/* roulang page: index */
:root{
            --ink:#173a34;
            --deep:#102e29;
            --green:#216052;
            --mint:#dcece4;
            --orange:#d9823b;
            --apricot:#f5e5d3;
            --paper:#fffdf9;
            --sand:#f4f0e9;
            --muted:#6c7771;
            --line:#dfe5df;
            --shadow:0 18px 45px rgba(20,53,45,.10);
            --radius:16px;
            --container:1200px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.78}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{display:block;max-width:100%}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .topline{height:5px;background:var(--orange)}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
        .nav{height:76px;display:flex;align-items:center;gap:34px}
        .logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
        .logo-mark{width:34px;height:34px;border-radius:10px 10px 4px 10px;background:var(--ink);position:relative}
        .logo-mark:after{content:"";position:absolute;width:12px;height:12px;border:3px solid var(--orange);border-radius:50%;right:6px;top:6px}
        .nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
        .nav-links a{position:relative;color:#52645e;font-size:15px;padding:25px 0}
        .nav-links a:hover,.nav-links a.active{color:var(--ink)}
        .nav-links a.active:after{content:"";position:absolute;bottom:13px;left:0;right:0;height:3px;border-radius:3px;background:var(--orange)}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;transition:.25s ease}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:#bd6729;transform:translateY(-2px);box-shadow:0 8px 18px rgba(189,103,41,.22)}
        .btn-secondary{border-color:#b9cbc2;color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--mint);border-color:var(--green)}
        .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
        .hero{background:var(--deep);color:#fff;overflow:hidden;padding:76px 0 82px;position:relative}
        .hero:before{content:"";position:absolute;width:500px;height:500px;border:1px solid rgba(222,236,228,.14);border-radius:50%;right:-160px;top:-190px}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:75px;position:relative}
        .eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;border-radius:30px;padding:5px 12px;font-size:12px;font-weight:800;letter-spacing:.08em}
        .eyebrow{color:#f8c28f;background:rgba(217,130,59,.15);border:1px solid rgba(217,130,59,.4)}
        .hero h1{font-size:clamp(36px,5vw,60px);line-height:1.18;letter-spacing:-.04em;margin:20px 0 18px}
        .hero h1 em{font-style:normal;color:#f2b675}
        .hero p{max-width:570px;color:#c7d8d0;font-size:17px}
        .hero-actions{display:flex;gap:12px;margin-top:29px;flex-wrap:wrap}
        .hero .btn-secondary{color:#fff;border-color:#52766c}
        .hero .btn-secondary:hover{color:var(--ink)}
        .hero-art{min-height:390px;position:relative}
        .browser{position:absolute;right:0;top:20px;width:min(470px,100%);background:#f7faf7;border-radius:18px;color:var(--ink);box-shadow:0 25px 60px rgba(0,0,0,.28);padding:14px}
        .browser-bar{height:24px;display:flex;gap:6px;align-items:center;border-bottom:1px solid #e1e9e3;margin-bottom:14px}
        .browser-bar i{width:7px;height:7px;border-radius:50%;background:#d9823b}
        .browser-bar i:nth-child(2){background:#aec6b8}.browser-bar i:nth-child(3){background:#6e9b85}
        .screen{height:285px;border-radius:12px;background:linear-gradient(135deg,#d8e9df,#fbf0dc);padding:22px;position:relative;overflow:hidden}
        .screen:after{content:"WEN DING";position:absolute;right:-15px;bottom:18px;color:rgba(33,96,82,.12);font-size:54px;font-weight:900;transform:rotate(-12deg)}
        .screen-title{font-size:25px;font-weight:800;margin:14px 0 22px}
        .screen-row{display:grid;grid-template-columns:1.3fr .7fr;gap:12px}
        .screen-block{height:78px;background:rgba(255,255,255,.8);border-radius:12px;padding:12px}
        .screen-block b{display:block;width:65%;height:9px;background:#83a896;border-radius:5px;margin-bottom:10px}
        .screen-block span{display:block;width:42%;height:7px;background:#d5ddd7;border-radius:5px}
        .hero-note{position:absolute;left:0;bottom:3px;width:180px;background:#f7e3cf;color:var(--ink);padding:16px;border-radius:14px;box-shadow:var(--shadow)}
        .hero-note strong{font-size:26px;display:block}.hero-note small{color:var(--muted)}
        .entry-strip{background:var(--mint);border-bottom:1px solid #c9ded4}
        .entry-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
        .entry{padding:22px 25px;border-right:1px solid #c6d9cf}.entry:first-child{padding-left:0}.entry:last-child{border:0}
        .entry b{display:block;font-size:17px}.entry span{font-size:13px;color:#60766d}
        .section{padding:92px 0}.section.alt{background:var(--sand)}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:36px}
        .section-kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
        h2{font-size:clamp(28px,3.4vw,42px);line-height:1.25;letter-spacing:-.035em;margin-top:8px}
        .section-head p{color:var(--muted);max-width:420px}
        .split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
        .window-panel{background:var(--ink);padding:20px;border-radius:20px;box-shadow:var(--shadow)}
        .window-inner{background:#f8faf6;border-radius:12px;padding:24px;min-height:300px}
        .window-inner h3{font-size:25px;margin:25px 0 12px}.line{height:10px;background:#d8e5dc;border-radius:8px;margin:10px 0;width:85%}.line.short{width:55%}
        .feature-list{list-style:none;margin-top:24px}.feature-list li{display:flex;gap:13px;padding:13px 0;border-bottom:1px solid var(--line)}
        .feature-list li:before{content:"✓";color:var(--orange);font-weight:800}
        .download{background:var(--apricot);padding:62px 0}
        .download-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}
        .device{width:205px;height:360px;margin:auto;border:9px solid #183c34;border-radius:31px;background:#edf5ee;padding:13px;box-shadow:20px 20px 0 rgba(33,96,82,.12)}
        .device-top{height:25px;width:70px;background:#183c34;border-radius:0 0 15px 15px;margin:-13px auto 22px}
        .device-panel{height:125px;background:#bddbca;border-radius:15px;margin-bottom:13px}.device-line{height:13px;background:#fff;border-radius:7px;margin:12px;width:65%}
        .download-info{display:flex;gap:28px;align-items:center;margin-top:28px}.qr{width:102px;height:102px;border:8px solid #fff;background:repeating-linear-gradient(45deg,#163b33 0 5px,#fff 5px 10px);border-radius:7px}
        .meta{color:var(--muted);font-size:14px}.meta strong{color:var(--ink);display:block;font-size:17px}
        .experience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.experience-card{min-height:210px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);position:relative;overflow:hidden}.experience-card:nth-child(2){background:var(--ink);color:#fff}.experience-card:nth-child(2) p{color:#c4d5cd}.experience-card h3{font-size:21px;margin:35px 0 8px}.experience-card p{color:var(--muted)}.number{font-size:12px;color:var(--orange);font-weight:900;letter-spacing:.12em}
        .news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}.lead-news{background:var(--ink);color:#fff;padding:34px;border-radius:var(--radius);min-height:280px;display:flex;flex-direction:column;justify-content:end}.lead-news p{color:#c8d9d1;margin:12px 0 23px}.tag{background:var(--mint);color:var(--green);letter-spacing:0}.lead-news .tag{background:#315f54;color:#f7c18a}
