/* roulang page: index */
:root{
      --ink:#24231f;
      --ink-2:#3b3932;
      --muted:#706d64;
      --paper:#fbf6eb;
      --paper-2:#fffaf0;
      --paper-3:#f4ecdc;
      --line:rgba(36,35,31,.14);
      --line-strong:rgba(36,35,31,.24);
      --mint:#29c7a1;
      --mint-dark:#139174;
      --mint-soft:#e6f8f2;
      --amber:#f1a33a;
      --amber-soft:#fff2d6;
      --violet:#746b92;
      --violet-soft:#eeeaf7;
      --white:#ffffff;
      --shadow:0 14px 34px rgba(42,38,28,.09);
      --shadow-hover:0 18px 42px rgba(42,38,28,.14);
      --radius:20px;
      --radius-sm:14px;
      --container:1220px;
      --nav-h:74px;
      --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--ink);
      background:
        linear-gradient(90deg,rgba(36,35,31,.035) 1px,transparent 1px) 0 0/32px 32px,
        linear-gradient(rgba(36,35,31,.025) 1px,transparent 1px) 0 0/32px 32px,
        var(--paper);
      line-height:1.75;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(41,199,161,.25)}
    .container{width:min(100% - 48px,var(--container));margin-inline:auto}
    .skip-link{
      position:absolute;left:18px;top:-80px;background:var(--ink);color:var(--white);
      padding:10px 14px;border-radius:12px;z-index:1000;transition:.2s
    }
    .skip-link:focus{top:14px}
    .site-header{
      position:sticky;top:0;z-index:900;
      backdrop-filter:saturate(140%) blur(12px);
      background:rgba(255,250,240,.9);
      border-bottom:1px solid var(--line);
    }
    .nav{
      min-height:var(--nav-h);
      display:flex;align-items:center;justify-content:space-between;gap:18px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:245px;
      font-weight:800;letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;height:42px;border:1px solid var(--line-strong);border-radius:14px;
      background:linear-gradient(135deg,var(--paper-2),var(--mint-soft));
      position:relative;box-shadow:0 8px 18px rgba(36,35,31,.08);
    }
    .brand-mark:before{
      content:"";position:absolute;left:9px;right:9px;top:13px;height:5px;
      border-top:3px solid var(--ink);border-bottom:3px solid var(--ink);
      opacity:.8;
    }
    .brand-mark:after{
      content:"";position:absolute;width:8px;height:8px;border-radius:3px;background:var(--mint);
      right:-3px;bottom:8px;border:1px solid var(--ink);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.15}
    .brand-text strong{font-size:16px}
    .brand-text span{font-size:12px;color:var(--muted);font-weight:650;margin-top:3px}
    .nav-links{
      display:flex;align-items:center;justify-content:center;gap:8px;flex:1;
    }
    .nav-link{
      padding:10px 14px;border-radius:999px;color:var(--ink-2);font-weight:700;font-size:15px;
      border:1px solid transparent;transition:.2s ease;
    }
    .nav-link:hover{background:var(--paper-3);border-color:var(--line);transform:translateY(-1px)}
    .nav-link.active{background:var(--ink);color:var(--white);border-color:var(--ink)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
      background:var(--paper-2);align-items:center;justify-content:center;
    }
    .menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{
      display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;content:"";transition:.2s;
    }
    .menu-toggle span:before{transform:translateY(-7px)}
    .menu-toggle span:after{transform:translateY(5px)}
    .btn{
      min-height:48px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
      gap:8px;font-weight:800;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
      white-space:nowrap;
    }
    .btn-primary{background:var(--mint);color:#06291f;border-color:rgba(36,35,31,.18);box-shadow:0 10px 22px rgba(41,199,161,.24)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(41,199,161,.32);background:#35d8b0}
    .btn-secondary{background:var(--paper-2);color:var(--ink);border-color:var(--line-strong)}
    .btn-secondary:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--mint)}
    .btn-warn{background:var(--amber-soft);color:#5c3800;border-color:rgba(241,163,58,.5)}
    .btn-warn:hover{transform:translateY(-2px);box-shadow:0 12px 25px rgba(241,163,58,.2);border-color:var(--amber)}
    .btn:active{transform:translateY(1px)}
    .btn:focus-visible,.nav-link:focus-visible,.faq-question:focus-visible,.carousel-btn:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:2px solid var(--ink);outline-offset:3px;
    }
    .hero{
      padding:58px 0 74px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";position:absolute;inset:0;
      background:
        radial-gradient(circle at 16% 18%,rgba(41,199,161,.2),transparent 26%),
        radial-gradient(circle at 84% 12%,rgba(116,107,146,.14),transparent 28%),
        linear-gradient(135deg,rgba(255,250,240,.96),rgba(244,236,220,.8));
      z-index:-2;
    }
    .hero-stage{
      border:1px solid var(--line-strong);
      border-radius:30px;
      overflow:hidden;
      box-shadow:var(--shadow);
      background:var(--paper-2);
      position:relative;
    }
    .hero-stage::after{
      content:"";position:absolute;inset:0;pointer-events:none;
      background:linear-gradient(90deg,rgba(36,35,31,.04) 1px,transparent 1px) 0 0/28px 28px;
      opacity:.55;
    }
    .hero-topbar{
      display:flex;align-items:center;justify-content:space-between;gap:14px;
      padding:14px 18px;border-bottom:1px solid var(--line);
      background:rgba(36,35,31,.04);
      position:relative;z-index:1;
    }
    .status-strip{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .dot{width:9px;height:9px;border-radius:99px;background:var(--mint);box-shadow:0 0 0 4px rgba(41,199,161,.14)}
