/* roulang page: index */
:root{
  --ink:#1e2428;
  --ink-soft:#485258;
  --muted:#788087;
  --paper:#f5f2ec;
  --card:#fffdfa;
  --line:#e5dfd5;
  --orange:#e87532;
  --orange-deep:#c95d22;
  --mint:#46a89a;
  --mint-soft:#e0f1ed;
  --amber-soft:#fff0e5;
  --dark:#202a2d;
  --radius:16px;
  --shadow:0 14px 34px rgba(30,36,40,.07);
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border .2s ease,transform .2s ease}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:76px;background:rgba(245,242,236,.96);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:250px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}
.brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}
.brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}
.brand strong{font-size:17px;letter-spacing:.01em}
.brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
.main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
.main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}
.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}
.nav-download{background:var(--ink)!important;color:#fff!important;border:0!important;border-radius:9px;padding:10px 16px!important}
.nav-download:hover,.nav-download:focus{background:var(--orange)!important;transform:translateY(-1px)}
.menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
:focus-visible{outline:3px solid rgba(232,117,50,.38);outline-offset:4px}
.hero{padding:80px 0 68px;background:var(--dark);color:#fff;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:70px;align-items:center}
.eyebrow{color:#f0a16d;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:18px}
.hero h1{font-size:clamp(40px,5vw,62px);line-height:1.16;letter-spacing:-.04em;max-width:620px}
.hero-copy{color:#c8d0cf;font-size:17px;max-width:580px;margin:24px 0 32px}
.actions{display:flex;flex-wrap:wrap;gap:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px;transition:.2s ease}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-deep);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#e9f4f1;transform:translateY(-2px)}
.btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--orange);background:var(--amber-soft)}
.hero-visual{min-height:360px;position:relative}
.desktop-window{position:absolute;right:0;top:10px;width:86%;height:245px;border:1px solid #526064;border-radius:14px;background:#293538;box-shadow:0 22px 50px rgba(0,0,0,.25);padding:17px}
.window-top{display:flex;gap:6px;margin-bottom:18px}
.window-top i{width:7px;height:7px;border-radius:50%;background:#e87532}
.window-top i:nth-child(2){background:#d2b36b}.window-top i:nth-child(3){background:#66b7a6}
.visual-line{height:10px;background:#435356;border-radius:8px;margin:13px 0;width:75%}
.visual-line.short{width:43%}
.visual-columns{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:11px;margin-top:24px}
.visual-columns span{height:86px;border-radius:8px;background:#37474a;border-left:4px solid var(--mint)}
.phone-window{position:absolute;left:9%;bottom:4px;width:150px;height:286px;border:7px solid #111b1d;border-radius:25px;background:#fffdfa;color:var(--ink);padding:17px 12px;box-shadow:0 20px 40px rgba(0,0,0,.28)}
.phone-notch{width:46px;height:5px;border-radius:4px;background:#242c2e;margin:0 auto 20px}
.phone-window b{font-size:12px}.phone-card{height:42px;background:var(--mint-soft);border-radius:8px;margin-top:14px}.phone-button{height:27px;background:var(--orange);border-radius:6px;margin-top:15px}
.float-tag{position:absolute;right:4%;bottom:33px;background:#fff;color:var(--ink);padding:14px 17px;border-radius:12px;box-shadow:var(--shadow);font-size:13px}.float-tag strong{display:block;color:var(--mint);font-size:18px}
.section{padding:92px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}.section-kicker{font-size:12px;color:var(--orange-deep);font-weight:800;letter-spacing:.1em;margin-bottom:8px}.section h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-.03em}.section-intro{color:var(--muted);max-width:530px;font-size:15px}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.entry-card{background:var(--card);border:1px solid var(--line);padding:22px 23px;display:flex;gap:16px;align-items:flex-start;min-height:128px;border-radius:13px}
.entry-card:nth-child(2){margin-top:18px}.entry-card:nth-child(5){margin-top:-12px}
.entry-card:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-2px)}
.entry-no{font-size:13px;color:var(--orange);font-weight:800}.entry-card h3{font-size:18px;margin-bottom:5px}.entry-card p{font-size:13px;color:var(--muted)}
.device-section{background:#e9e4db}.devices{display:grid;grid-template-columns:1.15fr 1fr 1fr;align-items:end;gap:18px}
.device{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;position:relative}
.device.large{height:260px}.device.medium{height:218px}.device.small{height:180px}
.device-label{display:inline-block;background:var(--mint-soft);color:#287d72;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:700}
.screen{margin-top:22px;background:#f0ece5;border-radius:10px;padding:14px;height:150px}.device.medium .screen{height:113px}.device.small .screen{height:75px}
.screen b{display:block;font-size:13px;margin-bottom:12px}.screen i{display:block;height:9px;background:#d8d2c8;margin:9px 0;border-radius:4px;width:76%}.screen i:last-child{width:47%;background:#f0a16d}
.download-panel{display:grid;grid-template-columns:1fr 1.1fr;gap:34px;background:var(--dark);color:#fff;border-radius:20px;padding:35px;align-items:center}
.app-preview{min-height:250px;background:#344346;border-radius:14px;display:flex;justify-content:center;align-items:end;position:relative;overflow:hidden}.app-preview:after{content:"大发电子";font-size:42px;font-weight:800;color:#fff;opacity:.12;position:absolute;top:40px}
.app-screen{width:150px;height:220px;border-radius:19px 19px 0 0;background:#fffdfa;padding:18px;color:var(--ink);position:relative;z-index:1}.app-screen strong{font-size:16px}.app-screen .phone-card{height:56px}.download-panel h2{font-size:30px;line-height:1.3;margin-bottom:12px}.download-panel p{color:#c5cecc;font-size:14px}.platforms{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.platforms span,.badge{font-size:12px;border:1px solid #637274;border-radius:20px;padding:4px 10px;color:#e1e8e6}.download-note{color:#aebbb8!important;font-size:12px!important;margin-top:14px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:25px 22px 10px;border-right:1px solid var(--line);position:relative}.step:last-child{border-right:0}.step:before{content:"";position:absolute;top:-6px;left:22px;width:11px;height:11px;background:var(--orange);border-radius:50%;box-shadow:0 0 0 5px var(--paper)}
.step b{display:block;color:var(--orange-deep);font-size:13px;margin-bottom:10px}.step h3{font-size:18px;margin-bottom:7px}.step p{font-size:13px;color:var(--muted)}
.status-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:18px}.status-card{background:var(--mint-soft);border-radius:16px;padding:28px;border:1px solid #c8e4de}.status-label{color:#287d72;font-weight:800;font-size:13px}.status-card h3{font-size:26px;margin:12px 0 7px}.status-card p{font-size:14px;color:#4d716c}.status-info{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px}.info-row{display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}.info-row:last-child{border:0}.info-row span{color:var(--muted)}
