/* roulang page: index */
:root{
  --ink:#202522;
  --muted:#68716c;
  --paper:#f4f5ef;
  --panel:#ffffff;
  --line:#d9ded7;
  --dark:#202522;
  --dark-2:#2d3430;
  --lime:#c9f24a;
  --lime-deep:#8bbd18;
  --orange:#f27e4f;
  --orange-soft:#fff0e9;
  --green-soft:#eef8d0;
  --shadow:0 16px 40px rgba(31,38,33,.08);
  --radius:18px;
  --max:1180px;
}
*{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:1.75}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{background:rgba(244,245,239,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.navbar{height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
.brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
.brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
.brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
.nav-links{display:flex;align-items:center;gap:5px;flex:1}
.nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s ease}
.nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
.nav-cta{white-space:nowrap}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:8px 11px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
.btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
.btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
.btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#39423c;transform:translateY(-2px)}
.btn-outline{border-color:#88918a;background:transparent}
.btn-outline:hover{background:var(--panel);border-color:var(--dark)}
.btn:focus,.nav-links a:focus,summary:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
.hero{padding:72px 0 66px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(32,37,34,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(32,37,34,.035) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.eyebrow:before,.section-kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,5vw,66px);line-height:1.12;letter-spacing:-.065em;margin:18px 0 20px;max-width:720px}
.hero-copy>p{font-size:18px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 24px}
.hero-note{font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:center}
.signal{width:8px;height:8px;background:var(--lime-deep);border-radius:50%;box-shadow:0 0 0 5px #e1f2b5}
.console{background:var(--dark);color:#fff;border-radius:24px;padding:22px;box-shadow:var(--shadow);transform:rotate(1.2deg)}
.console-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #48534b;padding-bottom:17px;color:#bfc9c1;font-size:12px}
.dots{display:flex;gap:6px}.dots i{display:block;width:8px;height:8px;border-radius:50%;background:#79847c}.dots i:first-child{background:var(--orange)}.dots i:last-child{background:var(--lime)}
.console-title{font-size:22px;font-weight:900;margin:28px 0 24px;letter-spacing:-.04em}
.status-row{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-top:1px solid #3d4840;font-size:13px}
.status{color:var(--lime);font-weight:800}
.progress{height:9px;background:#434c46;border-radius:20px;margin:7px 0 25px;overflow:hidden}.progress span{display:block;width:72%;height:100%;background:var(--lime);border-radius:20px}
.console-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.console-cell{background:#2d3530;border-radius:11px;padding:13px}.console-cell b{display:block;font-size:17px;color:var(--lime)}.console-cell small{color:#aeb8b0;font-size:11px}
.section{padding:78px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section-head h2{font-size:clamp(27px,3vw,42px);line-height:1.2;letter-spacing:-.05em;margin:9px 0 0}.section-head p{color:var(--muted);max-width:500px;margin:0}
.download-section{background:#e8eee1}
.download-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}
.download-card,.steps-card,.feature-panel,.faq-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(31,38,33,.04)}
.download-card{padding:28px}.download-card-head{display:flex;justify-content:space-between;gap:18px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:22px}.download-card h3{font-size:25px;margin:5px 0}.tag{display:inline-flex;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}.tag.orange{background:var(--orange-soft);color:#bd5b34}.meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:20px 0 26px}.meta-box{background:#f7f8f4;border-radius:10px;padding:12px}.meta-box small{display:block;color:var(--muted);font-size:12px}.meta-box strong{font-family:ui-monospace,monospace;font-size:14px}.safety{font-size:13px;color:#637066;border-left:3px solid var(--orange);padding-left:12px;margin-top:16px}
.steps-card{padding:25px}.steps-card h3{margin-bottom:17px;font-size:20px}.step{display:grid;grid-template-columns:34px 1fr;gap:12px;padding:15px 0;border-top:1px solid var(--line)}.step-num{width:29px;height:29px;display:grid;place-items:center;border-radius:8px;background:var(--dark);color:var(--lime);font-weight:900;font-size:13px}.step strong{display:block;font-size:15px}.step p{font-size:13px;color:var(--muted);margin:2px 0 0}
.feature-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center}.feature-copy h2{font-size:38px;line-height:1.2;letter-spacing:-.05em;margin:12px 0}.feature-copy>p{color:var(--muted)}.feature-list{list-style:none;padding:0;margin:25px 0}.feature-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-weight:700}.feature-list li:before{content:"✓";display:grid;place-items:center;background:var(--lime);width:22px;height:22px;border-radius:6px;flex:none;font-weight:900}
.dashboard{background:var(--dark);border-radius:22px;padding:18px;color:#fff;min-height:330px;position:relative;overflow:hidden}.dashboard:after{content:"PG";position:absolute;font-size:190px;font-weight:900;color:rgba(201,242,74,.05);right:-15px;bottom:-70px}.dash-bar{display:flex;justify-content:space-between;color:#aeb9b0;font-size:12px;padding-bottom:14px;border-bottom:1px solid #465149}.dash-main{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:20px}.dash-screen{border:1px solid #526157;border-radius:13px;padding:18px;background:#29322c;min-height:190px}.screen-label{color:var(--lime);font-size:12px;font-weight:800}.screen-shape{height:78px;border:2px dashed #66756a;border-radius:9px;margin:19px 0;display:grid;place-items:center;color:#9ea99f;font-size:13px}.dash-side{display:flex;flex-direction:column;gap:10px}.mini-status{background:#303a33;padding:14px;border-radius:11px}.mini-status small{display:block;color:#aeb9b0;font-size:11px}.mini-status b{color:#fff}
.news-section{background:#fff}.news-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:22px}.news-feature{background:var(--dark);color:#fff;border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;justify-content:space-between;min-height:280px}.news-feature h3{font-size:25px;line-height:1.3;margin:16px 0}.news-feature p{color:#b9c4bb;font-size:14px}.news-feature .tag{background:#354337;color:var(--lime)}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:82px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.news-date{font-family:ui-monospace,monospace;font-size:12px;color:var(--muted)}.news-item h3{font-size:16px;margin:0 0 4px;line-height:1.4}.news-item p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.arrow{font-size:22px;color:var(--orange);transition:.2s}.news-item:hover .arrow{transform:translateX(4px)}
