/* roulang page: index */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .hero{padding:88px 0 76px;position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(240,90,60,.08);right:-120px;top:-130px;filter:blur(4px)}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase}
        .hero h1{font-size:clamp(36px,5vw,66px);line-height:1.13;letter-spacing:-2px;margin:18px 0 22px;max-width:720px}
        .hero h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:630px}
        .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
        .hero-note{display:flex;gap:22px;margin-top:33px;color:var(--soft);font-size:13px}
        .hero-note strong{display:block;color:var(--text);font-size:19px}
        .visual-stage{min-height:390px;background:#202126;border:1px solid var(--line-strong);border-radius:24px;position:relative;padding:28px;box-shadow:var(--shadow);overflow:hidden}
        .visual-stage:after{content:"";position:absolute;inset:18px;border:1px solid rgba(184,217,90,.2);border-radius:18px;pointer-events:none}
        .visual-top{display:flex;justify-content:space-between;position:relative;z-index:1;color:var(--muted);font-size:12px}
        .visual-top b{color:var(--lime);font-size:14px}
        .visual-title{position:relative;z-index:1;margin-top:52px;font-size:42px;line-height:1.05;font-weight:900;max-width:300px}
        .visual-title em{color:var(--orange);font-style:normal}
        .visual-lines{position:absolute;right:27px;bottom:38px;width:48%;z-index:1}
        .visual-line{height:8px;background:var(--panel-2);margin-top:12px;border-radius:4px}
        .visual-line:nth-child(1){width:88%;background:var(--orange)}
        .visual-line:nth-child(2){width:67%;background:var(--lime)}
        .visual-line:nth-child(3){width:76%}
        .visual-chip{position:absolute;left:28px;bottom:35px;z-index:1;border:1px solid var(--line-strong);padding:10px 13px;border-radius:10px;color:var(--muted);font-size:12px;background:rgba(23,24,28,.7)}
        .section{padding:78px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}
        .section-head h2{font-size:32px;line-height:1.2;margin-top:7px}
        .section-head p{color:var(--muted);max-width:520px}
        .download-panel{background:var(--orange);border-radius:18px;padding:34px 38px;display:grid;grid-template-columns:1.25fr .75fr;gap:30px;align-items:center}
        .download-panel h2{font-size:32px;line-height:1.25}
        .download-panel p{color:rgba(255,255,255,.82);margin:10px 0 22px;max-width:650px}
        .download-panel .btn-primary{background:#191a1e;color:#fff}
        .download-panel .btn-primary:hover{background:#000}
        .download-meta{border-left:1px solid rgba(255,255,255,.3);padding-left:28px;display:grid;gap:14px}
        .meta-item{display:flex;justify-content:space-between;color:rgba(255,255,255,.76);font-size:13px}
        .meta-item b{color:#fff}
        .latest-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
        .feature-news,.news-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
        .feature-news{padding:30px;min-height:290px;display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
        .feature-news:before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(240,90,60,.28),transparent 55%)}
        .feature-news>*{position:relative}
        .tag{display:inline-flex;align-items:center;color:var(--lime);font-size:12px;font-weight:800;border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;width:max-content}
        .feature-news h3{font-size:27px;line-height:1.3;margin:14px 0 8px;max-width:580px}
        .feature-news p{color:var(--muted);max-width:580px}
        .news-list{padding:8px 20px}
        .news-item{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}
        .news-item:last-child{border-bottom:0}
        .news-item h3{font-size:15px;line-height:1.4;margin:5px 0}
        .news-item p{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:360px}
        .news-date{color:var(--soft);font-size:12px;white-space:nowrap}
        .empty-state{padding:30px;color:var(--muted)}
        .topics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
        .topic{background:var(--panel-3);border:1px solid var(--line);padding:21px;border-radius:12px;transition:.2s;position:relative}
        .topic:hover{border-color:var(--orange);transform:translateY(-3px)}
        .topic-num{color:var(--orange);font-weight:900;font-size:12px}
        .topic h3{font-size:18px;margin:8px 0 4px}
        .topic p{color:var(--muted);font-size:13px;min-height:46px}
        .topic-link{display:inline-block;margin-top:13px;color:var(--lime);font-size:13px}
        .selected{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
        .selected-main{min-height:290px;border-radius:14px;background:linear-gradient(135deg,#613126,#29252a 65%);padding:30px;display:flex;flex-direction:column;justify-content:end}
        .selected-main h3{font-size:28px;line-height:1.3;margin:12px 0}
        .selected-main p{color:#d1c8c2;max-width:600px}
        .selected-side{display:grid;gap:10px}
        .side-story{background:var(--panel);border:1px solid var(--line);padding:18px 20px;border-radius:11px;display:flex;justify-content:space-between;gap:15px;align-items:center;transition:.2s}
        .side-story:hover{border-color:var(--lime)}
        .side-story h3{font-size:15px;line-height:1.4}
        .side-story span{color:var(--soft);font-size:12px;white-space:nowrap}
        .faq-wrap{max-width:860px;margin:auto}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        summary{list-style:none;cursor:pointer;font-size:17px;font-weight:700;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"＋";color:var(--orange);font-size:22px;line-height:1}
        details[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:760px}
        .cta{margin:78px 0 0;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:18px;padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:25px}
        .cta h2{font-size:28px;line-height:1.3}
        .cta p{color:var(--muted);margin-top:7px}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 25px;color:var(--muted)}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:35px;padding-bottom:38px}
        .footer-brand{color:var(--text);font-weight:800;font-size:17px}
        .footer-brand p{font-size:13px;color:var(--muted);font-weight:400;max-width:330px;margin-top:10px}
        .footer-col h3{color:var(--text);font-size:14px;margin-bottom:12px}
        .footer-col a{display:block;font-size:13px;margin:7px 0;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);padding-top:20px;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1050px){
            .main-nav{gap:0}.main-nav a{padding:8px 7px;font-size:13px}.brand{min-width:200px}
            .hero-grid{gap:38px}.topics{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.header-inner{gap:12px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:180px}.brand-mark{width:34px;height:34px}
            .menu-toggle{display:block}.header-action{display:none}
            .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--line);padding:12px 16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
            .hero{padding:58px 0 52px}.hero-grid,.latest-layout,.download-panel,.selected{grid-template-columns:1fr}.hero h1{font-size:40px;letter-spacing:-1px}.hero-copy{font-size:15px}.visual-stage{min-height:300px}.download-meta{border-left:0;border-top:1px solid rgba(255,255,255,.3);padding:18px 0 0}
            .section{padding:56px 0}.section-head{display:block}.section-head p{margin-top:12px}.section-head h2{font-size:27px}.topics{grid-template-columns:1fr}
            .cta{display:block;padding:28px 24px}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}
        }
        @media(max-width:520px){
            .hero h1{font-size:34px}.hero-actions .btn{width:100%}.hero-note{gap:14px}.visual-title{font-size:34px}.visual-stage{padding:22px}
            .download-panel{padding:27px 23px}.download-panel h2{font-size:26px}.feature-news{padding:24px;min-height:270px}.feature-news h3,.selected-main h3{font-size:23px}
            .news-item{grid-template-columns:1fr}.news-date{order:-1}.news-item p{max-width:100%}.footer-grid{grid-template-columns:1fr}
        }

/* roulang page: article */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            background:var(--bg);
            color:var(--text);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            line-height:1.7;
            font-size:15px;
        }
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{
            height:78px;
            border-bottom:1px solid var(--line);
            background:rgba(23,24,28,.96);
            position:sticky;
            top:0;
            z-index:20;
            backdrop-filter:blur(12px);
        }
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{
            width:38px;height:38px;border-radius:10px;background:var(--orange);
            display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px;
        }
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{
            display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px;
        }
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{
            color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;
            transition:.2s;
        }
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{
            display:none;background:none;border:1px solid var(--line-strong);
            color:var(--text);border-radius:8px;padding:7px 10px;
        }
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border:1px solid transparent;border-radius:9px;padding:11px 18px;
            font-weight:700;transition:.2s;white-space:nowrap;
        }
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{
            background:var(--orange-dark);transform:translateY(-2px);
            box-shadow:0 8px 18px rgba(240,90,60,.2);color:#fff;
        }
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{
            outline:3px solid rgba(184,217,90,.55);outline-offset:3px;
        }
        .article-hero{
            padding:72px 0 48px;
            border-bottom:1px solid var(--line);
            background:
                radial-gradient(circle at 85% 20%,rgba(240,90,60,.12),transparent 30%),
                linear-gradient(180deg,#1b1c21 0%,var(--bg) 100%);
        }
        .breadcrumbs{
            display:flex;align-items:center;gap:9px;flex-wrap:wrap;
            color:var(--soft);font-size:13px;margin-bottom:28px;
        }
        .breadcrumbs a{color:var(--muted);transition:.2s}
        .breadcrumbs a:hover{color:var(--lime)}
        .crumb-separator{color:var(--orange)}
        .article-label{
            display:inline-flex;align-items:center;gap:8px;
            border:1px solid rgba(184,217,90,.38);color:var(--lime);
            border-radius:6px;padding:4px 10px;font-size:12px;font-weight:800;
        }
        .article-hero h1{
            max-width:900px;margin:18px 0 18px;
            font-size:clamp(32px,5vw,58px);line-height:1.18;
            letter-spacing:-1.5px;
        }
        .article-intro{max-width:780px;color:var(--muted);font-size:17px;margin:0 0 24px}
        .article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:var(--soft);font-size:13px}
        .meta-dot{width:4px;height:4px;background:var(--orange);border-radius:50%}
        .article-layout{
            display:grid;grid-template-columns:minmax(0,820px) 280px;
            gap:54px;align-items:start;padding:64px 0 78px;
        }
        .article-content{
            background:var(--panel);border:1px solid var(--line);
            border-radius:var(--radius);padding:42px 48px;
            box-shadow:var(--shadow);min-width:0;
        }
        .article-content h2{
            color:var(--text);font-size:28px;line-height:1.35;
            margin:38px 0 15px;padding-left:15px;border-left:3px solid var(--orange);
        }
        .article-content h3{font-size:21px;line-height:1.4;margin:30px 0 12px;color:var(--text)}
        .article-content p{color:#d1d0cc;font-size:16px;line-height:2;margin:0 0 21px}
        .article-content strong{color:#fff}
        .article-content a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
        .article-content ul,.article-content ol{color:#d1d0cc;padding-left:25px;margin:15px 0 24px}
        .article-content li{padding:4px 0}
        .article-content blockquote{
            margin:27px 0;padding:18px 22px;border-left:3px solid var(--lime);
            background:var(--panel-2);color:#d8d8d2;border-radius:0 9px 9px 0;
        }
        .article-content table{
            width:100%;border-collapse:collapse;margin:25px 0;color:#d8d8d2;
            overflow:hidden;border:1px solid var(--line);
        }
        .article-content th,.article-content td{padding:12px 14px;border:1px solid var(--line);text-align:left}
        .article-content th{background:var(--panel-2);color:var(--text)}
        .article-content hr{border:0;border-top:1px solid var(--line);margin:34px 0}
        .article-content figure{margin:28px 0}
