/* roulang page: index */
:root{
      --ink:#17211f;
      --muted:#64716c;
      --soft:#f5f4ee;
      --paper:#fffefa;
      --line:#dbe2da;
      --lime:#b6ec32;
      --lime-deep:#548400;
      --lime-pale:#eff9cf;
      --coral:#ef7856;
      --coral-pale:#fff0eb;
      --dark:#172420;
      --dark-soft:#23342e;
      --white:#ffffff;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);
      --container:1200px;
      --transition:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--soft);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;line-height:1.7;overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    :focus-visible{outline:3px solid rgba(84,132,0,.52);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{
      position:sticky;top:0;z-index:50;background:rgba(255,254,250,.94);
      border-bottom:1px solid rgba(219,226,218,.9);backdrop-filter:blur(14px);
    }
    .topline{height:5px;background:var(--lime)}
    .header-inner{min-height:82px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:39px;height:39px;flex:none;border-radius:12px;background:var(--dark);color:var(--lime);
      display:grid;place-items:center;font-size:20px;font-weight:900;box-shadow:inset 0 0 0 1px rgba(255,255,255,.09);
    }
    .brand-copy{line-height:1.22}
    .brand-name{display:block;font-size:14px;font-weight:850;letter-spacing:-.25px}
    .brand-sub{display:block;margin-top:3px;color:var(--lime-deep);font-size:10px;font-weight:800;letter-spacing:1.2px}
    .main-nav{display:flex;align-items:center;justify-content:center;gap:5px;flex:1}
    .main-nav a{padding:9px 11px;border-radius:8px;color:#43504b;font-size:14px;font-weight:750;transition:var(--transition)}
    .main-nav a:hover,.main-nav a.active{background:var(--lime-pale);color:#304b00}
    .header-actions{display:flex;gap:8px;align-items:center}
    .btn{
      min-height:43px;padding:10px 16px;border:1px solid transparent;border-radius:10px;
      display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;
      font-size:14px;line-height:1.2;transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
    }
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,33,31,.13)}
    .btn:active{transform:translateY(0);box-shadow:none}
    .btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}
    .btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--dark);font-size:24px}
    .hero{padding:54px 0 30px;position:relative}
    .hero-shell{
      background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:clamp(28px,5vw,64px);
      min-height:510px;position:relative;overflow:hidden;box-shadow:var(--shadow);
      display:grid;grid-template-columns:minmax(0,1.18fr) minmax(330px,.82fr);gap:46px;align-items:center;
    }
    .hero-shell:before{
      content:"";position:absolute;width:530px;height:530px;right:-230px;top:-250px;border-radius:50%;
      border:72px solid var(--lime-pale);opacity:.9;
    }
    .hero-shell:after{
      content:"";position:absolute;left:0;bottom:0;width:100%;height:9px;
      background:repeating-linear-gradient(90deg,var(--lime) 0 30px,transparent 30px 45px);
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#496e00;font-size:12px;font-weight:850;letter-spacing:.7px}
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--lime-deep);display:block}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:740px;margin:15px 0 18px;font-size:clamp(34px,4.3vw,61px);line-height:1.16;letter-spacing:-2.4px}
    .hero-copy p{max-width:670px;color:#526059;font-size:17px;line-height:1.85}
    .hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}
    .hero-notes{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px}
    .hero-notes span{border-left:3px solid var(--coral);padding-left:9px;color:#5b6861;font-size:12px;font-weight:700}
    .access-console{position:relative;z-index:1;background:var(--dark);color:var(--white);border-radius:18px;padding:24px;box-shadow:0 20px 35px rgba(23,36,32,.22)}
    .console-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:19px;border-bottom:1px solid rgba(255,255,255,.14)}
    .console-head strong{font-size:18px;line-height:1.35}
    .official-badge{flex:none;padding:5px 8px;border:1px solid rgba(182,236,50,.7);border-radius:6px;color:var(--lime);font-size:10px;font-weight:900;letter-spacing:.8px}
    .console-grid{margin:19px 0;display:grid;gap:12px}
    .console-row{display:flex;gap:12px;align-items:center;padding:11px;border-radius:10px;background:rgba(255,255,255,.07)}
    .console-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:8px;background:rgba(182,236,50,.15);color:var(--lime);font-weight:900}
    .console-row small{display:block;color:#afbbb5;font-size:11px;line-height:1.3}
    .console-row b{display:block;font-size:13px}
    .access-console .btn{width:100%;margin-top:2px}
    .shortcut-wrap{padding:20px 0 53px}
    .shortcut-bar{display:grid;grid-template-columns:repeat(4,1fr);background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 6px 18px rgba(23,33,31,.04)}
    .shortcut{display:flex;gap:12px;align-items:center;padding:19px 20px;border-right:1px solid var(--line);transition:background var(--transition)}
    .shortcut:last-child{border:0}
    .shortcut:hover{background:var(--lime-pale)}
    .shortcut-icon{width:37px;height:37px;flex:none;border-radius:10px;display:grid;place-items:center;background:#f0f2ed;color:var(--lime-deep);font-weight:900}
    .shortcut h3{margin:0 0 1px;font-size:15px;line-height:1.35}
    .shortcut p{margin:0;color:var(--muted);font-size:12px;line-height:1.45}
    .section{padding:70px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-kicker{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:.7px}
    h2{margin:6px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-1.2px}
    .section-intro{max-width:360px;margin:0;color:var(--muted);font-size:14px;text-align:right}
    .news-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:22px}
    .featured-post,.news-list{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 22px rgba(23,33,31,.04)}
    .featured-post{padding:30px;display:flex;min-height:360px;flex-direction:column;position:relative;overflow:hidden}
    .featured-post:after{content:"01";position:absolute;right:22px;bottom:-35px;color:var(--lime-pale);font-size:135px;line-height:1;font-weight:900;letter-spacing:-8px}
    .post-meta{display:flex;align-items:center;gap:10px;color:#78847f;font-size:12px;position:relative;z-index:1}
    .tag{display:inline-flex;padding:3px 8px;border-radius:5px;background:var(--coral-pale);color:#b84d32;font-size:11px;font-weight:850}
    .featured-post h3{position:relative;z-index:1;margin:20px 0 12px;max-width:490px;font-size:27px;line-height:1.35;letter-spacing:-.7px}
    .featured-post p{position:relative;z-index:1;color:var(--muted);font-size:14px}
    .text-link{position:relative;z-index:1;display:inline-flex;gap:7px;align-items:center;margin-top:auto;color:var(--lime-deep);font-size:14px;font-weight:900}
    .text-link:hover{text-decoration:underline}
    .news-list{padding:5px 24px}
    .news-item{display:block;padding:18px 0;border-bottom:1px solid var(--line);transition:padding var(--transition)}
    .news-item:last-child{border:0}
    .news-item:hover{padding-left:7px}
    .news-item h3{margin:7px 0 4px;font-size:16px;line-height:1.45}
    .news-item p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}
    .empty-state{min-height:280px;display:grid;place-items:center;text-align:center;color:var(--muted);padding:30px}
    .download-section{padding:30px 0 70px}
    .download-panel{display:grid;grid-template-columns:1fr .95fr;gap:40px;align-items:center;border-radius:23px;padding:clamp(28px,5vw,56px);background:var(--dark);color:var(--white);overflow:hidden;position:relative}
    .download-panel:before{content:"";position:absolute;right:-80px;bottom:-100px;width:360px;height:360px;border:45px solid rgba(182,236,50,.1);border-radius:50%}
    .download-copy,.download-card{position:relative;z-index:1}
    .download-copy .section-kicker{color:var(--lime)}
    .download-copy h2{font-size:clamp(28px,3.3vw,43px)}
    .download-copy p{max-width:570px;color:#c5d0ca;margin:16px 0 23px}
    .device-tags{display:flex;gap:8px;flex-wrap:wrap}
    .device-tags span{padding:5px 10px;border:1px solid rgba(255,255,255,.2);border-radius:6px;color:#dce7e1;font-size:12px}
    .download-card{background:var(--white);color:var(--ink);padding:22px;border-radius:16px}
    .download-card h3{margin:0 0 12px;font-size:20px}
    .version-line{display:flex;justify-content:space-between;padding:10px 0;border-top:1px solid var(--line);font-size:13px}
    .version-line span{color:var(--muted)}
    .download-actions{display:grid;grid-template-columns:1fr 104px;gap:12px;margin-top:17px}
    .qr-box{min-height:104px;border:1px dashed #a5b0a7;border-radius:10px;background:repeating-linear-gradient(45deg,#f4f5f1,#f4f5f1 7px,#fafbf8 7px,#fafbf8 14px);display:grid;place-items:center;text-align:center;padding:7px;color:#657169;font-size:11px;line-height:1.35}
    .steps{padding:70px 0;background:#eceee8;border-top:1px solid #dfe4dc;border-bottom:1px solid #dfe4dc}
    .step-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}
    .step-intro p{color:var(--muted);margin-top:16px}
    .step-list{counter-reset:step;display:grid;gap:11px}
    .step-item{counter-increment:step;display:grid;grid-template-columns:46px 1fr;gap:13px;align-items:center;padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:12px}
    .step-item:before{content:"0" counter(step);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--lime-pale);color:var(--lime-deep);font-size:12px;font-weight:900}
    .step-item h3{margin:0;font-size:15px}
    .step-item p{margin:2px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
    .category-strip{padding:70px 0}
    .category-rail{display:grid;grid-template-columns:1.05fr .95fr .95fr 1.05fr;gap:12px}
    .category-link{min-height:180px;padding:22px;display:flex;flex-direction:column;border-radius:15px;border:1px solid var(--line);background:var(--paper);transition:var(--transition)}
    .category-link:nth-child(2){background:var(--lime-pale)}
    .category-link:nth-child(3){background:var(--coral-pale)}
    .category-link:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9c8b8}
    .category-no{font-size:12px;font-weight:900;color:var(--coral)}
    .category-link h3{margin:20px 0 5px;font-size:21px}
    .category-link p{margin:0;color:var(--muted);font-size:13px}
    .category-link em{margin-top:auto;padding-top:12px;color:var(--lime-deep);font-style:normal;font-size:13px;font-weight:850}
    .faq-section{padding:70px 0}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-copy p{color:var(--muted);margin-top:16px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line)}
    summary{list-style:none;padding:18px 30px 18px 0;position:relative;font-size:16px;font-weight:800;cursor:pointer}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:2px;top:14px;color:var(--lime-deep);font-size:24px;font-weight:400}
    details[open] summary:after{content:"−"}
    .faq-answer{padding:0 28px 18px 0;color:var(--muted);font-size:14px;line-height:1.8}
    .bottom-cta{padding:0 0 74px}
    .cta-box{padding:38px clamp(25px,4vw,52px);display:flex;justify-content:space-between;align-items:center;gap:25px;border-radius:18px;background:var(--lime);color:#253700}
    .cta-box h2{margin:0;font-size:30px}
    .cta-box p{margin:6px 0 0;font-size:14px}
    .cta-box .btn{background:var(--dark);color:var(--white);white-space:nowrap}
    .site-footer{background:var(--dark);color:#d4ddd7;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr repeat(2,.7fr);gap:40px;padding-bottom:35px}
    .footer-brand .brand-name{color:var(--white);font-size:16px}
    .footer-brand p{max-width:420px;margin:14px 0 0;color:#9caaa3;font-size:13px}
    .footer-title{margin:0 0 12px;color:var(--lime);font-size:12px;letter-spacing:.7px}
    .footer-links{display:grid;gap:7px}
    .footer-links a{font-size:13px;color:#c8d3cd;transition:color var(--transition)}
    .footer-links a:hover{color:var(--lime)}
    .footer-bottom{padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:15px;color:#88968f;font-size:12px}
    .footer-bottom a:hover{color:var(--lime)}
    .back-top{position:fixed;right:20px;bottom:20px;z-index:20;width:43px;height:43px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--lime-deep);box-shadow:var(--shadow);display:grid;place-items:center;font-weight:900;opacity:0;visibility:hidden;transition:var(--transition)}
    .back-top.show{opacity:1;visibility:visible}
    @media (max-width:1024px){
      .header-inner{gap:12px}.brand{min-width:205px}.main-nav a{padding:8px 7px;font-size:13px}
      .header-actions .btn{padding:10px 11px}.hero-shell{grid-template-columns:1fr;gap:30px}.access-console{max-width:600px}
      .category-rail{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .header-inner{min-height:70px;justify-content:space-between}.brand{min-width:0;max-width:calc(100% - 52px)}
      .brand-name{font-size:12px}.brand-sub{font-size:9px}.brand-mark{width:35px;height:35px}
      .menu-toggle{display:block}.header-actions{display:none}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;padding:12px 16px 16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 14px 25px rgba(23,33,31,.1)}
      .main-nav.open{display:grid}.main-nav a{padding:12px;text-align:left}
      .hero{padding-top:28px}.hero-shell{padding:30px 24px;border-radius:18px;min-height:0}h1{font-size:38px;letter-spacing:-1.5px}
      .hero-copy p{font-size:15px}.shortcut-wrap{padding-bottom:34px}.shortcut-bar{grid-template-columns:repeat(2,1fr)}.shortcut:nth-child(2){border-right:0}.shortcut:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .section,.category-strip,.faq-section{padding:52px 0}.section-head{display:block}.section-intro{text-align:left;margin-top:12px}
      .news-layout,.download-panel,.step-grid,.faq-layout{grid-template-columns:1fr;gap:25px}.featured-post{min-height:290px}.download-panel{padding:30px 23px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.cta-box{align-items:flex-start;flex-direction:column}.cta-box .btn{width:100%}
    }
    @media (max-width:520px){
      h1{font-size:32px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn{width:100%}
      .shortcut-bar{grid-template-columns:1fr}.shortcut,.shortcut:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.shortcut:last-child{border-bottom:0}
      .featured-post{padding:23px}.featured-post h3{font-size:23px}.news-list{padding:4px 18px}.download-actions{grid-template-columns:1fr}.qr-box{min-height:82px}
      .category-rail{grid-template-columns:1fr}.category-link{min-height:145px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block;line-height:2}
    }