.notice{background:var(--orange-soft);border:1px solid #f6c8b6;border-radius:13px;padding:18px 20px;display:flex;gap:14px;align-items:flex-start}.notice b{display:block;margin-bottom:3px}.notice p{margin:0;color:#7d6258;font-size:14px}
.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:50px}.faq-intro h2{font-size:38px;line-height:1.2;letter-spacing:-.05em;margin:12px 0}.faq-intro p{color:var(--muted)}.faq-panel{padding:8px 24px}.faq-panel details{border-bottom:1px solid var(--line);padding:18px 0}.faq-panel details:last-child{border-bottom:0}.faq-panel summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:15px}.faq-panel summary:after{content:"+";color:var(--orange);font-size:22px;line-height:1}.faq-panel details[open] summary:after{content:"−"}.faq-panel details p{color:var(--muted);font-size:14px;margin:12px 25px 0 0}
.cta{padding:58px 0}.cta-box{background:var(--dark);color:#fff;border-radius:22px;padding:38px 44px;display:flex;align-items:center;justify-content:space-between;gap:25px}.cta-box h2{font-size:31px;line-height:1.25;margin:0 0 8px;letter-spacing:-.04em}.cta-box p{color:#b8c2ba;margin:0;font-size:14px}
.site-footer{background:var(--dark);color:#fff;padding:45px 0 24px;border-top:5px solid var(--lime)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px;padding-bottom:38px}.footer-brand{margin-bottom:16px}.footer-copy{color:#aeb9b0;font-size:13px;max-width:350px}.footer-col h3{font-size:14px;margin:0 0 13px;color:var(--lime)}.footer-col a{display:block;color:#bcc6be;font-size:13px;margin:7px 0}.footer-col a:hover{color:#fff}.copyright{border-top:1px solid #465149;padding-top:19px;color:#89958c;font-size:12px;display:flex;justify-content:space-between;gap:15px}
.empty{padding:30px;text-align:center;border:1px dashed #c7cec6;border-radius:14px;color:var(--muted);font-size:14px}
@media(max-width:960px){.brand{min-width:230px}.nav-links a{padding:8px 7px;font-size:13px}.hero-grid{gap:35px}.download-layout,.news-layout{grid-template-columns:1fr}.feature-layout,.faq-layout{grid-template-columns:1fr;gap:25px}.footer-grid{grid-template-columns:1.2fr 1fr 1fr}}
@media(max-width:768px){.container{width:min(var(--max),calc(100% - 28px))}.navbar{height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:14px;right:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-cta{display:none}.hero{padding:48px 0}.hero-grid{grid-template-columns:1fr}.console{transform:none}.section{padding:56px 0}.section-head{display:block}.section-head p{margin-top:12px}.cta-box{display:block;padding:30px 24px}.cta-box .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:520px){h1{font-size:37px}.hero-copy>p{font-size:16px}.hero-actions{display:grid;grid-template-columns:1fr}.btn{width:100%}.console-grid{grid-template-columns:1fr 1fr}.download-card,.steps-card{padding:20px}.download-card-head{display:block}.download-card-head .tag{margin-bottom:7px}.meta-grid{grid-template-columns:1fr 1fr}.feature-copy h2,.faq-intro h2{font-size:30px}.dash-main{grid-template-columns:1fr}.news-item{grid-template-columns:64px 1fr}.news-item .arrow{display:none}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}}

/* roulang page: article */
:root{
    --ink:#202522;
    --muted:#68716c;
    --paper:#f4f5ef;
    --panel:#fff;
    --line:#d9ded7;
    --dark:#202522;
    --dark-2:#2d3430;
    --lime:#c9f24a;
    --lime-deep:#8bbd18;
    --orange:#f27e4f;
    --orange-soft:#fff0e9;
    --green-soft:#eef8d0;
    --shadow:0 16px 40px rgba(31,38,33,.08);
    --radius:18px;
    --max:1180px;
  }
  *,*:before,*:after{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:1.75}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button,input{font:inherit}
  button{cursor:pointer}
  .container{width:min(var(--max),calc(100% - 40px));margin:auto}
  .site-header{background:rgba(244,245,239,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
  .navbar{height:76px;display:flex;align-items:center;gap:28px}
  .brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
  .brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
  .brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
  .brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
  .nav-links{display:flex;align-items:center;gap:5px;flex:1}
  .nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s ease}
  .nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
  .nav-cta{white-space:nowrap}
  .menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:8px 11px}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
  .btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
  .btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
  .btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
  .btn-dark{background:var(--dark);color:#fff}
  .btn-dark:hover{background:#39423c;transform:translateY(-2px)}
  .btn-outline{border-color:#88918a;background:transparent}
  .btn-outline:hover{background:#fff;border-color:var(--dark)}
  .btn:focus,.nav-links a:focus,summary:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
  .article-hero{padding:58px 0 52px;background:#e8eee1;border-bottom:1px solid var(--line)}
  .breadcrumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px;flex-wrap:wrap}
  .breadcrumbs a:hover{color:var(--ink)}
  .crumb-sep{color:#a2aaa4}
  .article-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:end}
  .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em}
  .eyebrow:before,.section-kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
  .article-hero h1{font-size:clamp(32px,5vw,58px);line-height:1.16;letter-spacing:-.06em;margin:14px 0 20px;max-width:850px}
  .article-intro{color:var(--muted);font-size:17px;max-width:760px;margin:0}
  .article-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:24px}
  .tag{display:inline-flex;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}
  .tag.orange{background:var(--orange-soft);color:#bd5b34}
  .status-card{background:var(--dark);color:#fff;border-radius:16px;padding:22px;position:relative;overflow:hidden}
  .status-card:after{content:"";position:absolute;width:90px;height:90px;border:1px solid rgba(201,242,74,.3);border-radius:50%;right:-35px;top:-28px}
  .status-label{color:#aebbb0;font-size:12px}
  .status-card strong{display:block;color:var(--lime);font-size:20px;margin:8px 0 15px}
  .status-line{border-top:1px solid #414a43;padding-top:12px;color:#c8d0ca;font-size:13px}
