/* roulang page: index */
:root{
  --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
  --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
  --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans 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:.22s ease}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{background:var(--coal);color:#fff;position:relative;z-index:10}
.header-inner{height:78px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:12px;min-width:290px}
.logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
.logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
.logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
.main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
.main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff}
.main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
.header-tools{display:flex;align-items:center;gap:12px}
.search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
.search-trigger:hover{border-color:var(--orange);color:#fff}
.btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
.btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
.btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
.menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
.hero{background:var(--coal);color:#fff;padding:78px 0 82px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;width:410px;height:410px;border:1px solid #484942;border-radius:50%;right:7%;top:-190px}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:65px;align-items:center;position:relative}
.eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:16px}
.hero h1{font-size:clamp(34px,4.4vw,58px);line-height:1.18;letter-spacing:-1.8px;max-width:680px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero-copy{color:#c8c7c0;max-width:600px;margin:23px 0 28px;font-size:17px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn-secondary{border-color:#777871;color:#fff}
.hero .btn-secondary:hover{color:var(--ink)}
.hero-art{min-height:360px;position:relative;display:flex;align-items:center;justify-content:center}
.screen{width:360px;height:238px;background:#2b2d28;border:9px solid #42443c;border-radius:18px;box-shadow:24px 24px 0 #10110f;transform:rotate(-5deg);padding:20px;position:relative}
.screen:before{content:"RESIDENT PLAY";font-weight:900;color:#fff;font-size:18px;letter-spacing:2px}
.screen-line{height:9px;background:var(--orange);width:72%;margin-top:28px}
.screen-line:nth-child(3){width:45%;background:var(--lime);margin-top:14px}
.screen-panel{height:57px;border:1px solid #686a60;margin-top:23px;display:flex;align-items:center;justify-content:space-between;padding:12px;color:#d6d6ce;font-size:12px}
.controller{position:absolute;bottom:11px;right:3%;width:190px;height:74px;background:#d9d6cb;border-radius:42px 42px 30px 30px;transform:rotate(13deg);box-shadow:0 12px 0 rgba(0,0,0,.25)}
.controller:before,.controller:after{content:"";position:absolute;border-radius:50%;background:#252621;width:17px;height:17px;top:25px}
.controller:before{left:38px}.controller:after{right:38px}
.version-tag{position:absolute;top:25px;right:1%;background:var(--lime);color:var(--ink);padding:8px 12px;border-radius:5px;font-weight:800;font-size:12px;transform:rotate(6deg)}
.quick{background:var(--white);border-bottom:1px solid var(--line)}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.quick-item{padding:24px 22px;border-right:1px solid var(--line);display:flex;gap:14px;align-items:center}
.quick-item:first-child{border-left:1px solid var(--line)}
.quick-item:hover{background:#fff3e9}
.quick-icon{width:38px;height:38px;border-radius:10px;background:var(--soft);display:grid;place-items:center;font-weight:900;color:var(--orange)}
.quick-item:nth-child(2) .quick-icon{color:#778b19}.quick-item:nth-child(3) .quick-icon{color:#925229}.quick-item:nth-child(4) .quick-icon{color:#515c54}
.quick-item strong{display:block;font-size:15px}.quick-item span{font-size:12px;color:var(--muted)}
.section{padding:82px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:32px}
.kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.8px}
.section h2{font-size:34px;line-height:1.25;margin-top:5px}.section-head p{color:var(--muted);max-width:480px}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feature-main{background:#e7e1d6;border-radius:20px;min-height:330px;padding:35px;position:relative;overflow:hidden}
.feature-main:after{content:"PLAY";position:absolute;right:-16px;bottom:-26px;font-weight:900;font-size:110px;color:rgba(231,93,47,.12);letter-spacing:-5px}
.feature-main h3{font-size:28px;max-width:340px;line-height:1.35;margin:12px 0}
.feature-main p{max-width:430px;color:#5e5c55}
.info-panel{background:var(--white);border:1px solid var(--line);border-radius:20px;padding:31px}
.info-panel h3{font-size:22px;margin-bottom:20px}
.info-list{display:grid;grid-template-columns:1fr 1fr;gap:0}
.info-list div{border-top:1px solid var(--line);padding:15px 0}.info-list dt{font-size:12px;color:var(--muted)}.info-list dd{font-weight:700;margin-top:2px}
.download{background:var(--coal);color:#fff;border-radius:22px;padding:50px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;position:relative;overflow:hidden}
.download:after{content:"APP";position:absolute;right:15px;bottom:-35px;font-size:170px;font-weight:900;color:rgba(255,255,255,.04)}
.download h2{font-size:35px;line-height:1.3}.download p{color:#c6c6be;margin:15px 0 24px;max-width:580px}
.download-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}.badge{display:inline-flex;padding:5px 10px;border-radius:5px;background:#353731;color:#e5e5dc;font-size:12px}.badge.lime{background:var(--lime);color:var(--ink)}
.device{justify-self:end;width:210px;height:265px;border:8px solid #4b4d44;border-radius:26px;background:#292b27;padding:25px 14px;box-shadow:16px 16px 0 rgba(0,0,0,.25);transform:rotate(5deg);position:relative;z-index:1}
.device:before{content:"Resident Play";display:block;color:#fff;font-size:14px;font-weight:800;border-bottom:2px solid var(--orange);padding-bottom:17px}.device-bar{height:11px;background:var(--lime);margin-top:20px}.device-card{height:70px;border:1px solid #666;margin-top:18px}
.news-area{display:grid;grid-template-columns:280px 1fr;gap:65px}
.news-intro h2{font-size:34px;line-height:1.3}.news-intro p{color:var(--muted);margin:14px 0 22px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:105px 1fr auto;gap:20px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}
.news-date{font-size:13px;color:var(--muted)}.news-title{font-size:17px;font-weight:800}.news-excerpt{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-item:hover .news-title{color:var(--orange)}
.news-arrow{font-size:21px;color:var(--orange)}
.empty{padding:28px;border:1px dashed #c8c3b8;border-radius:12px;color:var(--muted);text-align:center}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:0 20px}.faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between}.faq-item summary:after{content:"+";color:var(--orange);font-size:22px}.faq-item[open] summary{color:var(--orange)}.faq-item[open] summary:after{content:"−"}.faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px}
.cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:27px}.cta p{color:#ffe7dd;margin-top:5px}.cta .btn{background:#fff;color:var(--orange-dark)}
.site-footer{background:var(--coal);color:#fff;padding:55px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}.footer-brand p{color:#aaa9a1;max-width:320px;margin-top:15px;font-size:14px}.footer-title{font-weight:800;margin-bottom:15px}.footer-links{list-style:none}.footer-links li{margin:9px 0;color:#aaa9a1;font-size:14px}.footer-links a:hover{color:var(--lime)}.footer-bottom{border-top:1px solid #3a3b35;padding-top:19px;color:#87877e;font-size:12px;display:flex;justify-content:space-between;gap:15px}.search-box{display:none;background:var(--white);padding:18px;border-bottom:1px solid var(--line)}.search-box form{display:flex;gap:8px}.search-box input{flex:1;border:1px solid var(--line);border-radius:8px;padding:10px 13px;background:#fff}.search-box input:focus{border-color:var(--orange)}