        .article-content figcaption{font-size:12px;color:var(--soft);margin-top:8px;text-align:center}
        .empty-state{text-align:center;padding:58px 20px;color:var(--muted)}
        .empty-state strong{display:block;color:var(--text);font-size:22px;margin-bottom:12px}
        .sidebar{position:sticky;top:105px;display:grid;gap:18px}
        .side-card{
            background:var(--panel);border:1px solid var(--line);
            border-radius:var(--radius);padding:23px;
        }
        .side-card h2{font-size:17px;margin:0 0 17px}
        .side-card p{color:var(--muted);font-size:13px;line-height:1.8;margin:0 0 18px}
        .side-links{display:grid;gap:2px}
        .side-links a{
            color:var(--muted);padding:9px 10px;border-radius:7px;font-size:13px;
            transition:.2s;
        }
        .side-links a:hover{background:rgba(240,90,60,.12);color:var(--text)}
        .download-side{background:var(--panel-2);border-color:rgba(240,90,60,.3)}
        .download-side .side-mark{
            width:42px;height:42px;background:var(--orange);border-radius:11px;
            display:grid;place-items:center;font-weight:900;margin-bottom:16px;
        }
        .download-side .btn{width:100%;padding:10px 12px;font-size:13px}
        .related-section{padding:0 0 78px}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}
        .section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        .section-head h2{font-size:30px;line-height:1.25;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .related-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:16px}
        .related-card{
            min-height:190px;background:var(--panel);border:1px solid var(--line);
            border-radius:var(--radius);padding:23px;display:flex;flex-direction:column;
            justify-content:space-between;transition:.25s;
        }
        .related-card:hover{border-color:rgba(240,90,60,.55);transform:translateY(-4px);box-shadow:var(--shadow)}
        .tag{
            display:inline-flex;color:var(--lime);font-size:12px;font-weight:800;
            border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;
            width:max-content;
        }
        .related-card h3{font-size:18px;line-height:1.45;margin:15px 0 8px}
        .related-card p{font-size:13px;color:var(--muted);margin:0}
        .card-link{color:var(--orange);font-size:13px;font-weight:700;margin-top:17px}
        .cta{
            margin:0 0 78px;background:var(--panel-2);border:1px solid var(--line);
            border-radius:18px;padding:34px 38px;display:flex;
            justify-content:space-between;align-items:center;gap:25px;
        }
        .cta h2{font-size:25px;line-height:1.3;margin:0 0 8px}
        .cta p{color:var(--muted);margin:0;max-width:650px}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px;padding-bottom:40px}
        .footer-brand{font-size:18px;font-weight:800}
        .footer-brand p{color:var(--muted);font-size:13px;line-height:1.8;font-weight:400;max-width:360px;margin:13px 0 0}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px;color:var(--text)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{
            border-top:1px solid var(--line);padding-top:18px;color:var(--soft);
            display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:12px;
        }
        @media(max-width:1050px){
            .header-inner{gap:15px}.brand{min-width:210px}
            .main-nav a{padding:8px 7px;font-size:13px}
            .header-action{display:none}
            .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:28px}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.brand{min-width:0;flex:1}
            .brand-name{font-size:13px;max-width:180px}
            .brand-mark{width:35px;height:35px}
            .menu-toggle{display:block}
            .main-nav{
                display:none;position:absolute;left:16px;right:16px;top:76px;
                padding:10px;background:var(--panel);border:1px solid var(--line-strong);
                border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;
            }
            .main-nav.open{display:flex}
            .main-nav a{padding:11px 13px}
            .article-hero{padding:47px 0 38px}
            .article-hero h1{font-size:clamp(30px,9vw,43px);letter-spacing:-.7px}
            .article-intro{font-size:15px}
            .article-layout{display:block;padding:38px 0 55px}
            .article-content{padding:28px 21px}
            .article-content p{font-size:15px;line-height:1.9}
            .article-content h2{font-size:24px}
            .sidebar{position:static;margin-top:25px}
            .related-section{padding-bottom:55px}
            .related-grid{grid-template-columns:1fr}
            .related-card{min-height:150px}
            .cta{margin-bottom:55px;padding:27px 23px;display:block}
            .cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            .footer-brand{grid-column:1/-1}
        }
        @media(max-width:520px){
            .brand-name small{font-size:9px}
            .article-meta{gap:10px}
            .article-content{border-radius:10px}
            .article-content table{font-size:13px;display:block;overflow-x:auto;white-space:nowrap}
            .footer-grid{grid-template-columns:1fr}
            .footer-brand{grid-column:auto}
            .copyright{display:grid;gap:5px}
        }

/* roulang page: category1 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);position:sticky;top:0;z-index:30;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .page-hero{padding:78px 0 60px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
        .page-hero:after{content:"";position:absolute;width:440px;height:440px;border-radius:50%;right:-160px;top:-220px;background:rgba(240,90,60,.09)}
        .breadcrumb{display:flex;gap:10px;color:var(--soft);font-size:13px;margin-bottom:24px;position:relative;z-index:1}
        .breadcrumb a:hover{color:var(--lime)}
        .hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end;position:relative;z-index:1}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        .page-hero h1{font-size:clamp(36px,5vw,64px);line-height:1.12;letter-spacing:-2px;margin:14px 0 20px;max-width:760px}
        .page-hero h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:690px}
        .hero-aside{border-left:2px solid var(--orange);padding:6px 0 6px 24px;color:var(--muted)}
        .hero-aside strong{font-size:28px;display:block;color:var(--text);line-height:1.2;margin-bottom:7px}
        .section{padding:74px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .news-feature{display:grid;grid-template-columns:1.05fr .95fr;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
        .feature-art{min-height:350px;background:linear-gradient(145deg,#693226,#30272a 57%,#26372d);padding:30px;display:flex;align-items:flex-end;position:relative}
        .feature-art:before{content:"NG28";font-size:clamp(80px,12vw,160px);font-weight:900;line-height:1;color:rgba(245,243,238,.08);position:absolute;top:30px;left:28px;letter-spacing:-8px}
        .art-caption{position:relative;z-index:1;color:#e9d6cf;font-size:13px;border:1px solid rgba(255,255,255,.2);padding:8px 11px;border-radius:8px;background:rgba(20,20,22,.35)}
        .feature-body{padding:34px;display:flex;flex-direction:column;justify-content:center}
        .tag{display:inline-flex;align-items:center;color:var(--lime);font-size:12px;font-weight:800;border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;width:max-content}
        .feature-body h3{font-size:28px;line-height:1.35;margin:16px 0 10px}
        .feature-body p{color:var(--muted);margin:0 0 20px}
        .meta{font-size:12px;color:var(--soft);margin-bottom:21px}
        .list-heading{display:flex;align-items:center;gap:12px;margin:52px 0 18px}
        .list-heading h2{font-size:25px;margin:0}
        .list-heading i{width:34px;height:2px;background:var(--orange);display:block}
        .news-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
        .news-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 24px;display:grid;grid-template-columns:1fr auto;gap:18px;transition:.2s}
        .news-card:hover{border-color:var(--orange);transform:translateY(-3px);box-shadow:var(--shadow)}
        .news-card h3{font-size:18px;line-height:1.4;margin:10px 0 7px}
        .news-card p{color:var(--muted);font-size:13px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-date{color:var(--soft);font-size:12px;white-space:nowrap;padding-top:4px}
        .topic-band{background:var(--panel-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}
        .topic{background:var(--panel-3);padding:23px 24px;min-height:142px;transition:.2s}
        .topic:hover{background:var(--panel)}
        .topic-no{color:var(--orange);font-weight:900;font-size:13px}
        .topic h3{font-size:18px;margin:8px 0 4px}
        .topic p{color:var(--muted);font-size:13px;margin:0}
        .faq-wrap{max-width:900px}
        .faq-item{border-top:1px solid var(--line);padding:18px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        .faq-item summary{font-size:17px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary:after{content:"＋";color:var(--orange);font-size:22px;line-height:1}
        .faq-item[open] summary:after{content:"－"}
        .faq-answer{color:var(--muted);padding:12px 40px 2px 0;max-width:780px}
        .cta{margin-top:20px;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:16px;padding:34px 38px;display:flex;justify-content:space-between;align-items:center;gap:24px}
        .cta h2{font-size:26px;margin:0 0 7px}
        .cta p{color:var(--muted);margin:0}
        .site-footer{border-top:1px solid var(--line);padding:50px 0 24px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:42px}
        .footer-brand{font-weight:800;font-size:18px}
        .footer-brand p{color:var(--muted);font-size:13px;font-weight:400;max-width:360px;margin-top:12px}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px;color:var(--lime)}
        .footer-col a{font-size:13px;color:var(--muted);transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);margin-top:38px;padding-top:18px;color:var(--soft);font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1024px){
            .header-inner{gap:15px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}
            .header-action{display:none}.hero-layout{gap:40px}.news-feature{grid-template-columns:1fr 1fr}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:180px}.brand-mark{width:34px;height:34px}
            .menu-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:62px;padding:10px;background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .page-hero{padding:52px 0 45px}.hero-layout{grid-template-columns:1fr;gap:28px}.page-hero h1{letter-spacing:-1px}
            .section{padding:54px 0}.section-head{display:block}.section-head p{margin-top:12px}
            .news-feature{grid-template-columns:1fr}.feature-art{min-height:220px}.feature-body{padding:25px}
            .news-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:1fr 1fr}.cta{display:block;padding:28px 24px}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}
        }
        @media(max-width:520px){
            .topic-grid{grid-template-columns:1fr}.news-card{padding:18px;display:block}.news-date{display:block;margin-top:12px}
            .hero-actions{display:grid}.hero-actions .btn{width:100%}.feature-body h3{font-size:23px}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang page: category2 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .hero{padding:84px 0 70px;position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;width:460px;height:460px;border-radius:50%;background:rgba(240,90,60,.08);right:-150px;top:-150px}
        .hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:70px;align-items:center}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        h1,h2,h3,p{margin-top:0}
        .hero h1{font-size:clamp(36px,5vw,64px);line-height:1.14;letter-spacing:-2px;margin:18px 0 22px;max-width:700px}
        .hero h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:620px}
        .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
        .hero-note{display:flex;gap:28px;margin-top:32px;color:var(--soft);font-size:13px}
        .hero-note strong{display:block;color:var(--text);font-size:19px}
        .download-visual{position:relative;min-height:390px;background:#202126;border:1px solid var(--line-strong);border-radius:24px;padding:28px;box-shadow:var(--shadow);overflow:hidden}
        .download-visual:after{content:"";position:absolute;inset:18px;border:1px solid rgba(184,217,90,.2);border-radius:18px;pointer-events:none}
        .visual-top{position:relative;z-index:1;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
        .visual-center{position:relative;z-index:1;margin:58px auto 0;width:190px;height:190px;border:8px solid #35373d;border-radius:30px;background:var(--panel);display:grid;place-items:center;box-shadow:0 16px 30px rgba(0,0,0,.3)}