    .count-pill{
      display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;
      background:var(--ink);color:var(--white);font-size:13px;font-weight:800;
    }
    .hero-content{
      position:relative;z-index:1;
      display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:stretch;
      padding:44px;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:var(--mint-soft);
      color:#0f6e5b;font-weight:800;font-size:14px;margin-bottom:18px;
    }
    h1{
      margin:0;
      font-size:clamp(32px,5vw,56px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:850;
      max-width:850px;
    }
    .hero-lead{
      margin:18px 0 0;
      font-size:18px;
      color:var(--ink-2);
      max-width:760px;
      line-height:1.85;
    }
    .hero-cta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:28px}
    .hero-kpis{
      display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:30px;max-width:780px;
    }
    .kpi{
      border:1px solid var(--line);border-radius:16px;background:rgba(255,250,240,.72);
      padding:14px 12px;min-height:82px;
    }
    .kpi strong{display:block;font-size:20px;line-height:1.1}
    .kpi span{font-size:13px;color:var(--muted);font-weight:650}
    .console{
      align-self:center;
      display:grid;gap:14px;
      transform:rotate(-1.2deg);
    }
    .console-card{
      border:1px solid var(--line-strong);border-radius:20px;background:var(--white);
      box-shadow:0 12px 26px rgba(36,35,31,.08);
      padding:16px;position:relative;overflow:hidden;
    }
    .console-card:nth-child(2){margin-left:28px;transform:rotate(1.8deg)}
    .console-card:nth-child(3){margin-left:56px;transform:rotate(-.8deg)}
    .console-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--amber)}
    .console-card.ok::before{background:var(--mint)}
    .console-card.check::before{background:var(--violet)}
    .card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .tag,.badge{
      display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 10px;
      border:1px solid var(--line);font-size:12px;font-weight:800;line-height:1.2;
    }
    .tag-mint{background:var(--mint-soft);color:#0f6e5b;border-color:rgba(41,199,161,.35)}
    .tag-amber{background:var(--amber-soft);color:#7a4c08;border-color:rgba(241,163,58,.42)}
    .tag-violet{background:var(--violet-soft);color:#51466f;border-color:rgba(116,107,146,.32)}
    .mono{
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      background:#25231f;color:#f8f1df;border-radius:12px;padding:12px;font-size:13px;line-height:1.65;
    }
    .check-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
    .check-list li{display:flex;gap:9px;align-items:flex-start;color:var(--ink-2);font-size:15px}
    .check-list li::before{content:"";width:8px;height:8px;border-radius:3px;background:var(--mint);margin-top:9px;flex:0 0 auto}
    section{padding:82px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:28px;
    }
    .section-kicker{color:var(--mint-dark);font-weight:850;font-size:14px;margin-bottom:7px}
    h2{font-size:clamp(24px,3vw,36px);line-height:1.25;margin:0;font-weight:820;letter-spacing:-.03em}
    .section-desc{max-width:760px;color:var(--muted);font-size:17px;margin:10px 0 0;line-height:1.8}
    .carousel-wrap{
      position:relative;border:1px solid var(--line-strong);border-radius:28px;background:var(--paper-2);
      box-shadow:var(--shadow);padding:20px;overflow:hidden;
    }
    .carousel-track{display:flex;transition:transform .35s ease}
    .slide{min-width:100%;padding:10px}
    .screenshot{
      max-width:920px;margin:0 auto;border:1px solid var(--line-strong);border-radius:24px;background:var(--white);
      overflow:hidden;box-shadow:0 16px 36px rgba(36,35,31,.08);transition:.2s;
    }
    .screenshot:hover{transform:translateY(-3px);border-color:var(--mint);box-shadow:var(--shadow-hover)}
    .shot-bar{
      display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 16px;
      border-bottom:1px solid var(--line);background:linear-gradient(90deg,var(--paper-3),var(--paper-2));
    }
    .shot-title{display:flex;align-items:center;gap:10px;font-weight:850}
    .shot-body{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:18px}
    .panel{
      border:1px solid var(--line);border-radius:18px;background:#fffdf7;padding:16px;
    }
    .panel h3,.card h3{font-size:20px;margin:0 0 8px;font-weight:790;line-height:1.35}
    .panel p,.card p{margin:0;color:var(--muted);line-height:1.75}
    .code-row{
      display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);
      font-size:15px;color:var(--ink-2);
    }
    .code-row:last-child{border-bottom:0}
    .carousel-controls{
      display:flex;align-items:center;justify-content:center;gap:12px;margin-top:18px;
    }
    .carousel-btn{
      width:44px;height:44px;border-radius:14px;border:1px solid var(--line-strong);background:var(--paper-2);
      display:grid;place-items:center;font-size:20px;font-weight:900;transition:.2s;
    }
    .carousel-btn:hover{background:var(--mint-soft);border-color:var(--mint);transform:translateY(-2px)}
    .pager{display:flex;gap:8px;align-items:center}
    .pager button{
      width:26px;height:8px;border-radius:99px;background:rgba(36,35,31,.16);transition:.2s;
    }
    .pager button.active{width:42px;background:var(--mint)}
    .requirements{background:rgba(255,250,240,.58)}
    .req-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:start}
    .card{
      border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);
      box-shadow:var(--shadow);padding:22px;position:relative;overflow:hidden;
    }
    .card::after{
