/* roulang page: index */
:root{
      --primary:#2563eb;
      --primary-600:#1d4ed8;
      --primary-50:#eff6ff;
      --primary-100:#dbeafe;
      --accent:#7c3aed;
      --accent-soft:#f3e8ff;
      --cyan:#06b6d4;
      --gold:#f59e0b;
      --green:#16a34a;
      --ink:#0f172a;
      --text:#334155;
      --muted:#64748b;
      --weak:#94a3b8;
      --line:#e2e8f0;
      --line-soft:#edf2f7;
      --bg:#f7fbff;
      --surface:#ffffff;
      --surface-soft:#f8fafc;
      --shadow-sm:0 8px 20px rgba(15,23,42,.06);
      --shadow:0 18px 45px rgba(37,99,235,.12);
      --shadow-strong:0 26px 70px rgba(15,23,42,.14);
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --radius-xl:38px;
      --max:1180px;
      --nav-h:74px;
      --ease:all .22s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      line-height:1.75;
      background:
        radial-gradient(circle at 12% 0%, rgba(124,58,237,.13), transparent 30%),
        radial-gradient(circle at 86% 4%, rgba(6,182,212,.16), transparent 28%),
        linear-gradient(180deg,#ffffff 0%, var(--bg) 46%, #ffffff 100%);
      min-height:100vh;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:var(--primary);color:#fff}
    :focus-visible{
      outline:3px solid rgba(37,99,235,.28);
      outline-offset:3px;
      border-radius:10px;
    }

    .site-wrap{overflow:hidden}
    .container{
      width:min(calc(100% - 40px), var(--max));
      margin:0 auto;
    }
    .section{
      padding:88px 0;
      position:relative;
    }
    .section.compact{padding:62px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:32px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--primary-600);
      background:var(--primary-50);
      border:1px solid var(--primary-100);
      font-size:14px;
      font-weight:700;
      margin-bottom:14px;
    }
    .section-title{
      margin:0;
      color:var(--ink);
      font-size:clamp(28px,3vw,42px);
      line-height:1.18;
      letter-spacing:-.04em;
      font-weight:900;
    }
    .section-desc{
      max-width:620px;
      margin:12px 0 0;
      color:var(--muted);
      font-size:16px;
    }
    .section-side-note{
      max-width:310px;
      padding:14px 16px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      color:var(--muted);
      font-size:14px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),#4f46e5);
      box-shadow:0 16px 34px rgba(37,99,235,.25);
    }
    .btn-primary:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 22px 42px rgba(37,99,235,.31);
    }
    .btn-secondary{
      color:var(--primary-600);
      background:#fff;
      border-color:var(--primary-100);
      box-shadow:var(--shadow-sm);
    }
    .btn-secondary:hover{
      background:var(--primary-50);
      transform:translateY(-2px);
    }
    .btn-ghost{
      color:var(--ink);
      background:rgba(255,255,255,.68);
      border-color:rgba(226,232,240,.9);
    }
    .btn-ghost:hover{
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      font-weight:800;
      color:var(--primary-600);
      background:var(--primary-50);
      border:1px solid var(--primary-100);
    }
    .badge.purple{color:#6d28d9;background:var(--accent-soft);border-color:#e9d5ff}
    .badge.green{color:#15803d;background:#ecfdf5;border-color:#bbf7d0}
    .badge.gold{color:#b45309;background:#fffbeb;border-color:#fde68a}
    .card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(226,232,240,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
      border-color:rgba(191,219,254,.95);
    }

    .float-header{
      position:sticky;
      top:0;
      z-index:50;
      padding:18px 0 10px;
      backdrop-filter:blur(14px);
      -webkit-backdrop-filter:blur(14px);
    }
    .nav-shell{
      width:min(calc(100% - 40px), var(--max));
      min-height:var(--nav-h);
      margin:0 auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:12px 14px 12px 18px;
      border-radius:28px;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(226,232,240,.86);
      box-shadow:0 18px 45px rgba(15,23,42,.08);
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:44px;
      height:44px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:#fff;
      background:
        radial-gradient(circle at 30% 18%, rgba(255,255,255,.75), transparent 18%),
        linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 14px 28px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-title{
      color:var(--ink);
      font-weight:950;
      letter-spacing:-.03em;
      font-size:16px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:270px;
    }
    .brand-sub{font-size:12px;color:var(--muted);margin-top:4px}
    .nav-right{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      list-style:none;
      padding:0;
      margin:0;
    }
    .nav-menu a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:42px;
      padding:10px 15px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      font-weight:800;
    }
    .nav-menu a:hover,.nav-menu a.active{
      color:var(--primary-600);
      background:var(--primary-50);
    }
    .nav-search{
      width:230px;
      display:flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:var(--surface-soft);
      border:1px solid var(--line);
      color:var(--weak);
    }
    .nav-search input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--text);
      font-size:14px;
    }
    .nav-search input::placeholder{color:var(--weak)}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:0;
      border-radius:16px;
      color:var(--primary-600);
      background:var(--primary-50);
    }