  .article-area{padding:68px 0}
  .article-layout{display:grid;grid-template-columns:minmax(0,790px) 280px;gap:58px;align-items:start;justify-content:center}
  .article-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(25px,5vw,54px);box-shadow:var(--shadow);min-width:0}
  .article-content h2{font-size:29px;line-height:1.3;margin:34px 0 14px;letter-spacing:-.04em}
  .article-content h3{font-size:21px;line-height:1.4;margin:27px 0 11px}
  .article-content p{margin:0 0 18px;color:#3f4942}
  .article-content ul,.article-content ol{padding-left:25px;margin:12px 0 24px;color:#3f4942}
  .article-content li{padding:4px 0}
  .article-content blockquote{margin:25px 0;padding:18px 20px;background:var(--orange-soft);border-left:4px solid var(--orange);border-radius:0 10px 10px 0;color:#744532}
  .article-content table{width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto}
  .article-content th,.article-content td{padding:12px 15px;border:1px solid var(--line);text-align:left;white-space:nowrap}
  .article-content th{background:var(--green-soft);font-weight:800}
  .article-content img{border-radius:12px;margin:24px auto}
  .article-content a{color:#668d0d;text-decoration:underline;text-underline-offset:3px}
  .article-content .download-box{padding:20px;background:var(--dark);color:#fff;border-radius:14px;margin:30px 0}
  .article-content .download-box p{color:#c5d0c7}
  .side-stack{display:grid;gap:16px;position:sticky;top:100px}
  .side-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:21px}
  .side-card h2{font-size:18px;margin:0 0 14px}
  .side-card ul{list-style:none;margin:0;padding:0}
  .side-card li{border-top:1px solid var(--line);padding:10px 0;font-size:14px;color:var(--muted)}
  .side-card li:first-child{border-top:0}
  .side-card a:hover{color:var(--ink)}
  .side-card .btn{width:100%;margin-top:5px}
  .article-bottom{padding:0 0 78px}
  .return-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:30px 35px;display:flex;justify-content:space-between;align-items:center;gap:24px}
  .return-panel h2{font-size:25px;margin:0 0 5px;letter-spacing:-.04em}
  .return-panel p{margin:0;color:#b9c4bb;font-size:14px}
  .site-footer{background:var(--dark);color:#fff;padding:54px 0 25px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:42px}
  .footer-brand{color:#fff}
  .footer-copy{color:#aeb9b0;font-size:14px;max-width:390px;margin:18px 0 0}
  .footer-col{display:flex;flex-direction:column;gap:9px}
  .footer-col h3{font-size:14px;color:var(--lime);margin:0 0 7px}
  .footer-col a{color:#b9c4bb;font-size:14px;transition:.2s}
  .footer-col a:hover{color:#fff;transform:translateX(3px)}
  .copyright{border-top:1px solid #414a43;padding-top:20px;color:#9eaba1;display:flex;justify-content:space-between;gap:20px;font-size:12px;flex-wrap:wrap}
  @media(max-width:1024px){
    .navbar{gap:13px}.brand{min-width:230px}.nav-links a{padding:8px 7px}
    .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:28px}
  }
  @media(max-width:768px){
    .container{width:min(var(--max),calc(100% - 30px))}
    .navbar{height:68px}.brand{min-width:0;flex:1;font-size:15px}
    .nav-cta{display:none}.menu-toggle{display:block}
    .nav-links{display:none;position:absolute;left:15px;right:15px;top:76px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
    .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
    .article-hero{padding:42px 0}.article-hero-grid{grid-template-columns:1fr;gap:24px}
    .status-card{max-width:360px}.article-layout{grid-template-columns:1fr}.side-stack{position:static;grid-template-columns:1fr 1fr}
    .article-area{padding:42px 0}.return-panel{align-items:flex-start;flex-direction:column}
    .return-panel .btn{width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .footer-grid>div:first-child{grid-column:1/-1}
  }
  @media(max-width:520px){
    .article-hero h1{font-size:34px}.article-content{padding:23px 19px}
    .side-stack,.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
    .copyright{display:block}.copyright span{display:block;margin-bottom:6px}
    .btn{width:100%}.article-meta{align-items:flex-start;flex-direction:column;gap:5px}
  }

/* roulang page: category1 */
:root{
      --ink:#202522;--muted:#68716c;--paper:#f4f5ef;--panel:#fff;
      --line:#d9ded7;--dark:#202522;--dark-2:#2d3430;--lime:#c9f24a;
      --lime-deep:#8bbd18;--orange:#f27e4f;--orange-soft:#fff0e9;
      --green-soft:#eef8d0;--shadow:0 16px 40px rgba(31,38,33,.08);
      --radius:18px;--max:1180px
    }
    *{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:1.75}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{background:rgba(244,245,239,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
    .brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
    .brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
    .brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
    .nav-cta{white-space:nowrap}
    .menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:8px 11px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
    .btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
    .btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
    .btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#39423c;transform:translateY(-2px)}
    .btn-outline{border-color:#88918a;background:transparent}
    .btn-outline:hover{background:var(--panel);border-color:var(--dark)}
    .btn:focus,.nav-links a:focus,summary:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
    .hero{padding:60px 0 64px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(32,37,34,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(32,37,34,.035) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
    h1{font-size:clamp(34px,5vw,62px);line-height:1.12;letter-spacing:-.06em;margin:14px 0 20px;max-width:720px}
    .hero-copy>p{font-size:18px;color:var(--muted);max-width:660px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 20px}
    .hero-note{font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:center}
    .hero-note:before{content:"";width:8px;height:8px;background:var(--lime-deep);border-radius:50%;box-shadow:0 0 0 5px var(--green-soft)}
    .status-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .status-panel:after{content:"";position:absolute;width:160px;height:160px;border:1px solid #506052;border-radius:50%;right:-60px;top:-60px}
    .panel-label{color:var(--lime);font:700 12px ui-monospace,monospace;letter-spacing:.08em}
    .status-panel h2{font-size:25px;line-height:1.3;margin:12px 0 25px;position:relative}
    .status-row{display:flex;justify-content:space-between;gap:14px;align-items:center;padding:13px 0;border-top:1px solid #3d4840;font-size:13px;position:relative}
    .status-row strong{color:#dce6dc;font-weight:700;text-align:right}