        .news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:86px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.news-item time{color:var(--muted);font-size:13px;padding-top:4px}.news-item h3{font-size:17px;line-height:1.45}.news-item p{font-size:14px;color:var(--muted);margin-top:4px}
        .timeline{border-left:2px solid #c6d8ce;margin-left:10px}.timeline-item{position:relative;padding:0 0 27px 35px}.timeline-item:before{content:"";position:absolute;left:-8px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--orange);border:3px solid var(--paper)}.timeline-item small{color:var(--orange);font-weight:700}.timeline-item h3{font-size:18px}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{padding:24px 20px;border-top:3px solid var(--green);background:#fff}.step b{font-size:30px;color:#b5cfc1}.step h3{font-size:18px;margin:10px 0 5px}.step p{font-size:14px;color:var(--muted)}
        .security{display:grid;grid-template-columns:1fr 1fr;gap:30px}.security-box{padding:30px;background:#e9f2ec;border-radius:var(--radius)}.security-box h3{font-size:22px;margin-bottom:12px}.security-box li{list-style:none;padding:7px 0}.security-box li:before{content:"•";color:var(--orange);font-weight:900;margin-right:9px}
        .channels{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:16px}.channel{padding:27px;border:1px solid var(--line);border-radius:var(--radius);min-height:165px;background:#fff;display:flex;flex-direction:column;justify-content:space-between}.channel:first-child{background:var(--green);color:#fff}.channel p{font-size:14px;color:var(--muted)}.channel:first-child p{color:#d4e5dc}.channel a{font-weight:800;color:var(--orange)}
        .faq{max-width:850px;margin:auto}.faq details{border-bottom:1px solid var(--line);padding:20px 0}.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between}.faq summary:after{content:"＋";color:var(--orange);font-size:22px}.faq details[open] summary:after{content:"－"}.faq details p{color:var(--muted);padding:13px 35px 0 0}
        .notice{background:var(--deep);color:#fff;padding:20px 0}.notice-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.notice p{color:#c6d9d0;font-size:14px}.notice strong{color:#f2bd84}
        .contact{display:grid;grid-template-columns:.75fr 1.25fr;gap:55px}.contact-copy p{color:var(--muted);margin-top:13px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:14px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:9px;padding:12px 14px;outline:none;color:var(--ink)}.field textarea{min-height:110px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(33,96,82,.12)}
        .site-footer{background:#102e29;color:#d7e5df;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:35px}.site-footer h3{color:#fff;font-size:17px;margin-bottom:14px}.site-footer p,.site-footer a{color:#a9c0b6;font-size:14px}.site-footer a{display:block;padding:3px 0}.site-footer a:hover{color:#f0b477}.footer-brand{font-size:21px!important;color:#fff!important;font-weight:800}.footer-bottom{border-top:1px solid #315047;margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:13px;color:#91aba0}
        @media(max-width:1024px){.nav{gap:18px}.nav-links{gap:15px}.hero-grid{gap:35px}.section{padding:72px 0}.container{width:min(var(--container),calc(100% - 36px))}}
        @media(max-width:768px){.nav{height:68px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:12px 20px 20px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0}.nav-links.open{display:flex}.nav-links a{padding:11px 0}.nav-links a.active:after{bottom:5px}.nav-cta{display:none}.menu-toggle{display:block;margin-left:auto}.hero{padding:56px 0}.hero-grid,.split,.download-grid,.news-layout,.security,.contact{grid-template-columns:1fr}.hero-art{min-height:335px}.browser{position:relative;top:15px}.hero-note{bottom:-5px}.entry-list{grid-template-columns:repeat(2,1fr)}.entry{padding:16px!important;border-bottom:1px solid #c6d9cf}.experience-grid,.steps{grid-template-columns:1fr 1fr}.channels{grid-template-columns:1fr 1fr}.channels .channel:first-child{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.notice-inner{align-items:flex-start;flex-direction:column}}
        @media(max-width:520px){.container{width:calc(100% - 28px)}.logo{font-size:17px}.hero h1{font-size:35px}.hero p{font-size:15px}.hero-actions,.hero-actions .btn{width:100%}.hero-actions .btn{min-height:50px}.hero-art{min-height:285px}.browser{padding:9px}.screen{height:210px;padding:15px}.screen-title{font-size:19px;margin:10px 0 16px}.screen-block{height:55px}.hero-note{width:145px;padding:10px}.hero-note strong{font-size:20px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:15px}.entry-list,.experience-grid,.steps,.channels,.footer-grid,.form-grid{grid-template-columns:1fr}.channels .channel:first-child{grid-column:auto}.download-info{align-items:flex-start;flex-direction:column}.news-item{grid-template-columns:70px 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}

/* roulang page: category1 */
:root{
            --ink:#173a34;
            --deep:#102e29;
            --green:#216052;
            --mint:#dcece4;
            --orange:#d9823b;
            --apricot:#f5e5d3;
            --paper:#fffdf9;
            --sand:#f4f0e9;
            --muted:#6c7771;
            --line:#dfe5df;
            --shadow:0 18px 45px rgba(20,53,45,.10);
            --radius:16px;
            --container:1200px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.78}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        a:hover{color:var(--orange)}
        img{display:block;max-width:100%}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
        .nav{height:76px;display:flex;align-items:center;gap:34px}
        .logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
        .logo-mark{width:34px;height:34px;border-radius:10px 10px 4px 10px;background:var(--ink);position:relative}
        .logo-mark:after{content:"";position:absolute;width:12px;height:12px;border:3px solid var(--orange);border-radius:50%;right:6px;top:6px}
        .nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
        .nav-links a{position:relative;color:#52645e;font-size:15px;padding:25px 0}
        .nav-links a:hover,.nav-links a.active{color:var(--ink)}
        .nav-links a.active:after{content:"";position:absolute;bottom:13px;left:0;right:0;height:3px;border-radius:3px;background:var(--orange)}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;transition:.25s ease}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:#bd6729;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(189,103,41,.22)}
        .btn-secondary{border-color:#b9cbc2;color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--mint);border-color:var(--green)}
        .btn:focus,.nav-cta:focus,.nav-links a:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(217,130,59,.3);outline-offset:3px}
        .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
        .page-head{background:var(--deep);color:#fff;padding:68px 0 62px}
        .crumbs{display:flex;align-items:center;gap:10px;color:#a9c2b7;font-size:14px;margin-bottom:27px}
        .crumbs a:hover{color:#f5bc82}
        .page-head-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:end}
        .eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;border-radius:30px;padding:5px 12px;font-size:12px;font-weight:800;letter-spacing:.06em}
        .eyebrow{color:#f8c28f;background:rgba(217,130,59,.15);border:1px solid rgba(217,130,59,.4)}
        .page-head h1{font-size:clamp(36px,5vw,56px);line-height:1.18;letter-spacing:-.04em;margin:17px 0 15px}
        .page-head p{max-width:700px;color:#c7d8d0;font-size:17px;margin:0}
        .head-note{border-left:3px solid var(--orange);padding:9px 0 9px 22px;color:#d8e5de}
        .head-note strong{display:block;font-size:27px;color:#fff;line-height:1.3}