    .hero{
      padding:54px 0 72px;
    }
    .hero-stage{
      position:relative;
      border-radius:42px;
      padding:34px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.96),rgba(239,246,255,.96)),
        radial-gradient(circle at 22% 22%,rgba(124,58,237,.22),transparent 30%),
        radial-gradient(circle at 80% 40%,rgba(6,182,212,.18),transparent 34%);
      border:1px solid rgba(219,234,254,.96);
      box-shadow:var(--shadow-strong);
      overflow:hidden;
    }
    .hero-stage:before{
      content:"";
      position:absolute;
      inset:auto -130px -140px auto;
      width:360px;
      height:360px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(37,99,235,.16),transparent 68%);
      pointer-events:none;
    }
    .hero-topline{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:28px;
      position:relative;
      z-index:1;
    }
    .hero-brand-chip{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:var(--primary-600);
      font-weight:850;
      box-shadow:var(--shadow-sm);
    }
    .hero-date{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:14px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(226,232,240,.9);
      padding:8px 12px;
      border-radius:999px;
    }
    .hero-bento{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:28px;
      align-items:stretch;
    }
    .hero-copy{
      padding:18px 6px 18px 4px;
    }
    h1{
      margin:0;
      color:var(--ink);
      font-size:clamp(38px,5vw,68px);
      line-height:1.04;
      letter-spacing:-.065em;
      font-weight:950;
      max-width:850px;
    }
    .hero-lead{
      max-width:730px;
      margin:22px 0 0;
      font-size:18px;
      color:#475569;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:14px;
      margin-top:28px;
    }
    .hero-points{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:12px;
      margin-top:28px;
      max-width:760px;
    }
    .hero-point{
      padding:15px;
      border-radius:20px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(226,232,240,.92);
    }
    .hero-point strong{
      display:block;
      color:var(--ink);
      font-size:18px;
      line-height:1.2;
      margin-bottom:6px;
    }
    .hero-point span{font-size:13px;color:var(--muted)}
    .fund-panel{
      display:grid;
      gap:16px;
    }
    .progress-card{
      padding:24px;
      border-radius:34px;
      background:linear-gradient(180deg,#fff,rgba(248,250,252,.96));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .progress-card-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      margin-bottom:18px;
    }
    .progress-card h2{
      margin:0;
      color:var(--ink);
      font-size:20px;
      font-weight:950;
      letter-spacing:-.03em;
    }
    .progress-ring-wrap{
      display:flex;
      align-items:center;
      justify-content:center;
      padding:6px 0 16px;
    }
    .progress-ring{
      --value:72;
      width:174px;
      height:174px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:
        conic-gradient(var(--primary) calc(var(--value)*1%), #e5edff 0);
      position:relative;
      box-shadow:inset 0 0 0 1px rgba(37,99,235,.08);
    }
    .progress-ring:after{
      content:"";
      position:absolute;
      width:128px;
      height:128px;
      border-radius:50%;
      background:#fff;
      box-shadow:inset 0 0 0 1px var(--line);
    }
    .progress-ring-content{
      position:relative;
      z-index:1;
      text-align:center;
    }
    .progress-ring-content strong{
      display:block;
      color:var(--ink);
      font-size:38px;
      line-height:1;
      font-weight:950;
      letter-spacing:-.05em;
    }
    .progress-ring-content span{font-size:13px;color:var(--muted)}
    .tier-list{
      display:grid;
      gap:10px;
    }
    .tier{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:13px 14px;
      border-radius:18px;
      background:var(--surface-soft);
      border:1px solid var(--line-soft);
    }
    .tier b{color:var(--ink)}
    .tier small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
    .tier em{
      font-style:normal;
      color:var(--primary-600);
      font-weight:900;
      white-space:nowrap;
    }
    .mini-float{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .mini-card{
      padding:18px;
      border-radius:24px;
      background:rgba(255,255,255,.82);
      border:1px solid rgba(226,232,240,.9);
      box-shadow:var(--shadow-sm);
    }
    .mini-card i{color:var(--primary);font-size:20px}
    .mini-card strong{
      display:block;
      margin-top:10px;
      color:var(--ink);
      font-size:22px;
      line-height:1;
      letter-spacing:-.04em;
    }
    .mini-card span{display:block;margin-top:6px;color:var(--muted);font-size:13px}