    .status-ok{color:var(--lime)!important}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-head h2{font-size:clamp(27px,3vw,42px);line-height:1.2;letter-spacing:-.05em;margin:9px 0 0}
    .section-head p{color:var(--muted);max-width:520px;margin:0}
    .download-section{background:#e8eee1}
    .download-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}
    .download-card,.steps-card,.feature-panel,.faq-panel,.info-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(31,38,33,.04)}
    .download-card{padding:30px}
    .download-card-head{display:flex;justify-content:space-between;gap:18px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:22px}
    .download-card h3{font-size:25px;margin:5px 0}
    .tag{display:inline-flex;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-soft);color:#bd5b34}
    .meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:20px 0 26px}
    .meta-box{background:#f7f8f4;border-radius:10px;padding:12px}
    .meta-box small{display:block;color:var(--muted);font-size:12px}
    .meta-box strong{font-family:ui-monospace,monospace;font-size:14px}
    .safe-note{padding:13px 15px;background:var(--orange-soft);border-left:4px solid var(--orange);color:#6d554c;font-size:13px;margin:22px 0}
    .steps-card{padding:25px}
    .steps-card h3{margin:0 0 16px;font-size:20px}
    .step{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line)}
    .step-num{width:30px;height:30px;display:grid;place-items:center;background:var(--dark);color:var(--lime);border-radius:8px;font:700 13px ui-monospace,monospace;flex:none}
    .step h4{font-size:15px;margin:0 0 3px}
    .step p{color:var(--muted);font-size:13px;line-height:1.55;margin:0}
    .timeline{position:relative;margin-top:25px;padding-left:28px}
    .timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line)}
    .timeline-item{position:relative;padding:0 0 28px}
    .timeline-item:before{content:"";position:absolute;left:-26px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--lime);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--lime-deep)}
    .timeline-item.current:before{background:var(--orange)}
    .timeline-date{font:700 12px ui-monospace,monospace;color:var(--muted)}
    .timeline-item h3{font-size:19px;margin:5px 0}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px;max-width:690px}
    .platform-section{background:#fff}
    .feature-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center}
    .feature-copy h2{font-size:38px;line-height:1.2;letter-spacing:-.05em;margin:12px 0}
    .feature-copy>p{color:var(--muted)}
    .feature-list{list-style:none;padding:0;margin:25px 0}
    .feature-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-weight:700}
    .feature-list li:before{content:"✓";display:grid;place-items:center;background:var(--lime);width:22px;height:22px;border-radius:6px;flex:none;font-weight:900}
    .interface-card{background:var(--dark);border-radius:var(--radius);padding:25px;color:#fff;min-height:300px;position:relative;overflow:hidden}
    .interface-top{display:flex;justify-content:space-between;border-bottom:1px solid #445047;padding-bottom:16px;color:#b9c4bb;font-size:13px}
    .interface-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
    .interface-tile{border:1px solid #465249;border-radius:12px;padding:18px;background:#29322c}
    .interface-tile b{display:block;color:var(--lime);font-size:21px;margin-bottom:4px}
    .interface-tile span{font-size:13px;color:#c1cbc2}
    .news-section{background:#f4f5ef}
    .news-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:32px}
    .news-feature{background:var(--dark);color:#fff;border-radius:var(--radius);padding:28px;min-height:250px;display:flex;flex-direction:column;justify-content:space-between}
    .news-feature h3{font-size:24px;line-height:1.35;margin:15px 0}
    .news-feature p{color:#b9c4bb;font-size:14px;margin:0}
    .news-feature .tag{background:#354337;color:var(--lime)}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:82px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
    .news-item time{font:700 12px ui-monospace,monospace;color:var(--muted)}
    .news-item h3{font-size:16px;margin:0 0 4px;line-height:1.4}
    .news-item p{font-size:13px;color:var(--muted);margin:0}
    .arrow{font-size:22px;color:var(--orange);transition:.2s}
    .news-item:hover .arrow{transform:translateX(4px)}
    .faq-panel{padding:10px 25px}
    details{border-bottom:1px solid var(--line);padding:19px 0}
    details:last-child{border-bottom:0}
    summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:20px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--orange);font-size:20px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 28px 0 0}
    .cta{background:var(--dark);color:#fff;border-radius:var(--radius);padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{font-size:30px;line-height:1.25;margin:0 0 8px}
    .cta p{color:#bac5bc;margin:0}
    .site-footer{background:var(--dark);color:#fff;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:38px}
    .footer-brand{color:#fff;min-width:0}
    .footer-copy{color:#aeb9b0;font-size:14px;max-width:390px;margin:20px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{font-size:14px;color:var(--lime);margin:0 0 8px}
    .footer-col a{color:#c0c9c1;font-size:14px;transition:.2s}
    .footer-col a:hover{color:var(--lime);transform:translateX(3px)}
    .copyright{border-top:1px solid #414b44;padding-top:19px;color:#9da99f;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:960px){
      .navbar{gap:14px}.brand{min-width:235px}.nav-links a{padding:8px 7px}
      .hero-grid,.download-layout,.news-grid{grid-template-columns:1fr}
      .feature-layout{grid-template-columns:1fr;gap:25px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 28px))}
      .navbar{height:68px;justify-content:space-between}
      .brand{min-width:0;font-size:15px}.brand-mark{width:35px;height:35px}
      .menu-toggle{display:block}.nav-cta{display:none}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}.nav-links a{padding:13px 15px}
      .hero{padding:43px 0 50px}.hero-copy>p{font-size:16px}
      .section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .meta-grid{grid-template-columns:1fr 1fr}.cta{display:block;padding:30px 24px}.cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:35px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}
      .download-card{padding:21px}.download-card-head{display:block}.download-card-head .tag{margin-top:12px}
      .meta-grid{grid-template-columns:1fr}.interface-grid{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr auto;gap:5px 12px}.news-item time{grid-column:1/-1}
      .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}.copyright span{display:block;margin-bottom:6px}