      content:"";position:absolute;right:14px;top:14px;width:10px;height:10px;border-radius:3px;background:rgba(41,199,161,.45);
    }
    .req-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:16px;border:1px solid var(--line)}
    .req-table th{
      background:var(--ink);color:var(--white);text-align:left;padding:13px 14px;font-size:14px;
    }
    .req-table td{padding:14px;border-top:1px solid var(--line);background:#fffdf7;color:var(--ink-2);vertical-align:top}
    .req-table tr:hover td{background:var(--mint-soft)}
    .notice-stack{display:grid;gap:14px}
    .notice{
      padding:16px;border:1px solid var(--line);border-radius:18px;background:#fffdf7;
      display:flex;gap:12px;align-items:flex-start;
    }
    .notice-icon{width:28px;height:28px;border-radius:10px;background:var(--amber-soft);border:1px solid rgba(241,163,58,.4);flex:0 0 auto}
    .notice strong{display:block;margin-bottom:3px}
    .reviews-grid{
      display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start;
    }
    .review-card{
      border:1px solid var(--line);border-radius:20px;background:var(--paper-2);
      padding:18px;box-shadow:0 10px 24px rgba(36,35,31,.07);transition:.2s;
    }
    .review-card:nth-child(2),.review-card:nth-child(5){margin-top:26px}
    .review-card:hover{transform:translateY(-4px);border-color:var(--mint);box-shadow:var(--shadow-hover)}
    .review-line{height:4px;border-radius:99px;background:var(--mint);margin:-18px -18px 14px}
    .review-card.warn .review-line{background:var(--amber)}
    .review-card.check .review-line{background:var(--violet)}
    .review-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
    .review-card p{margin:0;color:var(--ink-2);line-height:1.75}
    .download{
      position:relative;
    }
    .download-panel{
      border:1px solid var(--line-strong);border-radius:30px;padding:44px;
      background:
        linear-gradient(45deg,rgba(36,35,31,.04) 25%,transparent 25%,transparent 75%,rgba(36,35,31,.04) 75%) 0 0/28px 28px,
        linear-gradient(45deg,rgba(36,35,31,.04) 25%,transparent 25%,transparent 75%,rgba(36,35,31,.04) 75%) 14px 14px/28px 28px,
        var(--paper-2);
      box-shadow:var(--shadow);
      text-align:center;
    }
    .download-panel .section-desc{margin-inline:auto}
    .download-buttons{
      display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px;
    }
    .download-action{
      min-height:92px;border-radius:20px;border:1px solid var(--line-strong);background:#fffdf7;
      display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
      padding:16px;font-weight:850;transition:.2s;
    }
    .download-action span{font-size:13px;color:var(--muted);font-weight:650}
    .download-action.primary{background:var(--mint);color:#06291f}
    .download-action.warn{background:var(--amber-soft);border-color:rgba(241,163,58,.48)}
    .download-action:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--mint)}
    .download-note{
      margin-top:16px;color:var(--muted);font-size:14px;
    }
    .content-news{background:rgba(244,236,220,.52)}
    .news-layout{display:grid;grid-template-columns:1.45fr .75fr;gap:22px}
    .news-list{border:1px solid var(--line);border-radius:22px;background:var(--paper-2);overflow:hidden;box-shadow:var(--shadow)}
    .news-item{
      display:grid;grid-template-columns:120px 1fr auto;gap:16px;align-items:center;
      padding:18px;border-bottom:1px solid var(--line);transition:.2s;
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:var(--mint-soft)}
    .news-date{
      border:1px solid var(--line);border-radius:14px;background:#fffdf7;padding:10px;text-align:center;font-weight:850;color:var(--ink-2);
    }
    .news-item h3{margin:0;font-size:18px;line-height:1.4}
    .news-item p{margin:4px 0 0;color:var(--muted);font-size:15px;line-height:1.65}
    .arrow-link{
      font-weight:850;color:var(--mint-dark);white-space:nowrap;
    }
    .recommend-card{
      border:1px solid var(--line);border-radius:22px;background:var(--ink);color:var(--white);
      padding:22px;box-shadow:var(--shadow);position:sticky;top:96px;
    }
    .recommend-card p{color:rgba(255,255,255,.72);margin:8px 0 18px}
    .compact-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .compact-list li{
      display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.12);
      font-size:14px;
    }
    .compact-list li:last-child{border-bottom:0}
    .faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
    .faq-item{
      border:1px solid var(--line);border-radius:18px;background:var(--paper-2);overflow:hidden;box-shadow:0 8px 20px rgba(36,35,31,.05);
    }
    .faq-question{
      width:100%;min-height:58px;padding:17px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px;
      text-align:left;font-weight:850;color:var(--ink);
    }
    .faq-question .num{
      color:var(--mint-dark);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin-right:8px;
    }
    .faq-question::after{content:"+";font-size:24px;line-height:1;color:var(--muted)}
    .faq-item.open .faq-question::after{content:"−"}
    .faq-answer{
      max-height:0;overflow:hidden;transition:max-height .22s ease;background:rgba(41,199,161,.055);
    }
    .faq-answer p{margin:0;padding:0 20px 18px 52px;color:var(--ink-2);line-height:1.8}
    .final-cta{
      padding-top:0;
    }
    .cta-row{
      border:1px solid var(--line-strong);border-radius:26px;background:linear-gradient(135deg,var(--ink),#343027);
      color:var(--white);padding:32px;display:flex;align-items:center;justify-content:space-between;gap:20px;
      box-shadow:var(--shadow);
    }
    .cta-row h2{color:var(--white)}