        .section{padding:82px 0}
        .section.alt{background:var(--sand)}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:32px}
        .section-kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.12em}
        h2{font-size:32px;line-height:1.3;letter-spacing:-.03em;margin:7px 0 0}
        .section-head p{color:var(--muted);max-width:450px;margin:0}
        .lead-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
        .lead-news{background:var(--ink);color:#fff;padding:36px;border-radius:var(--radius);min-height:290px;display:flex;flex-direction:column;justify-content:end;box-shadow:var(--shadow)}
        .lead-news .tag{background:#315f54;color:#f7c18a}
        .lead-news h3{font-size:27px;line-height:1.4;margin:17px 0 8px}
        .lead-news p{color:#c8d9d1;margin:0 0 22px}
        .lead-meta{color:#a9c2b7;font-size:13px}
        .empty-state{padding:38px;border:1px dashed #b9cbc2;border-radius:var(--radius);background:#fff;text-align:center;color:var(--muted);display:flex;align-items:center;justify-content:center;min-height:210px}
        .empty-icon{font-size:30px;color:var(--orange);display:block;margin-bottom:8px}
        .news-list{border-top:1px solid var(--line)}
        .news-item{display:grid;grid-template-columns:105px 1fr auto;gap:20px;padding:21px 0;border-bottom:1px solid var(--line);align-items:start}
        .news-item time{color:var(--muted);font-size:13px;padding-top:5px}
        .news-item h3{font-size:18px;line-height:1.45;margin:0 0 4px}
        .news-item p{font-size:14px;color:var(--muted);margin:0}
        .tag{background:var(--mint);color:var(--green);letter-spacing:0;white-space:nowrap}
        .read-link{font-weight:700;color:var(--orange);padding-top:4px;white-space:nowrap}
        .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 24px rgba(20,53,45,.05)}
        .filter-bar button{border:1px solid var(--line);background:var(--paper);color:var(--muted);padding:9px 16px;border-radius:30px}
        .filter-bar button:hover,.filter-bar button.active{background:var(--ink);border-color:var(--ink);color:#fff}
        .timeline{border-left:1px solid #b9cbc2;margin-left:12px;padding-left:28px}
        .timeline-item{position:relative;padding:0 0 28px}
        .timeline-item:before{content:"";position:absolute;left:-36px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--orange);border:3px solid var(--paper)}
        .timeline-item small{color:var(--orange);font-weight:700}
        .timeline-item h3{font-size:19px;margin:4px 0}
        .timeline-item p{color:var(--muted);margin:0}
        .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .support-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;min-height:185px;transition:.25s ease}
        .support-card:hover{transform:translateY(-4px);border-color:#9dbbae;box-shadow:var(--shadow)}
        .support-card span{color:var(--orange);font-size:24px;font-weight:800}
        .support-card h3{font-size:19px;margin:13px 0 7px}
        .support-card p{color:var(--muted);margin:0;font-size:15px}
        .notice{display:flex;justify-content:space-between;gap:24px;align-items:center;background:var(--apricot);border-radius:var(--radius);padding:26px 30px}
        .notice h3{margin:0 0 5px;font-size:20px}
        .notice p{margin:0;color:#6e6257}
        .more-box{text-align:center;padding-top:25px}
        .site-footer{background:var(--deep);color:#dbe8e1;padding:58px 0 0}
        .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:45px}
        .footer-brand{font-size:20px;font-weight:800;color:#fff}
        .footer-grid h3{font-size:15px;color:#f5bc82;margin:0 0 15px}
        .footer-grid a{display:block;color:#b9ccc2;margin:8px 0;font-size:14px}
        .footer-grid a:hover{color:#fff}
        .footer-grid p{color:#b9ccc2;font-size:14px;margin:0}
        .footer-bottom{border-top:1px solid rgba(220,236,228,.14)}
        .footer-bottom{border-top:1px solid rgba(220,236,228,.14);padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;color:#9fb6ab;font-size:13px}
        @media(max-width:1024px){
            .nav{gap:20px}
            .nav-links{gap:17px}
            .page-head-grid,.lead-grid{gap:32px}
            .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
            .footer-grid>div:last-child{grid-column:span 3}
        }
        @media(max-width:768px){
            .container{width:min(100% - 32px,var(--container))}
            .nav{height:68px}
            .nav-links{display:none;position:absolute;top:68px;left:0;right:0;margin:0;padding:13px 20px 18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(20,53,45,.08);flex-direction:column;align-items:stretch;gap:0}
            .nav-links.open{display:flex}
            .nav-links a{padding:12px 0}
            .nav-links a.active:after{bottom:5px;right:auto;width:34px}
            .nav-cta{display:none}
            .menu-toggle{display:block;margin-left:auto}
            .page-head{padding:45px 0 48px}
            .page-head-grid,.lead-grid{grid-template-columns:1fr}
            .head-note{margin-top:10px}
            .section{padding:60px 0}
            .section-head{display:block;margin-bottom:24px}
            .section-head p{margin-top:12px}
            h2{font-size:28px}
            .news-item{grid-template-columns:78px 1fr;gap:12px}
            .news-item .read-link{grid-column:2;padding-top:0}
            .support-grid{grid-template-columns:1fr}
            .notice{display:block;padding:23px}
            .notice .btn{margin-top:18px;width:100%}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            .footer-grid>div:last-child{grid-column:span 2}
            .footer-bottom{display:block}
            .footer-bottom span{display:block;margin-top:6px}
        }
        @media(max-width:520px){
            .logo{font-size:17px}
            .logo-mark{width:31px;height:31px}
            .page-head h1{font-size:35px}
            .page-head p{font-size:15px}
            .lead-news{padding:25px;min-height:255px}
            .lead-news h3{font-size:22px}
            .news-item{display:block;padding:19px 0}
            .news-item time{display:block;margin-bottom:6px}
            .news-item .tag{margin-bottom:8px}
            .news-item .read-link{display:inline-block;margin-top:10px}
            .filter-bar{padding:13px}
            .filter-bar button{padding:8px 12px;font-size:14px}
            .footer-grid{grid-template-columns:1fr}
            .footer-grid>div:last-child{grid-column:auto}
        }

/* roulang page: article */
:root{
    --ink:#173a34;
    --deep:#102e29;
    --green:#216052;
    --mint:#dcece4;
    --orange:#d9823b;
    --apricot:#f5e5d3;
    --paper:#fffdf9;
    --sand:#f4f0e9;
    --muted:#6c7771;
    --line:#dfe5df;
    --soft:#f8f8f3;
    --shadow:0 18px 45px rgba(20,53,45,.10);
    --shadow-sm:0 8px 24px rgba(20,53,45,.07);
    --radius:16px;
    --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.78}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
::selection{background:var(--mint);color:var(--deep)}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{height:76px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px 10px 4px 10px;background:var(--ink);position:relative}
.logo-mark:after{content:"";position:absolute;width:12px;height:12px;border:3px solid var(--orange);border-radius:50%;right:6px;top:6px}
.nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav-links a{position:relative;color:#52645e;font-size:15px;padding:25px 0}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a.active:after{content:"";position:absolute;bottom:13px;left:0;right:0;height:3px;border-radius:3px;background:var(--orange)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;transition:.25s ease}
