/* roulang page: index */
:root{
  --plum:#54204f;
  --plum-dark:#351536;
  --plum-soft:#f1e8f0;
  --coral:#e7835f;
  --amber:#f2b35f;
  --mint:#72b9a2;
  --ink:#29222d;
  --muted:#766d7a;
  --line:#e8dfe8;
  --warm:#fffaf7;
  --lav:#f7f1f7;
  --white:#fff;
  --radius:18px;
  --shadow:0 16px 42px rgba(67,31,64,.10);
  --container:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;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(--container),calc(100% - 48px));margin:auto}
.site-header{height:78px;background:rgba(255,250,247,.96);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
.logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
.nav-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
.btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
.btn-primary:hover,.btn-primary:focus{background:var(--plum-dark);transform:translateY(-2px)}
.btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
.btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
:focus-visible{outline:3px solid rgba(231,131,95,.45);outline-offset:3px}
.hero{padding:88px 0 72px;background:linear-gradient(125deg,#fffaf7 0%,#f8eef5 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:80px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
.hero h1{font-size:clamp(38px,5vw,60px);line-height:1.2;letter-spacing:-1.5px;color:var(--plum-dark);margin:19px 0 22px}
.hero h1 em{font-style:normal;color:var(--coral)}
.hero-copy{max-width:620px;color:var(--muted);font-size:17px;line-height:1.9}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero-note{display:flex;gap:20px;margin-top:25px;color:var(--muted);font-size:12px}
.hero-note span{display:flex;align-items:center;gap:6px}
.hero-note i{width:7px;height:7px;border-radius:50%;background:var(--mint)}
.editorial-art{position:relative;min-height:385px}
.art-panel{position:absolute;background:#fff;border:1px solid #eadce7;border-radius:22px;box-shadow:var(--shadow)}
.art-main{width:78%;right:4%;top:15px;padding:22px}
.art-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px}
.art-brand{font-size:18px;font-weight:800;color:var(--plum)}
.art-dot{width:9px;height:9px;background:var(--mint);border-radius:50%;box-shadow:0 0 0 5px #e4f3ed}
.art-feature{height:120px;margin:20px 0;background:linear-gradient(135deg,var(--plum),#9a588c);border-radius:15px;padding:20px;color:#fff}
.art-feature strong{font-size:20px;display:block;line-height:1.4}
.art-feature small{opacity:.78}
.art-lines{display:grid;gap:12px}
.art-line{height:12px;border-radius:6px;background:#eee5ef}
.art-line.short{width:62%}
.art-float{left:0;bottom:5px;width:46%;padding:17px;background:#fffaf7}
.art-float b{display:block;color:var(--plum);font-size:19px;margin-bottom:7px}
.art-float p{color:var(--muted);font-size:12px;line-height:1.6}
.section{padding:82px 0}
.section.alt{background:var(--lav)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:29px}
.section-head h2{font-size:32px;line-height:1.3;color:var(--plum-dark);margin-top:8px}
.section-head p{max-width:570px;color:var(--muted)}
.quick-bar{margin-top:-1px;background:var(--plum-dark);color:#fff;padding:18px 0}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px}
.quick-item{display:flex;align-items:center;gap:13px;padding:10px 24px;border-right:1px solid rgba(255,255,255,.16)}
.quick-item:last-child{border:0}
.quick-icon{width:35px;height:35px;border-radius:10px;background:rgba(255,255,255,.12);display:grid;place-items:center;color:var(--amber);font-weight:800}
.quick-item strong{display:block;font-size:15px}
.quick-item span{font-size:12px;color:#cbbdcb}
.news-layout{display:grid;grid-template-columns:1fr 1.18fr;gap:22px}
.feature-news{background:var(--plum);color:#fff;border-radius:var(--radius);padding:30px;min-height:290px;display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
.feature-news:before{content:"";position:absolute;width:220px;height:220px;border:35px solid rgba(255,255,255,.08);border-radius:50%;right:-50px;top:-60px}
.feature-news h3{font-size:25px;line-height:1.4;margin:13px 0 9px;position:relative}
.feature-news p{color:#dfcfe0;position:relative}
.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:9px 24px}
.news-row{display:grid;grid-template-columns:88px 1fr auto;align-items:center;gap:16px;padding:17px 0;border-bottom:1px solid var(--line)}
.news-row:last-child{border:0}
.news-row time{color:var(--coral);font-size:12px}
.news-row h3{font-size:16px;margin-bottom:2px}
.news-row p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.arrow{color:var(--plum);font-size:20px}
.tag{display:inline-flex;width:max-content;padding:3px 9px;border-radius:6px;background:var(--plum-soft);color:var(--plum);font-size:11px;font-weight:700}
.tag.orange{background:#fff0e9;color:#b85b39}
.tag.green{background:#e5f3ee;color:#397c69}
.empty-state{padding:35px;text-align:center;color:var(--muted)}
.empty-state b{display:block;color:var(--plum);font-size:17px;margin-bottom:5px}
.content-band{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
.rec-main{min-height:250px;border-radius:var(--radius);padding:29px;background:#f5dccb;position:relative;overflow:hidden}
.rec-main h3{font-size:27px;color:var(--plum-dark);max-width:420px;line-height:1.4;margin:15px 0 10px}
.rec-main p{color:#6d5554;max-width:470px}
.rec-main:after{content:"✦";position:absolute;right:50px;bottom:-25px;font-size:170px;color:rgba(84,32,79,.1)}
.rec-side{display:grid;gap:22px}
.rec-small{border-radius:var(--radius);padding:23px;background:#fff;border:1px solid var(--line)}
.rec-small h3{color:var(--plum);margin:10px 0 5px;font-size:19px}
.timeline{border-left:2px solid #dac5d8;margin:8px 0 0 12px;padding-left:28px;display:grid;gap:22px}
.timeline-item{position:relative}
.timeline-item:before{content:"";position:absolute;left:-36px;top:8px;width:12px;height:12px;background:var(--coral);border:3px solid var(--warm);border-radius:50%;box-shadow:0 0 0 1px var(--coral)}
.timeline-item time{font-size:12px;color:var(--coral);font-weight:800}
