:root{
      --bg:#f7f2e6;
      --paper:#ffffff;
      --ink:#1f2328;
      --muted:#5b6470;
      --line:rgba(31,35,40,.12);
      --shadow:0 14px 40px rgba(31,35,40,.10);
      --accent:#b05a2b;
      --accent2:#2a6f7b;
      --ring:rgba(176,90,43,.22);
      --radius:18px;
      --radius2:22px;
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color:var(--ink);
      background:
        radial-gradient(1200px 600px at 20% -10%, rgba(176,90,43,.18), transparent 55%),
        radial-gradient(900px 520px at 90% 0%, rgba(42,111,123,.16), transparent 60%),
        linear-gradient(180deg, #fbf7ee 0%, var(--bg) 55%, #f7f4ea 100%);
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:1120px;
      padding:0 18px;
      margin:0 auto;
    }
    header{
      position:sticky;
      top:0;
      z-index:30;
      backdrop-filter:saturate(1.2) blur(10px);
      background:rgba(247,242,230,.72);
      border-bottom:1px solid rgba(31,35,40,.10);
    }
    .nav-wrap{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:120px;
    }
    .logo{
      width:38px;height:38px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(176,90,43,.95), rgba(42,111,123,.75));
      box-shadow:0 10px 24px rgba(176,90,43,.18);
      color:#fff;
      font-weight:900;
      letter-spacing:.5px;
      user-select:none;
    }
    .brand-title{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-title strong{font-size:14px}
    .brand-title span{font-size:12px;color:var(--muted)}
    nav .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .pill{
      text-decoration:none;
      font-size:13px;
      color:var(--muted);
      border:1px solid rgba(31,35,40,.14);
      padding:8px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.55);
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .pill:hover{
      transform:translateY(-1px);
      border-color:rgba(176,90,43,.35);
      background:rgba(255,255,255,.78);
      color:#2a2f36;
    }
    .cta{
      display:flex;
      align-items:center;
      gap:10px;
      justify-content:flex-end;
      min-width:190px;
    }
    .btn{
      appearance:none;
      border:1px solid rgba(31,35,40,.14);
      background:rgba(255,255,255,.65);
      color:#1f2328;
      border-radius:14px;
      padding:10px 12px;
      font-weight:700;
      font-size:13px;
      cursor:pointer;
      transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
      box-shadow:0 10px 24px rgba(31,35,40,.06);
      white-space:nowrap;
    }
    .btn:hover{
      transform:translateY(-1px);
      border-color:rgba(176,90,43,.38);
      box-shadow:0 16px 36px rgba(31,35,40,.10);
      background:rgba(255,255,255,.82);
    }
    .btn-primary{
      border-color:rgba(176,90,43,.35);
      background:linear-gradient(180deg, rgba(176,90,43,.16), rgba(176,90,43,.06));
      position:relative;
      overflow:hidden;
    }
    .btn-primary::after{
      content:"";
      position:absolute; inset:-2px;
      background:radial-gradient(520px 120px at 10% 0%, rgba(176,90,43,.35), transparent 60%),
                 radial-gradient(420px 120px at 90% 0%, rgba(42,111,123,.28), transparent 55%);
      opacity:.7;
      pointer-events:none;
    }
    .hero{
      padding:26px 0 18px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:16px;
      align-items:stretch;
    }
    .hero-card{
      background:linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.70));
      border:1px solid rgba(31,35,40,.12);
      border-radius:var(--radius2);
      box-shadow:var(--shadow);
      padding:18px;
      position:relative;
      overflow:hidden;
    }
    .hero-card::before{
      content:"";
      position:absolute;
      width:620px; height:240px;
      right:-220px; top:-80px;
      background:radial-gradient(circle at 30% 50%, rgba(176,90,43,.28), transparent 60%),
                 radial-gradient(circle at 70% 40%, rgba(42,111,123,.22), transparent 58%);
      transform:rotate(-8deg);
      pointer-events:none;
    }
    .kicker{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap;
      position:relative;
      z-index:1;
    }
    .kicker .tag{
      font-size:12px;
      padding:6px 10px;
      border-radius:999px;
      border:1px solid rgba(31,35,40,.14);
      background:rgba(255,255,255,.65);
      color:var(--muted);
    }
    .kicker .dot{
      width:10px;height:10px;border-radius:50%;
      background:linear-gradient(180deg, rgba(176,90,43,.95), rgba(42,111,123,.7));
      box-shadow:0 0 0 6px rgba(176,90,43,.14);
    }
    h1{
      margin:12px 0 10px;
      font-size:28px;
      line-height:1.25;
      letter-spacing:-.2px;
      position:relative;
      z-index:1;
    }
    .lead{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
      position:relative;
      z-index:1;
      max-width:62ch;
    }
    .hero-actions{
      margin-top:14px;
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .small-link{
      text-decoration:none;
      font-weight:700;
      font-size:13px;
      color:var(--accent2);
      border-bottom:1px dashed rgba(42,111,123,.45);
      padding-bottom:2px;
      transition:opacity .15s ease, transform .15s ease;
    }
    .small-link:hover{transform:translateY(-1px)}
    .side-card{
      background:rgba(255,255,255,.72);
      border:1px solid rgba(31,35,40,.12);
      border-radius:var(--radius2);
      padding:16px;
      box-shadow:0 10px 28px rgba(31,35,40,.08);
      display:flex;
      flex-direction:column;
      gap:12px;
      overflow:hidden;
      position:relative;
    }
    .side-card::before{
      content:"";
      position:absolute;
      inset:-2px;
      background:
        linear-gradient(135deg, rgba(176,90,43,.12), transparent 42%),
        linear-gradient(225deg, rgba(42,111,123,.10), transparent 40%);
      pointer-events:none;
    }
    .side-title{
      position:relative; z-index:1;
      margin:0;
      font-size:14px;
      color:#2a2f36;
      letter-spacing:.2px;
    }
    .checklist{
      position:relative; z-index:1;
      margin:0;
      padding:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .checklist li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(31,35,40,.10);
      background:rgba(255,255,255,.60);
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
    }
    .checklist li:hover{
      transform:translateY(-1px);
      border-color:rgba(176,90,43,.28);
      background:rgba(255,255,255,.78);
    }
    .ic{
      width:22px;height:22px;border-radius:8px;
      display:grid;place-items:center;
      background:linear-gradient(180deg, rgba(176,90,43,.18), rgba(42,111,123,.10));
      border:1px solid rgba(31,35,40,.10);
      flex:0 0 auto;
      margin-top:1px;
    }
    .checklist strong{font-size:13px}
    .checklist span{display:block;font-size:12px;color:var(--muted);margin-top:2px;line-height:1.45}