/* roulang page: article */
:root{
      --ink:#17211f;
      --muted:#64716c;
      --soft:#f5f4ee;
      --paper:#fffefa;
      --line:#dbe2da;
      --lime:#b6ec32;
      --lime-deep:#548400;
      --lime-pale:#eff9cf;
      --coral:#ef7856;
      --coral-pale:#fff0eb;
      --dark:#172420;
      --dark-soft:#23342e;
      --white:#ffffff;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);
      --container:1200px;
      --transition:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--soft);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:hover{text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,254,250,.94);
      border-bottom:1px solid rgba(219,226,218,.9);
      backdrop-filter:blur(14px);
    }
    .header-inner{
      min-height:82px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:11px;
      min-width:245px;
    }
    .brand-mark{
      width:39px;
      height:39px;
      flex:none;
      border-radius:12px;
      background:var(--dark);
      color:var(--lime);
      display:grid;
      place-items:center;
      font-size:20px;
      font-weight:900;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.09);
    }
    .brand-copy{line-height:1.22}
    .brand-name{
      display:block;
      font-size:14px;
      font-weight:850;
      letter-spacing:-.25px;
    }
    .brand-sub{
      display:block;
      margin-top:3px;
      color:var(--lime-deep);
      font-size:10px;
      font-weight:800;
      letter-spacing:1.2px;
    }
    .main-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:5px;
      flex:1;
    }
    .main-nav a{
      padding:9px 11px;
      border-radius:8px;
      color:#43504b;
      font-size:14px;
      font-weight:750;
      transition:var(--transition);
    }
    .main-nav a:hover,
    .main-nav a.active{
      background:var(--lime-pale);
      color:#304b00;
    }
    .header-actions{
      display:flex;
      gap:8px;
      align-items:center;
    }
    .btn{
      min-height:43px;
      padding:10px 16px;
      border:1px solid transparent;
      border-radius:10px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      font-weight:800;
      font-size:14px;
      line-height:1.2;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 9px 18px rgba(23,33,31,.13);
    }
    .btn:active{transform:translateY(0);box-shadow:none}
    .btn:focus-visible,
    .main-nav a:focus-visible,
    .footer-links a:focus-visible,
    .text-link:focus-visible{
      outline:3px solid rgba(239,120,86,.42);
      outline-offset:3px;
    }
    .btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}
    .btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{
      display:none;
      border:0;
      background:transparent;
      width:44px;
      height:44px;
      color:var(--dark);
      font-size:24px;
    }