        .visual-center b{width:76px;height:76px;border-radius:20px;background:var(--orange);display:grid;place-items:center;font-size:25px;color:#fff}
        .visual-label{position:relative;z-index:1;text-align:center;margin-top:22px;color:var(--text);font-weight:800}
        .visual-label small{display:block;color:var(--muted);font-weight:400;margin-top:4px}
        .section{padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:510px;margin-bottom:0}
        .download-panel{background:var(--orange);border-radius:18px;padding:32px 36px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;box-shadow:var(--shadow)}
        .download-panel h2{font-size:30px;line-height:1.25;margin-bottom:10px}
        .download-panel p{color:rgba(255,255,255,.82);margin-bottom:20px;max-width:650px}
        .download-panel .btn-primary{background:#191a1e;color:#fff}
        .download-panel .btn-primary:hover{background:#000}
        .download-meta{border-left:1px solid rgba(255,255,255,.3);padding-left:28px;display:grid;gap:13px;min-width:210px}
        .meta-item{display:flex;justify-content:space-between;gap:20px;color:rgba(255,255,255,.76);font-size:13px}
        .meta-item b{color:#fff}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .step-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:27px;transition:.2s}
        .step-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
        .step-number{width:40px;height:40px;border-radius:10px;background:rgba(240,90,60,.15);color:var(--orange);display:grid;place-items:center;font-weight:900;font-size:18px;margin-bottom:22px}
        .step-card h3{font-size:20px;margin-bottom:9px}
        .step-card p{color:var(--muted);margin-bottom:0}
        .device-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px;align-items:stretch}
        .device-intro{background:var(--panel-2);border-radius:var(--radius);padding:31px;border:1px solid var(--line)}
        .device-intro h2{font-size:27px;line-height:1.3;margin:12px 0}
        .device-intro p{color:var(--muted)}
        .device-list{display:grid;gap:10px;margin-top:25px}
        .device-list div{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);color:var(--muted)}
        .device-list b{color:var(--text)}
        .access-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:31px;display:flex;flex-direction:column;justify-content:center}
        .access-card h3{font-size:24px;margin-bottom:10px}
        .access-card p{color:var(--muted);max-width:560px}
        .access-row{display:flex;gap:12px;align-items:center;margin-top:16px;flex-wrap:wrap}
        .safe-note{margin-top:23px;padding:15px 17px;background:rgba(184,217,90,.08);border-left:3px solid var(--lime);color:#d4dfa9;font-size:13px}
        .faq-wrap{max-width:900px}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        .faq-item summary{cursor:pointer;font-size:17px;font-weight:700;list-style:none;position:relative;padding-right:35px}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary:after{content:"+";position:absolute;right:4px;color:var(--orange);font-size:24px;line-height:1}
        .faq-item[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:780px}
        .cta{margin:76px 0 0;background:var(--panel-2);border:1px solid var(--line);border-radius:18px;padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .cta h2{font-size:27px;margin-bottom:8px}
        .cta p{color:var(--muted);margin:0}
        .site-footer{border-top:1px solid var(--line);padding:52px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:38px}
        .footer-brand{font-size:18px;font-weight:800}
        .footer-brand p{color:var(--muted);font-size:13px;line-height:1.8;font-weight:400;max-width:360px;margin-top:13px}
        .footer-col{display:flex;flex-direction:column;gap:9px}
        .footer-col h3{font-size:14px;margin-bottom:7px}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:var(--soft);font-size:12px}
        @media(max-width:1024px){
            .header-inner{gap:14px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}.header-action{display:none}
            .hero-grid{gap:38px}.download-meta{min-width:185px}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:70px}.header-inner{justify-content:space-between}
            .brand{min-width:0}.brand-name{font-size:13px;max-width:175px}.brand-mark{width:35px;height:35px}
            .menu-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:78px;padding:10px;background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .header-action{display:block}.header-action .btn{padding:8px 12px;font-size:13px}
            .hero{padding:60px 0 45px}.hero-grid,.device-layout{grid-template-columns:1fr}.hero h1{letter-spacing:-1px}.hero-copy{font-size:16px}
            .download-visual{min-height:340px}.section{padding:56px 0}.section-head{display:block}.section-head p{margin-top:12px}
            .download-panel{grid-template-columns:1fr;padding:27px}.download-meta{border-left:0;border-top:1px solid rgba(255,255,255,.3);padding:18px 0 0}
            .steps{grid-template-columns:1fr}.step-card{padding:23px}
            .cta{display:block;padding:28px}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:7px}
        }
        @media(max-width:520px){
            .brand-name small{font-size:9px}.header-action .btn{font-size:12px;padding:7px 9px}
            .hero h1{font-size:39px}.hero-actions .btn{width:100%}.hero-note{gap:18px}
            .download-visual{min-height:315px}.visual-center{margin-top:38px;width:155px;height:155px}
            .download-panel h2{font-size:25px}.access-row .btn{width:100%}
            .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
        }

/* roulang page: category3 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .guide-hero{padding:70px 0 58px;border-bottom:1px solid var(--line);background:linear-gradient(110deg,#1b1c21 0%,#202126 64%,#28221f 100%)}
        .crumbs{display:flex;gap:9px;align-items:center;color:var(--soft);font-size:13px;margin-bottom:30px}
        .crumbs a:hover{color:var(--lime)}
        .crumbs span{color:var(--orange)}
        .hero-layout{display:grid;grid-template-columns:1fr 390px;gap:72px;align-items:end}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        .guide-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.12;letter-spacing:-2px;margin:16px 0 20px;max-width:720px}
        .guide-hero h1 em{font-style:normal;color:var(--orange)}
        .hero-copy{font-size:17px;color:var(--muted);max-width:680px;margin:0}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
        .guide-summary{border-left:3px solid var(--orange);padding:20px 0 20px 24px}
        .guide-summary strong{font-size:20px;display:block;margin-bottom:8px}
        .guide-summary p{color:var(--muted);margin:0;font-size:14px}
        .section{padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .guide-content{display:grid;grid-template-columns:245px 1fr;gap:45px;align-items:start}
        .chapter-nav{position:sticky;top:104px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:10px}
        .chapter-nav a{display:flex;gap:12px;padding:13px 14px;color:var(--muted);border-radius:9px;transition:.2s}
        .chapter-nav a:hover,.chapter-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .chapter-nav a.active{border-left:2px solid var(--orange)}
        .chapter-nav b{color:var(--lime);font-size:12px}
        .reading-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:35px 40px}
        .reading-panel h2{font-size:25px;margin:0 0 12px}
        .reading-panel h3{font-size:18px;margin:31px 0 9px;color:#fff}
        .reading-panel p{color:var(--muted);margin:0 0 14px}
        .reading-panel ul,.reading-panel ol{color:var(--muted);padding-left:23px;margin:12px 0}
        .reading-panel li{padding:4px 0}
        .tip-box{margin:25px 0;padding:17px 19px;border:1px solid rgba(184,217,90,.3);border-radius:10px;background:rgba(184,217,90,.06);color:#d8e5ae}
        .tip-box strong{color:var(--lime);margin-right:8px}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .step-card{background:var(--panel-3);border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s}
        .step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
        .step-number{font-size:28px;font-weight:900;color:var(--orange);line-height:1;margin-bottom:20px}
        .step-card h3{font-size:18px;margin:0 0 8px}
        .step-card p{color:var(--muted);font-size:14px;margin:0}
        .notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .notice{padding:24px;background:var(--panel-2);border-radius:var(--radius);border:1px solid var(--line)}
        .notice h3{font-size:18px;margin:0 0 8px}
        .notice p{color:var(--muted);margin:0}
        .faq-wrap{max-width:880px}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        .faq-item summary{cursor:pointer;font-weight:700;list-style:none;padding-right:28px;position:relative}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary:after{content:"+";position:absolute;right:3px;color:var(--orange);font-size:22px;top:-4px}
        .faq-item[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 30px 2px 0}
        .cta{margin-top:0;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:18px;padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:25px}
        .cta h2{font-size:27px;margin:0 0 8px}
        .cta p{color:var(--muted);margin:0}
        .site-footer{border-top:1px solid var(--line);padding:52px 0 24px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px}
        .footer-brand{font-weight:800;font-size:18px}
        .footer-brand p{font-size:13px;font-weight:400;color:var(--muted);max-width:370px;margin-top:13px}
        .footer-col{display:flex;flex-direction:column;gap:9px}
        .footer-col h3{font-size:14px;margin:0 0 7px;color:var(--lime)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);margin-top:38px;padding-top:19px;color:var(--soft);font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1050px){
            .header-inner{gap:15px}.brand{min-width:210px}.main-nav a{padding:8px 7px;font-size:13px}.header-action{display:none}
            .hero-layout{gap:40px}.guide-content{grid-template-columns:210px 1fr}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.header-inner{gap:12px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:190px}.brand-mark{width:35px;height:35px}
            .menu-toggle{display:block}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 16px;background:#1b1c20;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
            .main-nav.open{display:flex}.main-nav a{padding:12px 14px}.header-action{display:block}.header-action .btn{padding:8px 11px;font-size:12px}
            .guide-hero{padding:48px 0}.hero-layout{display:block}.guide-summary{margin-top:35px}
            .guide-content{display:block}.chapter-nav{position:static;display:flex;overflow-x:auto;margin-bottom:22px;gap:3px;padding:7px}.chapter-nav a{min-width:max-content;padding:10px 12px;font-size:13px}.chapter-nav b{display:none}
            .reading-panel{padding:26px 22px}.section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:12px}.steps,.notice-grid{grid-template-columns:1fr}.cta{display:block;padding:28px 24px}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}
        }
        @media(max-width:520px){
            .guide-hero h1{font-size:38px;letter-spacing:-1px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr}
            .footer-brand{grid-column:auto}
        }

/* roulang page: category5 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .hero{padding:78px 0 62px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
        .hero:after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;right:-100px;top:-160px;background:rgba(240,90,60,.09);filter:blur(3px)}
        .hero-inner{position:relative;z-index:1;max-width:850px}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        h1{font-size:clamp(36px,5vw,62px);line-height:1.15;letter-spacing:-2px;margin:17px 0 20px}
        h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:720px;margin:0}
        .breadcrumb{margin-top:28px;color:var(--soft);font-size:13px}
        .breadcrumb a{color:var(--muted)}
        .breadcrumb a:hover{color:var(--orange)}
        .section{padding:70px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:28px}
        .section-head h2{font-size:31px;line-height:1.25;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .question-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
        .index-card,.faq-panel,.tip-card,.download-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
        .index-card{padding:22px;position:sticky;top:102px}
        .index-card h3{font-size:16px;margin:0 0 15px}
        .index-link{display:flex;justify-content:space-between;align-items:center;color:var(--muted);padding:11px 12px;border-radius:8px;margin:4px 0;transition:.2s}
        .index-link:hover,.index-link.current{background:rgba(240,90,60,.13);color:var(--text)}
        .index-link.current{border-left:2px solid var(--orange)}
        .index-link b{font-size:12px;color:var(--soft);font-weight:500}
        .faq-panel{padding:8px 27px}
