:root{
      --bg0:#fbf7f1;
      --bg1:#f4efe6;
      --card:#ffffff;
      --ink:#1f2937;
      --muted:#5b6472;
      --line:rgba(31,41,55,.12);
      --brand:#7a4cff;
      --brand2:#ff6a3d;
      --shadow:0 10px 30px rgba(17,24,39,.08);
      --shadow2:0 8px 18px rgba(122,76,255,.12);
      --radius:18px;
      --radius2:14px;
      --container:1120px;
    }
    *{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 15% -10%, rgba(122,76,255,.12), transparent 55%),
        radial-gradient(900px 520px at 90% 10%, rgba(255,106,61,.10), transparent 45%),
        linear-gradient(180deg, var(--bg0), var(--bg1));
      overflow-x:hidden;
    }
    a{color:inherit}
    .container{
      max-width:var(--container);
      margin:0 auto;
      padding:0 20px;
    }

    header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(140%) blur(10px);
      background:rgba(251,247,241,.72);
      border-bottom:1px solid rgba(31,41,55,.08);
    }
    .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:110px;
    }
    .logo{
      width:36px;height:36px;
      border-radius:12px;
      background:linear-gradient(135deg, rgba(122,76,255,.18), rgba(255,106,61,.15));
      border:1px solid rgba(31,41,55,.12);
      display:flex;align-items:center;justify-content:center;
      box-shadow:var(--shadow2);
      font-weight:800;
      letter-spacing:.5px;
    }
    .brand-name{
      display:flex;flex-direction:column;line-height:1.1;
    }
    .brand-name strong{font-size:14px}
    .brand-name span{font-size:12px;color:var(--muted)}
    nav{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links a{
      text-decoration:none;
      padding:8px 10px;
      border-radius:12px;
      border:1px solid transparent;
      color:rgba(31,41,55,.86);
      font-size:13px;
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
    }
    .nav-links a:hover{
      background:rgba(122,76,255,.08);
      border-color:rgba(122,76,255,.18);
      transform:translateY(-1px);
    }
    .cta{
      display:flex;align-items:center;gap:10px;
    }
    .btn{
      appearance:none;
      border:1px solid rgba(31,41,55,.14);
      background:rgba(255,255,255,.75);
      color:var(--ink);
      border-radius:14px;
      padding:10px 12px;
      font-size:13px;
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      gap:8px;
      transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .btn:hover{
      transform:translateY(-1px);
      box-shadow:0 10px 22px rgba(31,41,55,.10);
      border-color:rgba(122,76,255,.22);
      background:#fff;
    }
    .btn-primary{
      border-color:rgba(122,76,255,.32);
      background:linear-gradient(135deg, rgba(122,76,255,.16), rgba(255,106,61,.10));
    }

    .mobile-toggle{
      display:none;
      width:42px;height:42px;
      border-radius:14px;
      border:1px solid rgba(31,41,55,.14);
      background:rgba(255,255,255,.7);
      align-items:center;justify-content:center;
      cursor:pointer;
      transition:transform .15s ease, background .15s ease;
    }
    .mobile-toggle:hover{transform:translateY(-1px);background:#fff}
    .hamburger{
      width:18px;height:12px; position:relative;
    }
    .hamburger span{
      position:absolute;left:0;right:0;height:2px;background:rgba(31,41,55,.72);border-radius:2px;
      transition:transform .2s ease, top .2s ease, opacity .2s ease;
    }
    .hamburger span:nth-child(1){top:0}
    .hamburger span:nth-child(2){top:5px}
    .hamburger span:nth-child(3){top:10px}
    .mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(1){top:5px;transform:rotate(45deg)}
    .mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(2){opacity:0}
    .mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(3){top:5px;transform:rotate(-45deg)}

    .mobile-menu{
      display:none;
      padding-bottom:12px;
    }
    .mobile-menu .mobile-links{
      display:flex;flex-direction:column;gap:10px;
      padding:10px 0;
    }
    .mobile-menu a{
      text-decoration:none;
      border:1px solid rgba(31,41,55,.12);
      background:rgba(255,255,255,.72);
      padding:12px 12px;
      border-radius:14px;
      font-size:14px;
      transition:transform .15s ease, background .15s ease;
    }
    .mobile-menu a:hover{transform:translateY(-1px);background:#fff}