.guide-list{border-top:1px solid var(--ink)}.guide-row{display:grid;grid-template-columns:60px 1fr 170px;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.guide-row .num{font-size:14px;color:var(--orange);font-weight:800}.guide-row h3{font-size:17px}.guide-row p{font-size:13px;color:var(--muted)}.guide-row a{font-size:13px;color:var(--orange-deep);text-align:right}
.compat{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden}.compat-row{display:grid;grid-template-columns:1fr 1fr 1.3fr;padding:16px 22px;border-bottom:1px solid var(--line);font-size:14px}.compat-row:last-child{border:0}.compat-row.head{background:#eee9e1;color:var(--muted);font-size:12px;font-weight:700}
.timeline{border-left:2px solid #d7cfc3;margin-left:10px;padding-left:28px}.timeline-item{position:relative;padding:0 0 27px}.timeline-item:before{content:"";position:absolute;left:-35px;top:7px;width:11px;height:11px;background:var(--mint);border-radius:50%;border:3px solid var(--paper)}.timeline-item time{font-size:12px;color:var(--orange-deep);font-weight:700}.timeline-item h3{font-size:18px;margin:4px 0}.timeline-item p{font-size:13px;color:var(--muted)}
.scene-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.scene-card{border-radius:16px;padding:30px;min-height:200px;background:var(--card);border:1px solid var(--line)}.scene-card.dark{background:var(--dark);color:#fff}.scene-card h3{font-size:23px;margin-bottom:10px}.scene-card p{color:var(--muted);font-size:14px}.scene-card.dark p{color:#c4cfcd}.scene-card:first-child{grid-row:span 2;display:flex;flex-direction:column;justify-content:end}
.faq{max-width:820px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}.faq summary:after{content:"+";color:var(--orange);font-size:22px}.faq details[open] summary:after{content:"−"}.faq details p{color:var(--muted);font-size:14px;padding:12px 28px 0 0}
.news-shell{background:#eee9e1}.news-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}.featured-news,.news-list{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px}.featured-news{min-height:270px;display:flex;flex-direction:column;justify-content:end}.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px;margin-bottom:10px}.news-meta b{color:var(--mint);font-weight:700}.featured-news h3{font-size:25px;line-height:1.4;margin-bottom:10px}.featured-news p,.news-item p{color:var(--muted);font-size:14px}.news-item{padding:15px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.news-item h3{font-size:16px;margin-bottom:3px}.news-item a:hover h3,.featured-news a:hover h3{color:var(--orange-deep)}
.filter-bar{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:20px}.filter-bar span{border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:13px;color:var(--muted)}.filter-bar span.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.help-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start}.help-copy h2{margin-bottom:13px}.help-copy p{color:var(--muted);font-size:15px}.help-form{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{border:1px solid var(--line);background:#fff;padding:11px 12px;border-radius:8px;color:var(--ink)}.field textarea{min-height:92px;resize:vertical}.form-result{font-size:13px;color:var(--mint);grid-column:1/-1;min-height:20px}
.cta-strip{background:var(--orange);padding:35px 0}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.cta-inner h2{font-size:27px}.cta-inner p{font-size:14px;margin-top:4px}.cta-strip .btn-light:hover{background:#ffe1ca}
.site-footer{background:var(--dark);color:#fff;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:42px;border-bottom:1px solid #445052}.footer-brand p{color:#abb8b5;font-size:13px;max-width:260px;margin-top:14px}.footer-title{font-size:13px;color:#f0a16d;font-weight:700;margin-bottom:14px}.footer-links{display:grid;gap:8px}.footer-links a{color:#c4cfcd;font-size:13px}.footer-links a:hover{color:#fff;text-decoration:underline}.copyright{display:flex;justify-content:space-between;gap:20px;color:#899895;font-size:12px;padding-top:20px}.empty-state{padding:35px 0;color:var(--muted);font-size:14px}
@media(max-width:992px){.main-nav{gap:13px}.hero-grid{gap:35px}.entry-grid{grid-template-columns:repeat(2,1fr)}.devices{grid-template-columns:1fr 1fr}.device.large{grid-column:1/-1}.footer-grid{grid-template-columns:1.3fr repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(100% - 32px,600px)}.site-header{height:68px}.brand{min-width:0}.brand small{display:none}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:67px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px 18px;flex-direction:column;align-items:stretch;gap:0}.main-nav.open{display:flex}.main-nav a{padding:12px 8px;border-bottom:1px solid var(--line)}.nav-download{text-align:center;margin-top:10px}.hero{padding:58px 0}.hero-grid{grid-template-columns:1fr}.hero-visual{min-height:315px}.desktop-window{width:82%;right:0}.phone-window{left:4%;height:245px;width:132px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:12px}.download-panel,.status-layout,.scene-grid,.help-layout,.news-layout{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.step{min-height:145px}.guide-row{grid-template-columns:42px 1fr}.guide-row a{grid-column:2;text-align:left}.scene-card:first-child{grid-row:auto;min-height:180px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}}
@media(max-width:520px){.hero h1{font-size:38px}.entry-grid,.devices,.help-form{grid-template-columns:1fr}.entry-card:nth-child(2),.entry-card:nth-child(5){margin-top:0}.device.large,.device.medium,.device.small{grid-column:auto;height:210px}.download-panel{padding:22px}.download-panel h2{font-size:26px}.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line);min-height:auto;padding-left:22px}.compat{overflow-x:auto}.compat-row{min-width:560px}.cta-inner{display:block}.cta-inner .btn{margin-top:18px}.footer-grid{grid-template-columns:1fr}.featured-news h3{font-size:21px}}

/* roulang page: article */
:root{
      --ink:#1e2428;
      --ink-soft:#485258;
      --muted:#788087;
      --paper:#f5f2ec;
      --card:#fffdfa;
      --line:#e5dfd5;
      --orange:#e87532;
      --orange-deep:#c95d22;
      --mint:#46a89a;
      --mint-soft:#e0f1ed;
      --amber-soft:#fff0e5;
      --dark:#202a2d;
      --radius:16px;
      --shadow:0 14px 34px rgba(30,36,40,.07);
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border .2s ease,transform .2s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(232,117,50,.42);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:76px;background:rgba(245,242,236,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:250px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}
    .brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}
    .brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}
    .brand strong{font-size:17px;letter-spacing:.01em}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
    .main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}
    .main-nav .nav-download{background:var(--ink)!important;color:#fff!important;border:0!important;border-radius:9px;padding:10px 16px!important}
    .main-nav .nav-download:hover,.main-nav .nav-download:focus{background:var(--orange)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
    .article-hero{background:var(--dark);color:#fff;padding:66px 0 72px}
    .breadcrumb{display:flex;align-items:center;gap:10px;color:#aebbb9;font-size:13px;margin-bottom:30px;flex-wrap:wrap}
    .breadcrumb a:hover{color:#fff}