.timeline-item h3{font-size:17px;margin:3px 0}
.timeline-item p{color:var(--muted);font-size:14px}
.topic-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
.topic-card{min-height:170px;padding:25px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);position:relative;transition:.2s}
.topic-card:hover{border-color:#c59cbe;box-shadow:var(--shadow);transform:translateY(-3px)}
.topic-card.large{grid-row:span 2;background:var(--plum);color:#fff}
.topic-card h3{font-size:21px;margin:18px 0 7px;color:var(--plum)}
.topic-card.large h3{color:#fff;font-size:28px}
.topic-card p{color:var(--muted);font-size:14px}
.topic-card.large p{color:#dfcfe0}
.topic-num{font-size:12px;color:var(--coral);font-weight:800;letter-spacing:1px}
.app-showcase{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}
.device{height:360px;width:220px;margin:auto;border:8px solid var(--plum-dark);border-radius:33px;background:#fff;box-shadow:var(--shadow);padding:18px 13px}
.device-notch{width:60px;height:7px;border-radius:6px;background:#332733;margin:0 auto 23px}
.device h3{font-size:17px;color:var(--plum);margin-bottom:14px}
.device-card{height:86px;background:#f1e4ef;border-radius:12px;padding:13px;margin-bottom:12px}
.device-card b{display:block;font-size:13px;color:var(--plum-dark)}
.device-card span{font-size:11px;color:var(--muted)}
.app-copy h2{font-size:32px;color:var(--plum-dark);margin:10px 0 15px}
.app-copy p{color:var(--muted);max-width:570px}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:25px 0}
.feature-list li{list-style:none;padding-left:27px;position:relative}
.feature-list li:before{content:"✓";position:absolute;left:0;color:var(--mint);font-weight:800}
.download-zone{background:var(--plum-dark);color:#fff;border-radius:24px;padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:30px}
.download-zone h2{font-size:30px;margin:8px 0}
.download-zone p{color:#d7c9d8}
.download-meta{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px;font-size:12px;color:#c9b7ca}
.download-meta span{padding-right:18px;border-right:1px solid #644b64}
.download-meta span:last-child{border:0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{padding:24px;background:#fff;border:1px solid var(--line);border-radius:14px}
.step-number{font-size:27px;color:var(--coral);font-weight:800}
.step h3{color:var(--plum);margin:8px 0 4px}
.step p{font-size:13px;color:var(--muted)}
.update-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:50px;align-items:start}
.update-layout h2{font-size:30px;color:var(--plum-dark)}
.update-layout>div>p{color:var(--muted);margin-top:13px}
.update-list{display:grid;gap:12px}
.update-item{display:flex;gap:18px;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:12px}
.update-version{color:var(--plum);font-weight:800;min-width:64px}
.update-item p{font-size:14px;color:var(--muted)}
.trust-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.trust-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.trust-card h3{color:var(--plum);margin-bottom:8px}
.trust-card p{color:var(--muted);font-size:14px}
.notice{display:grid;grid-template-columns:1fr .7fr;gap:22px}
.notice-card{background:#fff4ed;border:1px solid #f1d4c2;border-radius:var(--radius);padding:28px}
.notice-card h3{color:#8d4935;margin:14px 0 7px}
.notice-card p{color:#765d56}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 19px}
.faq-item summary{cursor:pointer;font-weight:700;color:var(--plum);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";float:right;color:var(--coral);font-size:20px}
.faq-item[open] summary:after{content:"−"}
.faq-item p{color:var(--muted);font-size:14px;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.support{background:#f3e9f1;padding:30px;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:30px}
.support h2{font-size:26px;color:var(--plum-dark);margin:8px 0}
.support p{color:var(--muted)}
.site-footer{background:var(--plum-dark);color:#fff;padding:52px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px}
.footer-brand p{color:#cdbdce;font-size:13px;max-width:290px;margin-top:15px}
.site-footer h3{font-size:14px;margin-bottom:14px}
.site-footer ul{list-style:none;display:grid;gap:8px}
.site-footer li,.site-footer a{color:#cdbdce;font-size:13px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:17px;color:#a998aa;font-size:12px;display:flex;justify-content:space-between;gap:20px}
@media(max-width:992px){
  .main-nav{gap:0}.main-nav a{padding:8px 8px;font-size:13px}.nav-actions .btn-secondary{display:none}
  .hero-grid,.app-showcase,.update-layout{grid-template-columns:1fr;gap:40px}.hero{padding:65px 0}
  .editorial-art{max-width:560px;width:100%;margin:auto}
  .news-layout,.content-band{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .container{width:min(100% - 32px,var(--container))}
  .site-header{height:68px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .main-nav.open{display:flex}.main-nav a{padding:12px 14px}.nav-wrap{gap:10px}.logo-text{font-size:13px}.nav-actions{margin-left:auto}.nav-actions .btn{padding:8px 12px;font-size:12px}
  .section{padding:58px 0}.section-head{display:block}.section-head h2{font-size:27px}.section-head p{margin-top:10px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}.quick-item{padding:10px 8px}.quick-item:nth-child(2){border:0}.quick-item strong{font-size:13px}
  .news-row{grid-template-columns:72px 1fr}.news-row .arrow{display:none}.news-row p{font-size:12px}
  .topic-grid,.trust-grid,.faq-grid,.notice{grid-template-columns:1fr}.topic-card.large{grid-row:auto}
  .download-zone,.support{display:block;padding:28px}.download-zone .btn,.support .btn{margin-top:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
}
@media(max-width:520px){
  .hero h1{font-size:35px}.hero-copy{font-size:15px}.hero-buttons .btn{width:100%}.hero-note{gap:10px;display:grid}
  .editorial-art{min-height:310px}.art-main{width:86%;right:0}.art-float{width:55%;bottom:0}
  .quick-grid{grid-template-columns:1fr 1fr}.quick-item{font-size:12px}.quick-icon{width:29px;height:29px}