    }

/* roulang page: category2 */
:root{
      --ink:#202522;--muted:#68716c;--paper:#f4f5ef;--panel:#fff;
      --line:#d9ded7;--dark:#202522;--dark-2:#2d3430;--lime:#c9f24a;
      --lime-deep:#8bbd18;--orange:#f27e4f;--orange-soft:#fff0e9;
      --green-soft:#eef8d0;--shadow:0 16px 40px rgba(31,38,33,.08);
      --radius:18px;--max:1180px;
    }
    *{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:1.75}
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
    button{font:inherit;cursor:pointer}.container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{background:rgba(244,245,239,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
    .brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
    .brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
    .brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
    .btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
    .btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
    .btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
    .btn-dark{background:var(--dark);color:#fff}.btn-dark:hover{background:#39423c;transform:translateY(-2px)}
    .btn-outline{border-color:#88918a;background:transparent}.btn-outline:hover{background:#fff;border-color:var(--dark)}
    .btn:focus,.nav-links a:focus,summary:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px}
    .hero{padding:66px 0 58px;background:#e8eee1;position:relative;overflow:hidden}
    .hero:after{content:"";position:absolute;right:-100px;top:-130px;width:430px;height:430px;border:1px solid #cbd6c2;border-radius:50%;box-shadow:0 0 0 24px rgba(255,255,255,.25),0 0 0 48px rgba(255,255,255,.18)}
    .crumb{font-size:13px;color:var(--muted);margin-bottom:28px;position:relative;z-index:1}.crumb a{text-decoration:underline;text-underline-offset:3px}
    .hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:68px;align-items:center;position:relative;z-index:1}
    .eyebrow,.kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before,.kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
    h1{font-size:clamp(38px,5vw,64px);line-height:1.12;letter-spacing:-.065em;margin:13px 0 20px;max-width:650px}
    .hero-copy>p{font-size:18px;color:var(--muted);max-width:620px;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 20px}
    .hero-note{font-size:13px;color:var(--muted)}
    .preview{background:var(--dark);color:#fff;border-radius:20px;padding:20px;box-shadow:var(--shadow);min-height:335px}
    .window-bar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #3e4941;padding-bottom:16px;font-size:13px;color:#c2cdc4}
    .lights{display:flex;gap:6px}.lights i{width:8px;height:8px;border-radius:50%;background:var(--orange)}.lights i:nth-child(2){background:var(--lime)}.lights i:nth-child(3){background:#77827a}
    .preview-screen{margin:22px 0;background:#2a322d;border:1px solid #475349;border-radius:12px;padding:22px;min-height:170px;position:relative}
    .screen-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:12px;height:125px}
    .screen-main,.screen-side{border:1px solid #526052;border-radius:8px;padding:12px;background:linear-gradient(135deg,#303b32,#252b27)}
    .screen-main:before{content:"试玩界面预览";display:block;color:var(--lime);font-size:13px;font-weight:800;margin-bottom:20px}
    .screen-line{height:7px;background:#536257;border-radius:5px;margin:9px 0}.screen-line.short{width:58%}.screen-side .screen-line{background:#f27e4f}
    .preview-status{display:flex;justify-content:space-between;color:#aebbb0;font-size:13px}.online{color:var(--lime);font-weight:800}
    .section{padding:78px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-.05em;margin:9px 0 0}.section-head p{color:var(--muted);max-width:510px;margin:0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:var(--shadow)}
    .step{padding:28px 23px;min-height:190px;border-right:1px solid var(--line);position:relative}.step:last-child{border:0}
    .step-num{font-family:ui-monospace,monospace;color:var(--orange);font-weight:900;font-size:14px}.step h3{font-size:20px;margin:15px 0 7px}.step p{font-size:14px;color:var(--muted);margin:0}.step-dot{position:absolute;right:20px;top:29px;width:10px;height:10px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 5px var(--green-soft)}
    .platform-layout{display:grid;grid-template-columns:.84fr 1.16fr;gap:44px;align-items:stretch}
    .panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 8px 24px rgba(31,38,33,.04)}
    .panel h2{font-size:34px;line-height:1.2;letter-spacing:-.05em;margin:10px 0 15px}.panel p{color:var(--muted)}
    .check-list{list-style:none;padding:0;margin:22px 0}.check-list li{display:flex;gap:11px;padding:12px 0;border-bottom:1px solid var(--line);font-weight:700}.check-list li:before{content:"✓";display:grid;place-items:center;background:var(--lime);width:22px;height:22px;border-radius:6px;flex:none}
    .dashboard{background:var(--dark);border-radius:var(--radius);padding:25px;color:#fff;min-height:365px}.dash-head{display:flex;justify-content:space-between;border-bottom:1px solid #465047;padding-bottom:16px}.tag{display:inline-flex;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}.tag.orange{background:var(--orange-soft);color:#bd5b34}
    .dash-content{display:grid;grid-template-columns:1.3fr .7fr;gap:14px;margin-top:20px}.dash-box{border:1px solid #49564b;background:#29322c;border-radius:11px;padding:18px}.dash-box.large{min-height:226px}.dash-box h3{font-size:17px;margin:0 0 22px}.bar{height:8px;border-radius:5px;background:#4a584c;margin:15px 0}.bar em{display:block;height:100%;width:72%;background:var(--lime);border-radius:5px}.mini-button{display:block;border:1px solid #637062;padding:9px;border-radius:7px;color:#c9f24a;text-align:center;font-size:13px;margin-top:14px}
    .notice{margin-top:24px;background:var(--orange-soft);border-left:4px solid var(--orange);padding:17px 20px;border-radius:8px;color:#664638;font-size:14px}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:45px}.faq-intro h2{font-size:38px;line-height:1.2;letter-spacing:-.05em;margin:12px 0}.faq-intro p{color:var(--muted)}
    .faq-panel{padding:8px 25px;background:#fff}details{border-bottom:1px solid var(--line);padding:18px 0}details:last-child{border:0}summary{cursor:pointer;font-weight:800;list-style:none;padding-right:25px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:0;color:var(--orange);font-size:23px;top:-5px}details[open] summary:after{content:"−"}details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .cta{background:var(--dark);color:#fff;border-radius:var(--radius);padding:38px 42px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:32px;line-height:1.2;letter-spacing:-.04em;margin:0 0 8px}.cta p{color:#b9c4bb;margin:0}