    .breadcrumb .current{color:#f1a16e;max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .article-heading{max-width:850px}
    .article-heading .eyebrow{color:#f0a16d;font-size:13px;font-weight:700;letter-spacing:.12em;margin-bottom:15px}
    .article-heading h1{font-size:clamp(34px,5vw,58px);line-height:1.22;letter-spacing:-.04em;margin:0 0 24px}
    .article-lead{font-size:17px;color:#cbd3d1;max-width:760px;margin:0}
    .article-meta{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:28px;color:#aebbb9;font-size:13px}
    .meta-tag{display:inline-flex;padding:5px 11px;border-radius:20px;background:rgba(70,168,154,.18);color:#a9e1d8}
    .article-layout{display:grid;grid-template-columns:minmax(0,780px) 260px;gap:58px;align-items:start;padding:82px 0 94px}
    .article-body{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:clamp(26px,5vw,58px);box-shadow:var(--shadow);overflow:hidden}
    .article-body h2{font-size:29px;line-height:1.35;margin:34px 0 15px}
    .article-body h3{font-size:20px;margin:27px 0 10px}
    .article-body p{color:var(--ink-soft);margin:0 0 20px}
    .article-body ul,.article-body ol{padding-left:24px;color:var(--ink-soft);margin:10px 0 24px}
    .article-body li{margin:8px 0}
    .article-body blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--mint);background:var(--mint-soft);color:#35665f;border-radius:0 10px 10px 0}
    .article-body img{width:100%;height:auto;border-radius:12px;margin:24px 0}
    .article-body table{width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto}
    .article-body th,.article-body td{border:1px solid var(--line);padding:12px 15px;text-align:left;white-space:nowrap}
    .article-body th{background:#eee9e1}
    .article-body a{color:var(--orange-deep);text-decoration:underline;text-underline-offset:3px}
    .article-body a:hover{color:var(--mint)}
    .empty-state{text-align:center;padding:52px 20px;background:var(--amber-soft);border:1px dashed #eab993;border-radius:14px}
    .empty-state strong{display:block;font-size:22px;margin-bottom:8px}
    .empty-state p{font-size:14px;margin-bottom:22px}
    .side-panel{position:sticky;top:105px}
    .toc-card,.side-note{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
    .toc-card h2,.side-note h2{font-size:17px;margin:0 0 14px}
    .toc-card a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-soft)}
    .toc-card a:last-child{border-bottom:0}
    .toc-card a:hover{color:var(--orange-deep);padding-left:4px}
    .side-note{margin-top:16px;background:var(--mint-soft);border-color:#c8e4de}
    .side-note p{font-size:13px;color:#4d716c;margin:0 0 16px}
    .mini-link{color:var(--orange-deep);font-size:13px;font-weight:700}
    .article-tools{display:flex;justify-content:space-between;gap:14px;align-items:center;flex-wrap:wrap;margin-top:24px}
    .tool-text{font-size:13px;color:var(--muted)}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px;transition:.2s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-deep);transform:translateY(-2px)}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--orange);background:var(--amber-soft)}
    .feedback-section{padding:0 0 94px}
    .feedback-box{display:flex;justify-content:space-between;align-items:center;gap:30px;background:var(--mint-soft);border:1px solid #c8e4de;border-radius:17px;padding:30px 34px}
    .feedback-box h2{font-size:24px;margin:0 0 5px}
    .feedback-box p{color:#4d716c;font-size:14px;margin:0}
    .feedback-actions{display:flex;gap:10px;flex-shrink:0}
    .site-footer{background:var(--dark);color:#fff;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;padding-bottom:42px}
    .footer-brand .brand{min-width:0;margin-bottom:17px}
    .footer-brand .brand strong{color:#fff}
    .footer-brand p{color:#aebbb9;max-width:300px;font-size:13px}
    .footer-title{font-size:14px;color:#f0a16d;font-weight:700;margin-bottom:13px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#c5cfcd;font-size:13px}
    .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#8d9b9a;font-size:12px}
    @media(max-width:992px){
      .main-nav{gap:15px}
      .brand{min-width:220px}
      .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:28px}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
    }
    @media(max-width:768px){
      .site-header{height:68px}
      .container{width:min(var(--max),calc(100% - 32px))}
      .header-inner{gap:10px}
      .brand{min-width:0}
      .brand strong{font-size:15px}
      .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px 18px;box-shadow:0 10px 20px rgba(30,36,40,.08);flex-direction:column;align-items:stretch;gap:0}
      .main-nav.is-open{display:flex}
      .main-nav a{padding:12px 8px;border-bottom:1px solid var(--line)}
      .main-nav .nav-download{margin-top:10px;text-align:center}
      .menu-toggle{display:block}
      .article-hero{padding:46px 0 52px}
      .article-layout{display:block;padding:48px 0 62px}
      .side-panel{position:static;margin-top:22px}
      .toc-card a{display:inline-block;margin-right:18px}
      .feedback-section{padding-bottom:62px}
      .feedback-box{display:block;padding:25px}
      .feedback-actions{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .article-heading h1{font-size:34px}
      .article-body{padding:24px 20px}
      .article-body h2{font-size:25px}
      .feedback-actions{display:grid;grid-template-columns:1fr 1fr}
      .feedback-actions .btn{padding:0 12px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-top:5px}
    }

/* roulang page: category1 */
:root{--ink:#1e2428;--ink-soft:#485258;--muted:#788087;--paper:#f5f2ec;--card:#fffdfa;--line:#e5dfd5;--orange:#e87532;--orange-deep:#c95d22;--mint:#46a89a;--mint-soft:#e0f1ed;--amber-soft:#fff0e5;--dark:#202a2d;--radius:16px;--shadow:0 14px 34px rgba(30,36,40,.07);--max:1200px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}a{color:inherit;text-decoration:none;transition:color .2s,background .2s,border .2s,transform .2s}a:hover{color:var(--orange-deep)}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}.container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:76px;background:rgba(245,242,236,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:11px;min-width:250px}.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}.brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}.brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}.brand strong{font-size:17px;letter-spacing:.01em}.brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}.main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}.main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}.nav-download{background:var(--ink)!important;color:#fff!important;border:0!important;border-radius:9px;padding:10px 16px!important}.nav-download:hover,.nav-download:focus{background:var(--orange)!important;transform:translateY(-1px)}.menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
    .page-top{padding:70px 0 54px;background:#ebe6dd;border-bottom:1px solid var(--line)}.crumbs{font-size:13px;color:var(--muted);margin-bottom:22px}.crumbs a{text-decoration:underline;text-underline-offset:3px}.page-top-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:end}.eyebrow,.section-kicker{font-size:12px;color:var(--orange-deep);font-weight:800;letter-spacing:.1em;margin-bottom:10px}.page-top h1{font-size:clamp(38px,5vw,58px);line-height:1.16;letter-spacing:-.04em;margin:0 0 18px}.page-intro{color:var(--ink-soft);max-width:650px;margin:0}.download-stamp{background:var(--dark);color:#fff;border-radius:18px;padding:25px 28px;min-height:155px;position:relative;overflow:hidden}.download-stamp:after{content:"APP";position:absolute;right:-8px;bottom:-30px;font-size:100px;font-weight:800;color:rgba(255,255,255,.06)}.download-stamp strong{display:block;color:#f0a16d;font-size:26px;margin-bottom:4px}.download-stamp span{color:#c8d0cf;font-size:14px}