  .steps{grid-template-columns:1fr}.feature-list{grid-template-columns:1fr}.app-showcase{gap:26px}.device{transform:scale(.9);margin-top:-15px;margin-bottom:-10px}
  .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
}

/* roulang page: category1 */
:root{
      --plum:#54204f;--plum-dark:#351536;--plum-soft:#f1e8f0;--coral:#e7835f;
      --amber:#f2b35f;--mint:#72b9a2;--ink:#29222d;--muted:#766d7a;--line:#e8dfe8;
      --warm:#fffaf7;--lav:#f7f1f7;--white:#fff;--radius:18px;
      --shadow:0 16px 42px rgba(67,31,64,.10);--container:1220px
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;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(--container),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(255,250,247,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
    .logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
    .nav-actions{display:flex;align-items:center;gap:10px}.menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
    .btn-primary:hover,.btn-primary:focus{background:var(--plum-dark);transform:translateY(-2px)}
    .btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
    .btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
    .page-intro{padding:70px 0 52px;background:linear-gradient(125deg,#fffaf7,#f8eef5);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1,h2,h3{color:var(--plum-dark);line-height:1.35}h1{font-size:clamp(36px,5vw,56px);letter-spacing:-1px;margin:18px 0 16px}
    h2{font-size:32px;margin:8px 0}h3{font-size:19px;margin:0 0 8px}
    .intro-copy{max-width:700px;color:var(--muted);font-size:17px}
    .intro-meta{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow)}
    .meta-line{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid var(--line);color:var(--muted)}
    .meta-line:last-child{border:0}.meta-line strong{color:var(--plum)}
    .section{padding:72px 0}.section.alt{background:var(--lav)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .filter{border:1px solid var(--line);background:var(--warm);color:var(--muted);border-radius:9px;padding:8px 15px;font-size:13px}
    .filter.active,.filter:hover{background:var(--plum);border-color:var(--plum);color:#fff}
    .content-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:start}
    .news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 26px}
    .news-row{display:grid;grid-template-columns:94px 1fr auto;align-items:center;gap:17px;padding:19px 0;border-bottom:1px solid var(--line)}
    .news-row:last-child{border:0}.news-row time{color:var(--coral);font-size:12px}
    .news-row h3{font-size:17px;margin:0 0 3px}.news-row p{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .arrow{color:var(--plum);font-size:21px}.tag{display:inline-flex;width:max-content;padding:3px 9px;border-radius:6px;background:var(--plum-soft);color:var(--plum);font-size:11px;font-weight:700}
    .tag.orange{background:#fff0e9;color:#b85b39}.tag.green{background:#e5f3ee;color:#397c69}
    .featured{background:var(--plum);color:#fff;border-radius:var(--radius);padding:30px;min-height:305px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:end}
    .featured:before{content:"✦";position:absolute;right:20px;top:-28px;font-size:150px;color:rgba(255,255,255,.09)}
    .featured h3{color:#fff;font-size:25px;margin:15px 0 10px}.featured p{color:#dfcfe0;margin:0}.featured .tag{background:rgba(255,255,255,.14);color:#fff}
    .more{text-align:center;margin-top:25px}
    .split-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s}
    .info-card:hover{border-color:#c59cbe;box-shadow:var(--shadow);transform:translateY(-3px)}.info-card p{color:var(--muted);margin:0}
    .icon{width:42px;height:42px;border-radius:12px;background:var(--plum-soft);color:var(--plum);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .notice{display:grid;grid-template-columns:100px 1fr auto;gap:20px;align-items:center;padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px}
    .notice strong{color:var(--plum);font-size:20px}.notice p{margin:0;color:var(--muted)}
    .faq{border-top:1px solid var(--line)}details{background:#fff;border-bottom:1px solid var(--line);padding:18px 2px}summary{cursor:pointer;font-weight:700;color:var(--plum-dark);list-style:none;display:flex;justify-content:space-between}summary:after{content:"＋";color:var(--coral)}details[open] summary:after{content:"－"}details p{color:var(--muted);margin:12px 30px 0 0}
    .download-cta{background:var(--plum-dark);color:#fff;border-radius:var(--radius);padding:38px;display:flex;justify-content:space-between;align-items:center;gap:25px}.download-cta h2{color:#fff;margin:0 0 8px}.download-cta p{color:#decfdf;margin:0}
    .site-footer{background:var(--plum-dark);color:#fff;padding:58px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}.footer-brand p{color:#cbbdcb;max-width:300px;margin-top:17px}.site-footer h3{color:#fff;font-size:15px;margin:0 0 15px}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:8px 0;color:#cbbdcb;font-size:13px}.site-footer li a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#a999aa;font-size:12px}
    :focus-visible{outline:3px solid var(--amber);outline-offset:3px}
    @media(max-width:992px){.main-nav{gap:0}.main-nav a{padding:8px 8px}.intro-grid{gap:35px}.content-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
    @media(max-width:768px){.site-header{height:68px}.nav-wrap{gap:10px}.nav-actions .btn-secondary{display:none}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--warm);padding:12px 24px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px 14px}.page-intro{padding:52px 0 38px}.intro-grid{grid-template-columns:1fr}.section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:12px}.news-row{grid-template-columns:76px 1fr auto;gap:10px}.news-row p{display:none}.notice{grid-template-columns:70px 1fr}.notice .btn{grid-column:2;justify-self:start}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}