    .site-footer{background:var(--dark);color:#fff;padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}.footer-brand{min-width:0;color:#fff}.footer-copy{color:#aeb9b0;max-width:380px;font-size:14px;margin:20px 0 0}.footer-col{display:flex;flex-direction:column;gap:9px}.footer-col h3{font-size:14px;color:var(--lime);margin:0 0 8px}.footer-col a{color:#c3ccc4;font-size:14px}.footer-col a:hover{color:var(--lime)}.copyright{border-top:1px solid #414b43;padding-top:20px;color:#9ea9a0;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:960px){.brand{min-width:230px}.nav-links a{padding:8px 7px}.navbar{gap:14px}.hero-grid,.platform-layout,.faq-layout{grid-template-columns:1fr;gap:30px}.hero{padding-top:45px}.preview{max-width:680px}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 28px))}.navbar{height:68px}.menu-toggle{display:block;margin-left:auto}.nav-cta{display:none}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links a{padding:13px 14px}.brand{min-width:0;font-size:15px}.hero{padding:40px 0}.section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:14px}.cta{display:block;padding:30px 25px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}}
    @media(max-width:520px){h1{font-size:38px}.hero-copy>p{font-size:16px}.hero-actions,.hero-actions .btn{width:100%}.hero-actions .btn{padding:13px}.steps{grid-template-columns:1fr}.step,.step:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.dash-content{grid-template-columns:1fr}.dashboard{padding:18px}.panel{padding:23px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.copyright{display:block}.copyright span{display:block;margin-top:7px}}

/* roulang page: category3 */
:root{
      --ink:#202522;
      --muted:#68716c;
      --paper:#f4f5ef;
      --panel:#fff;
      --line:#d9ded7;
      --dark:#202522;
      --dark-2:#2d3430;
      --lime:#c9f24a;
      --lime-deep:#8bbd18;
      --orange:#f27e4f;
      --orange-soft:#fff0e9;
      --green-soft:#eef8d0;
      --shadow:0 16px 40px rgba(31,38,33,.08);
      --radius:18px;
      --max:1180px;
    }
    *{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:1.75}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{background:rgba(244,245,239,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
    .brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
    .brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
    .brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
    .nav-cta{white-space:nowrap}
    .menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:8px 11px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
    .btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
    .btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
    .btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#39423c;transform:translateY(-2px)}
    .btn-outline{border-color:#88918a;background:transparent}
    .btn-outline:hover{background:var(--panel);border-color:var(--dark)}
    .btn:focus,.nav-links a:focus,summary:focus,.filter-btn:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
    .hero{padding:76px 0 72px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(32,37,34,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(32,37,34,.035) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.13;letter-spacing:-.07em;margin:18px 0}
    h2{font-size:clamp(28px,3.5vw,44px);line-height:1.2;letter-spacing:-.05em}
    .hero-copy p{font-size:18px;color:var(--muted);max-width:650px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 22px}
    .hero-note{font-size:13px;color:var(--muted)}
    .console{background:var(--dark);color:#fff;border-radius:22px;padding:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .console:after{content:"";position:absolute;right:-35px;bottom:-45px;width:170px;height:170px;border:1px solid rgba(201,242,74,.3);border-radius:50%}
    .console-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #3d4840;padding-bottom:18px}
    .console-label{font-family:ui-monospace,monospace;font-size:12px;color:#b9c4bb}
    .live{color:var(--lime);font-size:12px;font-weight:800}
    .console h3{font-size:25px;margin:25px 0 22px}
    .status-row{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-top:1px solid #3d4840;font-size:13px}
    .status-row span{color:#b9c4bb}
    .status-row strong{font-family:ui-monospace,monospace;font-size:12px;color:var(--lime);text-align:right}
    .section{padding:80px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-head h2{margin:9px 0 0}
    .section-head p{color:var(--muted);max-width:500px;margin:0}
    .filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px;background:#e8eee1;border:1px solid var(--line);border-radius:14px;margin-bottom:30px}
    .filter-label{font-size:13px;font-weight:900;margin-right:8px}
    .filter-btn{border:1px solid #c9d2c4;background:var(--panel);color:#59635c;border-radius:8px;padding:7px 13px;font-size:13px;transition:.2s}
    .filter-btn:hover,.filter-btn.active{background:var(--dark);border-color:var(--dark);color:var(--lime)}
    .news-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}
    .news-feature{background:var(--dark);color:#fff;border-radius:var(--radius);padding:32px;min-height:360px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow)}
    .news-feature .tag{background:#354337;color:var(--lime)}
    .tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-soft);color:#bd5b34}
    .news-feature h3{font-size:28px;line-height:1.35;margin:18px 0 10px}
    .news-feature p{color:#b9c4bb;font-size:14px;margin:0}
    .feature-foot{display:flex;justify-content:space-between;align-items:end;gap:15px;color:#b9c4bb;font-size:13px}
    .news-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:8px 25px}
    .news-item{display:grid;grid-template-columns:76px 1fr auto;gap:18px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-date{font-family:ui-monospace,monospace;color:var(--muted);font-size:12px}
    .news-item h3{font-size:17px;line-height:1.4;margin:0 0 5px}
    .news-item p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .arrow{font-size:22px;color:var(--orange);transition:.2s}
    .news-item:hover .arrow{transform:translateX(4px)}
    .timeline-section{background:#e8eee1}
    .timeline{position:relative;max-width:900px;margin:10px auto 0}
    .timeline:before{content:"";position:absolute;left:108px;top:12px;bottom:12px;width:2px;background:#cbd5c7}
    .timeline-item{display:grid;grid-template-columns:110px 1fr;gap:28px;position:relative;padding:17px 0}
    .timeline-item:before{content:"";position:absolute;left:103px;top:29px;width:12px;height:12px;background:var(--lime);border:3px solid var(--dark);border-radius:50%;z-index:1}
    .timeline-date{font-family:ui-monospace,monospace;font-size:12px;color:var(--muted);padding-top:7px}