    .cta-row p{margin:8px 0 0;color:rgba(255,255,255,.72);max-width:720px}
    .site-footer{
      background:#24231f;color:rgba(255,255,255,.78);padding:48px 0 26px;border-top:1px solid rgba(255,255,255,.1);
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:30px}
    .footer-brand{display:flex;align-items:center;gap:12px;color:var(--white);font-weight:850}
    .footer-brand .brand-mark{background:linear-gradient(135deg,#fff7e7,var(--mint-soft))}
    .footer-text{margin:14px 0 0;color:rgba(255,255,255,.66);max-width:430px}
    .footer-title{color:var(--white);font-weight:850;margin-bottom:12px}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px}
    .footer-links a{color:rgba(255,255,255,.72);transition:.2s}
    .footer-links a:hover{color:var(--mint);text-decoration:underline;text-underline-offset:4px}
    .copyright{
      margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
      display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.58)
    }
    .toast{
      position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(20px);
      background:var(--ink);color:var(--white);padding:12px 16px;border-radius:999px;box-shadow:var(--shadow-hover);
      opacity:0;pointer-events:none;transition:.22s;z-index:1000;font-weight:750;
    }
    .toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
    @media (prefers-reduced-motion:reduce){
      *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
    }
    @media (max-width:1024px){
      .container{width:min(100% - 40px,var(--container))}
      .hero-content{grid-template-columns:1fr;padding:34px}
      .console{transform:none;max-width:700px}
      .req-grid,.news-layout{grid-template-columns:1fr}
      .recommend-card{position:relative;top:auto}
      .download-buttons{grid-template-columns:repeat(2,1fr)}
      .reviews-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      :root{--nav-h:64px}
      .container{width:min(100% - 32px,var(--container))}
      .menu-toggle{display:flex}
      .nav-links{
        position:absolute;left:16px;right:16px;top:70px;display:none;flex-direction:column;align-items:stretch;
        background:var(--paper-2);border:1px solid var(--line-strong);border-radius:20px;padding:12px;box-shadow:var(--shadow-hover);
      }
      .site-header.menu-open .nav-links{display:flex}
      .nav-link{text-align:center}
      .nav-actions .btn{display:none}
      .site-header.menu-open .nav-links .mobile-cta{display:flex}
      .brand{min-width:0}
      .brand-text strong{font-size:14px}
      .brand-text span{display:none}
      .hero{padding:30px 0 54px}
      .hero-topbar{align-items:flex-start;flex-direction:column}
      .hero-content{padding:26px 18px}
      .hero-kpis{grid-template-columns:repeat(2,1fr)}
      .hero-cta .btn{width:100%}
      .console-card:nth-child(2),.console-card:nth-child(3){margin-left:0;transform:none}
      section{padding:58px 0}
      .section-head{display:block}
      .shot-body{grid-template-columns:1fr}
      .req-table,.req-table thead,.req-table tbody,.req-table th,.req-table td,.req-table tr{display:block}
      .req-table thead{display:none}
      .req-table tr{border-bottom:1px solid var(--line)}
      .req-table td{border-top:0;padding:10px 14px}
      .req-table td::before{content:attr(data-label);display:block;font-weight:850;color:var(--ink);margin-bottom:2px}
      .reviews-grid{grid-template-columns:1fr}
      .review-card:nth-child(2),.review-card:nth-child(5){margin-top:0}
      .news-item{grid-template-columns:1fr;gap:10px}
      .download-panel{padding:28px 18px}
      .download-buttons{grid-template-columns:1fr}
      .cta-row{display:block}
      .cta-row .btn{margin-top:18px;width:100%}
      .footer-grid{grid-template-columns:1fr}
      .faq-answer p{padding-left:20px}
    }
    @media (max-width:420px){
      .container{width:min(100% - 28px,var(--container))}
      h1{font-size:31px}
      .hero-kpis{grid-template-columns:1fr}
      .card,.carousel-wrap{padding:16px}
      .download-action{min-height:84px}
    }

/* roulang page: category1 */
:root{
      --bg:#f7f1e6;
      --paper:#fffaf1;
      --paper-2:#fbf4e8;
      --ink:#24221f;
      --ink-soft:#5f5a51;
      --muted:#827a6f;
      --line:rgba(36,34,31,.13);
      --line-strong:rgba(36,34,31,.22);
      --mint:#32d6a0;
      --mint-dark:#169a75;
      --mint-soft:#e8fbf4;
      --amber:#f2a93b;
      --amber-soft:#fff2d7;
      --violet:#7d7198;
      --violet-soft:#efecf5;
      --danger-soft:#fff0e8;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:26px;
      --shadow:0 14px 34px rgba(30,28,24,.08);
      --shadow-hover:0 18px 46px rgba(30,28,24,.13);
      --container:1210px;
      --nav-h:74px;
      --ease:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--ink);
      background:
        linear-gradient(90deg,rgba(36,34,31,.035) 1px,transparent 1px),
        linear-gradient(rgba(36,34,31,.025) 1px,transparent 1px),
        radial-gradient(circle at 8% 5%,rgba(50,214,160,.13),transparent 34%),
        radial-gradient(circle at 92% 12%,rgba(242,169,59,.12),transparent 30%),
        var(--bg);
      background-size:32px 32px,32px 32px,auto,auto,auto;
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img,svg{max-width:100%;display:block}
    p{margin:0}
    ul{margin:0;padding:0;list-style:none}
    .container{
      width:min(var(--container),calc(100% - 48px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--nav-h);
      background:rgba(255,250,241,.92);
      backdrop-filter:blur(14px);
      border-bottom:1px solid var(--line);
    }
    .nav{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:275px;
      border-radius:18px;
      padding:8px 10px;