    @media(max-width:520px){.container{width:min(var(--container),calc(100% - 30px))}.logo-text{font-size:14px}.logo-text small{font-size:8px}.nav-actions .btn-primary{padding:9px 11px;font-size:12px}.page-intro h1{font-size:36px}.split-cards{grid-template-columns:1fr}.news-list{padding:5px 15px}.news-row{grid-template-columns:68px 1fr auto}.download-cta{padding:28px 22px;display:block}.download-cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}}

/* roulang page: article */
:root{
      --plum:#54204f;
      --plum-dark:#351536;
      --plum-soft:#f1e8f0;
      --coral:#e7835f;
      --amber:#f2b35f;
      --mint:#72b9a2;
      --ink:#29222d;
      --muted:#766d7a;
      --line:#e8dfe8;
      --warm:#fffaf7;
      --lav:#f7f1f7;
      --white:#fff;
      --radius:18px;
      --shadow:0 16px 42px rgba(67,31,64,.10);
      --container:1220px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--plum)}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(231,131,95,.55);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(255,250,247,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
    .logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
    .btn-primary:hover,.btn-primary:focus{color:#fff;background:var(--plum-dark);transform:translateY(-2px)}
    .btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
    .btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
    .article-hero{padding:68px 0 54px;background:linear-gradient(125deg,#fffaf7 0%,#f8eef5 100%);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:28px;flex-wrap:wrap}
    .breadcrumb a{color:var(--plum)}
    .breadcrumb .current{color:#9a8c9a;max-width:620px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .article-heading{max-width:900px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    .article-heading h1{font-size:clamp(32px,4.6vw,56px);line-height:1.28;letter-spacing:-1.2px;color:var(--plum-dark);margin:17px 0 19px}
    .article-meta{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:13px;flex-wrap:wrap}
    .meta-divider{width:4px;height:4px;border-radius:50%;background:#c9b7c7}
    .tag{display:inline-flex;width:max-content;padding:3px 9px;border-radius:6px;background:var(--plum-soft);color:var(--plum);font-size:11px;font-weight:700}
    .tag.orange{background:#fff0e9;color:#b85b39}
    .tag.green{background:#e5f3ee;color:#397c69}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 280px;gap:62px;align-items:start;padding:70px 0 82px}
    .article-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(25px,4vw,58px);box-shadow:0 8px 25px rgba(67,31,64,.04);font-size:17px;line-height:2}
    .article-content h2{color:var(--plum-dark);font-size:28px;line-height:1.4;margin:34px 0 14px}
    .article-content h3{color:var(--plum);font-size:21px;line-height:1.5;margin:28px 0 10px}
    .article-content p{margin:0 0 20px}
    .article-content ul,.article-content ol{padding-left:27px;margin:10px 0 24px}
    .article-content li{margin:7px 0}
    .article-content blockquote{margin:26px 0;padding:18px 22px;border-left:4px solid var(--coral);background:var(--lav);color:#625665;border-radius:0 12px 12px 0}
    .article-content img{border-radius:13px;margin:25px auto}
    .article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
    .article-content th,.article-content td{padding:11px 13px;border:1px solid var(--line);text-align:left}
    .article-content th{background:var(--plum-soft);color:var(--plum-dark)}
    .reading-aside{position:sticky;top:108px}
    .aside-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px;margin-bottom:16px}
    .aside-card h3{font-size:16px;color:var(--plum-dark);margin:0 0 13px}
    .aside-card p{font-size:13px;color:var(--muted);margin:0}
    .aside-line{height:1px;background:var(--line);margin:17px 0}
    .aside-link{display:flex;align-items:center;justify-content:space-between;padding:8px 0;color:var(--plum);font-size:14px;border-bottom:1px solid #f1e9f0}
    .aside-link:last-child{border:0}
    .support-note{background:var(--plum);color:#fff;border-radius:15px;padding:22px}
    .support-note h3{color:#fff;margin-bottom:9px}
    .support-note p{color:#e5d6e4;font-size:13px;margin-bottom:15px}
    .support-note .btn{width:100%;background:#fff;color:var(--plum)}
    .article-empty{padding:70px 25px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .article-empty .empty-icon{width:58px;height:58px;border-radius:18px;background:var(--plum-soft);color:var(--plum);display:grid;place-items:center;margin:0 auto 18px;font-size:25px}
    .article-empty h2{color:var(--plum-dark);margin:0 0 8px}
    .article-empty p{color:var(--muted);margin:0 0 22px}
    .related-section{padding:0 0 82px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:25px}
    .section-head h2{font-size:30px;line-height:1.3;color:var(--plum-dark);margin:8px 0 0}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:23px;transition:.22s}
    .related-card:hover{border-color:#c59cbe;box-shadow:var(--shadow);transform:translateY(-3px)}
    .related-card h3{font-size:18px;color:var(--plum-dark);line-height:1.5;margin:15px 0 8px}
    .related-card p{font-size:14px;color:var(--muted);margin:0 0 17px}
    .read-link{font-size:13px;color:var(--plum);font-weight:800}
    .feedback{background:var(--lav);border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-top:28px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .feedback strong{display:block;color:var(--plum-dark);margin-bottom:3px}
    .feedback span{font-size:13px;color:var(--muted)}
    .feedback-actions{display:flex;gap:8px}
    .feedback-actions button{border:1px solid #d6c4d4;background:#fff;color:var(--plum);border-radius:9px;padding:8px 13px}
    .feedback-actions button:hover{background:var(--plum-soft)}
    .site-footer{background:var(--plum-dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand .logo-text{color:#fff}
    .footer-brand p{color:#cdbdcd;max-width:310px;font-size:13px;margin-top:18px}
    .site-footer h3{font-size:15px;margin:3px 0 15px}