    .section{padding:84px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}.section h2{font-size:clamp(27px,3vw,37px);line-height:1.25;letter-spacing:-.03em;margin:0}.section-intro{color:var(--muted);max-width:530px;font-size:15px;margin:0}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.topic-card{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:22px;min-height:145px}.topic-card:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-2px)}.topic-no{font-size:13px;color:var(--orange);font-weight:800}.topic-card h3{font-size:18px;margin:15px 0 5px}.topic-card p{font-size:13px;color:var(--muted);margin:0}
    .download-panel{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;background:var(--dark);color:#fff;border-radius:20px;padding:32px}.app-preview{background:#354447;border-radius:15px;padding:24px;min-height:245px;position:relative;overflow:hidden}.app-preview:before{content:"大发电子";display:block;color:#d6e5e1;font-weight:700;font-size:18px;margin-bottom:25px}.screen-line{height:12px;background:#557072;border-radius:6px;margin:13px 0;width:76%}.screen-line.short{width:46%}.screen-button{height:39px;background:var(--orange);border-radius:8px;width:55%;margin-top:24px}.download-copy h2{margin-bottom:13px}.download-copy p{color:#c8d0cf;font-size:15px}.platforms{display:flex;gap:8px;flex-wrap:wrap;margin:21px 0}.platforms span,.badge{font-size:12px;border:1px solid #637274;border-radius:20px;padding:4px 10px;color:#e1e8e6}.download-note{padding:14px 16px;border:1px dashed #647578;border-radius:10px;color:#d3dcda;font-size:13px;margin-bottom:20px}.download-actions{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px;transition:.2s ease}.btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--ink)}.btn-light:hover{background:#e9f4f1;color:var(--ink);transform:translateY(-2px)}.btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}.btn-outline:hover{border-color:var(--orange);background:var(--amber-soft)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);padding-top:25px;gap:25px}.step{position:relative}.step-num{color:var(--orange);font-size:14px;font-weight:800}.step h3{font-size:18px;margin:9px 0 5px}.step p{font-size:13px;color:var(--muted);margin:0}.step:not(:last-child):after{content:"→";position:absolute;right:0;top:0;color:var(--mint);font-size:22px}
    .feature-band{background:var(--mint-soft)}.device-layout{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:stretch}.device-visual{background:#d2e8e2;border-radius:18px;min-height:300px;padding:27px;display:flex;align-items:end;gap:12px}.device{background:#fff;border:5px solid #314044;border-bottom-width:8px;border-radius:12px 12px 5px 5px;position:relative;padding:14px}.device.desktop{width:68%;height:190px}.device.mobile{width:25%;height:225px;border-radius:18px}.device:after{content:"";display:block;height:11px;background:#e7efed;border-radius:4px;margin:13px 0}.device i{display:block;height:8px;background:var(--orange);border-radius:4px;width:52%;margin-top:35px}.device-list{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px 24px}.device-row{display:flex;justify-content:space-between;gap:15px;padding:17px 0;border-bottom:1px solid var(--line);font-size:14px}.device-row:last-child{border:0}.device-row span{color:var(--muted)}.device-row b{font-weight:600}
    .notice{display:grid;grid-template-columns:180px 1fr auto;gap:22px;align-items:center;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:12px;padding:20px 23px}.notice time{font-size:13px;color:var(--orange-deep);font-weight:700}.notice h3{font-size:18px;margin:0 0 4px}.notice p{font-size:13px;color:var(--muted);margin:0}.notice a{font-size:13px;color:var(--orange-deep);font-weight:700}
    .content-list{border-top:1px solid var(--ink)}.content-item{display:grid;grid-template-columns:120px 1fr 110px;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.content-item time{color:var(--muted);font-size:13px}.content-item h3{font-size:17px;margin:0 0 4px}.content-item p{color:var(--muted);font-size:13px;margin:0}.content-item .badge{color:var(--orange-deep);border-color:#efc5aa;justify-self:end}.empty-state{padding:35px;text-align:center;background:var(--card);border:1px dashed var(--line);border-radius:14px;color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}.faq-grid h2{max-width:300px}.faq-list details{background:var(--card);border:1px solid var(--line);border-radius:11px;margin-bottom:10px;padding:0 20px}.faq-list summary{cursor:pointer;padding:18px 0;font-weight:700;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";float:right;color:var(--orange);font-size:20px}.faq-list details[open] summary:after{content:"−"}.faq-answer{color:var(--muted);font-size:14px;padding:0 0 18px}
    .cta-strip{padding:30px 34px;background:var(--orange);border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:20px}.cta-strip h2{font-size:25px;margin:0;color:#fff}.cta-strip p{color:#fff1e7;margin:5px 0 0;font-size:14px}.cta-strip .btn{background:var(--ink);color:#fff}.site-footer{background:var(--dark);color:#fff;padding:55px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand p{color:#aebcba;font-size:13px;max-width:285px;margin-top:18px}.footer-title{font-size:14px;font-weight:700;margin-bottom:15px;color:#f0a16d}.footer-links{display:grid;gap:8px}.footer-links a{font-size:13px;color:#c8d0cf}.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}.copyright{border-top:1px solid #405052;margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#93a3a1;font-size:12px}
    :focus-visible{outline:3px solid rgba(232,117,50,.45);outline-offset:3px}
    @media(max-width:992px){.main-nav{gap:14px}.brand{min-width:220px}.page-top-grid,.download-panel,.device-layout,.faq-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr);row-gap:30px}.step:nth-child(2):after{display:none}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.site-header{height:68px}.main-nav{display:none;position:absolute;left:16px;right:16px;top:62px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.main-nav.open{display:flex}.main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}.main-nav .nav-download{margin:10px 0;text-align:center;border:0}.menu-toggle{display:block}.header-inner{gap:10px}.brand{min-width:0}.brand small{display:none}.page-top{padding:48px 0 40px}.section{padding:60px 0}.section-head{display:block}.section-intro{margin-top:12px}.notice{grid-template-columns:1fr}.notice a{justify-self:start}.content-item{grid-template-columns:1fr;gap:4px}.content-item .badge{justify-self:start;margin-top:8px}.cta-strip{display:block}.cta-strip .btn{margin-top:18px}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
    @media(max-width:520px){.topic-grid,.steps{grid-template-columns:1fr}.download-panel{padding:20px}.device-visual{min-height:230px;padding:18px}.device.desktop{height:145px}.device.mobile{height:175px}.step:not(:last-child):after{display:none}.footer-grid{grid-template-columns:1fr}.page-top h1{font-size:38px}.app-preview{min-height:190px}}