    .category-strip{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .category-lead{
      padding:30px;
      border-radius:var(--radius-xl);
      background:linear-gradient(135deg,#0f172a,#1e3a8a);
      color:#fff;
      position:relative;
      overflow:hidden;
      min-height:280px;
    }
    .category-lead:after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      border-radius:50%;
      right:-80px;bottom:-110px;
      background:rgba(147,197,253,.22);
    }
    .category-lead h2{
      position:relative;
      z-index:1;
      margin:18px 0 12px;
      font-size:34px;
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .category-lead p{
      position:relative;
      z-index:1;
      color:#dbeafe;
      max-width:620px;
      margin:0;
    }
    .category-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:16px;
    }
    .category-card{
      padding:22px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      min-height:132px;
      transition:var(--ease);
    }
    .category-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
    }
    .category-icon{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:15px;
      background:var(--primary-50);
      color:var(--primary-600);
      margin-bottom:14px;
    }
    .category-card h3{
      margin:0 0 6px;
      color:var(--ink);
      font-size:18px;
      font-weight:900;
    }
    .category-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}

    .resource-layout{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:24px;
      align-items:start;
    }
    .resource-feature{
      padding:28px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      position:sticky;
      top:110px;
    }
    .resource-feature h3{
      margin:16px 0 10px;
      color:var(--ink);
      font-size:27px;
      line-height:1.2;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .resource-feature p{margin:0;color:var(--muted)}
    .resource-meter{
      margin-top:24px;
      padding:18px;
      border-radius:22px;
      background:var(--primary-50);
      border:1px solid var(--primary-100);
    }
    .meter-line{
      height:10px;
      background:#dbeafe;
      border-radius:999px;
      overflow:hidden;
      margin:12px 0 10px;
    }
    .meter-line span{
      display:block;
      width:86%;
      height:100%;
      background:linear-gradient(90deg,var(--primary),var(--cyan));
      border-radius:999px;
    }
    .resource-list{
      display:grid;
      gap:14px;
    }
    .resource-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:16px;
      align-items:center;
      padding:18px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .resource-item:hover{
      transform:translateX(4px);
      border-color:#bfdbfe;
      box-shadow:var(--shadow);
    }
    .resource-num{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:15px;
      color:#fff;
      font-weight:950;
      background:linear-gradient(135deg,var(--primary),var(--accent));
    }
    .resource-item h3{
      margin:0 0 4px;
      color:var(--ink);
      font-size:18px;
      font-weight:900;
    }
    .resource-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
    .resource-arrow{
      width:36px;
      height:36px;
      display:grid;
      place-items:center;
      border-radius:50%;
      color:var(--primary-600);
      background:var(--primary-50);
      border:1px solid var(--primary-100);
    }

    .news-wrap{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:24px;
      align-items:start;
    }
    .news-panel{
      padding:10px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .news-list{
      list-style:none;
      margin:0;
      padding:0;
    }
    .news-list li+li{border-top:1px solid var(--line-soft)}
    .news-link{
      display:grid;
      grid-template-columns:112px 1fr auto;
      align-items:center;
      gap:16px;
      padding:18px;
      border-radius:22px;
    }
    .news-link:hover{
      background:var(--primary-50);
      color:inherit;
    }
    .news-date{
      color:var(--primary-600);
      font-weight:900;
      font-size:13px;
      background:#fff;
      border:1px solid var(--primary-100);
      border-radius:999px;
      padding:7px 10px;
      text-align:center;
    }
    .news-title{
      color:var(--ink);
      font-weight:900;
      line-height:1.4;
    }
    .news-summary{
      display:block;
      color:var(--muted);
      font-size:14px;
      margin-top:5px;
      line-height:1.55;
    }
    .recommend-box{
      padding:24px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg,#fff,#f8fbff);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .recommend-box h3{
      margin:0 0 14px;
      color:var(--ink);
      font-size:22px;
      font-weight:950;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:16px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:8px 12px;
      color:#475569;
      background:var(--surface-soft);
      border:1px solid var(--line);
      font-size:13px;
      font-weight:800;
    }
    .tag:hover{
      color:var(--primary-600);
      background:var(--primary-50);
      border-color:var(--primary-100);
    }