    .site-footer ul{list-style:none;padding:0;margin:0}
    .site-footer li{margin:8px 0}
    .site-footer li a{color:#cdbdcd;font-size:13px;transition:.2s}
    .site-footer li a:hover{color:#fff;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;gap:18px;color:#a996aa;font-size:12px;flex-wrap:wrap}
    @media (max-width:1100px){
      .main-nav{gap:0}
      .main-nav a{padding:8px 9px}
      .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:30px}
    }
    @media (max-width:820px){
      .site-header{height:70px}
      .container{width:min(var(--container),calc(100% - 34px))}
      .main-nav{display:none;position:absolute;left:17px;right:17px;top:78px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .menu-toggle{display:block}
      .nav-actions .btn-secondary{display:none}
      .nav-actions{gap:7px}
      .article-hero{padding:48px 0 42px}
      .article-layout{display:block;padding:44px 0 58px}
      .reading-aside{position:static;margin-top:25px}
      .aside-card{display:none}
      .support-note{display:flex;align-items:center;gap:18px;justify-content:space-between}
      .support-note p{margin:0}
      .support-note .btn{width:auto;white-space:nowrap}
      .related-section{padding-bottom:58px}
      .related-grid{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }
    @media (max-width:520px){
      .container{width:calc(100% - 28px)}
      .logo-text{font-size:13px}
      .logo-text small{font-size:8px}
      .logo-mark{width:32px;height:32px}
      .nav-actions>.btn-primary{padding:9px 11px;font-size:12px}
      .article-heading h1{font-size:32px}
      .article-meta{gap:8px}
      .article-content{padding:23px 19px;font-size:16px;line-height:1.9}
      .article-content h2{font-size:24px}
      .article-content h3{font-size:19px}
      .related-grid{grid-template-columns:1fr}
      .feedback{display:block}
      .feedback-actions{margin-top:15px}
      .support-note{display:block}
      .support-note .btn{width:100%;margin-top:15px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-bottom:7px}
    }

/* roulang page: category3 */
:root{
      --plum:#54204f;--plum-dark:#351536;--plum-soft:#f1e8f0;--coral:#e7835f;
      --amber:#f2b35f;--mint:#72b9a2;--ink:#29222d;--muted:#766d7a;--line:#e8dfe8;
      --warm:#fffaf7;--lav:#f7f1f7;--white:#fff;--radius:18px;
      --shadow:0 16px 42px rgba(67,31,64,.10);--container:1220px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus,button:focus,input:focus,textarea:focus{outline:3px solid rgba(231,131,95,.35);outline-offset:2px}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(255,250,247,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
    .logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
    .btn-primary:hover,.btn-primary:focus{background:var(--plum-dark);transform:translateY(-2px)}
    .btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
    .btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
    .page-intro{padding:55px 0 38px;background:linear-gradient(125deg,#fffaf7,#f8eef5);border-bottom:1px solid var(--line)}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:25px}
    .breadcrumb a{color:var(--plum)}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    .page-intro h1{font-size:clamp(34px,5vw,54px);line-height:1.2;letter-spacing:-1px;color:var(--plum-dark);margin:14px 0}
    .page-intro p{max-width:760px;color:var(--muted);font-size:17px;margin:0}
    .section{padding:76px 0}
    .section.alt{background:var(--lav)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:28px}
    .section-head h2{font-size:31px;line-height:1.3;color:var(--plum-dark);margin:8px 0 0}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .download-stage{display:grid;grid-template-columns:1fr 1.05fr;gap:74px;align-items:center}
    .device-area{min-height:425px;background:#eee3eb;border-radius:28px;position:relative;display:grid;place-items:center;overflow:hidden}
    .device-area:before,.device-area:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(84,32,79,.12)}
    .device-area:before{width:350px;height:350px}.device-area:after{width:490px;height:490px}
    .phone{position:relative;z-index:1;width:225px;height:400px;background:#201b24;border:8px solid #17131b;border-radius:32px;padding:8px;box-shadow:0 22px 35px rgba(53,21,54,.25);transform:rotate(-5deg)}
    .phone-screen{height:100%;border-radius:22px;background:#fffaf7;overflow:hidden}
    .phone-top{height:48px;background:var(--plum);color:#fff;padding:13px 15px;font-size:11px;font-weight:700}
    .phone-card{margin:14px;height:105px;border-radius:14px;background:linear-gradient(135deg,var(--plum),#955681);padding:16px;color:#fff}
    .phone-card b{display:block;font-size:17px;margin-bottom:8px}.phone-card small{opacity:.78}
    .phone-line{height:10px;border-radius:5px;background:#eadfea;margin:12px 15px}
    .phone-line.short{width:52%}
    .download-copy h2{font-size:33px;color:var(--plum-dark);line-height:1.35;margin:14px 0}
    .download-copy p{color:var(--muted);font-size:16px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}
    .version-box{display:flex;gap:20px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
    .version-box strong{display:block;color:var(--ink);font-size:16px}
    .tag{display:inline-flex;width:max-content;padding:3px 9px;border-radius:6px;background:var(--plum-soft);color:var(--plum);font-size:11px;font-weight:700}
    .tag.orange{background:#fff0e9;color:#b85b39}.tag.green{background:#e5f3ee;color:#397c69}
    .qr-box{width:112px;height:112px;border:9px solid #fff;background:repeating-linear-gradient(45deg,#54204f 0 4px,#fff 4px 8px);box-shadow:0 5px 15px rgba(0,0,0,.08);border-radius:8px}
    .qr-note{font-size:12px;color:var(--muted);max-width:180px}
    .feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .feature-card,.support-card,.update-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 5px 18px rgba(67,31,64,.04)}
    .feature-card.primary{background:var(--plum);color:#fff;min-height:215px}