/* roulang page: category3 */
:root{
      --ink:#1e2428;--ink-soft:#485258;--muted:#788087;--paper:#f5f2ec;
      --card:#fffdfa;--line:#e5dfd5;--orange:#e87532;--orange-deep:#c95d22;
      --mint:#46a89a;--mint-soft:#e0f1ed;--amber-soft:#fff0e5;--dark:#202a2d;
      --radius:16px;--shadow:0 14px 34px rgba(30,36,40,.07);--max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border .2s ease,transform .2s ease}
    a:hover{color:var(--orange-deep)}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(232,117,50,.38);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:76px;background:rgba(245,242,236,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:250px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}
    .brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}
    .brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}
    .brand strong{font-size:17px;letter-spacing:.01em}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
    .main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}
    .main-nav .nav-download{background:var(--ink);color:#fff;border:0;border-radius:9px;padding:10px 16px}
    .main-nav .nav-download:hover,.main-nav .nav-download:focus{background:var(--orange);color:#fff;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
    main{overflow:hidden}
    .category-head{padding:68px 0 54px;background:var(--dark);color:#fff}
    .crumbs{font-size:13px;color:#aebbb9;margin-bottom:30px}
    .crumbs a{color:#d8e2df}
    .crumbs a:hover{text-decoration:underline;color:#fff}
    .category-head-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:60px;align-items:end}
    .eyebrow,.section-kicker{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:.12em;margin-bottom:12px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,60px);line-height:1.15;letter-spacing:-.04em;margin-bottom:20px}
    .head-copy{color:#c9d2d0;max-width:650px;font-size:17px;margin-bottom:0}
    .head-note{border-left:3px solid var(--mint);padding:12px 0 12px 22px;color:#dce7e4}
    .head-note strong{display:block;font-size:25px;color:#fff;margin-bottom:4px}
    .section{padding:82px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-.03em;margin-bottom:0}
    .section-intro{color:var(--muted);max-width:540px;font-size:15px}
    .index-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .index-item{background:var(--card);border:1px solid var(--line);padding:22px;border-radius:13px;min-height:148px}
    .index-item:nth-child(2){margin-top:18px}.index-item:nth-child(4){margin-top:-12px}
    .index-no{color:var(--orange);font-weight:800;font-size:13px;display:block;margin-bottom:18px}
    .index-item h3{font-size:18px;margin-bottom:6px}
    .index-item p{font-size:13px;color:var(--muted);margin-bottom:0}
    .content-layout{display:grid;grid-template-columns:1.45fr .55fr;gap:28px;align-items:start}
    .post-list{border-top:1px solid var(--ink)}
    .post-item{display:grid;grid-template-columns:92px 1fr 92px;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
    .post-date{font-size:12px;color:var(--orange-deep);font-weight:700}
    .post-item h3{font-size:18px;margin-bottom:5px}
    .post-item p{font-size:13px;color:var(--muted);margin-bottom:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .post-arrow{text-align:right;color:var(--orange-deep);font-size:13px;font-weight:700}
    .post-arrow:hover{text-decoration:underline}
    .feature-card{background:var(--mint-soft);border:1px solid #c8e4de;border-radius:var(--radius);padding:28px}
    .feature-card .badge,.topic-tag{display:inline-block;border-radius:20px;padding:4px 10px;font-size:12px;color:var(--mint);background:#fff;border:1px solid #b9ddd6}
    .feature-card h3{font-size:25px;line-height:1.35;margin:18px 0 10px}
    .feature-card p{font-size:14px;color:#4d716c;margin-bottom:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px;transition:.2s ease}
    .btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px)}
    .btn-outline{border:1px solid var(--line);color:var(--ink);background:transparent}.btn-outline:hover{border-color:var(--orange);background:var(--amber-soft)}
    .more-link{display:flex;justify-content:flex-end;margin-top:22px;color:var(--orange-deep);font-size:14px;font-weight:700}
    .filter-bar{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:28px}
    .filter-bar button{background:var(--card);color:var(--ink-soft);border:1px solid var(--line);border-radius:22px;padding:8px 15px;font-size:13px}
    .filter-bar button:hover,.filter-bar button.active{background:var(--orange);border-color:var(--orange);color:#fff}
    .service-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px}
    .service-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:32px}
    .service-panel h3{font-size:27px;margin:12px 0 9px}
    .service-panel p{color:#c7d1cf;font-size:14px}
    .service-status{display:flex;align-items:center;gap:9px;color:#aee0d5;font-size:13px;margin-bottom:22px}
    .service-status i{width:9px;height:9px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 5px rgba(70,168,154,.14)}
    .service-list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px}
    .service-row{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:17px;padding:19px 0;border-bottom:1px solid var(--line)}
    .service-row:last-child{border-bottom:0}
    .service-icon{width:36px;height:36px;border-radius:10px;background:var(--amber-soft);color:var(--orange-deep);display:grid;place-items:center;font-weight:800}
    .service-row h3{font-size:17px;margin-bottom:3px}.service-row p{font-size:13px;color:var(--muted);margin-bottom:0}
    .service-row a{color:var(--orange-deep);font-size:13px;font-weight:700}
    .scene-section{background:#e9e4db}
    .scene-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
    .scene-card{background:var(--card);border-radius:var(--radius);padding:27px;min-height:190px;border:1px solid var(--line)}
    .scene-card:first-child{background:var(--amber-soft);transform:translateY(16px)}
    .scene-card:last-child{background:var(--mint-soft);transform:translateY(-10px)}
    .scene-card .scene-label{font-size:12px;color:var(--orange-deep);font-weight:800}
    .scene-card h3{font-size:22px;margin:17px 0 8px}.scene-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro h2{margin-bottom:15px}.faq-intro p{color:var(--muted);font-size:15px}
    .faq-list details{border-top:1px solid var(--line);padding:19px 0}
    .faq-list details:last-child{border-bottom:1px solid var(--line)}
    .faq-list summary{cursor:pointer;font-size:17px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
    .faq-list details[open] summary:after{content:"−"}
    .faq-list p{color:var(--muted);font-size:14px;margin:13px 28px 0 0}
    .cta-section{padding:42px 0 92px}
    .cta-box{background:var(--orange);border-radius:var(--radius);padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:25px;color:#fff}
    .cta-box h2{font-size:28px;margin-bottom:7px}.cta-box p{margin-bottom:0;color:#fff0e5;font-size:14px}
    .cta-box .btn{background:var(--ink);color:#fff}.cta-box .btn:hover{background:#fff;color:var(--ink)}
    .site-footer{background:var(--dark);color:#fff;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px}
    .footer-brand .brand{min-width:0;margin-bottom:15px}.footer-brand .brand strong{color:#fff}