    .article-hero{
      padding:50px 0 34px;
      position:relative;
    }
    .article-hero-shell{
      position:relative;
      overflow:hidden;
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:24px;
      padding:clamp(28px,5vw,62px);
      box-shadow:var(--shadow);
    }
    .article-hero-shell:before{
      content:"";
      position:absolute;
      width:390px;
      height:390px;
      right:-180px;
      top:-205px;
      border:52px solid var(--lime-pale);
      border-radius:50%;
      opacity:.85;
    }
    .article-hero-shell:after{
      content:"";
      position:absolute;
      left:0;
      right:0;
      bottom:0;
      height:8px;
      background:repeating-linear-gradient(90deg,var(--lime) 0 30px,transparent 30px 45px);
    }
    .breadcrumb{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      margin-bottom:22px;
      color:#7b8781;
      font-size:12px;
    }
    .breadcrumb a{color:var(--lime-deep);font-weight:750}
    .breadcrumb a:hover{text-decoration:underline}
    .breadcrumb-separator{color:#b0bab2}
    .eyebrow{
      position:relative;
      z-index:1;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#496e00;
      font-size:12px;
      font-weight:850;
      letter-spacing:.7px;
    }
    .eyebrow i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--lime-deep);
      display:block;
    }
    .article-title{
      position:relative;
      z-index:1;
      max-width:900px;
      margin:15px 0 18px;
      font-size:clamp(32px,5vw,58px);
      line-height:1.2;
      letter-spacing:-1.8px;
      font-weight:900;
    }
    .article-excerpt{
      position:relative;
      z-index:1;
      max-width:790px;
      margin:0;
      color:#59665f;
      font-size:17px;
      line-height:1.85;
    }
    .article-meta{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:10px 22px;
      align-items:center;
      margin-top:26px;
      color:#748078;
      font-size:13px;
    }
    .tag{
      display:inline-flex;
      padding:4px 9px;
      border-radius:5px;
      background:var(--coral-pale);
      color:#b84d32;
      font-size:11px;
      font-weight:850;
    }
    .meta-item{display:inline-flex;align-items:center;gap:6px}
    .meta-dot{width:5px;height:5px;background:var(--coral);border-radius:50%}

    .article-section{padding:38px 0 82px}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,800px) 280px;
      gap:54px;
      align-items:start;
    }
    .article-content{
      min-width:0;
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:clamp(24px,4vw,48px);
      box-shadow:0 8px 22px rgba(23,33,31,.04);
    }
    .article-content h2{
      margin:34px 0 14px;
      padding-left:15px;
      border-left:5px solid var(--lime);
      font-size:27px;
      line-height:1.35;
      letter-spacing:-.5px;
    }
    .article-content h3{
      margin:28px 0 10px;
      font-size:20px;
      line-height:1.45;
    }
    .article-content p{
      margin:0 0 18px;
      color:#46534d;
      font-size:16px;
      line-height:2;
    }
    .article-content ul,
    .article-content ol{
      margin:12px 0 24px;
      padding-left:25px;
      color:#46534d;
    }
    .article-content li{padding:4px 0;line-height:1.85}
    .article-content blockquote{
      margin:26px 0;
      padding:18px 21px;
      border-left:4px solid var(--coral);
      border-radius:0 10px 10px 0;
      background:var(--coral-pale);
      color:#6e493f;
    }
    .article-content img{
      width:100%;
      margin:26px 0;
      border-radius:12px;
      border:1px solid var(--line);
    }
    .article-content table{
      width:100%;
      margin:22px 0;
      border-collapse:collapse;
      color:#46534d;
      font-size:14px;
    }
    .article-content th,
    .article-content td{
      border:1px solid var(--line);
      padding:11px 13px;
      text-align:left;
    }
    .article-content th{background:var(--lime-pale);color:#304b00}
    .article-content code{
      padding:2px 6px;
      border-radius:5px;
      background:#edf0eb;
      color:#47584e;
      font-size:.9em;
    }
    .notice-box{
      margin-top:32px;
      padding:18px 20px;
      border:1px solid #d6e7ad;
      border-radius:12px;
      background:#f6fbe9;
      color:#50613f;
      font-size:14px;
    }
    .not-found{
      text-align:center;
      padding:48px 20px;
    }
    .not-found h2{
      border:0;
      padding:0;
      margin:0 0 12px;
    }
    .not-found p{margin-bottom:24px}
    .article-sidebar{
      position:sticky;
      top:108px;
      display:grid;
      gap:16px;
    }
    .side-card{
      padding:21px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--paper);
      box-shadow:0 8px 22px rgba(23,33,31,.04);
    }
    .side-card.dark{
      background:var(--dark);
      color:var(--white);
      border-color:var(--dark);
    }
    .side-label{
      margin:0 0 11px;
      color:var(--coral);
      font-size:11px;
      font-weight:900;
      letter-spacing:.8px;
    }
    .side-card.dark .side-label{color:var(--lime)}
    .side-card h3{
      margin:0 0 10px;
      font-size:19px;
      line-height:1.4;
    }
    .side-card p{
      margin:0 0 17px;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }
    .side-card.dark p{color:#bcc8c0}
    .side-links{display:grid;gap:8px}
    .side-links a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding:9px 0;
      border-bottom:1px solid var(--line);
      color:#45534c;
      font-size:13px;
      font-weight:750;
    }
    .side-links a:last-child{border-bottom:0}
    .side-links a:hover{color:var(--lime-deep)}
    .side-card.dark .side-links a{border-color:rgba(255,255,255,.12);color:#edf4ef}
    .side-card.dark .side-links a:hover{color:var(--lime)}

    .article-bottom{
      margin-top:24px;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .bottom-panel{
      min-width:0;
      padding:25px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:var(--paper);
    }
    .bottom-panel h2{
      margin:0 0 15px;
      font-size:20px;
      line-height:1.4;
    }
    .related-list{display:grid;gap:0}
    .related-item{
      display:block;
      padding:14px 0;
      border-bottom:1px solid var(--line);
      transition:padding var(--transition);
    }
    .related-item:last-child{border-bottom:0}
    .related-item:hover{padding-left:6px}
    .related-item span{
      display:block;
      margin-bottom:4px;
      color:var(--lime-deep);
      font-size:11px;
      font-weight:850;
    }
    .related-item strong{
      display:block;
      font-size:15px;
      line-height:1.5;
    }
    .related-item small{color:#829088;font-size:12px}
    .action-list{display:grid;gap:10px}
    .action-list .btn{width:100%}

    .site-footer{
      padding:52px 0 22px;
      background:var(--dark);
      color:var(--white);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.6fr 1fr 1fr;
      gap:40px;
      padding-bottom:38px;
      border-bottom:1px solid rgba(255,255,255,.13);
    }
    .footer-brand .brand-name{
      max-width:360px;
      color:var(--lime);
      font-size:16px;
      line-height:1.5;
    }
    .footer-brand p{
      max-width:410px;
      margin:13px 0 0;
      color:#b9c5be;
      font-size:13px;
      line-height:1.8;
    }
    .footer-title{
      margin:0 0 14px;
      color:#f5f8f3;
      font-size:14px;
      font-weight:850;
    }
    .footer-links{display:grid;gap:8px}
    .footer-links a{
      color:#b9c5be;
      font-size:13px;
      transition:color var(--transition);
    }
    .footer-links a:hover{color:var(--lime)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:19px;
      color:#8f9f96;
      font-size:12px;
    }
    .footer-bottom a{color:#c6d2ca}
    .footer-bottom a:hover{color:var(--lime)}

    @media (max-width:1024px){
      .header-inner{gap:14px}
      .brand{min-width:210px}
      .header-actions .btn-outline{display:none}
      .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:28px}
      .article-title{font-size:46px}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .header-inner{min-height:70px}
      .brand{min-width:0;flex:1}
      .brand-name{font-size:12px}
      .brand-sub{font-size:9px}
      .brand-mark{width:35px;height:35px;border-radius:10px}
      .menu-toggle{display:block}
      .main-nav{
        display:none;
        position:absolute;
        left:18px;
        right:18px;
        top:72px;
        padding:10px;
        background:var(--paper);
        border:1px solid var(--line);
        border-radius:14px;
        box-shadow:var(--shadow);
      }
      .main-nav.is-open{display:grid}
      .main-nav a{padding:12px 14px}
      .header-actions{display:none}
      .article-hero{padding:28px 0 22px}
      .article-hero-shell{padding:28px 22px 34px;border-radius:18px}
      .article-title{font-size:34px;letter-spacing:-.9px}
      .article-excerpt{font-size:15px}
      .article-layout{display:block}
      .article-sidebar{
        position:static;
        margin-top:20px;
        grid-template-columns:1fr 1fr;
      }
      .article-section{padding:25px 0 60px}
      .article-content{padding:25px 21px}
      .article-content p{font-size:15px;line-height:1.9}
      .article-bottom{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:grid;gap:10px}
    }
    @media (max-width:520px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .brand-name{max-width:205px;line-height:1.25}
      .article-title{font-size:29px}
      .article-meta{gap:9px 14px;font-size:12px}
      .article-sidebar{grid-template-columns:1fr}
      .article-content h2{font-size:23px}
      .article-content h3{font-size:18px}
      .article-content table{display:block;overflow-x:auto;white-space:nowrap}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }

/* roulang page: category1 */
:root{
      --ink:#17211f;
      --muted:#64716c;
      --soft:#f5f4ee;
      --paper:#fffefa;
      --line:#dbe2da;
      --lime:#b6ec32;
      --lime-deep:#548400;
      --lime-pale:#eff9cf;
      --coral:#ef7856;
      --coral-pale:#fff0eb;
      --dark:#172420;
      --dark-soft:#23342e;
      --white:#ffffff;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);
      --container:1200px;
      --transition:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--soft);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
    button,input{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    h1,h2,h3,p{margin-top:0}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,254,250,.94);
      border-bottom:1px solid rgba(219,226,218,.9);
      backdrop-filter:blur(14px);
    }
    .header-inner{min-height:82px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:39px;height:39px;flex:none;border-radius:12px;background:var(--dark);color:var(--lime);
      display:grid;place-items:center;font-size:20px;font-weight:900;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.09);
    }
    .brand-copy{line-height:1.22}
    .brand-name{display:block;font-size:14px;font-weight:850;letter-spacing:-.25px}
    .brand-sub{display:block;margin-top:3px;color:var(--lime-deep);font-size:10px;font-weight:800;letter-spacing:1.2px}
    .main-nav{display:flex;align-items:center;justify-content:center;gap:5px;flex:1}
    .main-nav a{
      padding:9px 11px;border-radius:8px;color:#43504b;font-size:14px;font-weight:750;
      transition:var(--transition)
    }
    .main-nav a:hover,.main-nav a.active{background:var(--lime-pale);color:#304b00}
    .header-actions{display:flex;gap:8px;align-items:center}
    .btn{
      min-height:43px;padding:10px 16px;border:1px solid transparent;border-radius:10px;
      display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;
      font-size:14px;line-height:1.2;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition)
    }
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,33,31,.13)}
    .btn:active{transform:translateY(0);box-shadow:none}
    .btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}
    .btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--dark);font-size:24px}
    .page-hero{padding:54px 0 28px}
    .hero-panel{
      position:relative;
      overflow:hidden;
      background:var(--dark);
      color:var(--white);
      border-radius:24px;
      padding:clamp(30px,5vw,64px);
      box-shadow:var(--shadow);
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      width:420px;height:420px;
      right:-130px;top:-190px;
      border:65px solid rgba(182,236,50,.15);
      border-radius:50%;
    }
    .hero-panel:after{
      content:"";
      position:absolute;
      right:42px;bottom:35px;
      width:110px;height:110px;
      background-image:radial-gradient(var(--lime) 1.5px,transparent 1.5px);
      background-size:13px 13px;
      opacity:.38;
    }
    .hero-content{position:relative;z-index:1;max-width:780px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      color:var(--lime);font-size:12px;font-weight:850;letter-spacing:.7px
    }
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block}
    .hero-panel h1{
      margin:18px 0 18px;
      max-width:850px;
      font-size:clamp(32px,5vw,60px);
      line-height:1.15;
      letter-spacing:-1.8px;
    }
    .hero-panel p{
      max-width:700px;
      margin-bottom:26px;
      color:#c6d0ca;
      font-size:17px;
      line-height:1.85;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:11px}
    .hero-actions .btn-outline{color:var(--white);border-color:#6b7e74}
    .hero-actions .btn-outline:hover{color:var(--ink);background:var(--white)}
    .hero-stats{
      position:relative;z-index:1;
      display:flex;flex-wrap:wrap;gap:10px;
      margin-top:38px;
    }
    .hero-stat{
      min-width:155px;
      padding:13px 15px;
      border-left:3px solid var(--coral);
      background:rgba(255,255,255,.07);
      border-radius:0 9px 9px 0;
    }
    .hero-stat strong{display:block;color:var(--lime);font-size:17px}
    .hero-stat span{display:block;color:#aebbb4;font-size:12px}
    .section{padding:64px 0}
    .section-head{
      display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px
    }
    .section-kicker{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:.7px}
    .section-title{margin:5px 0 0;font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-.8px}
    .section-intro{max-width:380px;margin:0;color:var(--muted);font-size:14px;text-align:right}
    .quick-nav{
      display:grid;
      grid-template-columns:1.25fr 1fr 1fr 1fr;
      gap:12px;
    }
    .quick-item{
      position:relative;
      min-height:150px;
      padding:22px;
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 8px 22px rgba(23,33,31,.04);
      transition:var(--transition);
    }
    .quick-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#bbd883}
    .quick-item:first-child{background:var(--lime-pale)}
    .quick-number{color:var(--coral);font-size:12px;font-weight:900}
    .quick-item h3{margin:12px 0 5px;font-size:19px}
    .quick-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    .quick-arrow{position:absolute;right:20px;bottom:18px;color:var(--lime-deep);font-size:20px;font-weight:900}
    .split-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:22px;align-items:stretch}
    .feature-card,.info-card{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 22px rgba(23,33,31,.04)
    }
    .feature-card{padding:30px;position:relative;overflow:hidden}
    .feature-card:after{
      content:"01";position:absolute;right:18px;bottom:-33px;color:var(--lime-pale);
      font-size:135px;line-height:1;font-weight:900;letter-spacing:-8px
    }
    .tag{
      display:inline-flex;padding:3px 8px;border-radius:5px;background:var(--coral-pale);
      color:#b84d32;font-size:11px;font-weight:850
    }
    .feature-card h3{position:relative;z-index:1;margin:20px 0 12px;font-size:25px;line-height:1.35}
    .feature-card p{position:relative;z-index:1;color:var(--muted);font-size:14px}
    .text-link{position:relative;z-index:1;display:inline-flex;gap:7px;align-items:center;color:var(--lime-deep);font-size:14px;font-weight:900}
    .text-link:hover{text-decoration:underline}
    .news-stack{display:grid;gap:10px}
    .news-row{
      display:grid;grid-template-columns:110px 1fr auto;gap:18px;align-items:center;
      padding:19px 21px;background:var(--paper);border:1px solid var(--line);border-radius:12px;
      transition:var(--transition)
    }
    .news-row:hover{transform:translateX(4px);border-color:#b9d580;box-shadow:0 8px 20px rgba(23,33,31,.06)}
    .news-date{color:var(--muted);font-size:12px}
    .news-row h3{margin:0 0 3px;font-size:16px;line-height:1.45}
    .news-row p{margin:0;color:var(--muted);font-size:12px;line-height:1.5}
    .news-row .text-link{font-size:12px;white-space:nowrap}
    .path-section{background:var(--lime-pale)}
    .path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .path-card{padding:24px;background:var(--paper);border:1px solid #dce8bd;border-radius:var(--radius-sm)}
    .path-card strong{display:flex;align-items:center;gap:10px;font-size:18px}
    .path-card strong b{
      width:31px;height:31px;display:grid;place-items:center;border-radius:9px;
      background:var(--dark);color:var(--lime);font-size:13px
    }
    .path-card p{margin:13px 0 0;color:var(--muted);font-size:13px}
    .topics{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
    .topic-board{padding:28px;background:var(--dark);color:var(--white);border-radius:var(--radius);position:relative;overflow:hidden}
    .topic-board:before{content:"CN";position:absolute;right:25px;top:0;color:rgba(182,236,50,.12);font-size:130px;font-weight:900;line-height:1}
    .topic-board h3{position:relative;z-index:1;margin:0 0 16px;font-size:24px}
    .topic-tags{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px}
    .topic-tags span{padding:8px 11px;border:1px solid #52685c;border-radius:8px;color:#d6dfd8;font-size:13px}
    .topic-note{position:relative;z-index:1;margin:22px 0 0;color:#aebbb4;font-size:13px}
    .topic-links{display:grid;gap:10px}
    .topic-link{
      display:flex;justify-content:space-between;gap:15px;align-items:center;
      padding:17px 19px;background:var(--paper);border:1px solid var(--line);border-radius:11px;
      font-weight:800;transition:var(--transition)
    }
    .topic-link:hover{border-color:#aeca76;background:#fbfff0}
    .topic-link span{color:var(--coral);font-size:12px}
    .faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:30px;align-items:start}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{display:grid;gap:10px}
    .faq-item{background:var(--paper);border:1px solid var(--line);border-radius:11px;overflow:hidden}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:17px 20px;font-weight:800;display:flex;justify-content:space-between;gap:15px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--lime-deep);font-size:21px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 20px 18px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
    .cta{
      padding:36px 42px;background:var(--coral);color:var(--white);border-radius:var(--radius);
      display:flex;align-items:center;justify-content:space-between;gap:25px
    }
    .cta h2{margin:0 0 7px;font-size:28px;line-height:1.3}
    .cta p{margin:0;color:#ffe7df;font-size:14px}
    .cta .btn{background:var(--white);color:var(--ink)}
    .site-footer{padding:45px 0 24px;background:var(--dark);color:var(--white)}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:38px;padding-bottom:35px}
    .footer-brand .brand-name{font-size:16px;color:var(--lime)}
    .footer-brand p{max-width:430px;margin:14px 0 0;color:#aebbb4;font-size:13px}
    .footer-title{margin:0 0 13px;font-size:14px;color:var(--white)}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#aebbb4;font-size:13px;transition:var(--transition)}
    .footer-links a:hover{color:var(--lime)}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:18px;padding-top:20px;
      border-top:1px solid #3c5148;color:#91a199;font-size:12px
    }
    .footer-bottom a:hover{color:var(--lime)}
    @media(max-width:1024px){
      .header-inner{gap:12px}
      .brand{min-width:220px}
      .header-actions .btn-outline{display:none}
      .quick-nav{grid-template-columns:repeat(2,1fr)}
      .split-layout,.topics,.faq-grid{grid-template-columns:1fr}
      .section-intro{text-align:left}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .header-inner{min-height:72px;position:relative}
      .brand{min-width:0;flex:1}
      .brand-name{font-size:12px}
      .brand-sub{font-size:9px}
      .main-nav{
        display:none;position:absolute;left:0;right:0;top:72px;
        padding:10px;background:var(--paper);border:1px solid var(--line);
        border-top:0;box-shadow:var(--shadow);flex-direction:column;align-items:stretch
      }
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .header-actions{display:none}
      .menu-toggle{display:block}
      .page-hero{padding:25px 0 16px}
      .hero-panel{border-radius:18px;padding:31px 23px}
      .hero-panel h1{font-size:35px;letter-spacing:-1px}
      .hero-panel p{font-size:15px}
      .hero-stat{min-width:calc(50% - 5px)}
      .section{padding:45px 0}
      .section-head{display:block;margin-bottom:20px}
      .section-intro{margin-top:10px}
      .news-row{grid-template-columns:1fr;gap:7px}
      .news-row .text-link{justify-self:start}
      .path-grid{grid-template-columns:1fr}
      .cta{display:block;padding:28px 23px}
      .cta .btn{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:8px}
    }
    @media(max-width:520px){
      .quick-nav{grid-template-columns:1fr}
      .hero-panel h1{font-size:30px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .hero-stats{display:grid;grid-template-columns:1fr 1fr}
      .hero-stat{min-width:0}
      .feature-card{padding:23px}
      .topic-board{padding:23px}
      .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category2 */
:root{
      --ink:#17211f;
      --muted:#64716c;
      --soft:#f5f4ee;
      --paper:#fffefa;
      --line:#dbe2da;
      --lime:#b6ec32;
      --lime-deep:#548400;
      --lime-pale:#eff9cf;
      --coral:#ef7856;
      --coral-pale:#fff0eb;
      --dark:#172420;
      --dark-soft:#23342e;
      --white:#ffffff;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);
      --container:1200px;
      --transition:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--soft);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
    button,input{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,254,250,.95);
      border-bottom:1px solid rgba(219,226,218,.9);
      backdrop-filter:blur(14px);
    }
    .header-inner{min-height:82px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:39px;height:39px;flex:none;border-radius:12px;background:var(--dark);color:var(--lime);
      display:grid;place-items:center;font-size:20px;font-weight:900;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.09)
    }
    .brand-copy{line-height:1.22}
    .brand-name{display:block;font-size:14px;font-weight:850;letter-spacing:-.25px}
    .brand-sub{display:block;margin-top:3px;color:var(--lime-deep);font-size:10px;font-weight:800;letter-spacing:1.2px}
    .main-nav{display:flex;align-items:center;justify-content:center;gap:5px;flex:1}
    .main-nav a{
      padding:9px 11px;border-radius:8px;color:#43504b;font-size:14px;font-weight:750;
      transition:var(--transition)
    }
    .main-nav a:hover,.main-nav a.active{background:var(--lime-pale);color:#304b00}
    .header-actions{display:flex;gap:8px;align-items:center}
    .btn{
      min-height:43px;padding:10px 16px;border:1px solid transparent;border-radius:10px;
      display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;
      font-size:14px;line-height:1.2;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition)
    }
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,33,31,.13)}
    .btn:active{transform:translateY(0);box-shadow:none}
    .btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}
    .btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--dark);font-size:24px}
    .page-hero{padding:52px 0 32px}
    .hero-panel{
      position:relative;
      overflow:hidden;
      background:var(--dark);
      color:var(--white);
      border-radius:24px;
      padding:clamp(30px,5vw,64px);
      box-shadow:var(--shadow);
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      right:-130px;
      top:-160px;
      width:430px;
      height:430px;
      border:70px solid rgba(182,236,50,.16);
      border-radius:50%;
    }
    .hero-panel:after{
      content:"02";
      position:absolute;
      right:45px;
      bottom:-48px;
      color:rgba(182,236,50,.12);
      font-size:170px;
      line-height:1;
      font-weight:900;
    }
    .hero-content{position:relative;z-index:1;max-width:780px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--lime);
      font-size:12px;font-weight:850;letter-spacing:.7px
    }
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block}
    h1,h2,h3,p{margin-top:0}
    h1{
      margin:17px 0 18px;
      max-width:760px;
      font-size:clamp(34px,5vw,62px);
      line-height:1.15;
      letter-spacing:-2px;
      font-weight:900;
    }
    .hero-content p{max-width:700px;color:#c8d2cd;font-size:17px;line-height:1.85}
    .hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}
    .hero-panel .btn-outline{border-color:#60706a;color:#fff}
    .hero-panel .btn-outline:hover{background:#fff;color:var(--dark)}
    .hero-notes{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px}
    .hero-notes span{border-left:3px solid var(--coral);padding-left:9px;color:#c8d2cd;font-size:12px;font-weight:700}
    .section{padding:70px 0}
    .section-head{
      display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px
    }
    .section-kicker{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:.7px}
    .section-title{margin:6px 0 0;font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-1px}
    .section-intro{max-width:390px;margin:0;color:var(--muted);font-size:14px;text-align:right}
    .guide-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px;align-items:start}
    .guide-index{
      position:sticky;top:108px;
      padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:0 8px 22px rgba(23,33,31,.04)
    }
    .guide-index h3{font-size:17px;margin-bottom:14px}
    .index-link{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      padding:13px 12px;border-bottom:1px solid var(--line);color:#53615b;font-size:14px;font-weight:750;
      transition:var(--transition)
    }
    .index-link:last-child{border-bottom:0}
    .index-link:hover,.index-link.current{color:#304b00;background:var(--lime-pale);border-radius:8px}
    .index-link span{color:var(--coral);font-size:12px}
    .guide-main{display:grid;gap:18px}
    .guide-card{
      display:grid;grid-template-columns:76px minmax(0,1fr) auto;gap:20px;align-items:center;
      padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:0 8px 22px rgba(23,33,31,.04);
      transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)
    }
    .guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#c6d8bd}
    .guide-number{
      width:64px;height:64px;border-radius:14px;display:grid;place-items:center;
      background:var(--lime-pale);color:var(--lime-deep);font-size:24px;font-weight:900
    }
    .guide-card h3{margin:9px 0 5px;font-size:20px;line-height:1.35}
    .guide-card p{margin:0;color:var(--muted);font-size:14px}
    .guide-card .btn{white-space:nowrap}
    .tag{
      display:inline-flex;padding:3px 8px;border-radius:5px;background:var(--coral-pale);
      color:#b84d32;font-size:11px;font-weight:850
    }
    .feature-band{
      background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:28px;
      box-shadow:var(--shadow)
    }
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);margin-top:20px}
    .feature-item{background:var(--paper);padding:22px}
    .feature-icon{
      width:38px;height:38px;border-radius:10px;background:var(--dark);color:var(--lime);
      display:grid;place-items:center;font-weight:900;margin-bottom:16px
    }
    .feature-item h3{font-size:17px;margin-bottom:7px}
    .feature-item p{margin:0;color:var(--muted);font-size:13px}
    .steps-section{background:var(--dark);color:var(--white)}
    .steps-section .section-kicker{color:var(--lime)}
    .steps-section .section-intro{color:#b9c7c0}
    .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step-card{position:relative;padding:23px;background:var(--dark-soft);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm)}
    .step-card:not(:last-child):after{
      content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);
      color:var(--lime);font-size:23px;font-weight:900;z-index:2
    }
    .step-no{color:var(--lime);font-size:12px;font-weight:900;letter-spacing:1px}
    .step-card h3{margin:13px 0 7px;font-size:17px}
    .step-card p{margin:0;color:#b9c7c0;font-size:13px}
    .faq-wrap{max-width:900px}
    .faq-item{background:var(--paper);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
    .faq-item summary{
      list-style:none;padding:19px 22px;font-weight:800;cursor:pointer;display:flex;justify-content:space-between;gap:20px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--lime-deep);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14px}
    .cta-panel{
      display:flex;justify-content:space-between;align-items:center;gap:24px;
      background:var(--lime);border-radius:20px;padding:30px 34px;color:#1f3000
    }
    .cta-panel h2{margin-bottom:6px;font-size:26px;line-height:1.3}
    .cta-panel p{margin:0;color:#496300;font-size:14px}
    .cta-panel .btn-dark{background:var(--dark)}
    .site-footer{background:var(--dark);color:#d7e0da;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px}
    .footer-brand .brand-name{color:#fff;font-size:16px;line-height:1.5}
    .footer-brand p{max-width:440px;color:#aebcb4;font-size:13px;margin:14px 0 0}
    .footer-title{font-size:14px;color:var(--lime);margin-bottom:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#b7c4bd;font-size:13px;transition:var(--transition)}
    .footer-links a:hover{color:var(--lime);padding-left:4px}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);
      padding-top:20px;margin-top:40px;color:#91a098;font-size:12px
    }
    .footer-bottom a:hover{color:var(--lime)}
    @media(max-width:1024px){
      .header-inner{gap:12px}
      .brand{min-width:220px}
      .header-actions .btn{padding:9px 11px}
      .guide-layout{grid-template-columns:230px minmax(0,1fr)}
      .step-grid{grid-template-columns:repeat(2,1fr)}
      .step-card:nth-child(2):after{display:none}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .header-inner{min-height:70px;position:relative}
      .brand{min-width:0;flex:1}
      .brand-name{font-size:12px}
      .brand-sub{font-size:9px}
      .main-nav{
        display:none;position:absolute;left:0;right:0;top:70px;
        background:var(--paper);border:1px solid var(--line);border-top:0;
        padding:10px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)
      }
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .header-actions{display:none}
      .menu-toggle{display:block}
      .page-hero{padding:28px 0 16px}
      h1{font-size:clamp(32px,9vw,48px);letter-spacing:-1px}
      .hero-content p{font-size:15px}
      .section{padding:48px 0}
      .section-head{display:block}
      .section-intro{text-align:left;margin-top:10px}
      .guide-layout{display:block}
      .guide-index{position:static;margin-bottom:18px}
      .guide-card{grid-template-columns:54px minmax(0,1fr);gap:15px;padding:19px}
      .guide-number{width:54px;height:54px;font-size:20px}
      .guide-card .btn{grid-column:2;justify-self:start}
      .feature-grid{grid-template-columns:1fr}
      .step-grid{grid-template-columns:1fr}
      .step-card:not(:last-child):after{content:"↓";right:50%;top:auto;bottom:-19px;transform:translateX(50%)}
      .cta-panel{display:block;padding:25px}
      .cta-panel .btn{margin-top:19px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .hero-panel{padding:28px 21px;border-radius:18px}
      .hero-actions .btn{width:100%}
      .hero-notes{display:grid;gap:9px}
      .guide-card h3{font-size:17px}
      .guide-card p{font-size:13px}
      .feature-band{padding:20px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }

/* roulang page: category3 */
:root{
      --ink:#17211f;
      --muted:#64716c;
      --soft:#f5f4ee;
      --paper:#fffefa;
      --line:#dbe2da;
      --lime:#b6ec32;
      --lime-deep:#548400;
      --lime-pale:#eff9cf;
      --coral:#ef7856;
      --coral-pale:#fff0eb;
      --dark:#172420;
      --dark-soft:#23342e;
      --white:#ffffff;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);
      --container:1200px;
      --transition:180ms ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--soft);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible,input:focus-visible{
      outline:3px solid rgba(84,132,0,.35);
      outline-offset:3px;
    }
    button,input{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,254,250,.94);
      border-bottom:1px solid rgba(219,226,218,.9);
      backdrop-filter:blur(14px);
    }
    .header-inner{
      min-height:82px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:11px;
      min-width:245px;
    }
    .brand-mark{
      width:39px;
      height:39px;
      flex:none;
      border-radius:12px;
      background:var(--dark);
      color:var(--lime);
      display:grid;
      place-items:center;
      font-size:20px;
      font-weight:900;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.09);
    }
    .brand-copy{line-height:1.22}
    .brand-name{
      display:block;
      font-size:14px;
      font-weight:850;
      letter-spacing:-.25px;
    }
    .brand-sub{
      display:block;
      margin-top:3px;
      color:var(--lime-deep);
      font-size:10px;
      font-weight:800;
      letter-spacing:1.2px;
    }
    .main-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:5px;
      flex:1;
    }
    .main-nav a{
      padding:9px 11px;
      border-radius:8px;
      color:#43504b;
      font-size:14px;
      font-weight:750;
      transition:var(--transition);
    }
    .main-nav a:hover,
    .main-nav a.active{
      background:var(--lime-pale);
      color:#304b00;
    }
    .header-actions{
      display:flex;
      gap:8px;
      align-items:center;
    }
    .btn{
      min-height:43px;
      padding:10px 16px;
      border:1px solid transparent;
      border-radius:10px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      font-weight:800;
      font-size:14px;
      line-height:1.2;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 9px 18px rgba(23,33,31,.13);
    }
    .btn:active{transform:translateY(0);box-shadow:none}
    .btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}
    .btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{
      display:none;
      border:0;
      background:transparent;
      width:44px;
      height:44px;
      color:var(--dark);
      font-size:24px;
    }

