            flex: 1 1 360px;
            position: relative;
        }

        .category-hero__visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 0 3px rgba(255,215,0,0.15);
        }

        /* Section Base */
        section {
            padding: 80px 0;
        }

        .section__header {
            margin-bottom: 48px;
        }

        .section__label {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section__title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }

        .section__desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Cards */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            height: 100%;
        }

        .card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card__icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255,215,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }

        .card__title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            font-family: var(--font-heading);
        }

        .card__desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .card--highlight {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-glow);
            background: rgba(255,215,0,0.05);
        }

        /* Grid */
        .grid {
            display: grid;
            gap: 24px;
        }

        .grid--2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .grid--3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid--4 {
            grid-template-columns: repeat(4, 1fr);
        }

        /* Steps */
        .steps {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .step {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition-base);
        }

        .step:hover {
            border-color: var(--accent-gold);
        }

        .step__number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent-gold);
            color: var(--bg-primary);
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-heading);
        }

        .step__content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }

        .step__content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Comparison Table */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .comparison-table th {
            background: var(--bg-secondary);
            color: var(--accent-gold);
            font-weight: 700;
            text-align: left;
            padding: 16px 20px;
            font-family: var(--font-heading);
            font-size: 1rem;
        }

        .comparison-table td {
            padding: 14px 20px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .comparison-table tr.highlight td {
            background: rgba(255,215,0,0.05);
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* FAQ */
        .faq {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq__item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq__item.active {
            border-color: var(--accent-gold);
        }

        .faq__question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-family: var(--font-body);
            transition: var(--transition-base);
        }

        .faq__question:hover {
            color: var(--accent-gold);
        }

        .faq__icon {
            font-size: 1.5rem;
            transition: var(--transition-base);
            color: var(--accent-gold);
        }

        .faq__item.active .faq__icon {
            transform: rotate(45deg);
        }

        .faq__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .faq__item.active .faq__answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, var(--bg-secondary), #0D3624);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,215,0,0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner__title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }

        .cta-banner__desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 24px;
            margin-top: 40px;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer__col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }

        .footer__col p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .footer__col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: 4px 0;
            transition: var(--transition-base);
        }

        .footer__col a:hover {
            color: var(--accent-gold);
            padding-left: 6px;
        }

        .footer__badge {
            display: inline-block;
            background: var(--accent-red);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: 20px;
            margin-top: 12px;
        }

        .footer__bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            cursor: pointer;
            transition: var(--transition-base);
            animation: float 3s ease-in-out infinite;
        }

        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 24px rgba(255,215,0,0.5);
            opacity: 1;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .grid--4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer__grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-hero__title {
                font-size: 2.2rem;
            }
            .section__title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav__links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }
            .nav__links.open {
                display: flex;
            }
            .nav__links a {
                padding: 10px 16px;
                width: 100%;
            }
            .nav__actions .btn--ghost {
                display: none;
            }
            .nav__actions .btn--solid {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .category-hero__title {
                font-size: 1.8rem;
            }
            .category-hero__desc {
                font-size: 1rem;
            }
            .grid--2, .grid--3 {
                grid-template-columns: 1fr;
            }
            .footer__grid {
                grid-template-columns: 1fr;
            }
            .comparison-table {
                font-size: 0.8rem;
            }
            .comparison-table th, .comparison-table td {
                padding: 10px 12px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner__title {
                font-size: 1.5rem;
            }
            .fab {
                left: 10px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            section {
                padding: 48px 0;
            }
            .category-hero {
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .category-hero__title {
                font-size: 1.5rem;
            }
            .section__title {
                font-size: 1.4rem;
            }
            .btn--large {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--tight {
            max-width: 960px;
        }