.nav-cta,.btn-primary{background:var(--orange);color:#fff}
.nav-cta:hover,.btn-primary:hover{background:#bd6729;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(189,103,41,.22)}
.nav-cta:focus,.btn:focus,.menu-toggle:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(217,130,59,.28);outline-offset:3px}
.btn-secondary{border-color:#b9cbc2;color:var(--ink);background:transparent}
.btn-secondary:hover{background:var(--mint);border-color:var(--green);color:var(--ink)}
.btn:active,.nav-cta:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.menu-toggle{display:none;margin-left:auto;background:none;border:0;color:var(--ink);font-size:25px;line-height:1}
.page-banner{background:var(--deep);color:#fff;padding:45px 0 53px;position:relative;overflow:hidden}
.page-banner:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(220,236,228,.14);border-radius:50%;right:5%;top:-230px}
.breadcrumb{position:relative;z-index:1;display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:#bdcec6;margin-bottom:23px}
.breadcrumb a:hover{color:#f6bd80}
.breadcrumb .divider{color:#68887d}
.article-category,.tag{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:30px;font-size:12px;font-weight:800;letter-spacing:.04em}
.article-category{position:relative;z-index:1;background:rgba(217,130,59,.15);border:1px solid rgba(217,130,59,.4);color:#f6bd80}
.article-title{position:relative;z-index:1;max-width:900px;margin:16px 0 17px;font-size:clamp(31px,4.5vw,52px);line-height:1.22;letter-spacing:-.035em;color:#fff}
.article-summary{position:relative;z-index:1;max-width:820px;margin:0;color:#c9d8d1;font-size:16px}
.article-meta{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:18px;margin-top:23px;color:#b7cbc2;font-size:14px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{width:6px;height:6px;border-radius:50%;background:var(--orange);display:inline-block}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 300px;gap:56px;align-items:start;padding:66px 0 42px}
.article-main{min-width:0}
.reading-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,5vw,56px);box-shadow:var(--shadow-sm)}
.article-content{font-size:17px;color:#314943;overflow-wrap:anywhere}
.article-content>*:first-child{margin-top:0}
.article-content h2{font-size:clamp(24px,3vw,32px);line-height:1.36;letter-spacing:-.02em;margin:2.3em 0 .8em;color:var(--ink)}
.article-content h3{font-size:21px;line-height:1.45;margin:1.9em 0 .7em;color:var(--ink)}
.article-content p{margin:0 0 1.35em}
.article-content ul,.article-content ol{margin:0 0 1.5em;padding-left:1.4em}
.article-content li{padding-left:.25em;margin:.45em 0}
.article-content blockquote{margin:1.8em 0;padding:18px 22px;border-left:4px solid var(--orange);border-radius:0 12px 12px 0;background:var(--apricot);color:#4d554f}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.3em 0}
.article-content a{color:var(--green);font-weight:700;border-bottom:1px solid rgba(33,96,82,.3)}
.article-content a:hover{color:var(--orange);border-color:var(--orange)}
.article-content img{margin:1.8em auto;border-radius:12px;border:1px solid var(--line)}
.article-content table{width:100%;border-collapse:collapse;margin:1.8em 0;display:block;overflow-x:auto;white-space:nowrap}
.article-content th,.article-content td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-content th{background:var(--mint);color:var(--ink)}
.article-side{position:sticky;top:102px}
.side-panel{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px}
.side-panel h2{font-size:16px;margin:0 0 15px;font-weight:800}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:#52645e}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a:hover{color:var(--orange)}
.side-note{background:var(--mint);border-color:#c9ded3}
.side-note p{font-size:14px;line-height:1.75;margin:0;color:#416057}
.article-tools{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:24px;padding:17px 2px;color:var(--muted);font-size:14px;border-bottom:1px solid var(--line)}
.article-tools strong{color:var(--ink)}
.section{padding:72px 0}
.section.alt{background:var(--sand)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:30px}
.section-kicker{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--orange)}
.section-head h2{font-size:clamp(26px,3vw,35px);line-height:1.3;margin:5px 0 0;letter-spacing:-.025em}
.section-head p{margin:0;max-width:450px;color:var(--muted);font-size:15px}
.notice{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:27px 30px;background:#f7ede2;border:1px solid #ead1b7;border-radius:var(--radius)}
.notice-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--orange);color:#fff;font-size:20px;font-weight:900}
.notice h2{font-size:20px;margin:0 0 6px}
.notice p{margin:0;color:#56615b}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{display:flex;flex-direction:column;min-height:225px;padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 3px 12px rgba(20,53,45,.03)}
.related-card:hover{border-color:#aac5b8;transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.tag{background:var(--mint);color:var(--green);width:max-content}
.related-card h3{font-size:19px;line-height:1.5;margin:17px 0 10px}
.related-card p{margin:0;color:var(--muted);font-size:14px}
.related-card .card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:18px;font-size:13px;color:var(--muted)}
.text-link{font-weight:800;color:var(--orange)}
.text-link:hover{color:#ad5d25}
.article-nav-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.article-nav-box{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:110px;padding:23px 26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.article-nav-box:hover{background:var(--mint);border-color:#b9d1c4}
.article-nav-box small{display:block;color:var(--muted);font-weight:700;margin-bottom:4px}
.article-nav-box strong{font-size:17px;line-height:1.45}
.article-nav-box b{font-size:24px;color:var(--orange)}
.feedback-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px;align-items:start}
.feedback-intro h2{font-size:clamp(26px,3vw,35px);line-height:1.3;margin:8px 0 13px}
.feedback-intro p{color:var(--muted);margin:0}
.feedback-form{padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:800;font-size:14px;margin-bottom:7px}
.form-group input,.form-group select,.form-group textarea{width:100%;border:1px solid #cfdad3;border-radius:10px;padding:11px 13px;background:#fff;color:var(--ink);transition:.2s ease}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(33,96,82,.12);outline:0}
.form-group textarea{min-height:104px;resize:vertical}
.form-hint{margin:10px 0 0;color:var(--muted);font-size:13px}
.empty-content{text-align:center;padding:38px 16px}
.empty-content .empty-mark{width:52px;height:52px;display:grid;place-items:center;border-radius:50%;margin:0 auto 15px;background:var(--mint);color:var(--green);font-size:24px}
.empty-content h2{font-size:22px;margin:0 0 8px}
.empty-content p{color:var(--muted);margin:0 0 20px}
.site-footer{background:var(--deep);color:#d2e0d9;padding:58px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1.2fr;gap:38px}
.footer-brand{display:inline-block;color:#fff;font-size:20px;font-weight:800}
.site-footer h3{font-size:14px;letter-spacing:.08em;color:#f4bb80;margin:4px 0 15px}
.site-footer p{margin:0;color:#b9cbc2;font-size:14px;line-height:1.75}
.site-footer a:not(.footer-brand){display:block;width:max-content;max-width:100%;font-size:14px;margin:8px 0;color:#d2e0d9}
.site-footer a:not(.footer-brand):hover{color:#f4bb80}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:45px;padding-top:19px;border-top:1px solid rgba(220,236,228,.16);font-size:12px;color:#9fb6ac}
@media (max-width:1024px){
    .nav{gap:20px}.nav-links{gap:18px}.article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:30px}