        .faq-item{border-bottom:1px solid var(--line)}
        .faq-item:last-child{border-bottom:0}
        .faq-item summary{list-style:none;cursor:pointer;padding:21px 35px 21px 0;position:relative;font-size:16px;font-weight:700}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary:after{content:"+";position:absolute;right:2px;top:17px;color:var(--lime);font-size:24px;font-weight:400}
        .faq-item[open] summary:after{content:"−";color:var(--orange)}
        .faq-answer{color:var(--muted);padding:0 30px 22px 0}
        .faq-answer p{margin:0 0 10px}
        .faq-answer ol{margin:8px 0 0;padding-left:22px}
        .faq-answer li{margin:5px 0}
        .tag{display:inline-flex;align-items:center;color:var(--lime);font-size:12px;font-weight:800;border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px}
        .tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .tip-card{padding:24px;min-height:165px;transition:.2s}
        .tip-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
        .tip-number{color:var(--orange);font-size:26px;font-weight:900;line-height:1}
        .tip-card h3{font-size:18px;margin:16px 0 7px}
        .tip-card p{color:var(--muted);font-size:14px;margin:0}
        .search-strip{display:flex;gap:12px;background:var(--panel-3);padding:18px;border:1px solid var(--line);border-radius:12px;margin-bottom:26px}
        .search-strip input{flex:1;min-width:0;background:var(--panel);border:1px solid var(--line-strong);border-radius:8px;color:var(--text);padding:10px 13px}
        .search-strip input::placeholder{color:var(--soft)}
        .download-box{padding:34px;display:flex;justify-content:space-between;align-items:center;gap:25px;background:var(--panel-2)}
        .download-box h2{font-size:28px;margin:7px 0 8px}
        .download-box p{color:var(--muted);margin:0;max-width:680px}
        .download-actions{display:flex;gap:10px;flex-wrap:wrap;flex:none}
        .cta{padding:62px 0}
        .cta-inner{border:1px solid rgba(240,90,60,.35);background:linear-gradient(110deg,#342321,#24252a);border-radius:16px;padding:35px 40px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .cta h2{margin:0 0 7px;font-size:27px}
        .cta p{margin:0;color:var(--muted)}
        .site-footer{border-top:1px solid var(--line);padding:46px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:45px}
        .footer-brand{font-size:18px;font-weight:800}
        .footer-brand p{font-size:13px;color:var(--muted);font-weight:400;max-width:360px;margin-top:12px}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px;color:var(--lime)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:17px;display:flex;justify-content:space-between;gap:15px;color:var(--soft);font-size:12px}
        @media(max-width:1024px){
            .header-inner{gap:14px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}
            .question-layout{grid-template-columns:230px 1fr}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:70px}.header-inner{gap:10px}.brand{min-width:0;flex:1}
            .brand-name{font-size:13px;max-width:175px}.brand-mark{width:34px;height:34px}
            .main-nav{display:none;position:absolute;left:16px;right:16px;top:64px;padding:10px;background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .header-action .btn{padding:9px 11px;font-size:12px}.menu-toggle{display:block}
            .hero{padding:58px 0 48px}h1{letter-spacing:-1px}
            .question-layout{grid-template-columns:1fr}.index-card{position:static;overflow-x:auto;white-space:nowrap;padding:12px;display:flex;gap:5px}
            .index-card h3{display:none}.index-link{display:inline-flex;margin:0;padding:9px 11px}
            .tips-grid{grid-template-columns:1fr}.section{padding:52px 0}
            .section-head{display:block}.section-head p{margin-top:12px}
            .download-box,.cta-inner{display:block;padding:27px}.download-actions{margin-top:22px}
            .copyright{display:block}.copyright span{display:block;margin-top:5px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
        }
        @media(max-width:520px){
            .header-action{display:none}.hero-copy{font-size:15px}.faq-panel{padding:5px 18px}
            .search-strip{display:block}.search-strip .btn{width:100%;margin-top:10px}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang page: category4 */
:root{
        --bg:#17181c;
        --panel:#22242a;
        --panel-2:#2b2d33;
        --panel-3:#1d1f24;
        --text:#f5f3ee;
        --muted:#a8a9ad;
        --soft:#777a80;
        --orange:#f05a3c;
        --orange-dark:#cf432d;
        --lime:#b8d95a;
        --line:rgba(245,243,238,.12);
        --line-strong:rgba(245,243,238,.22);
        --radius:14px;
        --shadow:0 18px 40px rgba(0,0,0,.2);
        --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:238px}
    .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
    .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
    .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
    .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
    .header-action{flex:none}
    .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
    .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
    .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
    .page-hero{padding:76px 0 62px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(240,90,60,.09);right:-130px;top:-180px}
    .crumbs{color:var(--soft);font-size:13px;margin-bottom:30px}
    .crumbs a{color:var(--muted)}
    .crumbs a:hover{color:var(--orange)}
    .hero-columns{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
    .page-hero h1{font-size:clamp(38px,5.4vw,70px);line-height:1.12;letter-spacing:-2px;margin:16px 0 20px;max-width:720px}
    .page-hero h1 span{color:var(--orange)}
    .hero-copy{color:var(--muted);font-size:17px;max-width:650px}
    .hero-side{border-left:2px solid var(--orange);padding:12px 0 12px 25px;position:relative;z-index:1}
    .hero-side strong{display:block;font-size:25px;line-height:1.25;margin-bottom:8px}
    .hero-side p{color:var(--muted);margin:0}
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
    .section-head p{color:var(--muted);max-width:520px;margin:0}
    .topic-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .topic-feature{min-height:360px;padding:32px;border-radius:var(--radius);background:linear-gradient(145deg,#653226 0%,#29262b 62%,#22242a 100%);border:1px solid var(--line-strong);display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
    .topic-feature:after{content:"NG28";position:absolute;right:-12px;top:18px;font-size:110px;font-weight:900;line-height:1;color:rgba(245,243,238,.06);transform:rotate(-10deg)}
    .topic-feature>*{position:relative;z-index:1}
    .tag{display:inline-flex;align-items:center;color:var(--lime);font-size:12px;font-weight:800;border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;width:max-content}
    .topic-feature h3{font-size:30px;line-height:1.3;margin:15px 0 9px;max-width:600px}
    .topic-feature p{color:#d1c8c2;max-width:580px;margin:0 0 20px}
    .topic-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 22px}
    .topic-item{display:grid;grid-template-columns:48px 1fr;gap:15px;padding:22px 0;border-bottom:1px solid var(--line)}
    .topic-item:last-child{border-bottom:0}
    .topic-number{font-size:25px;font-weight:900;color:var(--orange)}
    .topic-item h3{font-size:17px;margin:0 0 5px}
    .topic-item p{color:var(--muted);font-size:13px;margin:0}
    .topic-item a{display:inline-block;color:var(--lime);font-size:12px;margin-top:8px}
    .topic-item a:hover{text-decoration:underline}
    .tag-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
    .topic-tag{padding:8px 13px;border:1px solid var(--line-strong);border-radius:8px;color:var(--muted);transition:.2s}
    .topic-tag:hover{border-color:var(--orange);color:var(--text);background:rgba(240,90,60,.08)}
    .update-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .update-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s}
    .update-card:hover{border-color:rgba(240,90,60,.6);transform:translateY(-4px);box-shadow:var(--shadow)}
    .update-card h3{font-size:19px;line-height:1.4;margin:15px 0 9px}
    .update-card p{color:var(--muted);font-size:14px;margin:0 0 18px}
    .card-meta{display:flex;justify-content:space-between;gap:10px;color:var(--soft);font-size:12px;border-top:1px solid var(--line);padding-top:14px}
    .card-meta span:first-child{color:var(--lime)}
    .browse-band{background:var(--panel-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .browse-grid{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}
    .browse-grid h2{font-size:29px;margin:8px 0}
    .browse-grid p{color:var(--muted);margin:0;max-width:700px}
    .faq-wrap{max-width:900px;margin:auto}
    .faq-item{border-top:1px solid var(--line);padding:19px 0}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-item summary{font-weight:700;cursor:pointer;list-style:none;position:relative;padding-right:28px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:3px;color:var(--orange);font-size:22px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:790px}
    .cta{margin:0 0 78px;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:18px;padding:34px 38px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{margin:0 0 6px;font-size:28px}
    .cta p{margin:0;color:var(--muted)}
    .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#141519}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
    .footer-brand{font-size:18px;font-weight:800}
    .footer-brand p{font-size:13px;line-height:1.8;color:var(--muted);font-weight:400;max-width:360px;margin:13px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{font-size:14px;margin:0 0 7px;color:var(--text)}
    .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--orange);padding-left:3px}
    .copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:17px;display:flex;justify-content:space-between;gap:15px;color:var(--soft);font-size:12px}
    @media(max-width:1024px){
        .header-inner{gap:15px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}
        .hero-columns,.topic-layout{gap:35px}.update-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
        .container{width:min(var(--max),calc(100% - 32px))}
        .site-header{height:70px}.header-inner{gap:10px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:175px}
        .main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;background:var(--panel);border:1px solid var(--line-strong);padding:10px;border-radius:0 0 12px 12px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
        .main-nav.open{display:flex}.main-nav a{padding:11px 13px}.header-action{display:none}.menu-toggle{display:block}
        .page-hero{padding:50px 0}.hero-columns,.topic-layout{grid-template-columns:1fr}.hero-side{margin-top:24px}
        .section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:13px}.section-head h2{font-size:28px}
        .update-grid{grid-template-columns:1fr}.browse-grid{grid-template-columns:1fr}.cta{display:block;padding:28px;margin-bottom:55px}.cta .btn{margin-top:20px}
        .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}
    }
    @media(max-width:520px){
        .brand-mark{width:34px;height:34px}.brand-name small{font-size:9px}.page-hero h1{font-size:39px;letter-spacing:-1px}
        .hero-copy{font-size:15px}.topic-feature{min-height:330px;padding:25px}.topic-feature h3{font-size:25px}.topic-list{padding:8px 16px}
        .topic-item{grid-template-columns:36px 1fr;gap:10px}.topic-number{font-size:21px}.browse-grid h2{font-size:25px}
        .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category6 */
:root{
        --bg:#17181c;
        --panel:#22242a;
        --panel-2:#2b2d33;
        --panel-3:#1d1f24;
        --text:#f5f3ee;
        --muted:#a8a9ad;
        --soft:#777a80;
        --orange:#f05a3c;
        --orange-dark:#cf432d;
        --lime:#b8d95a;
        --line:rgba(245,243,238,.12);
        --line-strong:rgba(245,243,238,.22);
        --radius:14px;
        --shadow:0 18px 40px rgba(0,0,0,.2);
        --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
        margin:0;
        background:var(--bg);
        color:var(--text);
        font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
        line-height:1.7;
        font-size:15px;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{
        height:78px;
        border-bottom:1px solid var(--line);
        background:rgba(23,24,28,.95);
        position:sticky;
        top:0;
        z-index:20;
        backdrop-filter:blur(12px);
    }
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:238px}
    .brand-mark{
        width:38px;height:38px;border-radius:10px;background:var(--orange);
        display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px;
    }
    .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
    .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1}
    .main-nav a{
        color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;
        transition:.2s;
    }