      transition:transform var(--ease),background var(--ease);
    }
    .brand:hover{background:rgba(50,214,160,.08);transform:translateY(-1px)}
    .brand-mark{
      width:42px;
      height:42px;
      border:2px solid rgba(36,34,31,.72);
      border-radius:13px;
      background:
        linear-gradient(135deg,rgba(50,214,160,.72),rgba(50,214,160,.18)),
        var(--paper);
      position:relative;
      flex:0 0 auto;
      box-shadow:inset 0 0 0 5px rgba(255,250,241,.65),0 8px 18px rgba(30,28,24,.1);
    }
    .brand-mark:before,
    .brand-mark:after{
      content:"";
      position:absolute;
      left:9px;
      right:9px;
      height:3px;
      border-radius:99px;
      background:var(--ink);
      opacity:.8;
    }
    .brand-mark:before{top:13px}
    .brand-mark:after{top:24px;width:14px;right:auto}
    .brand-text{display:flex;flex-direction:column;line-height:1.25}
    .brand-text strong{font-size:15px;font-weight:850;letter-spacing:.01em}
    .brand-text span{font-size:12px;color:var(--muted);white-space:nowrap}
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      flex:1;
    }
    .nav-link{
      padding:10px 16px;
      border:1px solid transparent;
      border-radius:999px;
      font-weight:700;
      color:var(--ink-soft);
      transition:background var(--ease),border-color var(--ease),color var(--ease),transform var(--ease);
    }
    .nav-link:hover{
      background:rgba(36,34,31,.05);
      border-color:var(--line);
      color:var(--ink);
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:var(--ink);
      background:var(--mint-soft);
      border-color:rgba(22,154,117,.25);
      box-shadow:inset 0 0 0 1px rgba(50,214,160,.18);
    }
    .nav-actions{display:flex;align-items:center;gap:12px}
    .btn{
      min-height:46px;
      padding:0 20px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      border:1px solid var(--line-strong);
      font-weight:800;
      letter-spacing:.01em;
      transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
      user-select:none;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
    .btn:active{transform:translateY(0);box-shadow:var(--shadow)}
    .btn:focus-visible,
    .nav-link:focus-visible,
    .menu-toggle:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:2px solid var(--ink);
      outline-offset:3px;
    }
    .btn-primary{
      background:linear-gradient(180deg,#47e2b1,#26c994);
      color:#10251f;
      border-color:rgba(22,154,117,.55);
      box-shadow:0 10px 22px rgba(50,214,160,.22);
    }
    .btn-secondary{
      background:var(--paper);
      color:var(--ink);
      border-color:var(--line-strong);
    }
    .btn-warning{
      background:var(--amber-soft);
      color:#5d3b08;
      border-color:rgba(242,169,59,.58);
    }
    .btn-dark{
      background:var(--ink);
      color:var(--paper);
      border-color:var(--ink);
    }
    .mobile-cta{display:none}
    .menu-toggle{
      display:none;
      width:46px;height:46px;
      border:1px solid var(--line);
      background:var(--paper);
      border-radius:14px;
      position:relative;
    }
    .menu-toggle span,
    .menu-toggle:before,
    .menu-toggle:after{
      content:"";
      position:absolute;
      left:12px;
      right:12px;
      height:2px;
      background:var(--ink);
      border-radius:99px;
      transition:transform var(--ease),opacity var(--ease),top var(--ease);
    }
    .menu-toggle span{top:22px}
    .menu-toggle:before{top:15px}
    .menu-toggle:after{top:29px}
    .menu-toggle.is-open span{opacity:0}
    .menu-toggle.is-open:before{top:22px;transform:rotate(45deg)}
    .menu-toggle.is-open:after{top:22px;transform:rotate(-45deg)}

    main{position:relative}
    .section{padding:86px 0}
    .section-tight{padding:58px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:24px;
      margin-bottom:28px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-size:14px;
      font-weight:850;
      color:var(--mint-dark);
      background:var(--mint-soft);
      border:1px solid rgba(22,154,117,.2);
      border-radius:999px;
      padding:6px 12px;
      margin-bottom:13px;
    }
    .section-kicker:before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--mint);
      box-shadow:0 0 0 4px rgba(50,214,160,.16);
    }
    h1,h2,h3{margin:0;color:var(--ink);letter-spacing:-.02em}
    h1{
      font-size:clamp(32px,5vw,56px);
      line-height:1.12;
      font-weight:900;
      max-width:920px;
    }
    h2{
      font-size:clamp(24px,3vw,36px);
      line-height:1.25;
      font-weight:850;
      max-width:820px;
    }
    h3{font-size:21px;line-height:1.35;font-weight:800}
    .lead{
      font-size:18px;
      color:var(--ink-soft);
      line-height:1.85;
      max-width:760px;
      margin-top:18px;
    }
    .muted{color:var(--muted)}
    .badge-row,.tag-row{
      display:flex;flex-wrap:wrap;gap:10px;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,250,241,.74);
      color:var(--ink-soft);
      font-size:13px;
      font-weight:780;
      padding:7px 11px;
      line-height:1.2;
    }
    .badge.ok{background:var(--mint-soft);border-color:rgba(22,154,117,.25);color:#146a52}
    .badge.warn{background:var(--amber-soft);border-color:rgba(242,169,59,.34);color:#73500e}
    .badge.check{background:var(--violet-soft);border-color:rgba(125,113,152,.25);color:#51476a}
    .hero{
      padding:58px 0 74px;
      position:relative;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0 0 auto 0;
      height:72%;
      background:linear-gradient(180deg,rgba(255,250,241,.72),rgba(255,250,241,0));
      pointer-events:none;