    .related-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
    .container{width:min(var(--container),calc(100% - 32px))}
    .nav{height:68px;gap:12px}.logo{font-size:17px}.logo-mark{width:31px;height:31px;flex-basis:31px}
    .menu-toggle{display:block}.nav-cta{display:none}
    .nav-links{display:none;position:absolute;top:68px;left:0;right:0;margin:0;padding:10px 16px 17px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);flex-direction:column;align-items:stretch;gap:0}
    .nav-links.open{display:flex}.nav-links a{padding:12px 5px}.nav-links a.active:after{bottom:7px;right:auto;width:34px}
    .page-banner{padding:34px 0 39px}.article-title{font-size:33px}.article-meta{gap:10px 16px}
    .article-layout{grid-template-columns:1fr;padding:38px 0}.article-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px}.side-panel{margin:0}
    .section{padding:56px 0}.related-grid{grid-template-columns:1fr}.feedback-wrap{grid-template-columns:1fr;gap:26px}
}
@media (max-width:520px){
    body{font-size:15px}.container{width:calc(100% - 28px)}.article-title{font-size:29px}.article-summary{font-size:15px}
    .reading-card{padding:23px 19px}.article-content{font-size:16px}.article-content h2{font-size:24px}.article-content h3{font-size:19px}
    .article-side{grid-template-columns:1fr}.side-panel{padding:20px}.notice{grid-template-columns:1fr;padding:23px}.notice-icon{width:38px;height:38px}
    .article-nav-row{grid-template-columns:1fr}.article-nav-box{min-height:90px;padding:18px}.section-head{display:block}.section-head p{margin-top:12px}
    .form-grid{grid-template-columns:1fr}.btn{width:100%}.footer-grid{grid-template-columns:1fr;gap:25px}.footer-bottom{display:block;margin-top:30px}.footer-bottom span{display:block;margin:6px 0}
}

/* roulang page: category2 */
:root{
  --ink:#173a34;
  --deep:#102e29;
  --green:#216052;
  --mint:#dcece4;
  --orange:#d9823b;
  --apricot:#f5e5d3;
  --paper:#fffdf9;
  --sand:#f4f0e9;
  --muted:#6c7771;
  --line:#dfe5df;
  --shadow:0 18px 45px rgba(20,53,45,.10);
  --radius:16px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.78}
a{color:inherit;text-decoration:none;transition:.25s ease}
a:hover{color:var(--orange)}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,249,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{height:76px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:10px 10px 4px 10px;background:var(--ink);position:relative}
.logo-mark:after{content:"";position:absolute;width:12px;height:12px;border:3px solid var(--orange);border-radius:50%;right:6px;top:6px}
.nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav-links a{position:relative;color:#52645e;font-size:15px;padding:25px 0}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a.active:after{content:"";position:absolute;bottom:13px;left:0;right:0;height:3px;border-radius:3px;background:var(--orange)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;transition:.25s ease}
.nav-cta,.btn-primary{background:var(--orange);color:#fff}
.nav-cta:hover,.btn-primary:hover{background:#bd6729;color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(189,103,41,.22)}
.btn-secondary{border-color:#b9cbc2;color:var(--ink);background:transparent}
.btn-secondary:hover{background:var(--mint);border-color:var(--green)}
.menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
.page-head{background:var(--deep);color:#fff;padding:58px 0 62px}
.breadcrumb{display:flex;gap:9px;align-items:center;color:#b8cec5;font-size:14px;margin-bottom:25px}
.breadcrumb a{color:#f2b675}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;border-radius:30px;padding:5px 12px;font-size:12px;font-weight:800;letter-spacing:.08em}
.eyebrow{color:#f8c28f;background:rgba(217,130,59,.15);border:1px solid rgba(217,130,59,.4)}
.page-head h1{font-size:clamp(36px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin:18px 0 14px}
.page-head h1 em{font-style:normal;color:#f2b675}
.page-head p{color:#c7d8d0;max-width:680px;margin:0}
.head-note{border-left:3px solid var(--orange);padding:6px 0 6px 22px;color:#d7e4de}
.section{padding:88px 0}
.section.alt{background:var(--sand)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:34px}
.section-kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.section h2{font-size:clamp(28px,3.5vw,38px);line-height:1.25;margin:8px 0 0;letter-spacing:-.03em}
.section-head p{color:var(--muted);max-width:460px;margin:0}
.interface-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
.browser{background:#f7faf7;border:1px solid #d7e3dc;border-radius:18px;color:var(--ink);box-shadow:var(--shadow);padding:16px;transform:rotate(-1deg)}
.browser-bar{height:26px;display:flex;gap:6px;align-items:center;border-bottom:1px solid #e1e9e3;margin-bottom:18px}
.browser-bar i{width:8px;height:8px;border-radius:50%;background:#d9823b}
.browser-bar i:nth-child(2){background:#aec6b8}
.browser-bar i:nth-child(3){background:#6e9b85}
.screen-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:14px}
.screen-panel{border-radius:12px;background:#e5f0e9;padding:19px;min-height:205px}
.screen-panel.dark{background:var(--ink);color:#fff;min-height:145px}
.screen-panel h3{font-size:24px;margin:18px 0 10px}
.screen-line{height:9px;border-radius:8px;background:#b9d4c5;margin:10px 0;width:82%}
.screen-line.short{width:53%}
.screen-chip{display:inline-block;padding:5px 10px;border-radius:20px;background:#f5e5d3;color:#a75c27;font-size:12px;font-weight:700}
.feature-list{list-style:none;margin:24px 0 0;padding:0}
.feature-list li{display:flex;gap:13px;padding:14px 0;border-bottom:1px solid var(--line)}
.feature-list li:before{content:"✓";color:var(--orange);font-weight:800}
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:28px 25px 30px 0;border-right:1px solid var(--line);margin-right:25px}
.step:last-child{border-right:0;margin-right:0}
.step-num{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--mint);color:var(--green);font-weight:800;margin-bottom:22px}
.step h3{font-size:19px;margin:0 0 8px}
.step p{color:var(--muted);font-size:14px;margin:0}
.adapt-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:center}
.phone-row{display:flex;justify-content:center;align-items:end;gap:18px;min-height:330px}
.phone{width:150px;height:290px;border:7px solid var(--ink);border-radius:25px;background:#f7faf7;padding:12px;box-shadow:var(--shadow);position:relative}
.phone.small{width:125px;height:240px;border-color:#78958a}
.phone-top{height:12px;width:48px;background:#d4e3da;border-radius:10px;margin:0 auto 17px}
.phone-screen{background:var(--mint);height:185px;border-radius:12px;padding:13px}
.phone.small .phone-screen{height:150px}
.phone-screen b{display:block;font-size:17px;margin:12px 0}
.phone-screen span{display:block;height:8px;background:#a8c8b8;border-radius:8px;margin:9px 0}
.info-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.info-panel h3{font-size:22px;margin:0 0 12px}
.info-panel p{color:var(--muted);margin:0}
.info-points{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.info-points div{padding:15px;background:var(--sand);border-radius:12px;font-weight:700}
.faq{max-width:850px;margin:auto}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--orange);font-size:24px;line-height:1}
.faq details[open] summary:after{content:"−"}
.faq details p{color:var(--muted);margin:13px 30px 0 0}
.news-layout{display:grid;grid-template-columns:1fr 1fr;gap:45px}
.lead-news{background:var(--ink);color:#fff;padding:34px;border-radius:var(--radius);min-height:285px;display:flex;flex-direction:column;justify-content:end}
.lead-news p{color:#c8d9d1;margin:12px 0 23px}