    .timeline-content{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 23px}
    .timeline-content h3{font-size:18px;margin:4px 0 7px}
    .timeline-content p{font-size:14px;color:var(--muted);margin:0}
    .info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .info-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s}
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b8c7af}
    .icon-box{width:43px;height:43px;border-radius:12px;background:var(--green-soft);display:grid;place-items:center;font-weight:900;color:#5d7b16;margin-bottom:18px}
    .info-card h3{font-size:19px;margin:0 0 8px}
    .info-card p{font-size:14px;color:var(--muted);margin:0}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:55px;align-items:start}
    .faq-intro p{color:var(--muted)}
    .faq-panel{padding:8px 24px}
    details{border-bottom:1px solid var(--line);padding:17px 0}
    details:last-child{border-bottom:0}
    summary{cursor:pointer;font-weight:800;list-style:none;position:relative;padding-right:30px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--orange);font-size:22px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 0 2px}
    .cta{background:var(--dark);color:#fff;border-radius:22px;padding:43px 48px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta h2{margin:0 0 8px;font-size:32px}
    .cta p{color:#b9c4bb;margin:0}
    .site-footer{background:var(--dark);color:#fff;padding:52px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:45px;padding-bottom:42px}
    .footer-brand{min-width:0;color:#fff}
    .footer-copy{color:#aeb9b0;font-size:14px;max-width:390px;margin:20px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{font-size:14px;color:var(--lime);margin:0 0 10px}
    .footer-col a{color:#c4cdc6;font-size:14px;transition:.2s}
    .footer-col a:hover{color:var(--lime);transform:translateX(3px)}
    .copyright{border-top:1px solid #3d4840;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#8e9b92;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:15px}.brand{min-width:230px}.nav-links a{padding:8px 8px}
      .hero-grid{gap:35px}.news-layout,.faq-layout{gap:25px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 28px))}
      .navbar{height:68px;justify-content:space-between}.brand{min-width:0;font-size:15px}
      .menu-toggle{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:76px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-cta{display:none}
      .hero{padding:48px 0}.hero-grid,.news-layout,.faq-layout{grid-template-columns:1fr}
      h1{font-size:42px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:13px}
      .info-grid{grid-template-columns:1fr}.timeline:before{left:8px}.timeline-item{grid-template-columns:1fr;gap:7px;padding-left:31px}.timeline-item:before{left:2px;top:48px}.timeline-date{padding:0}
      .cta{display:block;padding:32px 25px}.cta .btn{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:7px}
    }
    @media(max-width:480px){
      .hero-actions,.hero-actions .btn{width:100%}.hero-actions .btn{padding:13px}
      h1{font-size:35px}.hero-copy p{font-size:16px}.console{padding:22px 18px}
      .filter-bar{align-items:flex-start}.filter-label{width:100%;margin:0}.news-list{padding:5px 17px}.news-item{grid-template-columns:1fr auto;gap:5px 12px}.news-date{grid-column:1/-1}.news-item p{font-size:12px}
      .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
    }

/* roulang page: category4 */
:root{
      --ink:#202522;
      --muted:#68716c;
      --paper:#f4f5ef;
      --panel:#fff;
      --line:#d9ded7;
      --dark:#202522;
      --dark-2:#2d3430;
      --lime:#c9f24a;
      --lime-deep:#8bbd18;
      --orange:#f27e4f;
      --orange-soft:#fff0e9;
      --green-soft:#eef8d0;
      --shadow:0 16px 40px rgba(31,38,33,.08);
      --radius:18px;
      --max:1180px;
    }
    *{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:1.75}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{font-weight:900;letter-spacing:-.045em}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 40px));margin:auto}
    .site-header{background:rgba(244,245,239,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:272px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
    .brand-mark{width:39px;height:39px;border-radius:11px;background:var(--dark);display:grid;place-items:center;position:relative;flex:none}
    .brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--lime);border-radius:4px;transform:rotate(45deg)}
    .brand-mark:after{content:"";position:absolute;width:5px;height:5px;background:var(--orange);border-radius:50%;right:6px;top:7px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{padding:9px 12px;border-radius:9px;color:#515a54;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus,.nav-links a.active{color:var(--ink);background:var(--green-soft)}
    .nav-cta{white-space:nowrap}
    .menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:8px 11px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
    .btn-primary{background:var(--lime);color:var(--dark);box-shadow:0 7px 0 #a4ca32}
    .btn-primary:hover{background:#d8fb67;transform:translateY(-2px);box-shadow:0 9px 0 #a4ca32}
    .btn-primary:active{transform:translateY(2px);box-shadow:0 4px 0 #a4ca32}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#39423c;transform:translateY(-2px)}
    .btn-outline{border-color:#88918a;background:transparent}
    .btn-outline:hover{background:var(--panel);border-color:var(--dark)}
    .btn:focus,.nav-links a:focus,summary:focus,.chapter-link:focus{outline:3px solid rgba(139,189,24,.35);outline-offset:3px}
    .page-top{padding:34px 0 0}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin:0}
    .breadcrumb a:hover{color:var(--ink)}
    .slash{color:var(--orange)}
    .hero{padding:42px 0 66px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(32,37,34,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(32,37,34,.035) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:62px;align-items:center}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#58645d;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:23px;height:3px;border-radius:4px;background:var(--orange)}
    h1{font-size:clamp(38px,5vw,66px);line-height:1.08;margin:17px 0 20px;max-width:700px}
    .hero-copy>p{font-size:18px;color:var(--muted);max-width:650px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 22px}
    .hero-note{font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:center}
    .hero-note:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime-deep);box-shadow:0 0 0 5px var(--green-soft)}
    .guide-console{background:var(--dark);color:#fff;border-radius:20px;padding:25px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .guide-console:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(201,242,74,.22);border-radius:50%;right:-70px;bottom:-85px}