    .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
    .header-action{flex:none}
    .menu-toggle{
        display:none;background:none;border:1px solid var(--line-strong);
        color:var(--text);border-radius:8px;padding:7px 10px;
    }
    .btn{
        display:inline-flex;align-items:center;justify-content:center;gap:8px;
        border:1px solid transparent;border-radius:9px;padding:11px 18px;
        font-weight:700;transition:.2s;white-space:nowrap;
    }
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
    .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
    .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
        outline:3px solid rgba(184,217,90,.55);outline-offset:3px
    }
    .page-hero{
        position:relative;
        overflow:hidden;
        padding:76px 0 68px;
        border-bottom:1px solid var(--line);
    }
    .page-hero:after{
        content:"";
        position:absolute;
        width:430px;height:430px;
        right:-150px;top:-180px;
        border:1px solid rgba(184,217,90,.17);
        border-radius:50%;
        box-shadow:0 0 0 36px rgba(240,90,60,.04),0 0 0 72px rgba(184,217,90,.025);
    }
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--soft);font-size:13px;margin-bottom:22px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb span{color:var(--orange)}
    .hero-content{position:relative;z-index:1;max-width:780px}
    .eyebrow,.section-kicker{
        color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px;
    }
    .page-hero h1{
        font-size:clamp(36px,5vw,62px);line-height:1.13;
        letter-spacing:-2px;margin:16px 0 20px;
    }
    .page-hero h1 em{font-style:normal;color:var(--orange)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:680px;margin:0}
    .hero-points{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .hero-points span{
        border:1px solid var(--line-strong);background:rgba(43,45,51,.58);
        color:#d8d7d2;border-radius:8px;padding:8px 12px;font-size:13px;
    }
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
    .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
    .section-head p{color:var(--muted);max-width:550px;margin:0}
    .about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:stretch}
    .about-card,.contact-card,.route-card,.notice-card{
        background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
        box-shadow:0 8px 25px rgba(0,0,0,.12);
    }
    .about-card{padding:34px}
    .about-card h3{font-size:25px;line-height:1.3;margin:0 0 16px}
    .about-card p{color:var(--muted);margin:0 0 15px}
    .about-card p:last-child{margin-bottom:0}
    .accent-line{width:54px;height:4px;background:var(--orange);border-radius:3px;margin-bottom:25px}
    .route-list{display:grid;gap:10px}
    .route-card{padding:22px 24px;display:flex;align-items:center;gap:16px;transition:.2s}
    .route-card:hover{border-color:rgba(240,90,60,.6);transform:translateX(4px)}
    .route-number{
        flex:none;width:34px;height:34px;border-radius:9px;
        display:grid;place-items:center;background:rgba(184,217,90,.13);
        color:var(--lime);font-weight:800;font-size:13px;
    }
    .route-card h3{font-size:16px;margin:0 0 2px}
    .route-card p{margin:0;color:var(--muted);font-size:13px}
    .route-arrow{margin-left:auto;color:var(--orange);font-size:20px}
    .contact-section{background:var(--panel-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .contact-layout{display:grid;grid-template-columns:.76fr 1.24fr;gap:28px;align-items:start}
    .contact-intro{padding:20px 0}
    .contact-intro h2{font-size:34px;line-height:1.25;margin:9px 0 16px}
    .contact-intro>p{color:var(--muted);max-width:430px}
    .contact-notes{margin-top:30px;display:grid;gap:15px}
    .note-row{display:flex;gap:12px;align-items:flex-start}
    .note-icon{
        width:30px;height:30px;border-radius:8px;background:rgba(240,90,60,.14);
        color:var(--orange);display:grid;place-items:center;font-weight:800;flex:none;
    }
    .note-row strong{display:block;font-size:14px;margin-bottom:1px}
    .note-row span{display:block;color:var(--muted);font-size:13px}
    .contact-card{padding:32px;background:var(--panel)}
    .contact-card h3{font-size:22px;margin:0 0 6px}
    .form-intro{color:var(--muted);font-size:13px;margin:0 0 23px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .field{display:flex;flex-direction:column;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{font-weight:700;font-size:13px;color:#deddd8}
    .field input,.field textarea,.field select{
        width:100%;border:1px solid var(--line-strong);border-radius:9px;
        background:#191a1e;color:var(--text);padding:11px 13px;
        transition:.2s;appearance:none;
    }
    .field input::placeholder,.field textarea::placeholder{color:#666970}
    .field input:focus,.field textarea:focus,.field select:focus{
        border-color:var(--lime);background:#1c1e22;outline:none;
        box-shadow:0 0 0 3px rgba(184,217,90,.1)
    }
    .field textarea{min-height:132px;resize:vertical}
    .form-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:22px}
    .form-tip{color:var(--soft);font-size:12px;margin:0}
    .form-status{font-size:13px;color:var(--lime);min-height:24px;margin:13px 0 0}
    .links-section{padding-top:68px}
    .links-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .link-panel{
        min-height:165px;background:var(--panel);border:1px solid var(--line);
        padding:25px;border-radius:var(--radius);position:relative;overflow:hidden;transition:.2s;
    }
    .link-panel:before{content:"";position:absolute;right:-25px;bottom:-38px;width:120px;height:120px;border:1px solid rgba(240,90,60,.18);border-radius:50%}
    .link-panel:hover{border-color:var(--orange);transform:translateY(-3px);box-shadow:var(--shadow)}
    .link-panel .mini-label{color:var(--lime);font-size:11px;font-weight:800;letter-spacing:1px}
    .link-panel h3{font-size:19px;margin:10px 0 6px;position:relative}
    .link-panel p{color:var(--muted);font-size:13px;margin:0;max-width:250px;position:relative}
    .link-panel b{position:absolute;right:22px;top:24px;color:var(--orange);font-size:20px}
    .notice-strip{
        margin-top:28px;background:rgba(184,217,90,.08);border:1px solid rgba(184,217,90,.24);
        padding:17px 20px;border-radius:10px;color:#c8d59d;font-size:13px;
    }
    .cta{
        margin:10px 0 78px;background:var(--panel-2);border:1px solid var(--line-strong);
        border-radius:18px;padding:34px 38px;display:flex;align-items:center;
        justify-content:space-between;gap:25px;
    }
    .cta h2{font-size:26px;margin:0 0 7px}
    .cta p{color:var(--muted);margin:0}
    .site-footer{border-top:1px solid var(--line);padding:48px 0 23px;background:#141519}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:38px}
    .footer-brand{font-size:18px;font-weight:800}
    .footer-brand p{font-size:13px;font-weight:400;color:var(--muted);max-width:370px;margin:12px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{font-size:13px;color:var(--lime);margin:0 0 6px}
    .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--orange)}
    .copyright{
        border-top:1px solid var(--line);margin-top:35px;padding-top:18px;
        display:flex;justify-content:space-between;gap:15px;color:var(--soft);font-size:12px;
    }
    @media(max-width:1100px){
        .header-inner{gap:15px}.brand{min-width:205px}.brand-name{font-size:14px}
        .main-nav a{padding:8px 7px;font-size:13px}.header-action .btn{padding:10px 12px}
    }
    @media(max-width:900px){
        .site-header{height:70px}.menu-toggle{display:block;margin-left:auto}
        .header-action{order:2}.menu-toggle{order:3}
        .main-nav{
            display:none;position:absolute;top:70px;left:0;right:0;padding:13px 24px 18px;
            background:#1a1b20;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
            flex-direction:column;align-items:stretch;gap:3px;
        }
        .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
        .hero-grid,.about-grid,.contact-layout{grid-template-columns:1fr}
        .page-hero{padding:59px 0}.links-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:620px){
        .container{width:min(var(--max),calc(100% - 32px))}
        .brand{min-width:0;flex:1}.brand-mark{width:34px;height:34px}.brand-name{font-size:12px;max-width:165px}
        .brand-name small{font-size:9px}.header-action .btn{font-size:12px;padding:8px 9px}
        .page-hero h1{letter-spacing:-1px;font-size:39px}.hero-copy{font-size:15px}
        .section{padding:57px 0}.section-head{display:block}.section-head h2{font-size:27px;margin-bottom:10px}
        .about-card,.contact-card{padding:24px}.links-grid{grid-template-columns:1fr}
        .form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}
        .form-bottom{display:block}.form-bottom .btn{width:100%;margin-top:13px}
        .cta{display:block;padding:27px 24px;margin-bottom:55px}.cta h2{font-size:23px}
        .cta .btn{width:100%;margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
        .footer-brand{grid-column:1/-1}.copyright{display:block;line-height:2}
        .copyright span{display:block}
    }
    @media(max-width:380px){
        .header-action{display:none}.brand-name{max-width:190px}
    }

/* roulang page: category3 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            background:var(--bg);
            color:var(--text);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            line-height:1.7;
            font-size:15px;
        }
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{
            height:78px;
            border-bottom:1px solid var(--line);
            background:rgba(23,24,28,.94);
            position:sticky;
            top:0;
            z-index:20;
            backdrop-filter:blur(12px);
        }
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{
            width:38px;height:38px;border-radius:10px;background:var(--orange);
            display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px;
        }
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{
            color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s;
        }
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{
            display:none;background:none;border:1px solid var(--line-strong);
            color:var(--text);border-radius:8px;padding:7px 10px;
        }
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border:1px solid transparent;border-radius:9px;padding:11px 18px;
            font-weight:700;transition:.2s;white-space:nowrap;
        }
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .page-hero{
            padding:76px 0 70px;
            border-bottom:1px solid var(--line);
            position:relative;
            overflow:hidden;
        }
        .page-hero:after{
            content:"";
            position:absolute;width:380px;height:380px;border-radius:50%;
            right:-120px;top:-180px;background:rgba(240,90,60,.1);
        }
        .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--soft);font-size:13px;margin-bottom:25px}
        .breadcrumb a:hover{color:var(--lime)}
        .breadcrumb span{color:var(--orange)}
        .hero-layout{display:grid;grid-template-columns:1fr 360px;gap:70px;align-items:end;position:relative;z-index:1}
        .eyebrow,.section-kicker{
            color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px;
        }
        .page-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.15;letter-spacing:-2px;margin:16px 0 20px;max-width:720px}
        .page-hero h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:690px}
        .hero-aside{
            background:var(--panel);border:1px solid var(--line-strong);border-radius:18px;
            padding:25px;box-shadow:var(--shadow);
        }
        .aside-title{font-size:18px;font-weight:800;margin-bottom:17px}
        .progress-line{height:7px;background:var(--panel-2);border-radius:20px;overflow:hidden;margin:12px 0 18px}
        .progress-line i{display:block;width:68%;height:100%;background:var(--orange);border-radius:20px}
        .aside-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}
        .section{padding:78px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:540px;margin:0}
        .guide-layout{display:grid;grid-template-columns:245px 1fr;gap:42px;align-items:start}
        .guide-index{
            position:sticky;top:105px;background:var(--panel-3);
            border:1px solid var(--line);border-radius:var(--radius);padding:14px;
        }
        .guide-index strong{display:block;padding:10px 12px 14px;font-size:14px}
        .guide-index a{
            display:block;padding:10px 12px;color:var(--muted);border-radius:8px;
            border-left:2px solid transparent;transition:.2s;
        }
        .guide-index a:hover,.guide-index a.active{background:rgba(240,90,60,.12);color:var(--text);border-left-color:var(--orange)}
        .reading{min-width:0}
        .chapter{
            padding:0 0 34px;margin-bottom:34px;border-bottom:1px solid var(--line);