        /* Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10,46,28,0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition-base);
        }
        .header.scrolled {
            background: rgba(10,46,28,0.95);
            box-shadow: 0 4px 24px rgba(0,0,0,0.3);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .nav__logo img {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--accent-gold);
            object-fit: cover;
        }
        .nav__links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav__links a {
            display: block;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav__links a:hover, .nav__links a.active {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }
        .nav__actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .btn--ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--text-secondary);
        }
        .btn--ghost:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn--solid {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn--solid:hover {
            background: #FFEA33;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn--large {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 28px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Page Banner */
        .page-banner {
            min-height: 45vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--bg-primary) 0%, #0D3624 50%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
            padding-top: 100px;
            padding-bottom: 60px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,215,0,0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner__label {
            display: inline-block;
            background: rgba(255,215,0,0.12);
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .page-banner__title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .page-banner__title span {
            color: var(--accent-gold);
            text-shadow: 0 0 12px rgba(255,215,0,0.4);
        }
        .page-banner__desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
        }

        /* Service Matrix */
        .section-strategy {
            padding: 80px 0;
        }
        .section__header {
            margin-bottom: 48px;
        }
        .section__label {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .section__title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            text-align: left;
        }
        .section__desc {
            color: var(--text-muted);
            font-size: 1rem;
            text-align: left;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
        }
        .strategy-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .strategy-card__icon {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .strategy-card__title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .strategy-card__desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Comparison Table */
        .section-compare {
            padding: 80px 0;
            background: var(--bg-secondary);
        }
        .compare-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .compare-table th {
            background: rgba(255,215,0,0.08);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.95rem;
            text-transform: uppercase;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tr:hover td {
            background: rgba(255,255,255,0.02);
        }

        /* Metrics Dashboard */
        .section-metrics {
            padding: 80px 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .metric-card {
            text-align: left;
            padding: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
        }
        .metric-card__number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            margin-bottom: 8px;
        }
        .metric-card__label {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* FAQ */
        .section-faq {
            padding: 80px 0;
            background: var(--bg-secondary);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            background: var(--bg-card);
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            transition: var(--transition-base);
        }
        .faq-question:hover {
            color: var(--accent-gold);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            color: var(--accent-gold);
        }