@media(max-width:1024px){.header-inner{gap:18px}.logo{min-width:240px}.main-nav{gap:15px}.hero-grid{gap:30px}.download{padding:38px}.news-area{gap:35px}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--max))}.header-inner{height:68px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;height:auto;background:var(--coal-2);padding:10px 16px;flex-direction:column;gap:0}.main-nav.open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3b3c36}.main-nav a.active:after{left:auto;width:35px;bottom:14px}.header-tools .search-trigger{display:none}.menu-toggle{display:block}.header-tools .btn{min-height:40px;padding:8px 11px;font-size:13px}.hero{padding:52px 0 58px}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:39px}.hero-art{min-height:290px}.quick-grid{grid-template-columns:1fr 1fr}.quick-item{padding:18px 14px}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(n+3){border-top:1px solid var(--line)}.feature,.download,.news-area{grid-template-columns:1fr}.section{padding:55px 0}.download{padding:32px}.device{justify-self:center}.news-intro{display:flex;justify-content:space-between;align-items:end;gap:15px}.news-intro p{max-width:370px}.news-item{grid-template-columns:85px 1fr auto}.faq-grid{grid-template-columns:1fr}.cta{padding:30px;align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:520px){body{font-size:15px}.container{width:calc(100% - 28px)}.logo-mark{width:30px;height:30px;font-size:15px}.logo small{font-size:10px}.logo strong{font-size:12px}.hero h1{font-size:31px;letter-spacing:-.8px}.hero-copy{font-size:15px}.hero-actions,.hero-actions .btn{width:100%}.screen{width:285px;height:190px}.controller{width:145px;height:57px}.version-tag{right:0}.section h2,.news-intro h2,.download h2{font-size:28px}.section-head{display:block}.section-head p{margin-top:10px}.quick-grid{grid-template-columns:1fr}.quick-item,.quick-item:first-child{border-left:0;border-right:0}.quick-item:nth-child(2){border-top:1px solid var(--line)}.feature-main{padding:25px;min-height:270px}.info-list{grid-template-columns:1fr}.download{padding:26px 20px}.news-intro{display:block}.news-item{grid-template-columns:1fr auto;gap:4px 12px;padding:17px 0}.news-date{grid-column:1/-1}.news-title{font-size:15px}.news-excerpt{grid-column:1/-1}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}

/* roulang page: article */
:root{
      --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
      --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
      --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
      --max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none;transition:.22s ease}
    a:hover{color:var(--orange)}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{position:relative;z-index:10;background:var(--coal);color:#fff}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:12px;min-width:290px}
    .logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
    .logo strong{display:block;font-size:17px;line-height:1.2;letter-spacing:.2px}
    .logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
    .main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
    .main-nav a{position:relative;display:flex;align-items:center;color:#c9c9c2;font-size:14px;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:#fff}
    .main-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--orange)}
    .header-tools{display:flex;align-items:center;gap:12px}
    .search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
    .search-trigger:hover{border-color:var(--orange);color:#fff}
    .btn{min-height:46px;padding:11px 19px;border:0;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
    .btn-secondary:hover{background:#f8d8c9;color:var(--ink);transform:translateY(-2px)}
    .btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .menu-toggle{display:none;border:1px solid #666;background:none;color:#fff;border-radius:8px;padding:8px 11px}
    .article-hero{background:var(--coal);color:#fff;padding:62px 0 70px;position:relative;overflow:hidden}
    .article-hero:after{content:"ARTICLE";position:absolute;right:4%;bottom:-30px;color:rgba(255,255,255,.035);font-size:110px;font-weight:900;letter-spacing:-5px}
    .breadcrumbs{position:relative;z-index:1;display:flex;gap:10px;align-items:center;color:#aaa9a1;font-size:13px;margin-bottom:28px;white-space:nowrap;overflow:hidden}
    .breadcrumbs a:hover{color:var(--lime)}
    .breadcrumbs span:last-child{overflow:hidden;text-overflow:ellipsis}
    .eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:14px}
    .article-hero h1{position:relative;z-index:1;max-width:850px;margin:0;font-size:clamp(32px,4.5vw,56px);line-height:1.2;letter-spacing:-1.5px}
    .article-meta{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px 25px;margin-top:24px;color:#c8c7c0;font-size:14px}
    .article-meta b{color:#fff;font-weight:600}
    .tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:5px;background:var(--lime);color:var(--ink);font-size:12px;font-weight:800}
    .article-layout{display:grid;grid-template-columns:minmax(0,780px) 260px;gap:72px;align-items:start;padding:72px 0 86px}
    .article-content{min-width:0;background:var(--white);border:1px solid var(--line);border-radius:18px;padding:44px 50px;box-shadow:var(--shadow)}
    .article-content h2{font-size:29px;line-height:1.35;margin:38px 0 15px;padding-left:16px;border-left:4px solid var(--orange)}
    .article-content h3{font-size:21px;line-height:1.45;margin:28px 0 10px}
    .article-content p{margin:0 0 20px;color:#45443e;line-height:1.95}
    .article-content ul,.article-content ol{margin:15px 0 24px;padding-left:26px;color:#45443e}
    .article-content li{margin:8px 0}
    .article-content blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--lime);background:#f1f1df;color:#4e5040}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;display:block;overflow-x:auto}
    .article-content th,.article-content td{min-width:130px;padding:12px 14px;border:1px solid var(--line);text-align:left}
    .article-content th{background:var(--soft)}
    .article-content img{margin:25px auto;border-radius:12px}
    .article-content figure{margin:28px 0}
    .article-content figcaption{color:var(--muted);font-size:13px;text-align:center;margin-top:-15px}
    .article-content code{padding:2px 6px;background:var(--soft);border-radius:4px}
    .article-content pre{overflow:auto;padding:18px;background:var(--coal);color:#f4f2ea;border-radius:10px}
    .article-empty{text-align:center;padding:60px 15px}
    .article-empty h2{border:0;padding:0;margin:0 0 10px;font-size:28px}
    .article-empty p{color:var(--muted)}
    .article-side{position:sticky;top:25px}
    .side-card{padding:23px;background:#e7e1d6;border-radius:16px;margin-bottom:16px}
    .side-card h2{font-size:18px;margin:0 0 14px}
    .side-card p{font-size:14px;color:#5e5c55;margin:0 0 15px}
    .side-links{list-style:none;padding:0;margin:0;border-top:1px solid #cbc6ba}
    .side-links li{border-bottom:1px solid #cbc6ba}
    .side-links a{display:block;padding:11px 0;font-size:14px}
    .side-links a:before{content:"↗";color:var(--orange);margin-right:8px}
    .article-bottom{display:flex;justify-content:space-between;gap:16px;margin-top:45px;padding-top:25px;border-top:1px solid var(--line)}
    .article-bottom a{font-weight:700}
    .share-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:25px}
    .share-row a{padding:7px 12px;border:1px solid var(--line);border-radius:7px;color:var(--muted);font-size:13px}
    .share-row a:hover{border-color:var(--orange);color:var(--orange);background:#fff3e9}