    .feature-card.primary p{color:#e4d5e3}.feature-card h3{font-size:22px;margin:14px 0 8px}
    .feature-card p{color:var(--muted);margin:0}
    .mini-features{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .mini-features .feature-card{min-height:98px;padding:21px}
    .mini-features h3{font-size:17px;margin:0 0 3px}
    .mini-features p{font-size:13px}
    .content-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:22px}
    .content-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 25px}
    .content-row{display:grid;grid-template-columns:100px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
    .content-row:last-child{border-bottom:0}
    .content-row time{color:var(--coral);font-size:12px;white-space:nowrap}
    .content-row h3{font-size:16px;margin:0 0 3px}
    .content-row p{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .arrow{font-size:20px;color:var(--plum)}
    .empty-state{padding:42px 15px;text-align:center;color:var(--muted)}
    .empty-state strong{display:block;color:var(--plum);font-size:17px;margin-bottom:5px}
    .updates{display:grid;gap:14px}
    .update-item{display:flex;gap:18px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--line)}
    .update-item:last-child{border:0}
    .update-item time{color:var(--coral);font-size:12px;min-width:84px}
    .update-item h3{font-size:16px;margin:0 0 4px}.update-item p{font-size:13px;color:var(--muted);margin:0}
    .install-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .install-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .install-num{width:35px;height:35px;border-radius:10px;background:var(--plum-soft);color:var(--plum);display:grid;place-items:center;font-weight:800}
    .install-card h3{font-size:18px;margin:17px 0 7px}.install-card p{color:var(--muted);font-size:14px;margin:0}
    .notice{display:flex;gap:15px;align-items:flex-start;padding:19px 22px;background:#fff5eb;border:1px solid #f1d2bc;border-radius:14px;color:#765349}
    .notice strong{color:#a65338;display:block}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
    .faq-item summary{list-style:none;padding:17px 20px;font-weight:700;color:var(--plum-dark);cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";float:right;color:var(--coral);font-size:19px}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{padding:0 20px 18px;color:var(--muted);font-size:14px;margin:0}
    .cta{padding:34px 38px;background:var(--plum);border-radius:var(--radius);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:27px;margin:0 0 6px}.cta p{color:#dfcfe0;margin:0}
    .site-footer{background:var(--plum-dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#cdbdce;max-width:300px;font-size:13px;margin-top:18px}
    .site-footer h3{font-size:15px;margin:4px 0 15px}.site-footer ul{list-style:none;padding:0;margin:0}
    .site-footer li{margin:8px 0}.site-footer li a{color:#cdbdce;font-size:13px;transition:.2s}
    .site-footer li a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);margin-top:38px;padding-top:18px;color:#a99aaa;font-size:12px}
    @media(max-width:992px){.main-nav{gap:0}.main-nav a{padding:8px 8px}.nav-actions .btn-secondary{display:none}.download-stage,.content-layout,.feature-grid{grid-template-columns:1fr;gap:30px}.device-area{min-height:360px}.footer-grid{grid-template-columns:2fr 1fr 1fr}}
    @media(max-width:768px){.site-header{height:70px}.container{width:min(var(--container),calc(100% - 32px))}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:70px;left:16px;right:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px 14px}.nav-actions{margin-left:auto}.nav-actions .btn-primary{display:none}.page-intro{padding:38px 0 30px}.section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:10px}.install-grid,.faq-grid,.mini-features{grid-template-columns:1fr}.content-row{grid-template-columns:78px 1fr auto;gap:10px}.content-row p{white-space:normal}.cta{display:block;padding:27px}.cta .btn{margin-top:18px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
    @media(max-width:520px){.logo-text{font-size:13px}.logo-text small{font-size:8px}.page-intro h1{font-size:34px}.download-copy h2{font-size:28px}.device-area{min-height:320px}.phone{transform:scale(.82) rotate(-5deg)}.content-row{grid-template-columns:1fr auto}.content-row time{grid-column:1/-1}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}

/* roulang page: category4 */
:root{
      --plum:#54204f;
      --plum-dark:#351536;
      --plum-soft:#f1e8f0;
      --coral:#e7835f;
      --amber:#f2b35f;
      --mint:#72b9a2;
      --ink:#29222d;
      --muted:#766d7a;
      --line:#e8dfe8;
      --warm:#fffaf7;
      --lav:#f7f1f7;
      --white:#fff;
      --radius:18px;
      --shadow:0 16px 42px rgba(67,31,64,.10);
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(231,131,95,.45);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(255,250,247,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
    .logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
    .btn-primary:hover,.btn-primary:focus{background:var(--plum-dark);transform:translateY(-2px)}
    .btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
    .btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
    .page-intro{padding:72px 0 52px;background:linear-gradient(125deg,#fffaf7 0%,#f8eef5 100%);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,56px);line-height:1.22;letter-spacing:-1.5px;color:var(--plum-dark);margin:18px 0}
    .intro-copy{max-width:700px;color:var(--muted);font-size:17px;line-height:1.9;margin-bottom:0}
    .intro-meta{display:flex;justify-content:flex-end;gap:12px;flex-wrap:wrap}
    .meta-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 20px;min-width:145px;box-shadow:0 8px 22px rgba(67,31,64,.06)}
    .meta-box strong{display:block;color:var(--plum);font-size:21px}
    .meta-box span{display:block;color:var(--muted);font-size:12px}
    .section{padding:76px 0}