        /* CTA */
        .section-cta {
            padding: 80px 0;
        }
        .cta-block {
            background: linear-gradient(135deg, rgba(255,215,0,0.1), rgba(211,47,47,0.15));
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
        }
        .cta-block__title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-block__desc {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* Footer */
        .footer {
            background: #071f13;
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer__col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }
        .footer__col a {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: var(--transition-base);
        }
        .footer__col a:hover {
            color: var(--accent-gold);
        }
        .footer__badge {
            display: inline-block;
            background: rgba(211,47,47,0.15);
            border: 1px solid var(--accent-red);
            color: var(--accent-red);
            padding: 4px 12px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.8rem;
            margin-top: 8px;
        }
        .footer__bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-banner__title {
                font-size: 2.2rem;
            }
            .strategy-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav__links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }
            .nav__links.open {
                display: flex;
            }
            .nav__links a {
                padding: 10px 16px;
                width: 100%;
            }
            .nav__actions .btn--ghost {
                display: none;
            }
            .nav__actions .btn--solid {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .page-banner {
                min-height: 40vh;
                padding-top: 90px;
            }
            .page-banner__title {
                font-size: 1.8rem;
            }
            .page-banner__desc {
                font-size: 0.95rem;
            }
            .section__title {
                font-size: 1.6rem;
            }
            .cta-block {
                padding: 32px 20px;
            }
            .compare-table th, .compare-table td {
                padding: 12px 14px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner__title {
                font-size: 1.5rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .footer__grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(255,255,255,0.03);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #8BB7A8;
            --border-color: rgba(255,215,0,0.15);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 4px 20px rgba(255,215,0,0.1);
            --shadow-glow: 0 0 15px rgba(255,215,0,0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Segoe UI', 'Inter', 'Helvetica Neue', sans-serif;
            --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition-base: 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-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--tight {
            max-width: 960px;
        }
        /* Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10,46,28,0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition-base);
        }
        .header.scrolled {
            background: rgba(10,46,28,0.95);
            box-shadow: 0 4px 24px rgba(0,0,0,0.3);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .nav__logo img {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--accent-gold);
            object-fit: cover;
        }
        .nav__links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav__links a {
            display: block;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav__links a:hover,
        .nav__links a.active {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }
        .nav__actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .btn--ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--text-secondary);
        }
        .btn--ghost:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn--solid {
            background: var(--accent-gold);
            color: var(--bg-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn--solid:hover {
            background: #FFEA33;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn--large {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 28px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav__links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-secondary);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }
            .nav__links.open {
                display: flex;
            }
            .nav__links a {
                padding: 10px 16px;
                width: 100%;
            }
            .nav__actions .btn--ghost {
                display: none;
            }
            .nav__actions .btn--solid {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .nav {
                gap: 8px;
            }
            .nav__logo {
                font-size: 1rem;
            }
            .nav__logo img {
                width: 32px;
                height: 32px;
            }
        }
        /* Page Banner */
        .page-banner {
            min-height: 55vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--bg-primary) 0%, #0D3624 40%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255,215,0,0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner__content {
            max-width: 800px;
        }
        .page-banner__label {
            display: inline-block;
            background: rgba(255,215,0,0.12);
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .page-banner__title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .page-banner__title span {
            color: var(--accent-gold);
            text-shadow: 0 0 12px rgba(255,215,0,0.4);
        }
        .page-banner__desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 600px;
        }
        .page-banner__visual {
            margin-top: 32px;
        }
        .page-banner__visual img {
            width: 100%;
            max-width: 700px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        @media (max-width: 768px) {
            .page-banner__title {
                font-size: 2rem;
            }
            .page-banner__desc {
                font-size: 1rem;
            }
        }
        /* Section Base */
        section {
            padding: 80px 0;
        }
        .section__header {
            margin-bottom: 48px;
        }
        .section__label {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .section__title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .section__desc {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 700px;
        }
        /* Strategy Cards */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            margin-top: 32px;
        }
        .strategy-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent-gold);
            border-radius: 4px 0 0 4px;
            transition: var(--transition-base);
        }
        .strategy-card:hover {
            border-color: var(--accent-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .strategy-card__number {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-gold);
            opacity: 0.3;
            position: absolute;
            top: 10px;
            right: 20px;
            line-height: 1;
        }
        .strategy-card__icon {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .strategy-card__title {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .strategy-card__desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            section {
                padding: 60px 0;
            }
            .section__title {
                font-size: 1.8rem;
            }
        }
        /* Metrics Block */
        .metrics {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .metrics__grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .metric__value {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-gold);
            display: block;
        }
        .metric__label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .metrics__grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric__value {
                font-size: 2rem;
            }
        }
        /* Compare Table */
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 32px;
        }
        .compare-table thead {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }
        .compare-table th {
            padding: 16px;
            font-weight: 700;
            font-size: 0.95rem;
            text-align: left;
        }
        .compare-table td {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .compare-table tbody tr:hover {
            background: rgba(255,215,0,0.05);
        }
        .compare-table__check {
            color: var(--accent-gold);
            font-weight: 700;
        }
        .compare-table__tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(211,47,47,0.2);
            color: var(--accent-red);
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .compare-table {
                font-size: 0.85rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px;
            }
        }
        /* FAQ */
        .faq__list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 32px;
        }
        .faq__item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq__item:hover {
            border-color: var(--accent-gold);
        }
        .faq__question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-primary);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 20px 24px;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-base);
        }
        .faq__question:hover {
            color: var(--accent-gold);
        }
        .faq__icon {
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }
        .faq__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq__answer-inner {
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq__item.open .faq__answer {
            max-height: 300px;
        }
        .faq__item.open .faq__answer-inner {
            padding: 0 24px 20px;
        }
        .faq__item.open .faq__icon {
            transform: rotate(45deg);
        }
        /* CTA Block */
        .cta-block {
            background: linear-gradient(135deg, rgba(255,215,0,0.1), transparent);
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
        }
        .cta-block__title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block__desc {
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        /* Footer */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer__col h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }
        .footer__col a,
        .footer__col p {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 8px;
            transition: var(--transition-base);
        }
        .footer__col a:hover {
            color: var(--accent-gold);
        }
        .footer__badge {
            display: inline-block;
            background: rgba(211,47,47,0.2);
            color: var(--accent-red);
            padding: 6px 14px;
            border-radius: 16px;
            font-weight: 700;
            font-size: 0.8rem;
            margin-top: 8px;
        }
        .footer__bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .footer__grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