    main{padding:22px 0 26px}
    .hero{
      padding:26px 0 18px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.25fr .75fr;
      gap:18px;
      align-items:stretch;
    }
    .hero-card{
      position:relative;
      border-radius:var(--radius);
      border:1px solid rgba(31,41,55,.10);
      background:
        radial-gradient(900px 260px at 20% 0%, rgba(122,76,255,.14), transparent 60%),
        radial-gradient(700px 240px at 85% 20%, rgba(255,106,61,.12), transparent 55%),
        rgba(255,255,255,.74);
      box-shadow:var(--shadow);
      padding:22px;
      overflow:hidden;
      transform: translateZ(0);
    }
    .hero-card::after{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(420px 240px at 15% 15%, rgba(122,76,255,.18), transparent 60%),
        radial-gradient(360px 220px at 85% 30%, rgba(255,106,61,.14), transparent 55%);
      pointer-events:none;
      opacity:.55;
      transition:opacity .25s ease;
    }
    .hero-card:hover::after{opacity:.75}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-size:12px;
      color:rgba(31,41,55,.78);
      background:rgba(255,255,255,.65);
      border:1px solid rgba(31,41,55,.10);
      padding:8px 10px;
      border-radius:999px;
      position:relative;
      z-index:1;
    }
    .dot{
      width:8px;height:8px;border-radius:99px;
      background:linear-gradient(135deg, var(--brand), var(--brand2));
      box-shadow:0 0 0 4px rgba(122,76,255,.12);
    }
    h1{
      position:relative; z-index:1;
      margin:14px 0 10px;
      font-size:30px;
      line-height:1.25;
      letter-spacing:-.4px;
    }
    .lead{
      position:relative; z-index:1;
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.7;
      max-width:62ch;
    }
    .hero-actions{
      position:relative; z-index:1;
      display:flex; gap:12px; flex-wrap:wrap;
      margin-top:16px;
      align-items:center;
    }
    .pill{
      font-size:13px;
      color:rgba(31,41,55,.86);
      padding:10px 12px;
      border-radius:14px;
      background:rgba(255,255,255,.7);
      border:1px solid rgba(31,41,55,.12);
      display:flex; gap:10px; align-items:center;
    }
    .pill svg{flex:0 0 auto}
    .side-card{
      border-radius:var(--radius);
      border:1px solid rgba(31,41,55,.10);
      background:rgba(255,255,255,.72);
      box-shadow:0 14px 30px rgba(31,41,55,.07);
      padding:18px;
      display:flex; flex-direction:column; gap:12px;
    }
    .side-title{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
    }
    .side-title h2{
      margin:0;
      font-size:14px;
      letter-spacing:.2px;
    }
    .badge{
      font-size:12px;
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(122,76,255,.25);
      background:rgba(122,76,255,.10);
      color:rgba(71,39,170,.98);
      white-space:nowrap;
    }
    .mini-list{
      margin:0;
      padding:0;
      list-style:none;
      display:flex; flex-direction:column; gap:10px;
    }
    .mini-list li{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(31,41,55,.10);
      background:rgba(255,255,255,.75);
      transition:transform .15s ease, border-color .15s ease, background .15s ease;
    }
    .mini-list li:hover{
      transform:translateY(-1px);
      border-color:rgba(122,76,255,.22);
      background:#fff;
    }
    .check{
      width:20px;height:20px; border-radius:8px;
      background:linear-gradient(135deg, rgba(122,76,255,.20), rgba(255,106,61,.14));
      border:1px solid rgba(31,41,55,.10);
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      margin-top:2px;
    }
    .mini-list b{font-size:13px}
    .mini-list span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}

    .content-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:16px;
      margin-top:14px;
    }
    .card{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(31,41,55,.10);
      border-radius:var(--radius);
      box-shadow:0 14px 30px rgba(31,41,55,.05);
      padding:18px;
    }
    .section-title{
      margin:0 0 10px;
      font-size:16px;
      letter-spacing:.1px;
    }
    .toc{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:10px;
    }
    .toc a{
      text-decoration:none;
      font-size:13px;
      color:rgba(31,41,55,.86);
      border:1px solid rgba(31,41,55,.12);
      background:rgba(255,255,255,.75);
      padding:10px 12px;
      border-radius:14px;
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
    }
    .toc a:hover{
      transform:translateY(-1px);
      background:#fff;
      border-color:rgba(122,76,255,.22);
    }

    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:start;
    }
    .step{
      padding:14px;
      border-radius:var(--radius2);
      border:1px solid rgba(31,41,55,.10);
      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(255,106,61,.22);
      background:#fff;
    }
    .step h3{
      margin:0 0 8px;
      font-size:14px;
      letter-spacing:.1px;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
    }