    .console-bar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #3d4840;padding-bottom:17px;color:#bcc8bd;font-size:12px}
    .lights{display:flex;gap:6px}.lights i{width:8px;height:8px;border-radius:50%;background:var(--orange)}.lights i:nth-child(2){background:var(--lime)}.lights i:nth-child(3){background:#9aa59b}
    .console-title{font-size:23px;margin:28px 0 19px}
    .console-line{display:flex;justify-content:space-between;gap:15px;border-top:1px solid #3d4840;padding:13px 0;font-size:13px;color:#b9c4bb}
    .console-line strong{color:var(--lime);font-family:ui-monospace,monospace;text-align:right}
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-head h2{font-size:clamp(28px,3.4vw,44px);line-height:1.15;margin:10px 0 0}
    .section-head p{color:var(--muted);max-width:510px;margin:0}
    .guide-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
    .chapter-nav{background:var(--dark);color:#fff;border-radius:var(--radius);padding:22px;position:sticky;top:100px}
    .chapter-nav h3{font-size:19px;margin-bottom:18px}
    .chapter-link{display:flex;align-items:center;gap:10px;border-top:1px solid #3d4840;padding:13px 4px;color:#bac5bc;font-size:14px;transition:.2s}
    .chapter-link span{display:grid;place-items:center;width:24px;height:24px;border-radius:7px;background:#354137;color:var(--lime);font-size:12px;font-weight:900}
    .chapter-link:hover,.chapter-link.active{color:#fff}.chapter-link.active span{background:var(--lime);color:var(--dark)}
    .guide-content{display:grid;gap:17px}
    .step-card,.tip-card,.faq-panel,.download-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(31,38,33,.04)}
    .step-card{padding:26px 28px;display:grid;grid-template-columns:55px 1fr;gap:19px}
    .step-number{width:45px;height:45px;border-radius:12px;background:var(--green-soft);display:grid;place-items:center;color:#607e17;font-weight:900;font-family:ui-monospace,monospace}
    .step-card h3{font-size:22px;margin:0 0 8px}
    .step-card p{color:var(--muted);margin-bottom:10px}
    .step-list{margin:0;padding-left:20px;color:#4f5a52}
    .step-list li{padding:3px 0}
    .tip-card{padding:19px 22px;border-left:4px solid var(--orange);background:var(--orange-soft)}
    .tip-card strong{display:block;margin-bottom:3px}
    .tip-card p{margin:0;color:#745244;font-size:14px}
    .download-section{background:#e8eee1}
    .download-layout{display:grid;grid-template-columns:1fr .8fr;gap:24px}
    .download-box{padding:28px}
    .download-box h3{font-size:26px;margin:7px 0 10px}
    .download-box p{color:var(--muted)}
    .tag{display:inline-flex;padding:4px 9px;border-radius:6px;background:var(--green-soft);color:#5d7b16;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-soft);color:#bd5b34}
    .meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
    .meta-box{background:#f7f8f4;border-radius:10px;padding:12px;min-width:0}
    .meta-box small{display:block;color:var(--muted);font-size:12px}
    .meta-box strong{font-family:ui-monospace,monospace;font-size:14px;overflow-wrap:anywhere}
    .notice-box{background:var(--dark);color:#fff;border-radius:var(--radius);padding:26px}
    .notice-box h3{font-size:22px;margin-bottom:13px}
    .notice-box p,.notice-box li{color:#bdc8bf;font-size:14px}
    .notice-box ul{padding-left:19px;margin-bottom:22px}
    .faq-section{background:#fff}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:45px;align-items:start}
    .faq-intro h2{font-size:39px;line-height:1.2;margin:10px 0 14px}
    .faq-intro p{color:var(--muted)}
    .faq-panel{overflow:hidden}
    details{border-bottom:1px solid var(--line);padding:0 22px}
    details:last-child{border-bottom:0}
    summary{list-style:none;cursor:pointer;padding:20px 0;font-weight:800;display:flex;justify-content:space-between;gap:15px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";font-size:23px;color:var(--orange);line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;padding:0 30px 20px 0;margin:0}
    .cta{padding:58px 0}
    .cta-box{background:var(--dark);color:#fff;border-radius:var(--radius);padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px;position:relative;overflow:hidden}
    .cta-box:before{content:"";position:absolute;right:30%;top:-90px;width:220px;height:220px;border:1px solid rgba(201,242,74,.2);border-radius:50%}
    .cta-box h2{font-size:clamp(27px,3vw,39px);margin:0 0 8px;position:relative}
    .cta-box p{color:#bdc8bf;margin:0;position:relative}
    .cta-box .btn{position:relative;flex:none}
    .site-footer{background:var(--dark);color:#fff;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:55px;padding-bottom:40px}
    .footer-brand{color:#fff;margin-bottom:18px}
    .footer-copy{color:#aebbb0;font-size:14px;max-width:390px;margin:0}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{font-size:15px;margin:3px 0 8px;color:var(--lime)}
    .footer-col a{color:#b8c4ba;font-size:14px;transition:.2s}
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .copyright{border-top:1px solid #3d4840;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#91a094;font-size:12px}
    @media(max-width:1024px){
      .brand{min-width:230px}.nav-links a{padding:8px 8px}
      .hero-grid{gap:35px}.guide-layout{grid-template-columns:235px 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 30px))}
      .navbar{height:68px;gap:12px}.brand{min-width:0;flex:1;font-size:15px}
      .nav-cta{display:none}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:15px;right:15px;top:76px;padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:13px 14px}
      .hero{padding:35px 0 50px}.hero-grid,.download-layout,.faq-layout{grid-template-columns:1fr;gap:28px}
      h1{font-size:42px}.section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .chapter-nav{position:static}.guide-layout{grid-template-columns:1fr}
      .chapter-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 15px}.chapter-nav h3{grid-column:1/-1}
      .cta-box{display:block;padding:30px}.cta-box .btn{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}
      .copyright{display:block}.copyright span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}.brand{font-size:13px}.brand-mark{width:34px;height:34px}
      h1{font-size:36px}.hero-copy>p{font-size:16px}.hero-actions .btn{width:100%}
      .guide-console,.download-box,.step-card{padding:21px}.step-card{grid-template-columns:1fr;gap:12px}
      .meta-grid{grid-template-columns:1fr 1fr}.meta-box:last-child{grid-column:1/-1}
      .chapter-nav{grid-template-columns:1fr}.faq-intro h2{font-size:32px}
      .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
      .cta-box .btn{width:100%}
    }

/* 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}