    .page-hero{
      padding:42px 0 28px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      background:var(--dark);
      color:var(--white);
      border-radius:24px;
      padding:clamp(28px,5vw,58px);
      box-shadow:var(--shadow);
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      right:-95px;
      top:-150px;
      width:390px;
      height:390px;
      border:58px solid rgba(182,236,50,.16);
      border-radius:50%;
    }
    .hero-panel:after{
      content:"APP / 03";
      position:absolute;
      right:32px;
      bottom:22px;
      color:rgba(182,236,50,.28);
      font-size:12px;
      font-weight:900;
      letter-spacing:2px;
    }
    .breadcrumb{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin:0 0 24px;
      color:#aab8b1;
      font-size:13px;
    }
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb .current{color:var(--lime)}
    .hero-content{
      position:relative;
      z-index:1;
      max-width:820px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--lime);
      font-size:12px;
      font-weight:850;
      letter-spacing:.8px;
    }
    .eyebrow i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--lime);
      display:block;
    }
    h1,h2,h3,p{overflow-wrap:anywhere}
    h1{
      margin:14px 0 18px;
      max-width:850px;
      font-size:clamp(32px,5vw,60px);
      line-height:1.13;
      letter-spacing:-2px;
      font-weight:900;
    }
    .hero-content p{
      max-width:720px;
      margin:0;
      color:#d0d9d4;
      font-size:17px;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:11px;
      margin-top:28px;
    }
    .hero-actions .btn-outline{
      color:var(--white);
      border-color:#65756d;
    }
    .hero-actions .btn-outline:hover{
      color:var(--ink);
      background:var(--white);
    }

    .section{padding:68px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:20px;
      margin-bottom:28px;
    }
    .section-kicker{
      color:var(--coral);
      font-size:12px;
      font-weight:900;
      letter-spacing:.7px;
    }
    h2{
      margin:5px 0 0;
      font-size:clamp(25px,3vw,38px);
      line-height:1.25;
      letter-spacing:-1px;
      font-weight:900;
    }
    .section-intro{
      max-width:400px;
      margin:0;
      color:var(--muted);
      font-size:14px;
      text-align:right;
    }