      z-index:-1;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.04fr) minmax(360px,.72fr);
      gap:34px;
      align-items:stretch;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      font-size:14px;
      color:var(--muted);
      margin-bottom:22px;
    }
    .breadcrumb a{font-weight:750;color:var(--ink-soft)}
    .breadcrumb a:hover{color:var(--mint-dark);text-decoration:underline}
    .hero-copy{
      background:rgba(255,250,241,.62);
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .hero-copy:after{
      content:"";
      position:absolute;
      right:24px;top:24px;
      width:18px;height:18px;
      border-top:3px solid rgba(50,214,160,.7);
      border-right:3px solid rgba(50,214,160,.7);
      border-radius:3px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:13px;
      margin-top:30px;
    }
    .hero-meta{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:28px;
    }
    .mini-stat{
      border:1px solid var(--line);
      background:rgba(255,250,241,.78);
      border-radius:16px;
      padding:13px 14px;
    }
    .mini-stat strong{
      display:block;
      font-size:18px;
      font-weight:900;
      line-height:1.25;
    }
    .mini-stat span{font-size:13px;color:var(--muted)}
    .invite-panel{
      border:1px solid rgba(36,34,31,.16);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(50,214,160,.12),transparent 38%),
        linear-gradient(180deg,var(--paper),var(--paper-2));
      box-shadow:var(--shadow);
      padding:26px;
      position:relative;
      overflow:hidden;
    }
    .invite-panel:before{
      content:"";
      position:absolute;
      inset:14px;
      border:1px dashed rgba(36,34,31,.12);
      border-radius:22px;
      pointer-events:none;
    }
    .invite-top{
      position:relative;
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:flex-start;
      margin-bottom:20px;
    }
    .invite-title strong{
      display:block;
      font-size:24px;
      font-weight:900;
      line-height:1.25;
      margin-bottom:6px;
    }
    .invite-title span{color:var(--ink-soft);font-size:15px}
    .score-card{
      width:96px;
      height:96px;
      border-radius:24px;
      display:grid;
      place-items:center;
      background:var(--ink);
      color:var(--paper);
      box-shadow:0 14px 30px rgba(36,34,31,.18);
      border:3px solid rgba(50,214,160,.8);
      flex:0 0 auto;
    }
    .score-card b{font-size:28px;line-height:1}
    .score-card small{display:block;font-size:12px;color:rgba(255,250,241,.72)}
    .progress-box{
      position:relative;
      background:rgba(255,250,241,.72);
      border:1px solid var(--line);
      border-radius:18px;
      padding:16px;
      margin:14px 0 18px;
    }
    .progress-head{
      display:flex;
      justify-content:space-between;
      gap:10px;
      font-size:14px;
      color:var(--ink-soft);
      font-weight:800;
      margin-bottom:10px;
    }
    .progress-track{
      height:14px;
      border-radius:999px;
      background:rgba(36,34,31,.08);
      border:1px solid rgba(36,34,31,.08);
      overflow:hidden;
    }
    .progress-fill{
      height:100%;
      width:68%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--mint),#90edcf);
      box-shadow:0 0 18px rgba(50,214,160,.45);
    }
    .reward-list{
      position:relative;
      display:grid;
      gap:10px;
      margin:18px 0 22px;
    }
    .reward-item{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:12px;
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,250,241,.75);
    }
    .reward-item i{
      width:22px;height:22px;
      border-radius:8px;
      background:var(--mint-soft);
      border:1px solid rgba(22,154,117,.22);
      position:relative;
      flex:0 0 auto;
      margin-top:2px;
    }
    .reward-item i:after{
      content:"";
      position:absolute;
      width:9px;height:5px;
      border-left:2px solid var(--mint-dark);
      border-bottom:2px solid var(--mint-dark);
      transform:rotate(-45deg);
      left:6px;top:6px;
    }
    .reward-item span{font-size:14px;color:var(--ink-soft);line-height:1.65}
    .filter-panel{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:rgba(255,250,241,.78);
      padding:24px;
      box-shadow:var(--shadow);
    }
    .filter-title{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
    }
    .filter-title strong{font-size:18px;font-weight:900}
    .filter-tags{display:flex;flex-wrap:wrap;gap:10px}
    .filter-tag{
      border:1px solid var(--line-strong);
      border-radius:14px;
      padding:10px 13px;
      background:var(--paper);
      color:var(--ink-soft);
      font-weight:800;
      transition:transform var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease);
    }
    .filter-tag:hover,.filter-tag.is-active{
      background:var(--mint-soft);
      border-color:rgba(22,154,117,.36);
      color:var(--ink);
      transform:translateY(-1px);
      box-shadow:0 10px 22px rgba(50,214,160,.12);
    }
    .content-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 360px;
      gap:26px;
      align-items:start;
    }
    .card-list{
      display:grid;
      gap:18px;
    }
    .guide-card{
      position:relative;
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:rgba(255,250,241,.82);
      box-shadow:var(--shadow);
      overflow:hidden;
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
    }
    .guide-card:before{
      content:"";
      position:absolute;
      left:0;top:0;bottom:0;
      width:5px;
      background:rgba(125,113,152,.46);
      transition:background var(--ease);
    }
    .guide-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(22,154,117,.42);