            scroll-margin-top:105px;
        }
        .chapter:last-child{border-bottom:0;margin-bottom:0}
        .chapter h2{font-size:25px;margin:0 0 14px;line-height:1.35}
        .chapter h3{font-size:18px;margin:23px 0 8px}
        .chapter p{color:var(--muted);margin:0 0 14px}
        .chapter ol,.chapter ul{color:var(--muted);padding-left:24px;margin:12px 0}
        .chapter li{padding:4px 0}
        .notice{
            display:flex;gap:13px;background:rgba(184,217,90,.08);
            border:1px solid rgba(184,217,90,.26);border-radius:11px;padding:15px 17px;
            color:#d7e4a5;margin-top:18px;
        }
        .notice b{color:var(--lime);white-space:nowrap}
        .step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
        .step-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;transition:.2s}
        .step-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
        .step-no{color:var(--orange);font-size:13px;font-weight:900;letter-spacing:1px}
        .step-card h3{font-size:17px;margin:10px 0 6px}
        .step-card p{font-size:13px;margin:0}
        .tip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
        .tip-card{background:var(--panel-2);border-radius:12px;padding:19px;border:1px solid var(--line)}
        .tip-card h3{margin:0 0 7px;font-size:17px}
        .tip-card p{font-size:13px;margin:0}
        .device-table{width:100%;border-collapse:collapse;margin-top:18px;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
        .device-table th,.device-table td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line)}
        .device-table th{color:var(--text);font-size:13px;background:var(--panel-2)}
        .device-table td{color:var(--muted);font-size:13px}
        .device-table tr:last-child td{border-bottom:0}
        .faq-section{background:var(--panel-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .faq-wrap{max-width:860px;margin:0 auto}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        .faq-item summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:30px}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary:after{content:"+";position:absolute;right:3px;color:var(--orange);font-size:22px;top:-4px}
        .faq-item[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:760px}
        .cta{
            margin:78px 0 0;background:var(--panel-2);border:1px solid var(--line-strong);
            border-radius:18px;padding:34px 38px;display:flex;align-items:center;
            justify-content:space-between;gap:25px;
        }
        .cta h2{margin:0 0 8px;font-size:26px}
        .cta p{color:var(--muted);margin:0;max-width:650px}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
        .footer-brand{font-weight:800;font-size:18px}
        .footer-brand p{font-size:13px;color:var(--muted);font-weight:400;max-width:380px;margin:13px 0 0}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:35px;padding-top:18px;color:var(--soft);font-size:12px}
        @media(max-width:1100px){
            .header-inner{gap:14px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}
            .hero-layout{grid-template-columns:1fr 310px;gap:35px}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:70px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:185px}
            .brand-mark{width:34px;height:34px}.header-action{display:none}.menu-toggle{display:block}
            .main-nav{
                display:none;position:absolute;left:16px;right:16px;top:77px;
                flex-direction:column;align-items:stretch;background:var(--panel);
                border:1px solid var(--line-strong);border-radius:12px;padding:8px;box-shadow:var(--shadow);
            }
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .page-hero{padding:54px 0 52px}.hero-layout{display:block}
            .hero-aside{margin-top:30px;max-width:430px}.page-hero h1{letter-spacing:-1px}
            .section{padding:56px 0}.section-head{display:block}.section-head p{margin-top:12px}
            .guide-layout{display:block}.guide-index{position:static;margin-bottom:30px;overflow-x:auto;white-space:nowrap}
            .guide-index strong{display:none}.guide-index a{display:inline-block;border-left:0;border-bottom:2px solid transparent}
            .guide-index a:hover,.guide-index a.active{border-left:0;border-bottom-color:var(--orange)}
            .step-grid{grid-template-columns:1fr}.tip-grid{grid-template-columns:1fr}
            .cta{display:block;padding:28px 24px}.cta .btn{margin-top:22px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
            .copyright{display:block}.copyright span{display:block;margin-top:5px}
        }
        @media(max-width:520px){
            .brand-name{font-size:12px;max-width:150px}.page-hero h1{font-size:37px}
            .hero-copy{font-size:15px}.breadcrumb{font-size:12px}
            .device-table{display:block;overflow-x:auto;white-space:nowrap}
            .notice{display:block}.notice b{display:block;margin-bottom:4px}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang page: category2 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            background:var(--bg);
            color:var(--text);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            font-size:15px;
            line-height:1.7;
        }
        a{color:inherit;text-decoration:none}
        a:hover{color:inherit}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{
            height:78px;
            border-bottom:1px solid var(--line);
            background:rgba(23,24,28,.95);
            position:sticky;
            top:0;
            z-index:20;
            backdrop-filter:blur(12px);
        }
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{
            width:38px;height:38px;border-radius:10px;background:var(--orange);
            display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px;
        }
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{
            color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;
            transition:.2s;
        }
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{
            display:none;background:none;border:1px solid var(--line-strong);
            color:var(--text);border-radius:8px;padding:7px 10px;
        }
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border:1px solid transparent;border-radius:9px;padding:11px 18px;
            font-weight:700;transition:.2s;white-space:nowrap;
        }
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
            outline:3px solid rgba(184,217,90,.55);outline-offset:3px;
        }
        .page-hero{
            padding:76px 0 64px;
            border-bottom:1px solid var(--line);
            position:relative;
            overflow:hidden;
        }
        .page-hero:before{
            content:"";position:absolute;width:430px;height:430px;border-radius:50%;
            background:rgba(240,90,60,.08);right:-150px;top:-180px;
        }
        .breadcrumb{display:flex;gap:10px;color:var(--soft);font-size:13px;margin-bottom:27px}
        .breadcrumb a:hover{color:var(--lime)}
        .breadcrumb span{color:var(--line-strong)}
        .hero-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:70px;align-items:end}
        .eyebrow,.section-kicker{
            color:var(--lime);font-size:12px;font-weight:800;
            letter-spacing:1.5px;text-transform:uppercase;
        }
        h1{
            font-size:clamp(38px,5vw,64px);line-height:1.13;
            letter-spacing:-2px;margin:16px 0 20px;max-width:700px;
        }
        h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:650px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
        .download-ticket{
            background:var(--panel);border:1px solid var(--line-strong);
            border-radius:18px;padding:25px;position:relative;box-shadow:var(--shadow);
        }
        .download-ticket:after{
            content:"NG28";position:absolute;right:20px;top:13px;
            color:rgba(184,217,90,.18);font-size:44px;font-weight:900;letter-spacing:-3px;
        }
        .ticket-top{display:flex;align-items:center;gap:14px;padding-bottom:22px;border-bottom:1px solid var(--line)}
        .app-icon{
            width:56px;height:56px;border-radius:15px;background:var(--orange);
            display:grid;place-items:center;font-size:20px;font-weight:900;color:white;
        }
        .ticket-top h2{font-size:20px;margin:0;line-height:1.25}
        .ticket-top p{color:var(--muted);font-size:13px;margin:4px 0 0}
        .ticket-list{list-style:none;padding:18px 0 4px;margin:0;display:grid;gap:12px}
        .ticket-list li{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}
        .ticket-list strong{color:var(--text);font-weight:600}
        .section{padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .download-board{
            display:grid;grid-template-columns:1fr 1fr;gap:0;
            background:var(--orange);border-radius:18px;overflow:hidden;
            box-shadow:var(--shadow);
        }
        .download-main{padding:38px 42px}
        .download-main h2{font-size:32px;line-height:1.25;margin:10px 0 13px}
        .download-main p{color:rgba(255,255,255,.82);max-width:520px}
        .download-main .btn-primary{background:#191a1e;color:#fff;margin-top:15px}
        .download-main .btn-primary:hover{background:#000}
        .download-side{background:#c94b34;padding:36px 38px;display:flex;align-items:center;gap:25px}
        .qr-box{
            flex:none;width:132px;height:132px;background:#fff;border-radius:10px;
            padding:10px;display:grid;place-items:center;
        }
        .qr-pattern{
            width:100%;height:100%;
            background:
            linear-gradient(90deg,#17181c 10px,transparent 10px 18px,#17181c 18px 27px,transparent 27px 35px,#17181c 35px 44px,transparent 44px),
            linear-gradient(#17181c 10px,transparent 10px 18px,#17181c 18px 27px,transparent 27px 35px,#17181c 35px 44px,transparent 44px);
            background-size:44px 44px;
            position:relative;
        }
        .qr-pattern:before,.qr-pattern:after{
            content:"";position:absolute;width:28px;height:28px;border:6px solid #17181c;background:#fff;
        }
        .qr-pattern:before{left:0;top:0}.qr-pattern:after{right:0;bottom:0}
        .qr-copy h3{font-size:19px;margin:0 0 8px}
        .qr-copy p{color:rgba(255,255,255,.78);font-size:13px;margin:0}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .step{
            background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
            padding:25px;min-height:190px;transition:.2s;
        }
        .step:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
        .step-number{
            width:34px;height:34px;border-radius:9px;background:rgba(240,90,60,.15);
            color:var(--orange);display:grid;place-items:center;font-weight:900;margin-bottom:25px;
        }
        .step h3{font-size:19px;margin:0 0 8px}
        .step p{color:var(--muted);font-size:14px;margin:0}
        .device-section{background:var(--panel-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .device-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:65px;align-items:center}
        .device-copy h2{font-size:32px;line-height:1.25;margin:8px 0 15px}
        .device-copy p{color:var(--muted);margin:0 0 20px}
        .device-note{border-left:3px solid var(--lime);padding:12px 0 12px 16px;color:var(--muted);font-size:13px}
        .device-table{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel)}
        .device-row{display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:15px;padding:17px 21px;border-bottom:1px solid var(--line);align-items:center}
        .device-row:last-child{border-bottom:0}
        .device-row.head{background:var(--panel-2);color:var(--soft);font-size:12px;font-weight:700}
        .device-row:not(.head){color:var(--muted);font-size:14px}
        .device-row strong{color:var(--text)}
        .status{color:var(--lime);font-size:12px;font-weight:700}
        .info-strip{display:flex;justify-content:space-between;align-items:center;gap:25px;border:1px solid var(--line);border-radius:14px;padding:21px 25px;background:var(--panel)}
        .info-strip h3{font-size:17px;margin:0 0 3px}.info-strip p{color:var(--muted);font-size:13px;margin:0}
        .info-badges{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}
        .tag{
            display:inline-flex;align-items:center;color:var(--lime);font-size:12px;font-weight:800;
            border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;
        }
        .faq-wrap{max-width:900px;margin:0 auto}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        summary{cursor:pointer;font-size:17px;font-weight:700;list-style:none;position:relative;padding-right:35px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";position:absolute;right:5px;color:var(--orange);font-size:23px;line-height:1}
        details[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:780px}
        .cta{