    .cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:82px}
    .cta h2{font-size:27px;margin:0}
    .cta p{color:#ffe7dd;margin:5px 0 0}
    .cta .btn{background:#fff;color:var(--orange-dark)}
    .site-footer{background:var(--coal);color:#fff;padding:55px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand p{color:#aaa9a1;max-width:320px;margin-top:15px;font-size:14px}
    .footer-title{font-weight:800;margin-bottom:14px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:8px 0}
    .footer-links a{color:#aaa9a1;font-size:14px}
    .footer-links a:hover{color:var(--lime)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid #3a3b36;color:#898980;font-size:12px}
    .search-panel{display:none;position:absolute;right:24px;top:72px;width:min(420px,calc(100% - 48px));padding:16px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;color:var(--ink)}
    .search-panel.open{display:block}
    .search-panel form{display:flex;gap:8px}
    .search-panel input{min-width:0;flex:1;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fff}
    @media(max-width:1024px){
      .header-inner{gap:18px}.logo{min-width:245px}.main-nav{gap:16px}
      .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:35px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 34px,var(--max))}
      .header-inner{height:70px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}
      .menu-toggle{display:block}.header-tools .btn-primary{display:none}
      .main-nav{display:none;position:absolute;left:0;right:0;top:70px;height:auto;padding:12px 17px 18px;background:var(--coal-2);flex-direction:column;gap:0;border-top:1px solid #41423d}
      .main-nav.open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3b3c37}
      .main-nav a.active:after{left:auto;right:0;top:14px;bottom:14px;width:3px;height:auto}
      .article-hero{padding:42px 0 50px}.article-hero h1{font-size:35px}
      .article-layout{display:block;padding:42px 0 55px}.article-side{position:static;margin-top:22px}
      .article-content{padding:30px 23px}.article-content h2{font-size:25px}
      .cta{margin-bottom:48px;padding:30px 24px;display:block}.cta .btn{margin-top:18px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:480px){
      .container{width:calc(100% - 28px)}.logo-mark{width:32px;height:32px}
      .header-tools{gap:7px}.search-trigger{padding:8px 9px;font-size:13px}
      .article-hero h1{font-size:30px;letter-spacing:-.7px}.article-meta{display:block}
      .article-meta span{display:inline-block;margin:4px 12px 4px 0}
      .article-content{padding:25px 17px}.article-content p{font-size:15px}
      .article-bottom{display:block}.article-bottom a{display:block;margin:10px 0}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
    }

/* roulang page: category1 */
:root{
  --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
  --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
  --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans 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:.22s ease}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{background:var(--coal);color:#fff;position:relative;z-index:10}
.header-inner{height:78px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:12px;min-width:290px}
.logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
.logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
.logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
.main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
.main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff}
.main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
.header-tools{display:flex;align-items:center;gap:12px}
.search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
.search-trigger:hover{border-color:var(--orange);color:#fff}
.btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
.btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
.btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
.menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
.page-hero{background:var(--coal);color:#fff;padding:68px 0 72px;position:relative;overflow:hidden}
.page-hero:after{content:"NEWS";position:absolute;right:4%;bottom:-30px;color:rgba(255,255,255,.05);font-size:150px;font-weight:900;letter-spacing:-8px}
.breadcrumb{display:flex;gap:8px;align-items:center;color:#aaa9a1;font-size:13px;margin-bottom:25px;position:relative;z-index:1}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb strong{color:#fff;max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:13px;position:relative;z-index:1}
.page-hero h1{font-size:clamp(34px,4.3vw,56px);line-height:1.18;letter-spacing:-1.5px;max-width:750px;position:relative;z-index:1;margin:0}
.page-hero h1 em{font-style:normal;color:var(--orange)}
.hero-copy{color:#c8c7c0;max-width:670px;margin:20px 0 0;font-size:17px;position:relative;z-index:1}
.section{padding:78px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:30px}
.section h2{font-size:32px;line-height:1.25;margin:5px 0 0}
.section-head p{color:var(--muted);max-width:500px;margin:0}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:65px;align-items:start}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:125px minmax(0,1fr) 28px;gap:23px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}
.news-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-date strong{display:block;color:var(--ink);font-size:22px;line-height:1.2}
.news-tag,.badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:5px;background:var(--soft);color:#66645d;font-size:12px;font-weight:700}
.news-tag.orange{background:#f8d8c9;color:var(--orange-dark)}
.news-tag.green{background:#e5edb7;color:#586516}
.news-title{font-size:18px;font-weight:800;line-height:1.45;margin:9px 0 5px}
.news-summary{color:var(--muted);font-size:14px;margin:0}
.news-item:hover .news-title{color:var(--orange)}
.news-arrow{font-size:23px;color:var(--orange)}
.side-panel{background:var(--white);border:1px solid var(--line);border-radius:18px;padding:25px;box-shadow:var(--shadow)}
.side-panel h3{margin:0 0 17px;font-size:20px}
.side-panel p{font-size:14px;color:var(--muted);margin:0 0 20px}
.side-links{list-style:none;padding:0;margin:0}
.side-links li{border-top:1px solid var(--line)}
.side-links a{display:flex;justify-content:space-between;gap:12px;padding:14px 0;font-weight:700;font-size:14px}
.side-links a span{color:var(--orange)}
.side-links a:hover{color:var(--orange)}
.notice{margin-top:18px;border-left:4px solid var(--lime);background:#f0f2d7;padding:17px 18px;font-size:13px;color:#555742}
.topic-strip{background:#e7e1d6;padding:30px;border-radius:18px;display:grid;grid-template-columns:1.1fr 2fr;gap:40px;align-items:center}
.topic-strip h2{font-size:25px;margin:0 0 8px}
.topic-strip p{color:#5e5c55;margin:0}
.topic-list{display:flex;flex-wrap:wrap;gap:10px}
.topic-list a{background:var(--white);border:1px solid var(--line);padding:11px 15px;border-radius:8px;font-size:14px;font-weight:700}
.topic-list a:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:0 20px}
.faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
.faq-item[open]{border-left:4px solid var(--orange)}
.faq-item[open] summary{color:var(--orange)}
.faq-item[open] summary:after{content:"−"}
.faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px;margin:0}
.cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta h2{font-size:27px;margin:0}
.cta p{color:#ffe7dd;margin:5px 0 0}
.cta .btn{background:#fff;color:var(--orange-dark)}
.cta .btn:hover{background:#fff3ed}
.site-footer{background:var(--coal);color:#fff;padding:55px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
.footer-brand p{color:#aaa9a1;max-width:320px;margin-top:15px;font-size:14px}
.footer-title{font-weight:800;margin-bottom:14px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:8px 0}
.footer-links a{color:#aaa9a1;font-size:14px}
.footer-links a:hover{color:var(--lime);padding-left:3px}