      background:#fffdf7;
    }
    .guide-card:hover:before{background:var(--mint)}
    .guide-main{padding-left:3px}
    .guide-main h3{margin:10px 0 8px}
    .guide-main p{
      color:var(--ink-soft);
      font-size:15.5px;
      line-height:1.78;
      max-width:690px;
    }
    .guide-badges{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:14px;
    }
    .guide-action{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      align-items:flex-end;
      gap:18px;
      min-width:142px;
    }
    .card-no{
      font-weight:950;
      font-size:24px;
      color:rgba(36,34,31,.18);
      line-height:1;
    }
    .side-stack{
      position:sticky;
      top:94px;
      display:grid;
      gap:18px;
    }
    .side-card,.note-card{
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:linear-gradient(180deg,rgba(255,250,241,.9),rgba(251,244,232,.88));
      box-shadow:var(--shadow);
      padding:22px;
      overflow:hidden;
      position:relative;
    }
    .side-card:after{
      content:"";
      position:absolute;
      right:18px;top:18px;
      width:16px;height:16px;
      border-top:3px solid rgba(242,169,59,.55);
      border-right:3px solid rgba(242,169,59,.55);
      border-radius:3px;
    }
    .side-card h3,.note-card h3{margin-bottom:14px}
    .check-list{display:grid;gap:12px}
    .check-list li{
      display:flex;
      gap:10px;
      color:var(--ink-soft);
      line-height:1.65;
      font-size:15px;
    }
    .check-list li:before{
      content:"";
      width:8px;height:8px;
      border-radius:50%;
      background:var(--mint);
      box-shadow:0 0 0 4px rgba(50,214,160,.12);
      flex:0 0 auto;
      margin-top:10px;
    }
    .encoding-table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:16px;
      background:var(--paper);
      margin-top:14px;
    }
    .encoding-table th,
    .encoding-table td{
      text-align:left;
      padding:12px 13px;
      border-bottom:1px solid var(--line);
      font-size:14px;
    }
    .encoding-table th{
      background:var(--ink);
      color:var(--paper);
      font-weight:850;
    }
    .encoding-table tr:last-child td{border-bottom:0}
    .encoding-table td{color:var(--ink-soft)}
    .flow-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .flow-panel{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(90deg,rgba(36,34,31,.035) 1px,transparent 1px),
        linear-gradient(rgba(36,34,31,.025) 1px,transparent 1px),
        rgba(255,250,241,.82);
      background-size:28px 28px;
      padding:26px;
      box-shadow:var(--shadow);
    }
    .step-list{display:grid;gap:14px;margin-top:22px}
    .step{
      display:grid;
      grid-template-columns:48px 1fr;
      gap:14px;
      align-items:start;
      padding:16px;
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,250,241,.86);
    }
    .step-num{
      width:48px;height:48px;
      display:grid;
      place-items:center;
      border-radius:16px;
      background:var(--ink);
      color:var(--paper);
      font-weight:950;
      box-shadow:0 10px 18px rgba(36,34,31,.13);
    }
    .step strong{display:block;font-weight:900;margin-bottom:4px}
    .step span{display:block;color:var(--ink-soft);font-size:15px;line-height:1.7}
    .compat-card{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,var(--mint-soft),rgba(255,250,241,.9));
      padding:26px;
      box-shadow:var(--shadow);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:22px;
    }
    .compat-list{display:grid;gap:12px}
    .compat-item{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
      padding:13px 14px;
      border-radius:15px;
      background:rgba(255,250,241,.75);
      border:1px solid rgba(36,34,31,.1);
      font-weight:800;
    }
    .compat-item span:last-child{color:var(--mint-dark);font-size:14px}
    .download-panel{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(36,34,31,.18);
      border-radius:30px;
      background:
        linear-gradient(90deg,rgba(36,34,31,.04) 1px,transparent 1px),
        linear-gradient(rgba(36,34,31,.035) 1px,transparent 1px),
        linear-gradient(135deg,rgba(50,214,160,.22),rgba(255,250,241,.96) 42%,rgba(242,169,59,.15));
      background-size:34px 34px,34px 34px,auto;
      padding:34px;
      box-shadow:var(--shadow-hover);
    }
    .download-panel .section-kicker{margin-bottom:10px}
    .download-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:end;
    }
    .download-buttons{
      display:grid;
      grid-template-columns:repeat(2,minmax(190px,1fr));
      gap:12px;
      min-width:430px;
    }
    .feedback-form{
      margin-top:22px;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .form-field{display:grid;gap:7px}
    .form-field.full{grid-column:1 / -1}
    .form-field label{font-size:13px;font-weight:850;color:var(--ink-soft)}
    .form-field input,
    .form-field select,
    .form-field textarea{
      width:100%;
      border:1px solid var(--line-strong);
      border-radius:14px;
      background:rgba(255,250,241,.92);
      color:var(--ink);
      padding:12px 13px;
      min-height:46px;
      transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
    }
    .form-field textarea{min-height:96px;resize:vertical}
    .form-field input:focus,
    .form-field select:focus,
    .form-field textarea:focus{
      outline:none;
      border-color:rgba(22,154,117,.7);
      box-shadow:0 0 0 4px rgba(50,214,160,.15);
      background:#fffdf8;
    }
    .faq-list{display:grid;gap:13px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,250,241,.82);
      box-shadow:0 8px 22px rgba(30,28,24,.05);
      overflow:hidden;
      transition:background var(--ease),border-color var(--ease);