            margin:0 0 78px;background:var(--panel-2);border:1px solid var(--line-strong);
            border-radius:18px;padding:34px 40px;display:flex;justify-content:space-between;
            align-items:center;gap:25px;
        }
        .cta h2{font-size:27px;margin:0 0 6px}.cta p{color:var(--muted);margin:0}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:45px;padding-bottom:36px}
        .footer-brand{font-size:18px;font-weight:800}.footer-brand p{font-size:13px;color:var(--muted);font-weight:400;max-width:340px;margin:12px 0 0}
        .footer-col{display:flex;flex-direction:column;gap:8px}.footer-col h3{font-size:14px;margin:0 0 7px;color:var(--lime)}
        .footer-col a{font-size:13px;color:var(--muted);transition:.2s}.footer-col a:hover{color:var(--orange)}
        .copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding-top:19px;color:var(--soft);font-size:12px}
        @media(max-width:1100px){
            .header-inner{gap:15px}.brand{min-width:210px}.main-nav a{padding-left:7px;padding-right:7px;font-size:13px}.header-action{display:none}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.header-inner{gap:12px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:170px}.brand-name small{font-size:9px}.brand-mark{width:35px;height:35px}
            .menu-toggle{display:block}.main-nav{
                display:none;position:absolute;top:68px;left:16px;right:16px;padding:10px;
                background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;
                flex-direction:column;align-items:stretch;box-shadow:var(--shadow);
            }
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .page-hero{padding:52px 0 48px}.hero-layout,.device-grid{grid-template-columns:1fr;gap:32px}
            h1{font-size:42px;letter-spacing:-1px}.hero-copy{font-size:16px}
            .download-board{grid-template-columns:1fr}.download-side{padding:28px 30px}
            .steps{grid-template-columns:1fr}.step{min-height:0}
            .section{padding:57px 0}.section-head{display:block}.section-head p{margin-top:12px}
            .device-grid{gap:28px}.device-copy h2{font-size:28px}
            .info-strip,.cta{display:block}.info-badges{justify-content:flex-start;margin-top:17px}
            .cta{padding:28px 25px}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:7px}
        }
        @media(max-width:520px){
            .brand-name{max-width:135px;font-size:12px}.hero-actions .btn{width:100%}
            .download-main{padding:29px 25px}.download-main h2{font-size:27px}.download-side{display:block;padding:25px}
            .qr-box{margin-bottom:18px}.device-row{grid-template-columns:1fr 1.3fr;gap:8px;padding:14px}.device-row span:last-child{grid-column:2}
            .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
            h1{font-size:36px}
        }

/* roulang page: category4 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .hero{padding:82px 0 70px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(240,90,60,.08);right:-140px;top:-180px}
        .hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;position:relative}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        h1{font-size:clamp(38px,5vw,64px);line-height:1.13;letter-spacing:-2px;margin:17px 0 21px}
        h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:620px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:29px}
        .hero-facts{display:flex;gap:30px;margin-top:34px;color:var(--soft);font-size:13px}
        .hero-facts strong{display:block;color:var(--text);font-size:20px}
        .topic-board{background:var(--panel);border:1px solid var(--line-strong);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
        .board-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}
        .board-label{font-size:12px;color:var(--muted)}
        .status-dot{width:9px;height:9px;border-radius:50%;background:var(--lime);display:inline-block;margin-right:7px}
        .board-title{font-size:30px;font-weight:850;line-height:1.25;margin:34px 0 25px;max-width:370px}
        .board-title em{font-style:normal;color:var(--orange)}
        .topic-lines{display:grid;gap:12px}
        .topic-line{display:flex;justify-content:space-between;gap:16px;padding:13px 14px;background:var(--panel-3);border-left:3px solid var(--orange);border-radius:7px;color:var(--muted)}
        .topic-line b{color:var(--text);font-size:14px}
        .section{padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:510px;margin:0}
        .content-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:20px}
        .feature-card{min-height:350px;background:linear-gradient(145deg,#613126,#28252a 65%);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
        .feature-card:after{content:"NG28";position:absolute;right:-18px;top:28px;font-size:92px;font-weight:900;color:rgba(245,243,238,.07);transform:rotate(-12deg)}
        .feature-card>*{position:relative;z-index:1}
        .tag{display:inline-flex;color:var(--lime);font-size:12px;font-weight:800;border:1px solid rgba(184,217,90,.35);padding:3px 8px;border-radius:5px;width:max-content}
        .feature-card h3{font-size:28px;line-height:1.3;margin:15px 0 9px;max-width:560px}
        .feature-card p{color:#d1c8c2;max-width:580px}
        .list-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:8px 21px}
        .list-item{display:grid;grid-template-columns:42px 1fr auto;gap:14px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
        .list-item:last-child{border-bottom:0}
        .list-number{color:var(--orange);font-size:22px;font-weight:800}
        .list-item h3{font-size:15px;line-height:1.4;margin:0 0 4px}
        .list-item p{font-size:12px;color:var(--muted);margin:0}
        .date{font-size:12px;color:var(--soft);white-space:nowrap}
        .index-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
        .index-item{background:var(--panel-3);border:1px solid var(--line);padding:22px;border-radius:12px;transition:.2s}
        .index-item:hover{border-color:var(--orange);transform:translateY(-3px)}
        .index-item .index-no{color:var(--orange);font-weight:800;font-size:13px}
        .index-item h3{font-size:19px;margin:10px 0 6px}
        .index-item p{margin:0;color:var(--muted);font-size:13px}
        .index-item a{display:inline-block;margin-top:16px;color:var(--lime);font-size:13px}
        .guide-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
        .guide-intro{padding:32px;background:var(--panel-2)}
        .guide-intro h2{font-size:29px;line-height:1.25;margin:10px 0 14px}
        .guide-intro p{color:var(--muted)}
        .guide-points{padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:22px}
        .guide-point{border-bottom:1px solid var(--line);padding-bottom:17px}
        .guide-point strong{display:block;font-size:16px;margin-bottom:5px}
        .guide-point span{color:var(--muted);font-size:13px}
        .faq-wrap{max-width:860px;margin:auto}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"＋";color:var(--orange);font-size:21px;line-height:1}
        details[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0;max-width:760px}
        .cta{margin:0 0 78px;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:18px;padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .cta h2{font-size:28px;margin:0 0 7px}
        .cta p{color:var(--muted);margin:0}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#131417}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
        .footer-brand{font-size:19px;font-weight:800}
        .footer-brand p{font-size:13px;font-weight:400;color:var(--muted);max-width:360px;margin-top:13px}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px;color:var(--lime)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;display:flex;justify-content:space-between;color:var(--soft);font-size:12px}
        @media(max-width:1024px){.main-nav{gap:0}.main-nav a{padding:8px 7px;font-size:13px}.header-inner{gap:14px}.brand{min-width:205px}.hero-grid{gap:38px}}
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.header-inner{gap:10px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:180px}.brand-mark{width:34px;height:34px}
            .menu-toggle{display:block}.header-action{display:none}.main-nav{display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .hero{padding:58px 0 52px}.hero-grid,.content-layout,.guide-panel{grid-template-columns:1fr}.hero h1{letter-spacing:-1px}.hero-copy{font-size:15px}.topic-board{padding:22px}.board-title{font-size:27px;margin-top:28px}.hero-facts{gap:18px}
            .section{padding:55px 0}.section-head{display:block}.section-head h2{font-size:27px;margin-bottom:10px}.section-head p{font-size:14px}.index-strip{grid-template-columns:1fr}.guide-points{padding:24px;grid-template-columns:1fr}.cta{display:block;padding:27px 23px}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}
        }
        @media(max-width:520px){.hero-actions .btn{width:100%}.feature-card{min-height:330px;padding:23px}.feature-card h3{font-size:23px}.list-item{grid-template-columns:30px 1fr;gap:10px}.date{grid-column:2}.footer-grid{grid-template-columns:1fr}}

/* roulang page: category5 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;background:var(--bg);color:var(--text);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            font-size:15px;line-height:1.7;
        }
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{
            height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);
            position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)
        }
        .header-inner{height:100%;display:flex;align-items:center;gap:25px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{
            width:38px;height:38px;border-radius:10px;background:var(--orange);
            display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px
        }
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:3px;flex:1}
        .main-nav a{
            color:var(--muted);padding:9px 10px;border-radius:8px;white-space:nowrap;transition:.2s
        }
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{
            display:none;background:none;border:1px solid var(--line-strong);
            color:var(--text);border-radius:8px;padding:7px 10px
        }
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border:1px solid transparent;border-radius:9px;padding:11px 18px;
            font-weight:700;transition:.2s;white-space:nowrap
        }
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{
            outline:3px solid rgba(184,217,90,.55);outline-offset:3px
        }
        .page-hero{
            padding:82px 0 68px;border-bottom:1px solid var(--line);
            background:linear-gradient(110deg,#1b1c21 0%,#17181c 60%,#242126 100%);
            position:relative;overflow:hidden
        }
        .page-hero:after{
            content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(184,217,90,.18);
            border-radius:50%;right:-90px;top:-120px
        }
        .hero-content{position:relative;z-index:1;max-width:790px}
        .eyebrow,.section-kicker{
            color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px
        }
        h1{font-size:clamp(34px,5vw,60px);line-height:1.15;letter-spacing:-1.5px;margin:16px 0 19px}
        h1 span{color:var(--orange)}
        .hero-content p{color:var(--muted);font-size:17px;max-width:720px;margin:0}
        .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--soft);font-size:13px;margin-bottom:25px}
        .breadcrumb a:hover{color:var(--lime)}
        .breadcrumb strong{color:var(--text);font-weight:500}
        .hero-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
        .badge,.tag{
            display:inline-flex;align-items:center;width:max-content;border:1px solid rgba(184,217,90,.35);
            color:var(--lime);border-radius:6px;padding:4px 9px;font-size:12px;font-weight:700
        }
        .hero-meta .badge:last-child{color:var(--muted);border-color:var(--line-strong)}
        .section{padding:70px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:27px}
        .section-head h2{font-size:31px;line-height:1.25;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:530px;margin:0}
        .faq-layout{display:grid;grid-template-columns:270px 1fr;gap:52px;align-items:start}
        .faq-index{
            position:sticky;top:105px;background:var(--panel-3);border:1px solid var(--line);
            border-radius:var(--radius);padding:23px
        }
        .faq-index h2{font-size:18px;margin:0 0 16px}
        .faq-index a{
            display:block;color:var(--muted);padding:10px 0;border-bottom:1px solid var(--line);
            transition:.2s
        }
        .faq-index a:last-child{border-bottom:0}
        .faq-index a:hover{color:var(--orange);padding-left:5px}
        .faq-group{margin-bottom:36px;scroll-margin-top:105px}
        .faq-group h3{font-size:20px;margin:0 0 14px;color:var(--text)}
        .faq-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel)}
        details{border-bottom:1px solid var(--line)}
        details:last-child{border-bottom:0}