.footer-bottom{border-top:1px solid #3b3c37;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#85857e;font-size:12px}
.search-box{display:flex;gap:8px;margin-top:25px}
.search-box input{min-width:0;flex:1;border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:10px 12px;color:var(--ink)}
.search-box button{border:0;background:var(--coal);color:#fff;border-radius:8px;padding:10px 14px}
.search-box button:hover{background:var(--orange)}
@media(max-width:1024px){
  .header-inner{gap:18px}.logo{min-width:245px}.main-nav{gap:16px}
  .content-layout{gap:35px}
}
@media(max-width:768px){
  .container{width:min(var(--max),calc(100% - 32px))}
  .header-inner{height:70px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}
  .main-nav{display:none;position:absolute;top:70px;left:0;right:0;height:auto;padding:10px 16px 18px;background:var(--coal-2);flex-direction:column;gap:0}
  .main-nav.open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3d3e39}
  .main-nav a.active:after{left:auto;width:34px;right:auto;bottom:11px}
  .header-tools{gap:7px}.search-trigger{font-size:0;padding:10px}.search-trigger:before{content:"⌕";font-size:20px}
  .header-tools .btn{display:none}.menu-toggle{display:block}
  .page-hero{padding:48px 0 55px}.page-hero h1{font-size:38px}.hero-copy{font-size:16px}
  .section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:12px}
  .content-layout{grid-template-columns:1fr;gap:34px}.news-item{grid-template-columns:92px minmax(0,1fr) 20px;gap:14px;padding:21px 0}
  .news-date strong{font-size:18px}.news-title{font-size:16px}.news-summary{font-size:13px}
  .topic-strip{grid-template-columns:1fr;gap:22px;padding:25px}
  .faq-grid{grid-template-columns:1fr}.cta{display:block;padding:30px 25px}.cta .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:7px}
}
@media(max-width:480px){
  .logo-mark{width:31px;height:31px}.logo small{font-size:10px}
  .page-hero h1{font-size:31px;letter-spacing:-.8px}.page-hero:after{font-size:82px}
  .news-item{grid-template-columns:1fr 20px;gap:5px}.news-date{grid-column:1/-1;display:flex;gap:8px;align-items:center}.news-date strong{font-size:16px}.news-title{margin-top:5px}
  .section h2{font-size:27px}.topic-list a{flex:1 1 42%}.footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
      --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
      --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
      --line:#dedbd3;--soft:#eeeae1;--radius:16px;
      --shadow:0 12px 30px rgba(35,31,25,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans 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:.22s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{background:var(--coal);color:#fff;position:relative;z-index:10}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:12px;min-width:290px}
    .logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
    .logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
    .logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
    .main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
    .main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:#fff}
    .main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
    .header-tools{display:flex;align-items:center;gap:12px}
    .search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
    .search-trigger:hover{border-color:var(--orange);color:#fff}
    .btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
    .btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
    .btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
    .page-hero{background:var(--coal);color:#fff;padding:68px 0 72px;position:relative;overflow:hidden}
    .page-hero:after{content:"APP";position:absolute;right:5%;bottom:-40px;color:rgba(255,255,255,.045);font-size:180px;font-weight:900;letter-spacing:-12px}
    .page-hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:55px;align-items:center}
    .eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:15px}
    .page-hero h1{font-size:clamp(35px,5vw,58px);line-height:1.18;letter-spacing:-1.8px;margin:0;max-width:700px}
    .page-hero h1 em{font-style:normal;color:var(--orange)}
    .hero-copy{color:#c8c7c0;max-width:650px;margin:22px 0 27px;font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .page-hero .btn-secondary{border-color:#777871;color:#fff}
    .page-hero .btn-secondary:hover{color:var(--ink)}
    .crumbs{margin-top:27px;color:#a8a8a0;font-size:13px}
    .crumbs a:hover{color:var(--lime)}
    .app-visual{min-height:275px;position:relative;display:grid;place-items:center}
    .screen-frame{width:220px;height:300px;background:#292b27;border:7px solid #555850;border-radius:28px;box-shadow:0 20px 38px rgba(0,0,0,.3);padding:18px 13px;transform:rotate(5deg)}
    .screen-top{height:17px;width:62px;background:#111;border-radius:20px;margin:0 auto 18px}
    .screen-panel{height:105px;border-radius:12px;background:#e75d2f;position:relative;overflow:hidden}
    .screen-panel:after{content:"R";position:absolute;right:12px;bottom:-20px;color:rgba(255,255,255,.25);font-size:100px;font-weight:900}
    .screen-lines{margin-top:17px;display:grid;gap:9px}
    .screen-lines i{height:9px;background:#6d7066;border-radius:5px;display:block}
    .screen-lines i:nth-child(2){width:72%}.screen-lines i:nth-child(3){width:86%}
    .app-sticker{position:absolute;right:0;top:18px;background:var(--lime);color:var(--ink);padding:8px 13px;border-radius:5px;font-size:12px;font-weight:800;transform:rotate(-6deg)}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section h2{font-size:34px;line-height:1.25;margin:4px 0}
    .section-head p{color:var(--muted);max-width:500px;margin:0}
    .download-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
    .download-panel,.support-panel{background:var(--white);border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow)}
    .download-panel{border-top:4px solid var(--orange)}
    .panel-kicker{font-size:12px;color:var(--orange-dark);font-weight:800;letter-spacing:.7px}
    .download-panel h3,.support-panel h3{font-size:25px;margin:8px 0 12px}
    .download-panel p,.support-panel p{color:var(--muted)}
    .version-row{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0}
    .badge{display:inline-flex;padding:5px 10px;border-radius:5px;background:#353731;color:#e5e5dc;font-size:12px}
    .badge.lime{background:var(--lime);color:var(--ink)}
    .platform-tabs{display:flex;gap:10px;border-bottom:1px solid var(--line);margin:23px 0 22px}
    .platform-tab{border:0;background:transparent;padding:11px 15px;color:var(--muted);border-bottom:3px solid transparent;font-weight:700}
    .platform-tab.active,.platform-tab:hover{color:var(--orange-dark);border-bottom-color:var(--orange)}
    .platform-content{display:grid;grid-template-columns:1fr 170px;gap:24px;align-items:center}
    .spec-list{display:grid;gap:0;margin:0}
    .spec-list div{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding:11px 0;font-size:14px}
    .spec-list dt{color:var(--muted)}.spec-list dd{margin:0;font-weight:800;text-align:right}
    .qr-box{height:150px;width:150px;border:8px solid #fff;background-color:#20201d;background-image:linear-gradient(45deg,#f7f4ee 25%,transparent 25%,transparent 75%,#f7f4ee 75%),linear-gradient(45deg,#f7f4ee 25%,transparent 25%,transparent 75%,#f7f4ee 75%);background-size:22px 22px;background-position:0 0,11px 11px;display:grid;place-items:center;color:var(--orange-dark);font-size:11px;font-weight:800;text-align:center;box-shadow:0 0 0 1px var(--line)}
    .qr-box span{background:var(--white);padding:4px 6px}
    .button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
    .support-panel{background:#e7e1d6;box-shadow:none}
    .support-list{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:12px}
    .support-list li{display:flex;gap:12px;align-items:flex-start;border-top:1px solid #d4cfc3;padding-top:12px}