    main{padding:10px 0 30px}
    .section{
      margin-top:14px;
      background:rgba(255,255,255,.65);
      border:1px solid rgba(31,35,40,.12);
      border-radius:var(--radius2);
      box-shadow:0 10px 28px rgba(31,35,40,.06);
      overflow:hidden;
    }
    .section-inner{
      padding:16px;
    }
    .section-title{
      margin:0 0 10px;
      font-size:16px;
      letter-spacing:-.1px;
    }
    .toc{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:10px;
    }
    .toc a{
      display:flex;
      flex-direction:column;
      gap:6px;
      text-decoration:none;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(31,35,40,.12);
      background:rgba(255,255,255,.72);
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
      min-height:88px;
      position:relative;
      overflow:hidden;
    }
    .toc a::after{
      content:"";
      position:absolute; right:-40px; top:-40px;
      width:90px; height:90px;
      background:radial-gradient(circle at 35% 35%, rgba(176,90,43,.22), transparent 60%);
      opacity:.8;
      pointer-events:none;
    }
    .toc a:hover{
      transform:translateY(-2px);
      border-color:rgba(176,90,43,.32);
      background:rgba(255,255,255,.86);
    }
    .toc .num{
      font-size:12px;
      color:var(--accent);
      font-weight:900;
    }
    .toc .label{
      font-weight:900;
      font-size:13px;
      line-height:1.35;
    }
    .toc .desc{
      font-size:12px;color:var(--muted);line-height:1.45
    }

    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
    }
    .card{
      background:rgba(255,255,255,.72);
      border:1px solid rgba(31,35,40,.12);
      border-radius:var(--radius);
      padding:14px;
      box-shadow:0 10px 22px rgba(31,35,40,.05);
      position:relative;
      overflow:hidden;
    }
    .card h2{
      margin:0 0 8px;
      font-size:15px;
      letter-spacing:-.1px;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }
    .card .list{
      margin:10px 0 0;
      padding:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .row-item{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(31,35,40,.10);
      background:rgba(255,255,255,.62);
    }
    .row-item .bullet{
      width:22px;height:22px;border-radius:9px;
      display:grid;place-items:center;
      background:linear-gradient(180deg, rgba(42,111,123,.16), rgba(176,90,43,.10));
      border:1px solid rgba(31,35,40,.10);
      flex:0 0 auto;
      margin-top:1px;
      color:#174a55;
      font-weight:900;
      font-size:12px;
    }
    .row-item strong{
      font-size:13px;
      display:block;
      margin-top:1px;
    }
    .row-item span{
      display:block;
      font-size:12px;color:var(--muted);
      line-height:1.55;
      margin-top:3px;
    }