    .section.alt{background:var(--lav)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
    .section-head h2{font-size:31px;line-height:1.3;color:var(--plum-dark);margin:8px 0 0}
    .section-head p{max-width:580px;color:var(--muted);margin-bottom:0}
    .tag-row{display:flex;gap:10px;flex-wrap:wrap}
    .tag{display:inline-flex;width:max-content;padding:6px 12px;border-radius:7px;background:var(--plum-soft);color:var(--plum);font-size:12px;font-weight:700}
    .tag.orange{background:#fff0e9;color:#b85b39}
    .tag.green{background:#e5f3ee;color:#397c69}
    .help-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:25px;align-items:start}
    .content-panel,.side-panel,.faq-item,.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .content-panel{padding:12px 28px}
    .news-row{display:grid;grid-template-columns:92px 1fr auto;align-items:center;gap:17px;padding:20px 0;border-bottom:1px solid var(--line)}
    .news-row:last-child{border-bottom:0}
    .news-row time{color:var(--coral);font-size:12px;font-weight:700}
    .news-row h3{font-size:16px;margin:0 0 3px;color:var(--plum-dark)}
    .news-row p{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .arrow{color:var(--plum);font-size:21px}
    .empty-state{text-align:center;padding:48px 20px;color:var(--muted)}
    .empty-icon{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--plum-soft);color:var(--plum);font-size:22px;margin:0 auto 12px}
    .side-panel{padding:27px;background:var(--plum);color:#fff}
    .side-panel h3{font-size:23px;line-height:1.4;margin-bottom:12px}
    .side-panel p{color:#dfcfe0;font-size:14px}
    .side-panel ul{padding:0;margin:20px 0 0;list-style:none}
    .side-panel li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.16);color:#f3e9f1}
    .side-panel li:last-child{border:0}
    .guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .step-card{padding:23px;min-height:190px;transition:.2s}
    .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c59cbe}
    .step-no{font-size:30px;font-weight:800;color:var(--coral);line-height:1}
    .step-card h3{font-size:18px;color:var(--plum-dark);margin:16px 0 8px}
    .step-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .notice-card{padding:28px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
    .notice-card h3{font-size:21px;color:var(--plum-dark);margin:15px 0 8px}
    .notice-card p{color:var(--muted);margin-bottom:0}
    .faq-list{max-width:900px;margin:auto}
    .faq-item{margin-bottom:12px;overflow:hidden}
    .faq-item summary{padding:19px 23px;color:var(--plum-dark);font-weight:700;cursor:pointer;list-style:none;position:relative;padding-right:52px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:22px;color:var(--coral);font-size:23px;top:13px}
    .faq-item[open] summary{background:var(--plum-soft)}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 23px 20px;color:var(--muted);font-size:14px}
    .cta{padding:38px 42px;background:#f5dccb;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:28px}
    .cta h2{color:var(--plum-dark);font-size:28px;margin-bottom:9px}
    .cta p{color:#6d5554;margin:0;max-width:650px}
    .site-footer{background:var(--plum-dark);color:#fff;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
    .footer-brand p{color:#cbbdcb;font-size:13px;max-width:310px;margin-top:19px}
    .site-footer h3{font-size:15px;margin:4px 0 16px;color:#fff}
    .site-footer ul{list-style:none;padding:0;margin:0}
    .site-footer li{margin:8px 0;color:#cbbdcb;font-size:13px}
    .site-footer li a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;color:#a99baa;font-size:12px}
    @media(max-width:992px){
      .main-nav{display:none;position:absolute;left:24px;right:24px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 15px}
      .menu-toggle{display:block}
      .nav-actions .btn-secondary{display:none}
      .intro-grid,.help-layout{grid-template-columns:1fr;gap:28px}
      .intro-meta{justify-content:flex-start}
      .guide-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:2fr 1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}
      .site-header{height:70px}
      .page-intro{padding:52px 0 42px}
      .section{padding:55px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .news-row{grid-template-columns:1fr auto;gap:8px}
      .news-row time{grid-column:1/-1}
      .news-row p{white-space:normal}
      .notice-grid{grid-template-columns:1fr}
      .cta{display:block;padding:30px 25px}
      .cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:6px 0}
    }
    @media(max-width:520px){
      h1{font-size:36px}
      .logo-text{font-size:14px}
      .logo-text small{font-size:8px}
      .nav-actions .btn-primary{padding:9px 12px;font-size:12px}
      .guide-grid{grid-template-columns:1fr}
      .content-panel{padding:8px 18px}
      .intro-meta{display:grid;grid-template-columns:1fr 1fr}
      .meta-box{min-width:0;padding:14px}
      .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category2 */
:root{
      --plum:#54204f;--plum-dark:#351536;--plum-soft:#f1e8f0;--coral:#e7835f;
      --amber:#f2b35f;--mint:#72b9a2;--ink:#29222d;--muted:#766d7a;
      --line:#e8dfe8;--warm:#fffaf7;--lav:#f7f1f7;--white:#fff;--radius:18px;
      --shadow:0 16px 42px rgba(67,31,64,.10);--container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus,button:focus,input:focus,textarea:focus{outline:3px solid rgba(231,131,95,.35);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(255,250,247,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:11px;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
    .logo-text{font-weight:800;letter-spacing:.2px;color:var(--plum-dark)}
    .logo-text small{display:block;color:var(--coral);font-size:10px;line-height:1.1;letter-spacing:1.3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;border-radius:10px;color:#5d5361;font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--plum);background:var(--plum-soft)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{display:none;border:0;background:var(--plum-soft);color:var(--plum);width:40px;height:40px;border-radius:10px;font-size:21px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 19px;border-radius:11px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .btn-primary{color:#fff;background:var(--plum);box-shadow:0 8px 18px rgba(84,32,79,.2)}