    .support-list b{width:28px;height:28px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:7px;flex:0 0 auto;font-size:13px}
    .support-list strong{display:block;font-size:15px}.support-list span{display:block;color:var(--muted);font-size:13px}
    .steps{background:#eeeae1}
    .step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .step-card{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:25px;position:relative}
    .step-number{color:var(--orange);font-size:34px;font-weight:900;line-height:1}
    .step-card h3{font-size:19px;margin:18px 0 7px}.step-card p{color:var(--muted);font-size:14px;margin:0}
    .notice{margin-top:20px;border-left:4px solid var(--lime);background:#fffdf9;padding:15px 18px;color:#5e5c55;font-size:14px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:0 20px}
    .faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--orange);font-size:22px}
    .faq-item[open] summary{color:var(--orange)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px;margin:0}
    .cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:27px;margin:0}.cta p{color:#ffe7dd;margin:5px 0 0}.cta .btn{background:#fff;color:var(--orange-dark)}
    .site-footer{background:var(--coal);color:#fff;padding:55px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand p{color:#aaa9a1;max-width:320px;margin-top:15px;font-size:14px}
    .footer-title{font-weight:800;margin-bottom:15px}
    .footer-links{padding:0;margin:0;list-style:none;display:grid;gap:9px}
    .footer-links a{color:#aaa9a1;font-size:14px}.footer-links a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{border-top:1px solid #3d3f39;padding-top:19px;color:#85867e;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:1024px){
      .header-inner{gap:18px}.logo{min-width:250px}.main-nav{gap:16px}
      .page-hero-inner{gap:30px}.download-layout{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .header-inner{height:70px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;height:auto;background:var(--coal-2);padding:10px 20px;flex-direction:column;gap:0;border-top:1px solid #3e403a}
      .main-nav.open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3d3f39}.main-nav a.active:after{left:auto;width:36px;right:auto;height:3px}
      .header-tools .search-trigger{display:none}.header-tools .btn{display:none}.menu-toggle{display:block}
      .page-hero{padding:48px 0 54px}.page-hero-inner{grid-template-columns:1fr}.app-visual{min-height:240px;order:2}
      .page-hero h1{font-size:38px}.section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .platform-content{grid-template-columns:1fr}.qr-box{margin:auto}.step-grid,.faq-grid{grid-template-columns:1fr}
      .cta{display:block;padding:30px 25px}.cta .btn{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:480px){
      .logo-mark{width:31px;height:31px}.logo small{font-size:10px}.page-hero h1{font-size:31px;letter-spacing:-.8px}
      .hero-copy{font-size:15px}.hero-actions,.button-row{display:grid;grid-template-columns:1fr}.btn{width:100%}
      .download-panel,.support-panel{padding:23px 19px}.platform-tabs{overflow:auto;white-space:nowrap}.platform-tab{padding:10px 11px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:7px}
    }

/* roulang page: category3 */
:root{
  --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
  --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
  --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans 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:.22s ease}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{background:var(--coal);color:#fff;position:relative;z-index:20}
.header-inner{height:78px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:12px;min-width:290px}
.logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
.logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
.logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
.main-nav{display:flex;align-items:stretch;gap:25px;height:78px;flex:1}
.main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff}
.main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
.header-tools{display:flex;align-items:center;gap:12px}
.search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px;font-size:14px}
.search-trigger:hover{border-color:var(--orange);color:#fff}
.btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
.btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
.btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
.btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
.menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
.page-hero{background:var(--coal);color:#fff;padding:42px 0 64px;position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;width:360px;height:360px;border:1px solid #494a44;border-radius:50%;right:9%;top:-190px}
.breadcrumb{position:relative;display:flex;gap:9px;align-items:center;color:#b6b6ae;font-size:13px;margin-bottom:30px}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb span:last-child{color:#fff;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-layout{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:end}
.eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:13px}
.page-hero h1{font-size:clamp(34px,4vw,52px);line-height:1.2;letter-spacing:-1.5px;margin:0;max-width:720px}
.page-hero p{color:#c9c8c1;max-width:690px;margin:20px 0 0;font-size:17px}
.guide-visual{min-height:175px;border:1px solid #4a4c45;border-radius:18px;background:linear-gradient(135deg,#2b2d28,#1e201d);padding:23px;position:relative;overflow:hidden}
.guide-visual:after{content:"GUIDE";position:absolute;right:-13px;bottom:-28px;color:rgba(198,217,91,.13);font-size:72px;font-weight:900;letter-spacing:-4px}
.visual-top{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1}
.visual-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--orange);border-radius:10px 10px 3px 10px;font-weight:900}
.status-dot{font-size:12px;color:var(--lime);font-weight:700}
.step-row{display:flex;gap:8px;align-items:center;position:relative;z-index:1;margin-top:30px}
.step-row span{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;border:1px solid #777871;color:#ddd;font-size:12px;font-weight:800}
.step-row span:first-child{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.step-row i{display:block;height:1px;flex:1;background:#65665e}
.section{padding:80px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:31px}
.section-head h2{font-size:34px;line-height:1.25;margin:4px 0 0;letter-spacing:-.7px}
.section-head p{color:var(--muted);max-width:480px;margin:0}
.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:38px;align-items:start}
.guide-index{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:11px}
.index-link{display:flex;gap:15px;align-items:center;padding:17px;border-radius:11px;border-bottom:1px solid var(--soft)}
.index-link:last-child{border-bottom:0}
.index-link:hover{background:#fff0e8;color:var(--orange)}
.index-no{color:var(--orange);font-weight:900;font-size:13px;min-width:28px}
.index-link strong{display:block;font-size:16px}
.index-link small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.topic-list{border-top:1px solid var(--line)}
.topic{display:grid;grid-template-columns:74px 1fr auto;gap:20px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}
.topic-level{font-size:12px;font-weight:800;color:var(--orange);padding-top:4px}
.topic h3{font-size:20px;line-height:1.4;margin:0 0 8px}
.topic h3 a:hover{color:var(--orange);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.topic p{color:var(--muted);font-size:14px;margin:0 0 12px}
.topic-meta{display:flex;flex-wrap:wrap;gap:8px}
.badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:5px;background:#e8e5dd;color:#515049;font-size:12px;line-height:1.4}
.badge.lime{background:var(--lime);color:var(--ink)}
.badge.orange{background:#f8d8c9;color:#963718}