    }
    .faq-item.is-open{
      background:linear-gradient(180deg,rgba(232,251,244,.8),rgba(255,250,241,.88));
      border-color:rgba(22,154,117,.28);
    }
    .faq-question{
      width:100%;
      min-height:58px;
      border:0;
      background:transparent;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:17px 20px;
      color:var(--ink);
      text-align:left;
      font-weight:900;
    }
    .faq-question span{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .faq-question span:before{
      content:"";
      width:9px;height:9px;
      border-radius:50%;
      background:var(--amber);
      box-shadow:0 0 0 4px rgba(242,169,59,.15);
      flex:0 0 auto;
    }
    .faq-icon{
      width:28px;height:28px;
      border:1px solid var(--line);
      border-radius:10px;
      position:relative;
      flex:0 0 auto;
      background:var(--paper);
    }
    .faq-icon:before,.faq-icon:after{
      content:"";
      position:absolute;
      left:7px;right:7px;top:13px;
      height:2px;border-radius:99px;background:var(--ink);
      transition:transform var(--ease);
    }
    .faq-icon:after{transform:rotate(90deg)}
    .faq-item.is-open .faq-icon:after{transform:rotate(0)}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height 220ms ease;
    }
    .faq-answer p{
      padding:0 20px 20px 39px;
      color:var(--ink-soft);
      font-size:15.5px;
      line-height:1.75;
      max-width:880px;
    }
    .site-footer{
      background:#24221f;
      color:rgba(255,250,241,.86);
      padding:54px 0 28px;
      margin-top:40px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .7fr .7fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,250,241,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-size:18px;
      font-weight:900;
      margin-bottom:14px;
    }
    .site-footer .brand-mark{
      width:38px;height:38px;
      border-color:rgba(255,250,241,.7);
      box-shadow:none;
    }
    .footer-text{
      color:rgba(255,250,241,.66);
      max-width:430px;
      line-height:1.8;
      font-size:15px;
    }
    .footer-title{
      font-weight:900;
      margin-bottom:14px;
      color:var(--paper);
    }
    .footer-links{display:grid;gap:10px}
    .footer-links a{
      color:rgba(255,250,241,.66);
      transition:color var(--ease),text-decoration-color var(--ease);
      text-decoration:underline;
      text-decoration-color:transparent;
      text-underline-offset:4px;
    }
    .footer-links a:hover{
      color:var(--mint);
      text-decoration-color:var(--mint);
    }
    .copyright{
      padding-top:22px;
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,250,241,.52);
      font-size:14px;
    }
    @media (prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
    }
    @media (max-width:1080px){
      .container{width:min(100% - 40px,var(--container))}
      .brand{min-width:auto}
      .hero-grid,.content-layout,.flow-grid,.download-grid{grid-template-columns:1fr}
      .side-stack{position:static}
      .download-buttons{min-width:0}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:860px){
      :root{--nav-h:64px}
      .site-header{height:var(--nav-h)}
      .nav{height:var(--nav-h)}
      .brand-text strong{font-size:14px}
      .brand-text span{display:none}
      .menu-toggle{display:block}
      .nav-links{
        position:absolute;
        left:20px;
        right:20px;
        top:72px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        justify-content:flex-start;
        background:rgba(255,250,241,.98);
        border:1px solid var(--line);
        border-radius:22px;
        padding:14px;
        box-shadow:var(--shadow-hover);
      }
      .nav-links.is-open{display:flex}
      .nav-link{width:100%;text-align:center}
      .mobile-cta{display:flex}
      .nav-actions .btn-primary{display:none}
      .hero{padding-top:36px}
      .hero-copy,.invite-panel,.download-panel{padding:24px}
      .hero-meta{grid-template-columns:1fr}
      .guide-card{grid-template-columns:1fr}
      .guide-action{align-items:flex-start;min-width:0}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid > div:first-child{grid-column:1 / -1}
    }
    @media (max-width:620px){
      .container{width:calc(100% - 32px)}
      .section{padding:58px 0}
      .section-tight{padding:42px 0}
      h1{font-size:clamp(30px,10vw,38px)}
      .lead{font-size:16px}
      .hero-copy,.invite-panel,.filter-panel,.flow-panel,.compat-card,.download-panel{border-radius:22px;padding:20px}
      .invite-top{flex-direction:column}
      .score-card{width:86px;height:86px}
      .download-buttons,.feedback-form{grid-template-columns:1fr}
      .btn{width:100%;min-height:48px}
      .filter-title{flex-direction:column;align-items:flex-start}
      .encoding-table thead{display:none}
      .encoding-table,.encoding-table tbody,.encoding-table tr,.encoding-table td{display:block;width:100%}
      .encoding-table tr{border-bottom:1px solid var(--line)}
      .encoding-table tr:last-child{border-bottom:0}
      .encoding-table td{border-bottom:0;padding:9px 12px}
      .encoding-table td:before{content:attr(data-label) "：";font-weight:900;color:var(--ink)}
      .footer-grid{grid-template-columns:1fr}
      .copyright{flex-direction:column}
    }
    @media (max-width:420px){
      .container{width:calc(100% - 28px)}
      .brand-mark{width:38px;height:38px}
      .brand-text strong{max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .hero-actions{flex-direction:column}
      .step{grid-template-columns:1fr}
      .step-num{width:44px;height:44px}
      .guide-card,.side-card,.note-card{padding:18px}
    }