    .btn-primary:hover,.btn-primary:focus{background:var(--plum-dark);transform:translateY(-2px)}
    .btn-secondary{color:var(--plum);background:#fff;border-color:#cdb9cb}
    .btn-secondary:hover,.btn-secondary:focus{background:var(--plum-soft);transform:translateY(-2px)}
    .page-intro{padding:70px 0 54px;background:linear-gradient(125deg,#fffaf7,#f8eef5)}
    .intro-grid{display:grid;grid-template-columns:1fr .7fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1,h2,h3{color:var(--plum-dark);line-height:1.35}
    h1{font-size:clamp(34px,5vw,56px);letter-spacing:-1.5px;margin:17px 0 18px}
    .intro-copy{max-width:700px;color:var(--muted);font-size:17px}
    .intro-meta{border-left:3px solid var(--coral);padding:8px 0 8px 22px;color:var(--muted)}
    .intro-meta strong{display:block;color:var(--plum);font-size:17px;margin-bottom:4px}
    .section{padding:76px 0}
    .section.alt{background:var(--lav)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
    .section-head h2{font-size:32px;margin:8px 0 0}
    .section-head p{max-width:580px;color:var(--muted);margin:0}
    .filter-bar{display:flex;gap:10px;flex-wrap:wrap;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 25px rgba(67,31,64,.05)}
    .filter{padding:8px 15px;border-radius:9px;background:var(--plum-soft);color:var(--plum);font-size:13px;font-weight:700}
    .filter.active{background:var(--plum);color:#fff}
    .topic-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .topic-feature{min-height:310px;padding:34px;border-radius:var(--radius);background:var(--plum);color:#fff;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:end}
    .topic-feature:after{content:"✦";position:absolute;right:36px;top:10px;color:rgba(255,255,255,.12);font-size:160px}
    .topic-feature h3{color:#fff;font-size:29px;max-width:490px;margin:14px 0 8px;position:relative}
    .topic-feature p{color:#eadbea;max-width:520px;position:relative}
    .tag{display:inline-flex;width:max-content;padding:3px 9px;border-radius:6px;background:var(--plum-soft);color:var(--plum);font-size:11px;font-weight:700}
    .tag.orange{background:#fff0e9;color:#b85b39}.tag.green{background:#e5f3ee;color:#397c69}
    .topic-side{display:grid;gap:18px}
    .topic-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.2s}
    .topic-card:hover{border-color:#c59cbe;box-shadow:var(--shadow);transform:translateY(-3px)}
    .topic-card h3{font-size:20px;margin:13px 0 6px}
    .topic-card p,.scene-card p,.faq-answer{color:var(--muted);font-size:14px;margin:0}
    .content-layout{display:grid;grid-template-columns:1fr 330px;gap:30px;align-items:start}
    .content-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:7px 25px}
    .content-row{display:grid;grid-template-columns:100px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
    .content-row:last-child{border-bottom:0}
    .content-row time{color:var(--coral);font-size:12px;font-weight:700}
    .content-row h3{font-size:17px;margin:0 0 3px}
    .content-row p{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .arrow{font-size:21px;color:var(--plum)}
    .empty{padding:55px 20px;text-align:center;color:var(--muted)}
    .scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
    .scene-card h3{font-size:20px;margin:0 0 8px}
    .scene-icon{width:42px;height:42px;border-radius:12px;background:#fff0e9;color:var(--coral);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .notice{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:24px 28px;background:#fff4e8;border:1px solid #f4d9ba;border-radius:14px}
    .notice strong{color:var(--plum-dark);display:block;font-size:17px}
    .notice span{color:var(--muted);font-size:14px}
    .faq-list{max-width:880px;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item summary{padding:19px 4px;color:var(--plum-dark);font-weight:700;cursor:pointer;list-style:none}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";float:right;color:var(--coral);font-size:20px}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 35px 20px 4px}
    .cta{padding:65px 0;background:var(--plum-dark);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{color:#fff;font-size:30px;margin:0 0 8px}.cta p{color:#d8c8d9;margin:0}
    .site-footer{background:#251426;color:#e8dce8;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px}
    .footer-brand p{color:#b9aaba;max-width:310px;font-size:14px;margin-top:18px}
    .site-footer h3{color:#fff;font-size:15px;margin:4px 0 16px}
    .site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:9px 0}
    .site-footer li a{color:#b9aaba;font-size:13px}.site-footer li a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:17px;display:flex;justify-content:space-between;gap:20px;color:#99869b;font-size:12px}
    @media(max-width:992px){.intro-grid,.topic-layout,.content-layout{grid-template-columns:1fr;gap:28px}.main-nav{display:none}.nav-actions .btn-secondary{display:none}.menu-toggle{display:block}.nav-wrap{gap:12px}.nav-wrap .logo{margin-right:auto}.scene-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:600px){.container{width:min(var(--container),calc(100% - 32px))}.site-header{height:68px}.logo-text{font-size:14px}.logo-text small{font-size:8px}.page-intro{padding:52px 0 40px}h1{font-size:36px}.section{padding:52px 0}.section-head{display:block}.section-head h2{font-size:27px;margin-bottom:10px}.content-list{padding:5px 17px}.content-row{grid-template-columns:1fr auto;gap:5px 10px}.content-row time{grid-column:1/-1}.content-row p{white-space:normal}.scene-grid{grid-template-columns:1fr}.topic-feature{min-height:270px;padding:25px}.cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}