.topic-arrow{font-size:23px;color:var(--orange);padding-top:12px}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.side-card.dark{background:var(--coal-2);border-color:var(--coal-2);color:#fff}
.side-card h3{font-size:18px;margin:0 0 14px}
.side-card p{font-size:14px;color:var(--muted);margin:0}
.side-card.dark p{color:#c0c0b9}
.version-list{list-style:none;margin:15px 0 0;padding:0}
.version-list li{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.version-list li:last-child{border-bottom:0}
.version-list strong{display:block;font-size:13px}
.version-list span{color:var(--muted);font-size:12px}
.side-card .btn{width:100%;margin-top:17px}
.steps-panel{background:#e8e2d7;border-radius:20px;padding:38px;position:relative;overflow:hidden}
.steps-panel:before{content:"";position:absolute;width:280px;height:280px;background:var(--lime);border-radius:50%;right:-135px;top:-160px;opacity:.68}
.steps-head{position:relative;display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:29px}
.steps-head h2{font-size:31px;line-height:1.3;margin:0}
.steps-head p{margin:0;color:#5e5d56;max-width:440px}
.step-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.step-card{background:rgba(255,253,249,.86);border:1px solid rgba(255,255,255,.8);border-radius:13px;padding:22px;min-height:188px}
.step-card b{display:grid;place-items:center;width:35px;height:35px;background:var(--coal);color:var(--lime);border-radius:7px;margin-bottom:18px;font-size:13px}
.step-card h3{font-size:17px;margin:0 0 8px}
.step-card p{color:#625f58;font-size:14px;margin:0}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:0 20px}
.faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
.faq-item[open]{border-color:var(--orange)}
.faq-item[open] summary{color:var(--orange)}
.faq-item[open] summary:after{content:"−"}
.faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px;margin:0}
.cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta h2{font-size:27px;line-height:1.3;margin:0}
.cta p{color:#ffe7dd;margin:5px 0 0}
.cta .btn{background:#fff;color:var(--orange-dark);flex:none}
.cta .btn:hover{background:var(--coal);color:#fff}
.search-panel{display:none;position:fixed;inset:0;background:rgba(23,24,22,.7);z-index:50;padding:20px;align-items:flex-start;justify-content:center}
.search-panel.is-open{display:flex}
.search-box{width:min(660px,100%);background:var(--white);border-radius:16px;padding:25px;margin-top:10vh;box-shadow:var(--shadow)}
.search-box-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}
.close-search{border:0;background:transparent;font-size:24px;line-height:1;color:var(--ink)}
.search-row{display:flex;gap:10px}
.search-row input{min-width:0;flex:1;border:1px solid var(--line);border-radius:9px;padding:12px 14px;background:#fff}
.search-help{font-size:13px;color:var(--muted);margin:12px 0 0}
.site-footer{background:var(--coal);color:#fff;padding:55px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
.footer-brand p{color:#aaa9a1;max-width:320px;margin-top:15px;font-size:14px}
.footer-title{font-weight:800;margin-bottom:13px}
.footer-links{padding:0;margin:0;list-style:none}
.footer-links li{margin:8px 0}
.footer-links a{color:#aaa9a1;font-size:14px}
.footer-links a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid #3a3b37;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#898981;font-size:12px}
@media(max-width:1024px){
  .header-inner{gap:19px}.logo{min-width:250px}.main-nav{gap:16px}
  .guide-grid{grid-template-columns:minmax(0,1fr) 270px}.topic{grid-template-columns:62px 1fr auto}
}
@media(max-width:768px){
  .container{width:min(var(--max),calc(100% - 32px))}
  .header-inner{height:68px;gap:10px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}.logo-mark{width:31px;height:31px}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;height:auto;background:var(--coal);padding:8px 16px 18px;border-top:1px solid #3d3e38}.main-nav.open{display:block}.main-nav a{padding:12px 0}.main-nav a.active:after{bottom:5px;right:auto;width:35px}.menu-toggle{display:block}.search-trigger{display:none}.header-tools .btn{min-height:39px;padding:8px 10px;font-size:13px}
  .page-hero{padding:30px 0 45px}.hero-layout{grid-template-columns:1fr;gap:25px}.guide-visual{min-height:140px}.page-hero h1{font-size:35px}.page-hero p{font-size:15px}
  .section{padding:48px 0}.section-head{display:block;margin-bottom:24px}.section-head h2{font-size:28px}.section-head p{margin-top:10px}
  .guide-grid{grid-template-columns:1fr}.guide-aside{display:grid;grid-template-columns:1fr 1fr;gap:12px}.side-card{margin:0}.topic{grid-template-columns:55px 1fr auto;gap:13px}.topic h3{font-size:18px}
  .step-grid,.faq-grid{grid-template-columns:1fr}.steps-panel{padding:26px}.steps-head{display:block}.steps-head p{margin-top:10px}.step-card{min-height:0}
  .cta{padding:30px;display:block}.cta .btn{margin-top:19px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
}
@media(max-width:520px){
  body{font-size:15px}.container{width:calc(100% - 28px)}.logo strong{font-size:12px}.logo small{font-size:10px}.header-tools .btn{font-size:0;padding:8px 11px;min-height:38px}.header-tools .btn:after{content:"下载";font-size:13px}.page-hero h1{font-size:30px}.guide-visual{padding:18px}.topic{grid-template-columns:1fr;padding:20px 0}.topic-level{padding:0}.topic-arrow{display:none}.topic h3{font-size:17px}.guide-aside{grid-template-columns:1fr}.section-head h2{font-size:26px}.steps-panel{padding:22px}.step-card{padding:18px}.cta{padding:25px}.cta h2{font-size:23px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.search-row{flex-direction:column}
}

/* roulang page: category2 */
:root{
      --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
      --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
      --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
      --max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans 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:.22s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{background:var(--coal);color:#fff;position:relative;z-index:10}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:12px;min-width:290px}
    .logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
    .logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
    .logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
    .main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
    .main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:#fff}
    .main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
    .header-tools{display:flex;align-items:center;gap:12px}
    .search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
    .search-trigger:hover{border-color:var(--orange);color:#fff}
    .btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
    .btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
    .btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
    .btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
    .page-hero{background:var(--coal);color:#fff;padding:68px 0 70px;position:relative;overflow:hidden}
    .page-hero:after{content:"APP";position:absolute;right:5%;bottom:-42px;color:rgba(255,255,255,.055);font-size:180px;line-height:1;font-weight:900;letter-spacing:-12px}
    .breadcrumb{color:#aaa9a1;font-size:13px;margin-bottom:24px;position:relative;z-index:1}
    .breadcrumb a:hover{color:var(--lime)}
    .hero-content{max-width:780px;position:relative;z-index:1}
    .eyebrow{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:14px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,62px);line-height:1.16;letter-spacing:-2px;margin-bottom:20px}
    h1 em{font-style:normal;color:var(--orange)}
    .hero-content p{max-width:680px;color:#cac9c2;font-size:17px;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-actions .btn-secondary{border-color:#777871;color:#fff}