    .download-stage{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
      align-items:stretch;
    }
    .download-card{
      padding:30px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 88% 10%, rgba(37,99,235,.18), transparent 28%),
        linear-gradient(135deg,#ffffff,#f1f7ff);
      border:1px solid #dbeafe;
      box-shadow:var(--shadow);
    }
    .download-card h2,.material-card h2{
      margin:14px 0 12px;
      color:var(--ink);
      font-size:32px;
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .download-card p,.material-card p{margin:0;color:var(--muted)}
    .download-form{
      display:flex;
      gap:10px;
      margin-top:22px;
      padding:8px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:999px;
      box-shadow:var(--shadow-sm);
    }
    .download-form input{
      flex:1;
      min-width:0;
      border:0;
      outline:0;
      padding:0 12px;
      color:var(--text);
      background:transparent;
    }
    .form-tip{
      min-height:26px;
      margin-top:12px;
      color:var(--green);
      font-size:14px;
      font-weight:800;
    }
    .material-card{
      padding:30px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .material-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:12px;
      margin-top:22px;
    }
    .material-item{
      padding:16px;
      border-radius:20px;
      background:var(--surface-soft);
      border:1px solid var(--line-soft);
    }
    .material-item i{color:var(--primary-600)}
    .material-item strong{
      display:block;
      margin-top:8px;
      color:var(--ink);
      font-weight:900;
    }
    .material-item span{
      display:block;
      color:var(--muted);
      font-size:13px;
      margin-top:4px;
      line-height:1.55;
    }

    .guarantee-bar{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
    }
    .guarantee-card{
      padding:22px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .guarantee-card .icon{
      width:46px;height:46px;
      display:grid;place-items:center;
      border-radius:17px;
      background:var(--primary-50);
      color:var(--primary-600);
      margin-bottom:15px;
    }
    .guarantee-card h3{
      margin:0 0 8px;
      color:var(--ink);
      font-size:18px;
      font-weight:950;
    }
    .guarantee-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.68}

    .change-log{
      display:grid;
      gap:14px;
      max-width:940px;
      margin:0 auto;
      position:relative;
    }
    .change-item{
      display:grid;
      grid-template-columns:150px 1fr;
      gap:22px;
      align-items:start;
      padding:22px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .change-time{
      color:var(--primary-600);
      font-weight:950;
    }
    .change-item h3{
      margin:0 0 6px;
      color:var(--ink);
      font-size:19px;
      font-weight:950;
    }
    .change-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}

    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .faq-item{
      padding:24px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .faq-item h3{
      display:flex;
      gap:10px;
      align-items:flex-start;
      margin:0 0 10px;
      color:var(--ink);
      font-size:18px;
      font-weight:950;
      line-height:1.45;
    }
    .faq-item h3 i{
      color:var(--primary-600);
      margin-top:4px;
    }
    .faq-item p{margin:0;color:var(--muted);font-size:15px;line-height:1.75}

    .join-stage{
      border-radius:42px;
      padding:34px;
      background:
        linear-gradient(135deg,#0f172a,#1d4ed8),
        radial-gradient(circle at 70% 20%,rgba(255,255,255,.22),transparent 30%);
      color:#fff;
      box-shadow:var(--shadow-strong);
      overflow:hidden;
      position:relative;
    }
    .join-stage:before{
      content:"";
      position:absolute;
      width:380px;height:380px;
      right:-150px;top:-160px;
      background:rgba(147,197,253,.18);
      border-radius:50%;
    }
    .join-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr .8fr;
      gap:30px;
      align-items:center;
    }
    .join-stage h2{
      margin:12px 0 14px;
      color:#fff;
      font-size:clamp(30px,4vw,48px);
      line-height:1.12;
      letter-spacing:-.05em;
      font-weight:950;
    }
    .join-stage p{color:#dbeafe;margin:0;max-width:680px}
    .commission-cards{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
      margin-top:24px;
    }
    .commission-card{
      padding:16px;
      border-radius:22px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(10px);
    }
    .commission-card strong{
      display:block;
      color:#fff;
      font-size:22px;
      font-weight:950;
    }
    .commission-card span{display:block;color:#bfdbfe;font-size:13px;margin-top:4px;line-height:1.55}
    .settle-box{
      padding:22px;
      border-radius:28px;
      background:rgba(255,255,255,.94);
      color:var(--text);
      box-shadow:0 22px 50px rgba(0,0,0,.18);
    }
    .settle-box h3{
      margin:0 0 14px;
      color:var(--ink);
      font-size:22px;
      font-weight:950;
    }
    .settle-list{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:12px;
    }
    .settle-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
      font-size:14px;
    }
    .settle-list i{color:var(--green);margin-top:5px}
    .join-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .join-actions .btn-secondary{background:#fff;color:var(--primary-600)}