    .footer-brand p{color:#aebbb9;font-size:13px;max-width:310px}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:15px;color:#fff}
    .footer-links{display:grid;gap:9px}.footer-links a{font-size:13px;color:#aebbb9}.footer-links a:hover{color:#f0a16d;text-decoration:underline}
    .copyright{border-top:1px solid #3b4648;margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#91a09e;font-size:12px}
    @media(max-width:992px){
      .main-nav{gap:14px}.main-nav a{font-size:13px}
      .category-head-grid,.content-layout,.service-layout,.faq-grid{grid-template-columns:1fr}
      .index-grid{grid-template-columns:repeat(2,1fr)}
      .scene-grid{grid-template-columns:1fr 1fr}
      .scene-card:first-child,.scene-card:last-child{transform:none}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .site-header{height:68px}.brand{min-width:0}.brand strong{font-size:15px}
      .menu-toggle{display:block}.main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
      .main-nav.open{display:flex}.main-nav a{padding:13px 8px;border-bottom:1px solid var(--line)}.main-nav .nav-download{text-align:center;margin-top:10px;border:0}
      .category-head{padding:48px 0 42px}.section{padding:60px 0}
      .index-grid,.scene-grid{grid-template-columns:1fr}
      .index-item:nth-child(2),.index-item:nth-child(4){margin-top:0}
      .post-item{grid-template-columns:75px 1fr}.post-arrow{display:none}
      .cta-box{align-items:flex-start;flex-direction:column;padding:28px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
      .copyright{flex-direction:column}
    }
    @media(max-width:520px){
      h1{font-size:38px}.category-head-grid{gap:28px}.section-head{display:block}.section-intro{margin-top:12px}
      .service-panel{padding:25px}.service-list{padding:4px 16px}.service-row{grid-template-columns:36px 1fr;gap:12px}.service-row a{grid-column:2}
      .faq-grid{gap:35px}.footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category2 */
:root{
      --ink:#1e2428;
      --ink-soft:#485258;
      --muted:#788087;
      --paper:#f5f2ec;
      --card:#fffdfa;
      --line:#e5dfd5;
      --orange:#e87532;
      --orange-deep:#c95d22;
      --mint:#46a89a;
      --mint-soft:#e0f1ed;
      --amber-soft:#fff0e5;
      --dark:#202a2d;
      --radius:16px;
      --shadow:0 14px 34px rgba(30,36,40,.07);
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border .2s ease,transform .2s ease}
    a:hover{color:var(--orange-deep)}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:76px;background:rgba(245,242,236,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:250px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}
    .brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}
    .brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}
    .brand strong{font-size:17px;letter-spacing:.01em}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
    .main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}
    .main-nav .nav-download{background:var(--ink);color:#fff;border:0;border-radius:9px;padding:10px 16px}
    .main-nav .nav-download:hover,.main-nav .nav-download:focus{background:var(--orange);color:#fff;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
    .page-head{padding:76px 0 62px;background:var(--dark);color:#fff}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:#aebbb9;font-size:13px;margin-bottom:25px}
    .breadcrumb a:hover{color:#fff}
    .breadcrumb .current{color:#f0a16d}
    .head-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{font-size:12px;color:var(--orange-deep);font-weight:800;letter-spacing:.1em;margin-bottom:9px}
    .page-head .eyebrow{color:#f0a16d}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin-bottom:20px}
    .head-copy{font-size:17px;color:#c8d0cf;max-width:650px;margin-bottom:0}
    .head-note{border-left:3px solid var(--mint);padding:18px 0 18px 24px;color:#d9e3e1}
    .head-note strong{display:block;font-size:22px;color:#fff;margin-bottom:6px}
    .head-note span{font-size:14px;color:#b6c4c1}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-.03em;margin-bottom:0}
    .section-intro{color:var(--muted);max-width:560px;font-size:15px;margin-bottom:0}
    .theme-index{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .index-item{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:20px;min-height:132px}
    .index-item:nth-child(2){margin-top:18px}
    .index-item:nth-child(4){margin-top:-10px}
    .index-no{color:var(--orange);font-weight:800;font-size:13px}
    .index-item h3{font-size:18px;margin:12px 0 5px}
    .index-item p{color:var(--muted);font-size:13px;margin-bottom:0}
    .device-section{background:#e9e4db}
    .device-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:stretch}
    .device-board{background:var(--dark);border-radius:var(--radius);padding:28px;color:#fff;min-height:330px;position:relative;overflow:hidden}
    .device-board:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(70,168,154,.35);border-radius:50%;right:-65px;bottom:-80px}
    .device-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #435154;padding-bottom:17px}
    .device-top span{font-size:12px;color:#b8c6c3}
    .device-top b{font-size:15px}
    .desktop-window{height:175px;background:#f7f5ef;border-radius:10px;margin-top:24px;padding:15px;color:var(--ink)}
    .window-bar{display:flex;gap:5px;margin-bottom:16px}
    .window-bar i{width:7px;height:7px;border-radius:50%;background:var(--orange);display:block}
    .window-bar i:nth-child(2){background:#d5b18e}.window-bar i:nth-child(3){background:var(--mint)}
    .window-line{height:10px;background:#dcebe7;border-radius:4px;width:72%;margin-bottom:12px}
    .window-line.short{width:42%;background:#f5d2bb}
    .device-labels{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}
    .device-labels span{font-size:12px;border:1px solid #667678;border-radius:20px;padding:4px 10px;color:#dce7e4}
    .device-list{display:flex;flex-direction:column;gap:12px}
    .device-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;gap:17px;align-items:flex-start}
    .device-icon{width:42px;height:42px;border-radius:12px;background:var(--mint-soft);color:var(--mint);display:grid;place-items:center;font-weight:800;flex:0 0 auto}
    .device-card h3{font-size:19px;margin-bottom:4px}
    .device-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:27px;min-height:220px}
    .feature-card:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
    .feature-card .symbol{color:var(--orange);font-size:28px;line-height:1;margin-bottom:28px}
    .feature-card h3{font-size:21px;margin-bottom:9px}
    .feature-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .scenes{display:grid;grid-template-columns:1fr 1.35fr;gap:18px}
    .scene-list{border-top:1px solid var(--ink)}
    .scene-row{display:flex;justify-content:space-between;gap:18px;align-items:center;border-bottom:1px solid var(--line);padding:17px 0}
    .scene-row b{font-size:16px}
    .scene-row span{font-size:13px;color:var(--muted);text-align:right}
    .scene-highlight{background:var(--mint-soft);border-radius:var(--radius);padding:32px;min-height:280px;display:flex;flex-direction:column;justify-content:space-between}
    .scene-highlight h3{font-size:28px;max-width:360px}
    .scene-highlight p{color:#4d716c;max-width:470px;font-size:14px}