.lead-news .tag{background:#315f54;color:#f7c18a}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:100px 1fr;gap:17px;padding:18px 0;border-bottom:1px solid var(--line)}
.news-item time{color:var(--muted);font-size:13px;padding-top:4px}
.news-item h3{font-size:17px;line-height:1.45;margin:0}
.news-item p{font-size:14px;color:var(--muted);margin:4px 0 0}
.news-item .tag{font-size:11px;padding:3px 9px;margin-bottom:7px}
.empty-state{padding:30px;border:1px dashed #b9cbc2;border-radius:14px;color:var(--muted);background:#fff}
.compare{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.compare th,.compare td{text-align:left;padding:18px 20px;border-bottom:1px solid var(--line)}
.compare th{background:var(--mint);font-size:15px}
.compare td{color:var(--muted)}
.compare td:first-child{color:var(--ink);font-weight:700}
.cta-strip{background:var(--apricot);padding:42px 0}
.cta-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
.cta-strip h2{font-size:30px;margin:0 0 7px}
.cta-strip p{margin:0;color:#6d6258}
.site-footer{background:var(--deep);color:#d8e5df;padding:58px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:35px}
.footer-brand{color:#fff;font-size:20px;font-weight:800}
.site-footer h3{font-size:15px;color:#f2b675;margin:0 0 14px}
.site-footer a{display:block;color:#d8e5df;margin:7px 0;font-size:14px}
.site-footer a:hover{color:#f2b675}
.site-footer p{color:#adc2b9;font-size:14px;margin:0}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(216,229,223,.16);margin-top:42px;padding-top:18px;color:#94ada2;font-size:12px}
:focus-visible{outline:3px solid rgba(217,130,59,.5);outline-offset:3px}
@media(max-width:1024px){
  .nav{gap:18px}
  .nav-links{gap:16px}
  .page-head-grid,.interface-grid,.adapt-grid{gap:35px}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2){border-right:0;margin-right:0}
  .step:nth-child(n+3){border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .container{width:min(var(--container),calc(100% - 32px))}
  .nav{height:68px}
  .logo{font-size:17px}
  .logo-mark{width:30px;height:30px}
  .menu-toggle{display:block;margin-left:auto}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:12px 20px 20px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0}
  .nav-links a.active:after{bottom:7px;right:auto;width:34px}
  .nav-cta{display:none}
  .page-head{padding:43px 0 48px}
  .page-head-grid,.interface-grid,.adapt-grid,.news-layout{grid-template-columns:1fr}
  .section{padding:65px 0}
  .section-head{display:block;margin-bottom:27px}
  .section-head p{margin-top:12px}
  .step-grid{grid-template-columns:1fr}
  .step{border-right:0!important;border-bottom:1px solid var(--line);margin:0!important;padding:22px 0}
  .step:last-child{border-bottom:0}
  .phone-row{min-height:280px}
  .news-item{grid-template-columns:78px 1fr}
  .cta-strip-inner{display:block}
  .cta-strip .btn{margin-top:22px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin-top:8px}
}
@media(max-width:520px){
  .page-head h1{font-size:34px}
  .screen-layout{grid-template-columns:1fr}
  .screen-panel{min-height:150px}
  .phone{width:132px;height:260px}
  .phone.small{width:108px;height:215px}
  .phone-screen{height:165px}
  .phone.small .phone-screen{height:130px}
  .info-points{grid-template-columns:1fr}
  .compare{font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category3 */
:root{
            --ink:#173a34;
            --deep:#102e29;
            --green:#216052;
            --mint:#dcece4;
            --orange:#d9823b;
            --apricot:#f5e5d3;
            --paper:#fffdf9;
            --sand:#f4f0e9;
            --muted:#6c7771;
            --line:#dfe5df;
            --white:#fff;
            --shadow:0 18px 45px rgba(20,53,45,.10);
            --shadow-deep:0 26px 70px rgba(16,46,41,.20);
            --radius:16px;
            --small-radius:10px;
            --container:1200px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            color:var(--ink);
            background:var(--paper);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
            font-size:16px;
            line-height:1.78;
        }
        a{color:inherit;text-decoration:none;transition:.25s ease}
        a:hover{color:var(--orange)}
        img{display:block;max-width:100%}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        h1,h2,h3,p{margin-top:0}
        h1,h2,h3{line-height:1.28;letter-spacing:-.025em}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{
            position:sticky;
            top:0;
            z-index:30;
            background:rgba(255,253,249,.96);
            border-bottom:1px solid var(--line);
            backdrop-filter:blur(12px);
        }
        .nav{height:76px;display:flex;align-items:center;gap:34px}
        .logo{
            display:flex;
            align-items:center;
            gap:11px;
            font-size:20px;
            font-weight:800;
            letter-spacing:.02em;
            white-space:nowrap;
        }
        .logo-mark{
            width:34px;
            height:34px;
            flex:0 0 34px;
            border-radius:10px 10px 4px 10px;
            background:var(--ink);
            position:relative;
        }
        .logo-mark:after{
            content:"";
            position:absolute;
            width:12px;
            height:12px;
            border:3px solid var(--orange);
            border-radius:50%;
            right:6px;
            top:6px;
        }
        .nav-links{
            display:flex;
            align-items:center;
            gap:25px;
            margin-left:auto;
        }
        .nav-links a{
            position:relative;
            color:#52645e;
            font-size:15px;
            padding:25px 0;
        }
        .nav-links a:hover,.nav-links a.active{color:var(--ink)}
        .nav-links a.active:after{
            content:"";
            position:absolute;
            bottom:13px;
            left:0;
            right:0;
            height:3px;
            border-radius:3px;
            background:var(--orange);
        }
        .nav-cta,.btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            gap:8px;
            min-height:46px;
            padding:0 20px;
            border-radius:10px;
            border:1px solid transparent;
            font-weight:700;
            transition:.25s ease;
        }
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{
            background:#bd6729;
            color:#fff;
            transform:translateY(-2px);
            box-shadow:0 8px 18px rgba(189,103,41,.22);
        }
        .btn-secondary{
            border-color:#b9cbc2;
            color:var(--ink);
            background:transparent;
        }
        .btn-secondary:hover{background:var(--mint);border-color:var(--green)}
        .btn:focus,.nav-links a:focus,.footer-grid a:focus,summary:focus{
            outline:3px solid rgba(217,130,59,.35);
            outline-offset:3px;
        }
        .menu-toggle{
            display:none;
            background:none;
            border:0;
            color:var(--ink);
            font-size:25px;
            min-width:44px;
            min-height:44px;
        }
        .page-head{
            background:var(--deep);
            color:#fff;
            padding:58px 0 64px;
            position:relative;
            overflow:hidden;
        }
        .page-head:after{
            content:"";
            position:absolute;
            width:520px;
            height:520px;
            border:1px solid rgba(220,236,228,.14);
            border-radius:50%;
            right:-170px;
            top:-280px;
        }
        .breadcrumbs{
            position:relative;
            z-index:1;
            color:#a9c2b8;
            font-size:14px;
            margin-bottom:28px;