    .list{
      margin:0;
      padding:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .list li{
      border:1px solid rgba(31,41,55,.10);
      background:rgba(255,255,255,.72);
      border-radius:var(--radius2);
      padding:12px;
      display:flex;
      gap:12px;
      align-items:flex-start;
    }
    .num{
      width:26px;height:26px;border-radius:10px;
      border:1px solid rgba(31,41,55,.12);
      background:linear-gradient(135deg, rgba(122,76,255,.16), rgba(255,106,61,.10));
      display:flex;align-items:center;justify-content:center;
      font-weight:800;
      font-size:12px;
      flex:0 0 auto;
      margin-top:2px;
    }
    .list b{font-size:13px}
    .list span{display:block;color:var(--muted);font-size:13px;line-height:1.65;margin-top:3px}

    details{
      border:1px solid rgba(31,41,55,.10);
      background:rgba(255,255,255,.72);
      border-radius:var(--radius2);
      padding:10px 12px;
      overflow:hidden;
      transition:border-color .15s ease, background .15s ease;
    }
    details[open]{background:#fff;border-color:rgba(122,76,255,.24)}
    summary{
      cursor:pointer;
      list-style:none;
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      font-size:14px;
      font-weight:700;
      padding:2px 0;
    }
    summary::-webkit-details-marker{display:none}
    .chev{
      width:34px;height:34px;border-radius:12px;
      border:1px solid rgba(31,41,55,.12);
      background:rgba(255,255,255,.75);
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      transition:transform .18s ease;
    }
    details[open] .chev{transform:rotate(180deg);border-color:rgba(122,76,255,.22)}
    .faq-body{
      padding:10px 0 4px;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }

    .summary{
      margin-top:8px;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }
    .inline-links{
      margin-top:10px;
      display:flex; flex-wrap:wrap; gap:10px;
    }
    .inline-links a{
      text-decoration:none;
      font-size:13px;
      border-radius:14px;
      padding:10px 12px;
      border:1px solid rgba(31,41,55,.12);
      background:rgba(255,255,255,.75);
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
    }
    .inline-links a:hover{
      transform:translateY(-1px);
      background:#fff;
      border-color:rgba(255,106,61,.22);
    }

    figure{
      margin:0;
      border-radius:var(--radius);
      border:1px solid rgba(31,41,55,.10);
      background:rgba(255,255,255,.72);
      padding:12px;
      overflow:hidden;
    }
    .media{
      display:block;
      width:100%;
      border-radius:14px;
      background:linear-gradient(135deg, rgba(122,76,255,.10), rgba(255,106,61,.08));
      border:1px dashed rgba(31,41,55,.18);
    }
    .media img{
      width:100%;
      height:auto;
      display:block;
      object-fit:contain;
      filter:saturate(1.02);
    }
    .figcap{
      margin-top:10px;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
      padding:0 4px 4px;
    }

    footer{
      background:rgba(255,255,255,.65);
      border-top:1px solid rgba(31,41,55,.10);
      padding:16px 0;
      color:#1f2937;
    }
    .footer-wrap{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .foot-left{
      min-width:220px;
    }
    .foot-title{
      display:flex;gap:10px;align-items:center;
      margin-bottom:8px;
    }
    .foot-title .logo{width:32px;height:32px;border-radius:11px}
    .foot-title strong{font-size:14px}
    .foot-title span{font-size:12px;color:var(--muted);display:block;margin-top:3px}
    .copyright{
      font-size:12px;color:var(--muted);line-height:1.7;
      margin:0;
    }
    .foot-right{
      display:flex;gap:12px;align-items:center;justify-content:flex-end;flex-wrap:wrap;
    }
    .foot-links{
      display:flex;gap:10px;flex-wrap:wrap;
    }
    .foot-links a{
      text-decoration:none;
      font-size:13px;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(31,41,55,.12);
      background:rgba(255,255,255,.7);
      transition:transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .foot-links a:hover{
      transform:translateY(-1px);
      background:#fff;
      border-color:rgba(122,76,255,.22);
    }

    .reveal{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .5s ease, transform .5s ease;
    }
    .reveal.show{
      opacity:1;
      transform: translateY(0);
    }

    @media (max-width: 920px){
      .hero-grid{grid-template-columns: 1fr}
      .grid-2{grid-template-columns: 1fr}
      h1{font-size:26px}
      .nav-links{display:none}
      .mobile-toggle{display:flex}
      .mobile-menu{display:none}
      .mobile-menu.open{display:block}
    }
    @media (prefers-reduced-motion: reduce){
      *{scroll-behavior:auto !important}
      .reveal{transition:none}
    }