    .tag{display:inline-flex;align-items:center;border-radius:20px;padding:5px 11px;font-size:12px;font-weight:700;background:var(--amber-soft);color:var(--orange-deep)}
    .compatibility{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .compat-row{display:grid;grid-template-columns:1fr 1fr 1.4fr;padding:17px 22px;border-bottom:1px solid var(--line);font-size:14px}
    .compat-row:last-child{border:0}
    .compat-row.head{background:#eee9e1;color:var(--muted);font-size:12px;font-weight:700}
    .compat-row span:last-child{color:var(--muted)}
    .guide-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
    .guide-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:30px}
    .guide-panel h3{font-size:26px;margin-bottom:12px}
    .guide-panel p{color:#c7d1cf;font-size:14px;margin-bottom:22px}
    .guide-panel .btn{background:var(--orange);color:#fff}
    .guide-list{border-top:1px solid var(--ink)}
    .guide-row{display:grid;grid-template-columns:50px 1fr 110px;gap:18px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}
    .guide-row .num{font-size:14px;color:var(--orange);font-weight:800}
    .guide-row h3{font-size:17px;margin-bottom:3px}
    .guide-row p{font-size:13px;color:var(--muted);margin-bottom:0}
    .guide-row a{font-size:13px;color:var(--orange-deep);text-align:right}
    .faq-section{background:#eee9e1}
    .faq-list{max-width:900px;margin:auto}
    .faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
    .faq-question{width:100%;background:transparent;color:var(--ink);padding:19px 22px;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:700}
    .faq-question:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
    .faq-item.open .faq-question:after{content:"−"}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .bottom-cta{padding:54px 0}
    .cta-box{background:var(--dark);border-radius:var(--radius);padding:35px 40px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box h2{font-size:30px;margin-bottom:8px}
    .cta-box p{color:#c7d1cf;margin-bottom:0;font-size:14px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--ink)}
    .btn-light:hover{background:#e9f4f1;color:var(--ink);transform:translateY(-2px)}
    .site-footer{background:var(--dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand .brand{min-width:0;margin-bottom:17px}
    .footer-brand .brand strong{color:#fff}
    .footer-brand p{font-size:13px;color:#aebbb9;max-width:300px}
    .footer-title{font-size:14px;font-weight:700;margin:7px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a{font-size:13px;color:#aebbb9}
    .footer-links a:hover{color:#f0a16d;text-decoration:underline;text-underline-offset:4px}
    .copyright{border-top:1px solid #3d494b;padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#899795;font-size:12px}
    :focus-visible{outline:3px solid rgba(232,117,50,.45);outline-offset:3px}
    @media(max-width:992px){
      .main-nav{gap:13px}
      .brand{min-width:215px}
      .theme-index,.feature-grid{grid-template-columns:repeat(2,1fr)}
      .head-grid,.device-grid,.guide-layout,.scenes{grid-template-columns:1fr}
      .device-board{min-height:280px}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .site-header{height:68px}
      .header-inner{gap:10px}
      .brand{min-width:0}
      .brand strong{font-size:15px}
      .brand small{font-size:10px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px 18px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
      .main-nav.show{display:flex}
      .main-nav a{padding:12px 8px;border-bottom:1px solid var(--line)}
      .main-nav .nav-download{text-align:center;margin-top:10px}
      .page-head{padding:52px 0 48px}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-intro{margin-top:12px}
      .theme-index,.feature-grid{grid-template-columns:1fr}
      .index-item:nth-child(2),.index-item:nth-child(4){margin-top:0}
      .compat-row{grid-template-columns:1fr;gap:5px;padding:16px}
      .compat-row.head{display:none}
      .compat-row span:before{content:"";display:inline-block;width:78px;color:var(--muted)}
      .compat-row span:nth-child(1):before{content:"设备："}
      .compat-row span:nth-child(2):before{content:"访问："}
      .compat-row span:nth-child(3):before{content:"说明："}
      .guide-row{grid-template-columns:38px 1fr}
      .guide-row a{grid-column:2;text-align:left}
      .cta-box{display:block;padding:28px 24px}
      .cta-box .btn{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:5px}
    }
    @media(max-width:480px){
      h1{font-size:38px}
      .head-copy{font-size:15px}
      .device-board{padding:21px}
      .desktop-window{height:145px}
      .scene-highlight{padding:25px}
      .scene-highlight h3{font-size:24px}
      .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category4 */
:root{
      --ink:#1e2428;
      --ink-soft:#485258;
      --muted:#788087;
      --paper:#f5f2ec;
      --card:#fffdfa;
      --line:#e5dfd5;
      --orange:#e87532;
      --orange-deep:#c95d22;
      --mint:#46a89a;
      --mint-soft:#e0f1ed;
      --amber-soft:#fff0e5;
      --dark:#202a2d;
      --radius:16px;
      --shadow:0 14px 34px rgba(30,36,40,.07);
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border .2s ease,transform .2s ease}
    a:hover{color:var(--orange-deep)}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(70,168,154,.55);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:76px;background:rgba(245,242,236,.97);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:250px}
    .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--orange);position:relative;display:grid;place-items:center}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--ink);border-radius:3px}
    .brand-mark:before{width:15px;height:5px;transform:rotate(-45deg)}
    .brand-mark:after{width:5px;height:15px;transform:rotate(-45deg)}
    .brand strong{font-size:17px;letter-spacing:.01em}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .main-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
    .main-nav a{font-size:14px;color:var(--ink-soft);padding:25px 0 21px;border-bottom:2px solid transparent;white-space:nowrap}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--orange-deep);border-bottom-color:var(--orange)}
    .main-nav .nav-download{background:var(--ink);color:#fff;border:0;border-radius:9px;padding:10px 16px}
    .main-nav .nav-download:hover,.main-nav .nav-download:focus{background:var(--orange);color:#fff;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:25px;padding:7px}
    .page-intro{padding:68px 0 48px;border-bottom:1px solid var(--line)}
    .intro-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:60px;align-items:end}
    .eyebrow,.section-kicker{font-size:12px;color:var(--orange-deep);font-weight:800;letter-spacing:.1em;margin-bottom:10px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin-bottom:18px}
    h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-.03em;margin-bottom:12px}
    h3{font-size:19px;line-height:1.4;margin-bottom:8px}
    .intro-copy{color:var(--ink-soft);max-width:680px;font-size:16px}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end;color:var(--muted);font-size:13px}
    .breadcrumb a{text-decoration:underline;text-underline-offset:4px}
    .section{padding:76px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section-intro{color:var(--muted);max-width:560px;font-size:15px}