        }
        .breadcrumbs a{color:#d2e1da}
        .breadcrumbs span{margin:0 9px;color:#779187}
        .eyebrow,.tag{
            display:inline-flex;
            align-items:center;
            gap:8px;
            border-radius:30px;
            padding:5px 12px;
            font-size:12px;
            font-weight:800;
            letter-spacing:.06em;
        }
        .eyebrow{
            color:#f8c28f;
            background:rgba(217,130,59,.15);
            border:1px solid rgba(217,130,59,.4);
        }
        .page-head h1{
            position:relative;
            z-index:1;
            max-width:760px;
            font-size:clamp(34px,5vw,56px);
            margin:18px 0 15px;
        }
        .page-head p{
            position:relative;
            z-index:1;
            max-width:720px;
            margin-bottom:0;
            color:#c7d8d0;
            font-size:17px;
        }
        .section{padding:84px 0}
        .section.alt{background:var(--sand)}
        .section-head{
            display:flex;
            align-items:end;
            justify-content:space-between;
            gap:25px;
            margin-bottom:34px;
        }
        .section-kicker{
            color:var(--orange);
            font-size:13px;
            font-weight:800;
            letter-spacing:.12em;
            text-transform:uppercase;
            margin-bottom:8px;
        }
        .section-head h2{font-size:clamp(28px,3.5vw,39px);margin-bottom:0}
        .section-head p{color:var(--muted);max-width:460px;margin-bottom:0}
        .download-panel{
            display:grid;
            grid-template-columns:1.08fr .92fr;
            gap:42px;
            align-items:stretch;
        }
        .download-copy{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            padding:38px;
            box-shadow:var(--shadow);
        }
        .download-copy h2{font-size:34px;margin:17px 0 12px}
        .download-copy p{color:var(--muted);max-width:600px}
        .download-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
        .download-meta{
            display:flex;
            flex-wrap:wrap;
            gap:10px;
            margin-top:27px;
        }
        .meta-chip{
            padding:8px 12px;
            border-radius:9px;
            background:var(--mint);
            color:var(--green);
            font-size:13px;
            font-weight:700;
        }
        .download-visual{
            min-height:330px;
            border-radius:var(--radius);
            background:var(--deep);
            padding:28px;
            display:flex;
            align-items:center;
            justify-content:center;
            position:relative;
            overflow:hidden;
            box-shadow:var(--shadow-deep);
        }
        .download-visual:before{
            content:"";
            position:absolute;
            width:330px;
            height:330px;
            border:1px solid rgba(220,236,228,.16);
            border-radius:50%;
            right:-100px;
            bottom:-170px;
        }
        .phone{
            position:relative;
            z-index:1;
            width:180px;
            height:292px;
            padding:10px;
            border:7px solid #233f38;
            border-radius:28px;
            background:#f6faf6;
            box-shadow:0 20px 35px rgba(0,0,0,.24);
        }
        .phone-notch{
            width:58px;
            height:12px;
            border-radius:0 0 10px 10px;
            background:#233f38;
            margin:-10px auto 17px;
        }
        .phone-screen{color:var(--ink)}
        .phone-brand{
            display:flex;
            justify-content:space-between;
            align-items:center;
            font-size:10px;
            font-weight:800;
        }
        .phone-brand i{
            width:18px;
            height:18px;
            border-radius:6px;
            background:var(--orange);
        }
        .phone-title{font-size:20px;font-weight:800;line-height:1.3;margin:22px 0 15px}
        .phone-line{height:8px;border-radius:10px;background:#dcece4;margin:8px 0}
        .phone-line.short{width:65%}
        .phone-block{
            height:68px;
            background:var(--mint);
            border-radius:10px;
            margin-top:18px;
            padding:10px;
        }
        .phone-block:after{
            content:"";
            display:block;
            width:52%;
            height:7px;
            margin-top:12px;
            border-radius:8px;
            background:#8bb3a2;
        }
        .qr-box{
            position:relative;
            z-index:1;
            width:142px;
            height:142px;
            margin-left:35px;
            border:1px dashed #89a99a;
            border-radius:12px;
            background:#f7fbf8;
            display:flex;
            flex-direction:column;
            align-items:center;
            justify-content:center;
            color:var(--muted);
            text-align:center;
            padding:12px;
        }
        .qr-pattern{
            width:72px;
            height:72px;
            margin-bottom:10px;
            background:
                linear-gradient(90deg,#173a34 12%,transparent 12% 25%,#173a34 25% 35%,transparent 35% 52%,#173a34 52% 65%,transparent 65% 78%,#173a34 78%),
                linear-gradient(#173a34 12%,transparent 12% 25%,#173a34 25% 36%,transparent 36% 50%,#173a34 50% 63%,transparent 63% 76%,#173a34 76%);
            opacity:.78;
        }
        .qr-box small{font-size:11px;line-height:1.4}
        .info-grid{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:18px;
        }
        .info-card{
            background:#fff;
            border:1px solid var(--line);
            border-radius:var(--radius);
            padding:27px;
            min-height:205px;
            transition:.25s ease;
        }
        .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd4c9}
        .info-icon{
            width:42px;
            height:42px;
            display:grid;
            place-items:center;
            border-radius:12px;
            background:var(--apricot);
            color:var(--orange);
            font-weight:800;
            font-size:18px;
        }
        .info-card h3{font-size:20px;margin:22px 0 8px}
        .info-card p{color:var(--muted);font-size:15px;margin-bottom:0}
        .steps{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:0;
            border-top:1px solid var(--line);
            border-bottom:1px solid var(--line);
        }
        .step{
            min-height:190px;
            padding:27px 25px;
            border-right:1px solid var(--line);
        }
        .step:last-child{border-right:0}
        .step-number{
            color:var(--orange);
            font-size:14px;
            font-weight:800;
            letter-spacing:.08em;
        }
        .step h3{font-size:19px;margin:19px 0 8px}
        .step p{color:var(--muted);font-size:14px;margin-bottom:0}
        .version-layout{
            display:grid;
            grid-template-columns:.78fr 1.22fr;
            gap:54px;
            align-items:start;
        }
        .version-intro{padding-top:5px}
        .version-intro h2{font-size:35px;margin:12px 0 15px}
        .version-intro p{color:var(--muted)}
        .version-list{border-left:2px solid #c5d8ce;padding-left:28px}
        .version-item{position:relative;padding:0 0 28px}
        .version-item:last-child{padding-bottom:0}
        .version-item:before{
            content:"";
            position:absolute;
            width:13px;
            height:13px;
            border-radius:50%;
            background:var(--orange);