        summary{
            list-style:none;cursor:pointer;padding:19px 52px 19px 22px;
            font-weight:700;position:relative
        }
        summary::-webkit-details-marker{display:none}
        summary:after{
            content:"+";position:absolute;right:22px;top:15px;color:var(--orange);
            font-size:25px;font-weight:400
        }
        details[open] summary{color:var(--orange);background:rgba(240,90,60,.06)}
        details[open] summary:after{content:"−"}
        .answer{padding:0 52px 20px 22px;color:var(--muted);max-width:850px}
        .answer p{margin:0 0 10px}
        .answer p:last-child{margin-bottom:0}
        .tip-box{
            background:rgba(184,217,90,.08);border-left:3px solid var(--lime);
            padding:15px 18px;color:#d9e0c0;border-radius:0 9px 9px 0;margin-top:14px
        }
        .search-panel{
            background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
            padding:24px;margin-bottom:50px;display:flex;align-items:center;gap:18px
        }
        .search-panel label{font-weight:800;white-space:nowrap}
        .search-wrap{display:flex;flex:1;gap:10px}
        .search-wrap input{
            min-width:0;flex:1;background:var(--panel-3);border:1px solid var(--line-strong);
            border-radius:9px;color:var(--text);padding:11px 14px
        }
        .search-wrap input::placeholder{color:var(--soft)}
        .search-wrap input:focus{border-color:var(--lime);outline:none}
        .search-result{display:none;color:var(--lime);font-size:13px;margin-left:auto}
        .cta{
            margin:18px 0 76px;background:var(--panel-2);border:1px solid var(--line);
            border-radius:18px;padding:34px 38px;display:flex;align-items:center;
            justify-content:space-between;gap:25px
        }
        .cta h2{font-size:25px;margin:0 0 8px}
        .cta p{color:var(--muted);margin:0;max-width:650px}
        .site-footer{border-top:1px solid var(--line);padding:48px 0 25px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:45px}
        .footer-brand{font-weight:800;font-size:18px}
        .footer-brand p{font-size:13px;color:var(--muted);font-weight:400;max-width:390px;margin-top:12px}
        .footer-col{display:flex;flex-direction:column;gap:9px}
        .footer-col h3{font-size:14px;margin:0 0 7px;color:var(--lime)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{
            display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);
            color:var(--soft);font-size:12px;margin-top:36px;padding-top:19px
        }
        .empty-note{color:var(--soft);font-size:13px;margin-top:12px}
        @media(max-width:1024px){
            .header-inner{gap:12px}.brand{min-width:215px}.main-nav a{padding:8px 7px;font-size:13px}
            .header-action .btn{padding:9px 12px}.faq-layout{gap:30px}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.brand{min-width:0;flex:1}.brand-name{font-size:13px;max-width:180px}
            .brand-mark{width:34px;height:34px}.header-action{display:block}.header-action .btn{font-size:12px;padding:8px 10px}
            .menu-toggle{display:block}
            .main-nav{
                display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;
                background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;
                flex-direction:column;align-items:stretch;box-shadow:var(--shadow)
            }
            .main-nav.open{display:flex}.main-nav a{padding:11px 13px}
            .page-hero{padding:60px 0 52px}h1{letter-spacing:-1px}
            .hero-content p{font-size:15px}.section{padding:52px 0}
            .section-head{display:block}.section-head p{margin-top:12px}
            .faq-layout{display:block}.faq-index{position:static;margin-bottom:30px}
            .search-panel{display:block;padding:19px}.search-panel label{display:block;margin-bottom:12px}
            .search-result{display:block;margin:10px 0 0}
            .cta{display:block;padding:28px 23px;margin-bottom:55px}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
            .copyright{display:block}.copyright span{display:block;margin-top:5px}
        }
        @media(max-width:520px){
            .brand-name small{font-size:9px}.header-action .btn{display:none}
            .page-hero{padding-top:45px}.breadcrumb{font-size:12px}
            h1{font-size:35px}.hero-meta{gap:8px}
            summary{padding:16px 44px 16px 16px;font-size:14px}.answer{padding:0 18px 18px 16px;font-size:14px}
            .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
        }

/* roulang page: category6 */
:root{
            --bg:#17181c;
            --panel:#22242a;
            --panel-2:#2b2d33;
            --panel-3:#1d1f24;
            --text:#f5f3ee;
            --muted:#a8a9ad;
            --soft:#777a80;
            --orange:#f05a3c;
            --orange-dark:#cf432d;
            --lime:#b8d95a;
            --line:rgba(245,243,238,.12);
            --line-strong:rgba(245,243,238,.22);
            --radius:14px;
            --shadow:0 18px 40px rgba(0,0,0,.2);
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
        .site-header{height:78px;border-bottom:1px solid var(--line);background:rgba(23,24,28,.95);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .header-inner{height:100%;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:238px}
        .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}
        .brand-name{font-weight:800;line-height:1.2;font-size:15px;max-width:210px}
        .brand-name small{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:4px;flex:1}
        .main-nav a{color:var(--muted);padding:9px 11px;border-radius:8px;white-space:nowrap;transition:.2s}
        .main-nav a:hover,.main-nav a.active{color:var(--text);background:rgba(240,90,60,.13)}
        .main-nav a.active{box-shadow:inset 0 -2px var(--orange)}
        .header-action{flex:none}
        .menu-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:8px;padding:7px 10px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:700;transition:.2s;white-space:nowrap}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(240,90,60,.2)}
        .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange)}
        .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(184,217,90,.55);outline-offset:3px}
        .hero{padding:82px 0 68px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;width:430px;height:430px;border-radius:50%;background:rgba(240,90,60,.08);right:-140px;top:-170px}
        .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:center}
        .eyebrow,.section-kicker{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px}
        .hero h1{font-size:clamp(36px,5vw,64px);line-height:1.15;letter-spacing:-2px;margin:18px 0 22px;max-width:720px}
        .hero h1 span{color:var(--orange)}
        .hero-copy{color:var(--muted);font-size:17px;max-width:650px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
        .hero-aside{position:relative;min-height:280px;background:var(--panel);border:1px solid var(--line-strong);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
        .hero-aside:after{content:"";position:absolute;inset:16px;border:1px solid rgba(184,217,90,.2);border-radius:16px;pointer-events:none}
        .aside-number{font-size:88px;line-height:1;font-weight:900;color:var(--orange);opacity:.9}
        .aside-title{position:relative;z-index:1;font-size:26px;font-weight:800;max-width:300px}
        .aside-note{position:absolute;bottom:27px;right:28px;color:var(--muted);font-size:13px}
        .section{padding:76px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
        .section-head h2{font-size:32px;line-height:1.2;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:520px;margin:0}
        .intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}
        .panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
        .panel h3{font-size:23px;margin:0 0 13px}
        .panel p{color:var(--muted);margin:0 0 15px}
        .panel p:last-child{margin-bottom:0}
        .point-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
        .point-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--muted)}
        .point-list li:last-child{border-bottom:0}
        .point-list b{color:var(--lime);font-size:18px;min-width:24px}
        .route-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
        .route{background:var(--panel-3);border:1px solid var(--line);padding:21px 18px;border-radius:12px;transition:.2s}
        .route:hover{border-color:var(--orange);transform:translateY(-3px)}
        .route span{color:var(--orange);font-size:12px;font-weight:800}
        .route h3{font-size:17px;margin:10px 0 5px}
        .route p{color:var(--muted);font-size:13px;margin:0}
        .contact-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:22px;align-items:start}
        .contact-info{background:linear-gradient(145deg,#30272a,#22242a);border:1px solid var(--line-strong);border-radius:var(--radius);padding:32px}
        .contact-info h2{font-size:28px;line-height:1.25;margin:10px 0 15px}
        .contact-info p{color:var(--muted)}
        .info-row{padding:16px 0;border-top:1px solid var(--line);display:flex;gap:13px}
        .info-row strong{display:block;color:var(--text);font-size:14px}
        .info-row span{color:var(--muted);font-size:13px}
        .form-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px}
        .form-panel h2{margin:0 0 8px;font-size:25px}
        .form-panel>p{margin:0 0 24px;color:var(--muted)}
        .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .field{display:grid;gap:7px}
        .field.full{grid-column:1/-1}
        label{font-weight:700;font-size:13px}
        input,textarea{width:100%;background:var(--panel-3);border:1px solid var(--line-strong);border-radius:9px;color:var(--text);padding:12px 13px;transition:.2s}
        input::placeholder,textarea::placeholder{color:var(--soft)}
        input:focus,textarea:focus{border-color:var(--lime);background:#202228}
        textarea{min-height:132px;resize:vertical}
        .form-foot{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:22px}
        .form-tip{font-size:12px;color:var(--soft)}
        .faq-wrap{max-width:880px}
        .faq-item{border-top:1px solid var(--line);padding:19px 0}
        .faq-item:last-child{border-bottom:1px solid var(--line)}
        summary{cursor:pointer;font-size:16px;font-weight:750;list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
        details[open] summary:after{content:"−"}
        .faq-answer{color:var(--muted);padding:12px 35px 2px 0}
        .cta{margin:0 0 78px;background:var(--panel-2);border:1px solid var(--line-strong);border-radius:18px;padding:32px 36px;display:flex;justify-content:space-between;align-items:center;gap:26px}
        .cta h2{margin:0 0 7px;font-size:27px}
        .cta p{margin:0;color:var(--muted)}
        .site-footer{border-top:1px solid var(--line);padding:45px 0 22px;background:#141519}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:34px}
        .footer-brand{font-weight:800;font-size:18px}
        .footer-brand p{font-weight:400;color:var(--muted);font-size:13px;max-width:350px;margin:12px 0 0}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:14px;margin:0 0 8px;color:var(--lime)}
        .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid var(--line);margin-top:34px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:var(--soft);font-size:12px}
        @media(max-width:1050px){
            .header-inner{gap:14px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}.header-action{display:none}
            .hero-grid{gap:40px}.route-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .container{width:min(var(--max),calc(100% - 32px))}
            .site-header{height:68px}.header-inner{justify-content:space-between}
            .brand{min-width:0}.brand-name{font-size:13px;max-width:190px}.brand-mark{width:34px;height:34px}
            .menu-toggle{display:block}
            .main-nav{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 16px;background:#191a1e;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
            .main-nav.is-open{display:flex}.main-nav a{padding:11px 12px}
            .hero{padding:60px 0 55px}.hero-grid,.intro-grid,.contact-layout{grid-template-columns:1fr}
            .hero h1{letter-spacing:-1px}.hero-aside{min-height:220px}.aside-number{font-size:68px}
            .section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}
            .form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}
            .form-foot,.cta{display:block}.form-tip{margin-top:13px}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
            .copyright{display:block}.copyright span{display:block;margin-top:6px}
        }
        @media(max-width:520px){
            .route-grid{grid-template-columns:1fr}.panel,.contact-info,.form-panel{padding:23px}
            .hero-actions .btn{width:100%}.hero h1{font-size:38px}.section-head h2{font-size:27px}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}