    .steps{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .step{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(31,35,40,.12);
      background:rgba(255,255,255,.72);
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
    }
    .step:hover{
      transform:translateY(-1px);
      border-color:rgba(42,111,123,.28);
      background:rgba(255,255,255,.86);
    }
    .step .badge{
      width:30px;height:30px;border-radius:12px;
      display:grid;place-items:center;
      background:linear-gradient(180deg, rgba(176,90,43,.16), rgba(42,111,123,.10));
      border:1px solid rgba(31,35,40,.10);
      font-weight:900;
      color:var(--accent);
      flex:0 0 auto;
      margin-top:1px;
    }
    .step .content strong{display:block;font-size:13px}
    .step .content span{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:4px}

    details.faq{
      border:1px solid rgba(31,35,40,.12);
      background:rgba(255,255,255,.72);
      border-radius:var(--radius);
      padding:12px 14px;
      box-shadow:0 10px 22px rgba(31,35,40,.05);
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
    }
    details.faq[open]{
      border-color:rgba(176,90,43,.30);
      background:rgba(255,255,255,.88);
      transform:translateY(-1px);
    }
    details.faq summary{
      cursor:pointer;
      list-style:none;
      display:flex;
      align-items:flex-start;
      gap:10px;
      user-select:none;
    }
    details.faq summary::-webkit-details-marker{display:none}
    .qicon{
      width:24px;height:24px;border-radius:10px;
      border:1px solid rgba(31,35,40,.10);
      background:linear-gradient(180deg, rgba(42,111,123,.14), rgba(176,90,43,.08));
      display:grid;place-items:center;
      font-weight:900;color:#174a55;flex:0 0 auto;margin-top:1px;
    }
    details.faq summary strong{
      font-size:13px;
      line-height:1.45;
    }
    details.faq .ans{
      margin-top:10px;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    details.faq .ans .inline{
      display:inline;
      color:#2a2f36;
      font-weight:800;
    }

    .end{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .end .note{
      border:1px dashed rgba(176,90,43,.35);
      background:linear-gradient(180deg, rgba(176,90,43,.10), rgba(176,90,43,.04));
      padding:12px 14px;
      border-radius:16px;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }

    .inner-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:10px;
    }
    .inner-links a{
      text-decoration:none;
      border:1px solid rgba(31,35,40,.14);
      background:rgba(255,255,255,.68);
      border-radius:999px;
      padding:10px 12px;
      font-size:13px;
      color:#2a2f36;
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
      white-space:nowrap;
    }
    .inner-links a:hover{
      transform:translateY(-1px);
      border-color:rgba(42,111,123,.30);
      background:rgba(255,255,255,.86);
    }

    footer{
      background:#1f2328;
      color:#e9edf2;
      margin-top:14px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-wrap{
      padding:18px 0 14px;
    }
    .footer-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .foot-brand{
      display:flex; gap:12px; align-items:center;
    }
    .foot-logo{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg, rgba(176,90,43,.95), rgba(42,111,123,.78));
      display:grid;place-items:center;
      font-weight:900;color:#fff;
      box-shadow:0 18px 38px rgba(176,90,43,.24);
    }
    .foot-brand strong{display:block;font-size:14px}
    .foot-brand span{display:block;color:rgba(233,237,242,.75);font-size:12px;margin-top:3px;line-height:1.5}
    .foot-links{
      display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end;
    }
    .foot-links a{
      text-decoration:none;
      color:rgba(233,237,242,.92);
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.06);
      padding:10px 12px;
      border-radius:999px;
      font-size:13px;
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .foot-links a:hover{
      transform:translateY(-1px);
      background:rgba(255,255,255,.10);
      border-color:rgba(255,255,255,.22);
    }
    .copy{
      margin-top:14px;
      padding-top:14px;
      border-top:1px solid rgba(255,255,255,.10);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      flex-wrap:wrap;
      color:rgba(233,237,242,.78);
      font-size:12px;
    }
    .backtop{
      text-decoration:none;
      color:#1f2328;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      padding:10px 12px;
      font-weight:900;
      font-size:12px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      transition:transform .15s ease, background .15s ease;
    }
    .backtop:hover{transform:translateY(-1px);background:rgba(255,255,255,.96)}
    .toast{
      position:fixed;
      left:50%;
      bottom:16px;
      transform:translateX(-50%);
      background:rgba(31,35,40,.92);
      color:#fff;
      border:1px solid rgba(255,255,255,.14);
      padding:10px 12px;
      border-radius:14px;
      box-shadow:0 18px 60px rgba(0,0,0,.25);
      font-size:13px;
      opacity:0;
      pointer-events:none;
      transition:opacity .18s ease, transform .18s ease;
      z-index:100;
      max-width: calc(100vw - 28px);
    }
    .toast.show{
      opacity:1;
      transform:translateX(-50%) translateY(-4px);
    }

    @media (max-width: 920px){
      .hero-grid{grid-template-columns:1fr}
      .cta{min-width:auto}
      .toc{grid-template-columns:1fr; }
      .grid-2{grid-template-columns:1fr}
    }
    @media (prefers-reduced-motion: reduce){
      *{scroll-behavior:auto !important}
      .pill,.btn,.toc a,.checklist li,.step,.inner-links a,details.faq{transition:none !important}
    }