    .download-layout{
      display:grid;
      grid-template-columns:minmax(0,.88fr) minmax(420px,1.12fr);
      gap:24px;
      align-items:stretch;
    }
    .device-panel,
    .install-panel,
    .version-card,
    .check-card,
    .faq-card,
    .index-card{
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 8px 22px rgba(23,33,31,.04);
    }
    .device-panel{
      padding:31px;
      position:relative;
      overflow:hidden;
    }
    .device-panel:after{
      content:"";
      position:absolute;
      right:-44px;
      bottom:-66px;
      width:190px;
      height:190px;
      border-radius:50%;
      background:var(--lime-pale);
    }
    .device-panel h3,
    .install-panel h3,
    .version-card h3,
    .check-card h3,
    .faq-card h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.35;
      font-weight:900;
    }
    .device-panel p{color:var(--muted);font-size:14px;margin:0 0 24px}
    .device-tabs{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:9px;
      margin-bottom:25px;
    }
    .device-tab{
      min-height:54px;
      border:1px solid var(--line);
      border-radius:10px;
      background:#fff;
      color:#42504a;
      font-weight:800;
      transition:var(--transition);
    }
    .device-tab:hover,
    .device-tab.active{
      border-color:var(--lime-deep);
      background:var(--lime-pale);
      color:#304b00;
    }
    .device-specs{
      position:relative;
      z-index:1;
      display:grid;
      gap:13px;
      margin:0;
    }
    .spec-row{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-bottom:12px;
      border-bottom:1px dashed var(--line);
      font-size:14px;
    }
    .spec-row span{color:var(--muted)}
    .spec-row strong{font-weight:850;text-align:right}
    .install-panel{
      padding:31px;
      background:var(--dark);
      color:var(--white);
      border-color:var(--dark);
    }
    .install-panel > p{margin:0;color:#bac9c0;font-size:14px}
    .download-box{
      display:grid;
      grid-template-columns:145px 1fr;
      gap:24px;
      align-items:center;
      margin-top:24px;
      padding:19px;
      border-radius:13px;
      background:var(--dark-soft);
      border:1px solid rgba(182,236,50,.18);
    }
    .qr-placeholder{
      aspect-ratio:1;
      display:grid;
      place-items:center;
      position:relative;
      border-radius:10px;
      background:#f8fbe9;
      color:#526b00;
      border:8px solid #fff;
      text-align:center;
      font-size:12px;
      font-weight:850;
    }
    .qr-placeholder:before,
    .qr-placeholder:after{
      content:"";
      position:absolute;
      border:3px solid var(--lime-deep);
      width:30px;
      height:30px;
    }
    .qr-placeholder:before{left:10px;top:10px}
    .qr-placeholder:after{right:10px;bottom:10px}
    .download-box h4{margin:0 0 7px;font-size:19px}
    .download-box p{margin:0 0 15px;color:#bbc9c0;font-size:13px;line-height:1.65}
    .mini-note{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:15px;
    }
    .mini-note span{
      padding:4px 8px;
      border-radius:6px;
      color:#c6d1ca;
      background:rgba(255,255,255,.07);
      font-size:11px;
    }

    .steps-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
    }
    .step-card{
      min-height:195px;
      padding:24px;
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:var(--radius);
      transition:var(--transition);
    }
    .step-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:#c7d69f;
    }
    .step-number{
      display:inline-grid;
      place-items:center;
      width:37px;
      height:37px;
      margin-bottom:22px;
      border-radius:10px;
      background:var(--lime);
      color:#294400;
      font-size:15px;
      font-weight:900;
    }
    .step-card h3{margin:0 0 8px;font-size:18px}
    .step-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}

    .info-layout{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
    }
    .version-card,
    .check-card{padding:28px}
    .version-top{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:flex-start;
      margin-bottom:20px;
    }
    .tag{
      display:inline-flex;
      padding:3px 8px;
      border-radius:5px;
      background:var(--coral-pale);
      color:#b84d32;
      font-size:11px;
      font-weight:850;
    }
    .version-label{
      color:var(--lime-deep);
      font-size:12px;
      font-weight:850;
    }
    .version-number{
      margin:0;
      font-size:32px;
      line-height:1;
      font-weight:900;
      letter-spacing:-1px;
    }
    .version-list{
      display:grid;
      gap:0;
      margin:0;
      padding:0;
      list-style:none;
    }
    .version-list li{
      display:flex;
      justify-content:space-between;
      gap:15px;
      padding:12px 0;
      border-top:1px solid var(--line);
      color:var(--muted);
      font-size:13px;
    }
    .version-list strong{color:var(--ink)}
    .check-list{
      display:grid;
      gap:13px;
      margin:17px 0 0;
      padding:0;
      list-style:none;
    }
    .check-list li{
      position:relative;
      padding-left:29px;
      color:#4f5e57;
      font-size:14px;
    }
    .check-list li:before{
      content:"✓";
      position:absolute;
      left:0;
      top:1px;
      width:20px;
      height:20px;
      display:grid;
      place-items:center;
      border-radius:50%;
      background:var(--lime-pale);
      color:var(--lime-deep);
      font-size:12px;
      font-weight:900;
    }

    .faq-layout{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:24px;
      align-items:start;
    }
    .faq-card{padding:28px}
    .faq-card.lead{
      background:var(--coral-pale);
      border-color:#f5d4c9;
    }
    .faq-card.lead p{margin:0;color:#79564d;font-size:14px}
    .faq-list{
      display:grid;
      gap:10px;
    }
    .faq-item{
      overflow:hidden;
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:12px;
    }
    .faq-question{
      width:100%;
      min-height:58px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:15px 18px;
      border:0;
      background:transparent;
      color:var(--ink);
      text-align:left;
      font-size:15px;
      font-weight:850;
    }
    .faq-question span:last-child{
      color:var(--lime-deep);
      font-size:21px;
      line-height:1;
      transition:var(--transition);
    }
    .faq-answer{
      display:none;
      padding:0 18px 18px;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}

    .index-section{
      padding:0 0 75px;
    }
    .index-strip{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr 1.1fr;
      gap:0;
      overflow:hidden;
      background:var(--dark);
      color:var(--white);
      border-radius:18px;
    }
    .index-card{
      min-height:160px;
      padding:24px;
      border:0;
      border-right:1px solid rgba(255,255,255,.1);
      border-radius:0;
      background:transparent;
      box-shadow:none;
      transition:var(--transition);
    }
    .index-card:last-child{border-right:0}
    .index-card:hover{background:rgba(182,236,50,.09)}
    .index-card small{
      display:block;
      margin-bottom:17px;
      color:var(--lime);
      font-size:11px;
      font-weight:900;
      letter-spacing:.7px;
    }
    .index-card h3{margin:0 0 8px;font-size:19px}
    .index-card p{margin:0 0 14px;color:#b6c4bc;font-size:12px;line-height:1.55}
    .index-card .text-link{color:var(--lime);font-size:13px}

    .cta{
      padding:0 0 78px;
    }
    .cta-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
      padding:32px 36px;
      background:var(--lime);
      border-radius:18px;
      color:#203200;
    }
    .cta-box h2{font-size:28px;margin:0 0 5px}
    .cta-box p{margin:0;color:#4c650d;font-size:14px}
    .cta-box .btn-dark{white-space:nowrap}

    .site-footer{
      padding:48px 0 20px;
      background:var(--dark);
      color:var(--white);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.6fr .8fr .8fr;
      gap:40px;
      padding-bottom:36px;
    }
    .footer-brand .brand-name{
      color:var(--white);
      font-size:16px;
    }
    .footer-brand p{
      max-width:410px;
      margin:12px 0 0;
      color:#abbab1;
      font-size:13px;
    }
    .footer-title{
      margin:0 0 13px;
      color:var(--lime);
      font-size:14px;
    }
    .footer-links{display:grid;gap:7px}
    .footer-links a{
      color:#b4c1ba;
      font-size:13px;
      transition:var(--transition);
    }
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.12);
      color:#8f9f96;
      font-size:12px;
    }
    .footer-bottom a:hover{color:var(--lime)}

    @media (max-width:1024px){
      .header-inner{gap:14px}
      .brand{min-width:220px}
      .header-actions .btn-outline{display:none}
      .download-layout{grid-template-columns:1fr}
      .index-strip{grid-template-columns:repeat(2,1fr)}
      .index-card:nth-child(2){border-right:0}
      .index-card:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
    }