    .hero-actions .btn-secondary:hover{color:var(--ink)}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:1px}
    h2{font-size:34px;line-height:1.25;margin:6px 0 0}
    .section-head p{color:var(--muted);max-width:500px;margin-bottom:0}
    .download-layout{display:grid;grid-template-columns:1.22fr .78fr;gap:24px;align-items:stretch}
    .download-panel{background:var(--white);border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow)}
    .download-panel.dark{background:var(--coal);color:#fff;border-color:var(--coal)}
    .panel-top{display:flex;justify-content:space-between;align-items:start;gap:15px;margin-bottom:24px}
    .panel-top h3{font-size:25px;margin:0 0 5px}
    .panel-top p{color:var(--muted);font-size:14px;margin:0}
    .dark .panel-top p{color:#bbbcb4}
    .badge{display:inline-flex;padding:5px 10px;border-radius:5px;background:#353731;color:#e5e5dc;font-size:12px;white-space:nowrap}
    .badge.lime{background:var(--lime);color:var(--ink)}
    .platform-tabs{display:flex;gap:10px;border-bottom:1px solid var(--line);margin-bottom:24px}
    .platform-tab{background:transparent;border:0;border-bottom:3px solid transparent;padding:10px 4px;margin-right:18px;color:var(--muted);font-weight:700}
    .platform-tab.active{color:var(--orange);border-color:var(--orange)}
    .spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;margin-bottom:25px}
    .spec{border-top:1px solid var(--line);padding:14px 0}
    .spec small{display:block;color:var(--muted);font-size:12px}
    .spec strong{display:block;font-size:16px;margin-top:2px}
    .download-actions{display:flex;gap:10px;flex-wrap:wrap}
    .download-actions .btn{min-width:150px}
    .download-actions .btn:disabled{opacity:.56;cursor:not-allowed;transform:none;background:#8d8d85}
    .notice{border-left:4px solid var(--lime);background:#f2f0e8;padding:14px 16px;color:#5d5b53;font-size:13px;margin-top:22px}
    .dark .notice{background:#292b27;color:#d2d2c9}
    .qr-panel{display:flex;flex-direction:column;justify-content:space-between;background:#e8e2d7;border-radius:20px;padding:32px;min-height:100%}
    .qr-panel h3{font-size:24px;margin-bottom:8px}
    .qr-panel p{color:#646159;font-size:14px}
    .qr-box{width:190px;height:190px;border:10px solid var(--white);background:#d7d1c6;display:grid;place-items:center;margin:20px auto;position:relative}
    .qr-box:before{content:"扫码区域";font-weight:800;color:#777268;font-size:14px}
    .qr-box:after{content:"";position:absolute;inset:22px;border:2px dashed #aaa398}
    .qr-note{text-align:center;font-size:12px;color:var(--muted);margin:0}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .step{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px;position:relative}
    .step-number{display:grid;place-items:center;width:34px;height:34px;background:var(--orange);color:#fff;border-radius:8px;font-weight:900;margin-bottom:18px}
    .step h3{font-size:18px;margin-bottom:8px}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .compatibility{background:#ebe7de}
    .compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .compat-card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:28px}
    .compat-card h3{font-size:22px;margin-bottom:17px}
    .check-list{list-style:none;padding:0;margin:0}
    .check-list li{border-top:1px solid var(--line);padding:12px 0 12px 28px;position:relative;color:#59574f}
    .check-list li:before{content:"✓";position:absolute;left:0;color:#778b19;font-weight:900}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:0 20px}
    .faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
    .faq-item[open] summary{color:var(--orange)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px;margin:0}
    .cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:27px;margin:0}
    .cta p{color:#ffe7dd;margin:5px 0 0}
    .cta .btn{background:#fff;color:var(--orange-dark)}
    .cta .btn:hover{background:#fff2ea}
    .site-footer{background:var(--coal);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
    .footer-brand .logo{min-width:0;margin-bottom:16px}
    .footer-brand p{color:#aead a5;color:#aeada5;font-size:14px;max-width:280px}
    .footer-title{font-weight:800;margin:7px 0 16px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:9px 0;color:#aaa9a1;font-size:14px}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{border-top:1px solid #3b3c37;margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#85857e;font-size:12px}
    @media(max-width:1024px){
      .header-inner{gap:18px}.logo{min-width:250px}.main-nav{gap:16px}
      .download-layout{grid-template-columns:1fr}.qr-panel{min-height:300px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .header-inner{height:70px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;height:auto;background:var(--coal-2);padding:12px 16px;flex-direction:column;gap:0}
      .main-nav.open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3d3e39}.main-nav a.active:after{left:auto;width:4px;height:24px;top:12px;bottom:auto}
      .header-tools .search-trigger{display:none}.header-tools .btn{display:none}.menu-toggle{display:block}
      .page-hero{padding:48px 0 54px}h1{font-size:42px;letter-spacing:-1px}
      .section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:14px}
      .steps,.compat-grid,.faq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:480px){
      .container{width:calc(100% - 28px)}.logo-mark{width:32px;height:32px}.logo small{font-size:10px}
      h1{font-size:32px}.hero-content p{font-size:15px}.hero-actions,.download-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn,.download-actions .btn{width:100%}.download-panel,.qr-panel{padding:23px}
      .panel-top{display:block}.panel-top .badge{margin-top:12px}.spec-grid{grid-template-columns:1fr}
      .platform-tabs{overflow:auto;white-space:nowrap}.qr-box{width:170px;height:170px}
      h2{font-size:28px}.cta{padding:28px 23px;display:block}.cta .btn{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-brand{grid-column:1/-1}
    }

/* roulang page: category3 */
:root{
      --ink:#20201d;--coal:#171816;--coal-2:#242521;--paper:#f7f4ee;--white:#fffdf9;
      --orange:#e75d2f;--orange-dark:#bb3f1e;--lime:#c6d95b;--muted:#77766e;
      --line:#dedbd3;--soft:#eeeae1;--radius:16px;--shadow:0 12px 30px rgba(35,31,25,.08);
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans 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:.22s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{background:var(--coal);color:#fff;position:relative;z-index:10}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:12px;min-width:290px}
    .logo-mark{width:35px;height:35px;background:var(--orange);display:grid;place-items:center;border-radius:9px 9px 3px 9px;color:#fff;font-weight:900;font-size:18px}
    .logo strong{font-size:17px;line-height:1.2;letter-spacing:.2px}
    .logo small{display:block;color:var(--lime);font-size:11px;margin-top:3px}
    .main-nav{display:flex;align-items:stretch;gap:25px;height:100%;flex:1}
    .main-nav a{display:flex;align-items:center;color:#c9c9c2;font-size:14px;position:relative;white-space:nowrap}
    .main-nav a:hover,.main-nav a.active{color:#fff}
    .main-nav a.active:after{content:"";position:absolute;height:3px;background:var(--orange);bottom:0;left:0;right:0}
    .header-tools{display:flex;align-items:center;gap:12px}
    .search-trigger{border:1px solid #55564f;background:transparent;color:#eee;border-radius:8px;padding:9px 13px}
    .search-trigger:hover{border-color:var(--orange);color:#fff}
    .btn{min-height:46px;border:0;border-radius:9px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;transition:.22s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);color:#fff}
    .btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
    .btn-secondary:hover{background:#f8d8c9;transform:translateY(-2px)}