    .site-footer{
      padding:44px 0 34px;
      background:#fff;
      border-top:1px solid var(--line);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:30px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .footer-brand strong{
      color:var(--ink);
      font-size:18px;
      font-weight:950;
    }
    .footer-desc{
      max-width:660px;
      color:var(--muted);
      margin:0;
      font-size:14px;
    }
    .footer-links{
      display:flex;
      justify-content:flex-end;
      flex-wrap:wrap;
      gap:10px;
    }
    .footer-links a{
      padding:8px 12px;
      border-radius:999px;
      color:var(--muted);
      background:var(--surface-soft);
      border:1px solid var(--line);
      font-size:13px;
      font-weight:800;
    }
    .footer-links a:hover{
      color:var(--primary-600);
      background:var(--primary-50);
      border-color:var(--primary-100);
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      margin-top:30px;
      padding-top:18px;
      border-top:1px solid var(--line-soft);
      color:var(--weak);
      font-size:13px;
    }

    .float-cta{
      position:fixed;
      left:50%;
      bottom:20px;
      transform:translateX(-50%);
      z-index:40;
      width:min(calc(100% - 28px), 760px);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 14px 12px 18px;
      border-radius:999px;
      background:rgba(15,23,42,.88);
      color:#fff;
      box-shadow:0 18px 50px rgba(15,23,42,.24);
      backdrop-filter:blur(14px);
      border:1px solid rgba(255,255,255,.12);
    }
    .float-cta span{
      font-weight:850;
      font-size:14px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .float-cta .btn{
      min-height:38px;
      padding:10px 14px;
      font-size:13px;
      background:#fff;
      color:var(--primary-600);
    }

    @media (max-width:1024px){
      .nav-search{display:none}
      .hero-bento,.category-strip,.resource-layout,.news-wrap,.download-stage,.join-content{grid-template-columns:1fr}
      .resource-feature{position:relative;top:auto}
      .guarantee-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
      .hero-points{grid-template-columns:repeat(3,minmax(0,1fr))}
      .category-lead{min-height:auto}
    }
    @media (max-width:768px){
      .container,.nav-shell{width:min(calc(100% - 24px), var(--max))}
      .float-header{padding-top:10px}
      .nav-shell{border-radius:22px;align-items:flex-start;flex-wrap:wrap}
      .brand-title{max-width:180px}
      .menu-toggle{display:grid;place-items:center}
      .nav-right{
        width:100%;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:10px;
        padding-top:12px;
        border-top:1px solid var(--line-soft);
      }
      .nav-shell.open .nav-right{display:flex}
      .nav-menu{width:100%;display:grid;grid-template-columns:1fr}
      .nav-menu a{justify-content:center;background:var(--surface-soft)}
      .nav-right .btn{width:100%}
      .hero{padding-top:28px}
      .hero-stage,.join-stage{border-radius:30px;padding:24px}
      .hero-topline{align-items:flex-start;flex-direction:column}
      .hero-points,.mini-float,.commission-cards,.faq-grid{grid-template-columns:1fr}
      .category-grid,.material-grid{grid-template-columns:1fr}
      .news-link{grid-template-columns:1fr;gap:8px}
      .news-date{width:max-content}
      .resource-item{grid-template-columns:auto 1fr}
      .resource-arrow{display:none}
      .download-form{border-radius:22px;flex-direction:column;align-items:stretch}
      .download-form input{min-height:42px}
      .guarantee-bar{grid-template-columns:1fr}
      .change-item{grid-template-columns:1fr;gap:8px}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
      .section-head{display:block}
      .section-side-note{margin-top:18px}
      .float-cta{display:none}
    }
    @media (max-width:520px){
      .section{padding:64px 0}
      h1{font-size:36px;letter-spacing:-.045em}
      .hero-lead{font-size:16px}
      .hero-actions .btn{width:100%}
      .progress-ring{width:150px;height:150px}
      .progress-ring:after{width:110px;height:110px}
      .tier{align-items:flex-start;flex-direction:column}
      .section-title{font-size:28px}
      .category-lead h2,.download-card h2,.material-card h2{font-size:28px}
      .mini-card strong{font-size:20px}
    }