            left:-36px;
            top:7px;
            border:3px solid var(--sand);
        }
        .version-item small{color:var(--orange);font-weight:800}
        .version-item h3{font-size:20px;margin:5px 0 6px}
        .version-item p{color:var(--muted);font-size:15px;margin-bottom:0}
        .notice-grid{
            display:grid;
            grid-template-columns:1.1fr .9fr;
            gap:22px;
        }
        .notice-box{
            padding:30px;
            border-radius:var(--radius);
            border:1px solid var(--line);
            background:#fff;
        }
        .notice-box.warning{background:var(--apricot);border-color:#efd2b5}
        .notice-box h3{font-size:22px;margin-bottom:15px}
        .notice-box p{color:var(--muted);margin-bottom:0}
        .notice-box.warning p{color:#74563e}
        .check-list{list-style:none;padding:0;margin:0}
        .check-list li{
            position:relative;
            padding:10px 0 10px 28px;
            border-bottom:1px solid var(--line);
            color:var(--muted);
        }
        .check-list li:last-child{border-bottom:0}
        .check-list li:before{
            content:"✓";
            position:absolute;
            left:0;
            color:var(--green);
            font-weight:800;
        }
        .preview-section{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:55px;
            align-items:center;
        }
        .interface-board{
            min-height:330px;
            padding:22px;
            background:var(--ink);
            border-radius:var(--radius);
            color:#fff;
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:12px;
        }
        .interface-main{
            grid-row:span 2;
            border-radius:12px;
            background:#f6faf6;
            color:var(--ink);
            padding:20px;
        }
        .interface-main strong{display:block;font-size:23px;margin:30px 0 18px}
        .interface-line{height:9px;background:#dcece4;border-radius:8px;margin:9px 0}
        .interface-line.short{width:58%}
        .interface-small{
            border:1px solid rgba(220,236,228,.25);
            border-radius:12px;
            padding:17px;
            color:#c7d8d0;
        }
        .interface-small strong{display:block;color:#f2b675;font-size:24px;margin-bottom:8px}
        .preview-copy h2{font-size:35px;margin:11px 0 15px}
        .preview-copy p{color:var(--muted)}
        .faq{max-width:880px;margin:0 auto}
        .faq details{
            border-bottom:1px solid var(--line);
            padding:20px 0;
        }
        .faq summary{
            cursor:pointer;
            list-style:none;
            font-weight:800;
            font-size:17px;
            display:flex;
            justify-content:space-between;
            gap:20px;
        }
        .faq summary::-webkit-details-marker{display:none}
        .faq summary:after{content:"+";color:var(--orange);font-size:23px;line-height:1}
        .faq details[open] summary:after{content:"−"}
        .faq details p{color:var(--muted);font-size:15px;margin:14px 35px 0 0}
        .final-cta{
            padding:55px 0;
            background:var(--deep);
            color:#fff;
        }
        .final-cta-inner{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:30px;
        }
        .final-cta h2{font-size:32px;margin-bottom:10px}
        .final-cta p{color:#c7d8d0;margin-bottom:0}
        .site-footer{
            background:#0d2924;
            color:#c7d8d0;
            padding:58px 0 20px;
        }
        .footer-grid{
            display:grid;
            grid-template-columns:1.5fr 1fr 1fr 1.2fr;
            gap:35px;
        }
        .footer-brand{color:#fff;font-size:20px;font-weight:800}
        .footer-grid h3{font-size:15px;color:#f2b675;margin:0 0 15px}
        .footer-grid a:not(.footer-brand){
            display:block;
            color:#c7d8d0;
            font-size:14px;
            margin:8px 0;
        }
        .footer-grid a:hover{color:#f2b675}
        .footer-grid p{font-size:14px;color:#a9c2b8;margin-bottom:0}
        .footer-bottom{
            display:flex;
            justify-content:space-between;
            gap:20px;
            border-top:1px solid rgba(220,236,228,.15);
            margin-top:38px;
            padding-top:18px;
            color:#8fa9a0;
            font-size:13px;
        }
        @media (max-width:1024px){
            .nav{gap:18px}
            .nav-links{gap:16px}
            .download-panel,.preview-section{gap:28px}
            .footer-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:768px){
            .container{width:min(var(--container),calc(100% - 32px))}
            .nav{height:68px}
            .logo{font-size:17px}
            .nav-links{
                display:none;
                position:absolute;
                left:16px;
                right:16px;
                top:68px;
                padding:12px 18px;
                flex-direction:column;
                align-items:stretch;
                gap:0;
                background:var(--paper);
                border:1px solid var(--line);
                border-radius:0 0 14px 14px;
                box-shadow:var(--shadow);
            }
            .nav-links.open{display:flex}
            .nav-links a{padding:13px 0;border-bottom:1px solid var(--line)}
            .nav-links a:last-child{border-bottom:0}
            .nav-links a.active:after{bottom:8px;right:auto;width:28px}
            .menu-toggle{display:block;margin-left:auto}
            .nav-cta{display:none}
            .page-head{padding:42px 0 48px}
            .page-head h1{font-size:36px}
            .section{padding:64px 0}
            .section-head{display:block;margin-bottom:25px}
            .section-head p{margin-top:12px}
            .download-panel,.notice-grid,.preview-section,.version-layout{grid-template-columns:1fr}
            .download-copy{padding:27px}
            .download-copy h2,.preview-copy h2,.version-intro h2{font-size:29px}
            .download-visual{min-height:295px}
            .qr-box{margin-left:20px}
            .info-grid{grid-template-columns:1fr}
            .steps{grid-template-columns:1fr 1fr}
            .step:nth-child(2){border-right:0}
            .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
            .step:nth-child(3){border-right:1px solid var(--line)}
            .interface-board{min-height:280px}
            .final-cta-inner{display:block}
            .final-cta .btn{margin-top:22px}
        }
        @media (max-width:520px){
            .logo-mark{width:30px;height:30px;flex-basis:30px}
            .logo{font-size:15px;gap:7px}
            .page-head h1{font-size:31px}
            .page-head p{font-size:15px}
            .download-actions .btn{width:100%}
            .download-visual{padding:20px}
            .phone{width:150px;height:255px}
            .phone-title{font-size:17px;margin:16px 0 12px}
            .qr-box{width:112px;height:112px;margin-left:10px;padding:8px}
            .qr-pattern{width:58px;height:58px}
            .steps{grid-template-columns:1fr}
            .step,.step:nth-child(3){border-right:0;border-bottom:1px solid var(--line)}
            .step:last-child{border-bottom:0}
            .interface-board{grid-template-columns:1fr 1fr;padding:14px}
            .interface-main{padding:13px}
            .interface-main strong{font-size:18px;margin:20px 0 14px}
            .interface-small{padding:11px}
            .interface-small strong{font-size:18px}
            .footer-grid{grid-template-columns:1fr;gap:25px}
            .footer-bottom{display:block}
            .footer-bottom span{display:block;margin-bottom:8px}
        }