    .topic-index{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .topic-item{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:22px;min-height:142px}
    .topic-item:nth-child(2){margin-top:18px}
    .topic-item:nth-child(4){margin-top:-10px}
    .topic-num{color:var(--orange);font-size:13px;font-weight:800;display:block;margin-bottom:20px}
    .topic-item p{color:var(--muted);font-size:13px;margin-bottom:0}
    .news-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:24px;align-items:start}
    .featured-news{background:var(--dark);color:#fff;border-radius:var(--radius);padding:30px;min-height:310px;position:relative;overflow:hidden}
    .featured-news:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(70,168,154,.45);border-radius:50%;right:-65px;bottom:-65px}
    .featured-news .badge{display:inline-block;color:#bde4dc;border-color:#4f7772;margin-bottom:48px}
    .featured-news h3{font-size:26px;max-width:420px}
    .featured-news p{color:#c8d0cf;font-size:14px;max-width:420px}
    .featured-news .news-meta{color:#f0a16d}
    .news-list{border-top:1px solid var(--ink)}
    .news-item{display:grid;grid-template-columns:92px 1fr 85px;gap:20px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}
    .news-item time{color:var(--orange-deep);font-size:12px;font-weight:800}
    .news-item h3{font-size:17px;margin-bottom:4px}
    .news-item p{color:var(--muted);font-size:13px;margin-bottom:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .news-item .read-link{font-size:13px;color:var(--orange-deep);text-align:right}
    .empty-state{background:var(--card);border:1px dashed #cfc6b9;border-radius:var(--radius);padding:45px 25px;text-align:center;color:var(--muted)}
    .empty-icon{width:42px;height:42px;border-radius:13px;background:var(--mint-soft);color:var(--mint);display:grid;place-items:center;font-weight:800;margin:0 auto 13px}
    .filter-bar{display:flex;gap:10px;flex-wrap:wrap;padding:14px;background:#ebe6de;border-radius:12px;margin-bottom:28px}
    .filter-bar button{background:var(--card);border:1px solid var(--line);color:var(--ink-soft);border-radius:8px;padding:9px 16px;font-size:13px}
    .filter-bar button:hover,.filter-bar button.active{background:var(--orange);color:#fff;border-color:var(--orange)}
    .update-band{display:flex;justify-content:space-between;align-items:center;gap:25px;background:var(--amber-soft);border:1px solid #f2cdb5;border-radius:14px;padding:23px 27px}
    .update-band strong{display:block;font-size:18px;margin-bottom:4px}
    .update-band span{color:var(--muted);font-size:13px}
    .text-link{color:var(--orange-deep);font-weight:700;font-size:14px;white-space:nowrap}
    .text-link:hover{text-decoration:underline;text-underline-offset:4px}
    .device-panel{background:#e9e4db;border-radius:var(--radius);padding:34px}
    .device-panel-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:35px;align-items:center}
    .device-art{min-height:230px;position:relative;background:var(--dark);border-radius:13px;padding:20px 22px;box-shadow:var(--shadow)}
    .device-top{height:12px;display:flex;gap:5px;margin-bottom:17px}
    .device-top i{width:7px;height:7px;border-radius:50%;background:#e87532}
    .device-top i:nth-child(2){background:#d8a85d}.device-top i:nth-child(3){background:#46a89a}
    .device-lines{display:grid;grid-template-columns:1.2fr .8fr;gap:12px}
    .device-lines span{display:block;height:37px;background:#344548;border-radius:7px;border-left:3px solid var(--mint)}
    .device-lines span:nth-child(2){height:85px;background:#3b5052}
    .device-lines span:nth-child(3){height:60px;background:#303e41;border-left-color:var(--orange)}
    .device-notes{display:grid;gap:15px}
    .device-note{display:flex;gap:13px;align-items:flex-start}
    .device-note b{width:29px;height:29px;display:grid;place-items:center;border-radius:8px;background:var(--mint-soft);color:var(--mint);font-size:13px}
    .device-note p{margin:0;color:var(--ink-soft);font-size:14px}
    .faq-list{border-top:1px solid var(--ink)}
    .faq-list details{border-bottom:1px solid var(--line);padding:19px 0}
    .faq-list summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"+";color:var(--orange);font-size:22px;font-weight:400;line-height:1}
    .faq-list details[open] summary:after{content:"−"}
    .faq-list details p{color:var(--muted);font-size:14px;max-width:850px;margin:13px 0 0}
    .bottom-cta{background:var(--dark);color:#fff;border-radius:var(--radius);padding:35px 40px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .bottom-cta h2{font-size:28px;margin-bottom:6px}
    .bottom-cta p{color:#c8d0cf;margin-bottom:0;font-size:14px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;font-size:14px}
    .btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--ink)}.btn-light:hover{background:var(--mint-soft);color:var(--ink);transform:translateY(-2px)}
    .site-footer{background:var(--dark);color:#fff;padding:58px 0 22px;border-top:1px solid #303c3e}
    .footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:40px;padding-bottom:45px}
    .footer-brand .brand{min-width:0;margin-bottom:16px}.footer-brand .brand strong{color:#fff}.footer-brand p{color:#aebbb9;font-size:13px;max-width:290px}
    .footer-title{font-size:14px;font-weight:700;margin:8px 0 16px;color:#fff}
    .footer-links{display:grid;gap:8px}.footer-links a{color:#aebbb9;font-size:13px}.footer-links a:hover{color:#f0a16d;text-decoration:underline;text-underline-offset:3px}
    .copyright{border-top:1px solid #3a4648;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8e9b9a;font-size:12px}
    @media(max-width:992px){
      .main-nav{gap:14px}.main-nav a{font-size:13px}
      .intro-layout,.news-layout,.device-panel-grid{grid-template-columns:1fr;gap:25px}
      .breadcrumb{justify-content:flex-start}
      .topic-index{grid-template-columns:repeat(2,1fr)}
      .device-panel-grid{align-items:start}
      .footer-grid{grid-template-columns:1.4fr repeat(3,1fr);gap:22px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .site-header{height:68px}.header-inner{gap:10px}.brand{min-width:0}.brand strong{font-size:15px}
      .menu-toggle{display:block}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:8px 16px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
      .main-nav.open{display:flex}.main-nav a{padding:13px 8px;border-bottom:1px solid var(--line)}.main-nav .nav-download{text-align:center;margin-top:10px;border:0}
      .page-intro{padding:48px 0 35px}.section{padding:56px 0}.section-head{display:block;margin-bottom:22px}
      .section-intro{margin-top:12px}.news-item{grid-template-columns:1fr auto;gap:5px 14px}.news-item time{grid-column:1}.news-item .read-link{grid-column:2;grid-row:1 / span 2}.news-item p{grid-column:1}
      .update-band,.bottom-cta{display:block;padding:25px}.update-band .text-link,.bottom-cta .btn{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1 / -1}.copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      h1{font-size:38px}.topic-index{grid-template-columns:1fr}.topic-item:nth-child(2),.topic-item:nth-child(4){margin-top:0}
      .device-panel{padding:20px}.device-art{min-height:190px;padding:15px}.featured-news{min-height:270px;padding:24px}
      .featured-news .badge{margin-bottom:30px}.featured-news h3{font-size:22px}
      .filter-bar{display:grid;grid-template-columns:1fr 1fr}.filter-bar button{padding:10px 8px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
    }