    .btn:focus-visible,.search-trigger:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:1px solid #666;color:#fff;border-radius:8px;padding:8px 11px}
    .page-hero{background:var(--coal);color:#fff;padding:65px 0 70px;position:relative;overflow:hidden}
    .page-hero:before{content:"GUIDE";position:absolute;right:3%;bottom:-42px;color:rgba(255,255,255,.05);font-size:150px;font-weight:900;letter-spacing:-8px}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:#aaa9a1;font-size:13px;margin-bottom:24px;position:relative}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb span:last-child{color:#fff;max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .hero-label{color:var(--lime);font-size:13px;font-weight:800;letter-spacing:1px}
    .page-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-1.8px;max-width:780px;margin:12px 0 18px;position:relative}
    .page-hero h1 em{font-style:normal;color:var(--orange)}
    .hero-summary{color:#c8c7c0;max-width:690px;font-size:17px;margin:0;position:relative}
    .hero-strip{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px;position:relative}
    .badge{display:inline-flex;padding:5px 10px;border-radius:5px;background:#353731;color:#e5e5dc;font-size:12px}
    .badge.lime{background:var(--lime);color:var(--ink)}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .eyebrow{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:1px}
    .section h2{font-size:34px;line-height:1.25;margin:6px 0 0}
    .section-head p{color:var(--muted);max-width:510px;margin:0}
    .guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 315px;gap:28px;align-items:start}
    .guide-panel,.side-panel,.step-card,.topic-card,.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
    .guide-panel{padding:30px}
    .guide-panel h3{font-size:24px;margin:0 0 8px}
    .guide-panel>p{color:var(--muted);margin:0 0 25px}
    .guide-index{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .index-item{border:1px solid var(--line);border-radius:12px;padding:17px 18px;display:flex;gap:13px;align-items:flex-start;background:#fff}
    .index-item:hover{border-color:var(--orange);transform:translateY(-2px);box-shadow:var(--shadow)}
    .index-no{width:30px;height:30px;flex:0 0 30px;background:var(--coal);color:var(--lime);display:grid;place-items:center;border-radius:7px;font-size:12px;font-weight:800}
    .index-item strong{display:block;font-size:15px;line-height:1.4}
    .index-item span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .side-panel{padding:25px;background:#e9e3d8}
    .side-panel h3{font-size:21px;margin:0 0 18px}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{border-top:1px solid #d4cec2;padding:13px 0}
    .side-list li:last-child{border-bottom:1px solid #d4cec2}
    .side-list a{display:flex;justify-content:space-between;gap:10px;font-weight:700;font-size:14px}
    .side-list a:hover{color:var(--orange-dark)}
    .side-list small{color:var(--muted);font-weight:400}
    .topic-section{background:#eeeae1}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .topic-card{padding:24px;position:relative;overflow:hidden}
    .topic-card:after{content:"";position:absolute;right:-25px;bottom:-30px;width:100px;height:100px;border:14px solid rgba(231,93,47,.1);border-radius:50%}
    .topic-card h3{font-size:20px;margin:14px 0 7px}
    .topic-card p{color:var(--muted);font-size:14px;margin:0 0 18px}
    .topic-meta{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:14px}
    .difficulty{color:var(--orange-dark);font-weight:800}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .step-card{padding:25px}
    .step-card:nth-child(2){transform:translateY(18px)}
    .step-number{font-size:34px;font-weight:900;color:var(--orange);line-height:1}
    .step-card h3{font-size:19px;margin:17px 0 7px}
    .step-card p{color:var(--muted);font-size:14px;margin:0}
    .version-box{background:var(--coal);color:#fff;border-radius:20px;padding:34px 38px;display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:center}
    .version-box h2{font-size:29px;margin:7px 0 10px}
    .version-box p{color:#c8c7c0;margin:0}
    .version-details{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
    .version-details div{border-top:1px solid #44463f;padding:13px 0}
    .version-details dt{font-size:12px;color:#aaa9a1}
    .version-details dd{margin:2px 0 0;font-weight:700}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{padding:0 20px}
    .faq-item summary{padding:18px 0;font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}
    .faq-item[open] summary{color:var(--orange)}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{padding:0 0 18px;color:var(--muted);font-size:14px;margin:0}
    .cta{background:var(--orange);color:#fff;padding:38px 45px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{font-size:27px;margin:0}
    .cta p{color:#ffe7dd;margin:5px 0 0}
    .cta .btn{background:#fff;color:var(--orange-dark)}
    .cta .btn:hover{background:#fff4ec}
    .site-footer{background:var(--coal);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#aead a6;color:#aead a6;font-size:14px;max-width:270px;margin-top:18px}
    .footer-title{font-weight:800;margin-bottom:14px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:9px 0}
    .footer-links a{color:#aaa9a1;font-size:14px}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{border-top:1px solid #3b3d37;margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#92928a;font-size:12px}
    .search-panel{display:none;position:absolute;top:78px;right:24px;background:var(--white);color:var(--ink);width:min(380px,calc(100% - 48px));padding:18px;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 12px 12px}
    .search-panel.is-open{display:block}
    .search-panel label{font-size:13px;font-weight:800;display:block;margin-bottom:7px}
    .search-row{display:flex;gap:8px}
    .search-row input{min-width:0;flex:1;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}
    .search-row button{border:0;border-radius:8px;padding:0 15px;background:var(--orange);color:#fff;font-weight:700}
    @media(max-width:1024px){
      .header-inner{gap:18px}.logo{min-width:245px}.main-nav{gap:16px}
      .guide-layout{grid-template-columns:1fr 280px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .header-inner{height:70px}.logo{min-width:0;flex:1}.logo strong{font-size:14px}.logo-mark{width:32px;height:32px}
      .menu-toggle{display:block}.header-tools .search-trigger{display:none}.header-tools .btn{min-height:42px;padding:9px 12px;font-size:13px}
      .main-nav{display:none;position:absolute;left:0;right:0;top:70px;height:auto;background:var(--coal-2);padding:8px 16px 14px;flex-direction:column;gap:0}
      .main-nav.is-open{display:flex}.main-nav a{min-height:48px;border-bottom:1px solid #3e4039}.main-nav a.active:after{left:auto;width:35px;right:auto;bottom:8px}
      .page-hero{padding:45px 0 50px}.page-hero h1{font-size:38px}.hero-summary{font-size:16px}
      .section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .guide-layout,.version-box{grid-template-columns:1fr}.guide-panel{padding:22px}.guide-index,.topic-grid,.steps,.faq-grid{grid-template-columns:1fr}
      .step-card:nth-child(2){transform:none}.side-panel{padding:22px}
      .cta{display:block;padding:30px 24px}.cta .btn{margin-top:20px;width:100%}
      .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:7px}
    }
    @media(max-width:480px){
      .container{width:calc(100% - 28px)}.header-tools .btn{font-size:12px;padding:8px 10px}
      .logo strong{font-size:13px}.logo small{font-size:10px}.page-hero h1{font-size:32px;letter-spacing:-1px}
      .hero-strip{gap:7px}.section h2{font-size:28px}.version-box{padding:26px 22px}.version-box h2{font-size:25px}
      .version-details{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
    }

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