    @media (max-width:768px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .header-inner{min-height:72px}
      .brand{min-width:0;flex:1}
      .brand-name{font-size:13px}
      .brand-sub{font-size:9px}
      .main-nav{
        display:none;
        position:absolute;
        left:18px;
        right:18px;
        top:70px;
        padding:10px;
        flex-direction:column;
        align-items:stretch;
        background:var(--paper);
        border:1px solid var(--line);
        border-radius:13px;
        box-shadow:var(--shadow);
      }
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .header-actions{display:none}
      .menu-toggle{display:block}
      .page-hero{padding-top:25px}
      .hero-panel{padding:27px 23px 35px;border-radius:18px}
      h1{font-size:clamp(31px,9vw,47px);letter-spacing:-1.3px}
      .hero-content p{font-size:15px}
      .section{padding:52px 0}
      .section-head{display:block;margin-bottom:21px}
      .section-intro{margin-top:10px;text-align:left}
      .steps-grid{grid-template-columns:1fr}
      .step-card{min-height:auto}
      .info-layout,.faq-layout{grid-template-columns:1fr}
      .index-strip{grid-template-columns:1fr}
      .index-card{
        min-height:auto;
        border-right:0;
        border-bottom:1px solid rgba(255,255,255,.1);
      }
      .index-card:last-child{border-bottom:0}
      .cta-box{display:block;padding:27px 24px}
      .cta-box .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:8px}
    }

    @media (max-width:520px){
      .container{width:calc(100% - 32px)}
      .brand-mark{width:35px;height:35px;border-radius:10px}
      .brand-name{font-size:12px;line-height:1.3}
      .brand-sub{letter-spacing:.7px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .device-panel,.install-panel,.version-card,.check-card,.faq-card{padding:22px}
      .download-box{grid-template-columns:1fr;text-align:center}
      .qr-placeholder{width:145px;margin:auto}
      .download-box .btn{width:100%}
      .version-top{display:block}
      .version-label{display:block;margin-top:12px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }

/* roulang page: category4 */
:root{
      --ink:#17211f;--muted:#64716c;--soft:#f5f4ee;--paper:#fffefa;--line:#dbe2da;
      --lime:#b6ec32;--lime-deep:#548400;--lime-pale:#eff9cf;--coral:#ef7856;
      --coral-pale:#fff0eb;--dark:#172420;--dark-soft:#23342e;--white:#fff;
      --radius:16px;--radius-sm:11px;--shadow:0 14px 34px rgba(23,33,31,.08);
      --shadow-hover:0 18px 42px rgba(23,33,31,.14);--container:1200px;--transition:180ms ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--soft);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
    button,input{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,254,250,.95);border-bottom:1px solid rgba(219,226,218,.9);backdrop-filter:blur(14px)}
    .header-inner{min-height:82px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{width:39px;height:39px;flex:none;border-radius:12px;background:var(--dark);color:var(--lime);display:grid;place-items:center;font-size:20px;font-weight:900}
    .brand-copy{line-height:1.22}.brand-name{display:block;font-size:14px;font-weight:850;letter-spacing:-.25px}
    .brand-sub{display:block;margin-top:3px;color:var(--lime-deep);font-size:10px;font-weight:800;letter-spacing:1.2px}
    .main-nav{display:flex;align-items:center;justify-content:center;gap:5px;flex:1}
    .main-nav a{padding:9px 11px;border-radius:8px;color:#43504b;font-size:14px;font-weight:750;transition:var(--transition)}
    .main-nav a:hover,.main-nav a.active{background:var(--lime-pale);color:#304b00}
    .header-actions{display:flex;gap:8px;align-items:center}
    .btn{min-height:43px;padding:10px 16px;border:1px solid transparent;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;font-size:14px;line-height:1.2;transition:var(--transition)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 18px rgba(23,33,31,.13)}
    .btn:active{transform:translateY(0);box-shadow:none}.btn-primary{background:var(--lime);color:#1f3000}
    .btn-dark{background:var(--dark);color:var(--white)}.btn-outline{background:transparent;border-color:#bdc8bd;color:#314039}
    .btn-outline:hover{background:var(--white);border-color:#84958a}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--dark);font-size:24px}
    .page-hero{padding:54px 0 34px}
    .page-hero-shell{background:var(--dark);border-radius:24px;padding:clamp(30px,6vw,70px);position:relative;overflow:hidden;color:#fff;box-shadow:var(--shadow)}
    .page-hero-shell:after{content:"04";position:absolute;right:38px;bottom:-50px;color:rgba(182,236,50,.12);font-size:190px;font-weight:900;line-height:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:850;letter-spacing:.7px}
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block}
    h1{position:relative;z-index:1;margin:17px 0 14px;max-width:820px;font-size:clamp(34px,5vw,62px);line-height:1.15;letter-spacing:-1.8px}
    .page-hero p{position:relative;z-index:1;max-width:720px;margin:0;color:#c9d3cc;font-size:17px}
    .hero-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}
    .section{padding:68px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-kicker{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:.7px}
    h2{margin:5px 0 0;font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-.7px}
    .section-intro{max-width:390px;margin:0;color:var(--muted);font-size:14px;text-align:right}
    .step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .step-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 8px 22px rgba(23,33,31,.04);transition:var(--transition)}
    .step-card:hover,.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .step-no{width:38px;height:38px;border-radius:10px;background:var(--lime-pale);color:var(--lime-deep);display:grid;place-items:center;font-weight:900;margin-bottom:20px}
    .step-card h3,.check-card h3{font-size:19px;margin:0 0 8px}.step-card p,.check-card p{margin:0;color:var(--muted);font-size:14px}
    .help-layout{display:grid;grid-template-columns:.86fr 1.14fr;gap:24px;align-items:start}
    .check-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:30px;position:sticky;top:110px}
    .check-panel h3{font-size:24px;margin:0 0 10px}.check-panel>p{color:#b9c8bf;font-size:14px;margin:0 0 22px}
    .check-list{list-style:none;margin:0;padding:0}.check-list li{display:flex;gap:12px;padding:14px 0;border-top:1px solid rgba(255,255,255,.13);font-size:14px}
    .check-list b{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:var(--lime);color:#203300;font-size:12px;flex:none}
    .faq-list{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    details{border-bottom:1px solid var(--line)}details:last-child{border-bottom:0}
    summary{list-style:none;cursor:pointer;padding:21px 25px;font-size:16px;font-weight:850;display:flex;justify-content:space-between;gap:16px}
    summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--lime-deep);font-size:23px;line-height:1}
    details[open] summary:after{content:"−"}details p{padding:0 25px 22px;margin:0;color:var(--muted);font-size:14px;max-width:780px}
    .cta{padding:0 0 72px}.cta-box{background:var(--lime);border-radius:20px;padding:32px 38px;display:flex;justify-content:space-between;align-items:center;gap:24px}
    .cta-box h2{margin:0;font-size:27px}.cta-box p{margin:6px 0 0;color:#405400;font-size:14px}
    .site-footer{background:var(--dark);color:#fff;padding:50px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
    .footer-brand .brand-name{font-size:16px}.footer-brand p{max-width:420px;color:#aebdb4;font-size:14px;margin:13px 0 0}
    .footer-title{font-size:14px;margin:0 0 13px;color:var(--lime)}.footer-links{display:grid;gap:7px}
    .footer-links a{color:#c0ccc5;font-size:13px;transition:var(--transition)}.footer-links a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#91a098;font-size:12px}.footer-bottom a:hover{color:var(--lime)}
    @media(max-width:1024px){.header-actions .btn-outline{display:none}.brand{min-width:220px}.help-layout{grid-template-columns:1fr}.check-panel{position:static}}
    @media(max-width:768px){.container{width:min(calc(100% - 36px),var(--container))}.header-inner{min-height:72px;gap:10px}.brand{flex:1;min-width:0}.brand-name{font-size:12px}.main-nav{display:none;position:absolute;left:18px;right:18px;top:72px;padding:10px;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:12px 14px}.menu-toggle{display:block}.header-actions{display:none}.page-hero{padding:28px 0 18px}.page-hero-shell{border-radius:18px;padding:30px 23px}.page-hero-shell:after{font-size:120px;right:12px}.section{padding:48px 0}.section-head{display:block}.section-intro{text-align:left;margin-top:10px}.step-grid{grid-template-columns:1fr}.cta-box{display:block;padding:28px 24px}.cta-box .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-bottom:8px}}
    @media(max-width:520px){h1{font-size:34px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn{width:100%}.check-panel{padding:24px}.summary{font-size:15px}.footer-grid{grid-template-columns: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}