:root{
      --bg0:#f6f2ea;
      --bg1:#ffffff;
      --text:#1f2937;
      --muted:#4b5563;
      --muted2:#6b7280;
      --card:#ffffffb8;
      --card2:#ffffff;
      --stroke:rgba(17,24,39,.12);
      --stroke2:rgba(17,24,39,.10);
      --shadow: 0 14px 40px rgba(17,24,39,.10);
      --shadow2: 0 10px 26px rgba(17,24,39,.08);
      --brand1:#3b82f6;
      --brand2:#8b5cf6;
      --brand3:#f97316;
      --good:#16a34a;
      --warn:#f59e0b;
      --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, Helvetica, Arial, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans", sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 600px at 10% -10%, rgba(59,130,246,.18) 0%, rgba(59,130,246,0) 55%),
        radial-gradient(900px 520px at 95% 0%, rgba(139,92,246,.16) 0%, rgba(139,92,246,0) 52%),
        radial-gradient(800px 520px at 70% 110%, rgba(249,115,22,.12) 0%, rgba(249,115,22,0) 55%),
        linear-gradient(180deg, var(--bg0) 0%, #fff 45%, #fff 100%);
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }

    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(140%) blur(10px);
      background: rgba(246,242,234,.72);
      border-bottom:1px solid rgba(17,24,39,.08);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width: 140px;
    }
    .logo-badge{
      width:42px;height:42px;
      border-radius:14px;
      background:
        radial-gradient(12px 12px at 30% 30%, rgba(255,255,255,.95) 0%, rgba(255,255,255,0) 62%),
        linear-gradient(135deg, rgba(59,130,246,.95) 0%, rgba(139,92,246,.92) 45%, rgba(249,115,22,.90) 100%);
      box-shadow: 0 12px 30px rgba(59,130,246,.22);
      display:flex;
      align-items:center;
      justify-content:center;
      border:1px solid rgba(255,255,255,.35);
    }
    .logo-badge span{
      font-weight:800;
      color:#fff;
      letter-spacing:.04em;
      font-size:18px;
      text-shadow: 0 2px 10px rgba(0,0,0,.16);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.05;
    }
    .brand-text strong{
      font-size:14px;
      letter-spacing:.02em;
    }
    .brand-text em{
      font-style:normal;
      font-size:12px;
      color:var(--muted2);
      margin-top:3px;
    }

    .nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav a{
      text-decoration:none;
      font-size:13px;
      color:rgba(31,41,55,.86);
      padding:8px 10px;
      border-radius:12px;
      border:1px solid rgba(17,24,39,.08);
      background:rgba(255,255,255,.45);
      transition: transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .nav a:hover{
      transform: translateY(-1px);
      background:rgba(255,255,255,.78);
      border-color:rgba(17,24,39,.14);
    }
    .cta{
      display:flex;
      align-items:center;
      gap:10px;
      padding-left:6px;
    }
    .btn{
      appearance:none;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.6);
      color:#111827;
      padding:10px 12px;
      border-radius:14px;
      font-weight:650;
      font-size:13px;
      text-decoration:none;
      transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
      box-shadow: 0 10px 22px rgba(17,24,39,.06);
      white-space:nowrap;
    }
    .btn:hover{
      transform: translateY(-1px);
      border-color:rgba(17,24,39,.18);
      background: rgba(255,255,255,.82);
      box-shadow: 0 16px 34px rgba(17,24,39,.10);
    }
    .btn.primary{
      border:1px solid rgba(255,255,255,.28);
      color:#0b1220;
      background:
        radial-gradient(10px 10px at 18% 20%, rgba(255,255,255,.95) 0%, rgba(255,255,255,0) 60%),
        linear-gradient(135deg, rgba(59,130,246,.35) 0%, rgba(139,92,246,.30) 45%, rgba(249,115,22,.24) 100%),
        rgba(255,255,255,.58);
    }

    .hero{
      padding:22px 0 14px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:18px;
      align-items:stretch;
    }
    .panel{
      border:1px solid rgba(17,24,39,.10);
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(255,255,255,.78) 0%, rgba(255,255,255,.58) 100%);
      box-shadow: var(--shadow2);
      overflow:hidden;
      position:relative;
    }
    .panel:before{
      content:"";
      position:absolute;
      inset:-2px;
      background:
        radial-gradient(600px 220px at 20% 0%, rgba(59,130,246,.18) 0%, rgba(59,130,246,0) 60%),
        radial-gradient(520px 240px at 90% 20%, rgba(139,92,246,.16) 0%, rgba(139,92,246,0) 58%),
        radial-gradient(460px 220px at 60% 100%, rgba(249,115,22,.12) 0%, rgba(249,115,22,0) 55%);
      pointer-events:none;
    }

    .hero-left{
      padding:22px 20px 18px;
      position:relative;
      z-index:1;
    }
    .pill-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      margin-bottom:12px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      font-size:13px;
      color:rgba(31,41,55,.92);
    }
    .dot{
      width:10px;height:10px;border-radius:50%;
      background: linear-gradient(135deg, var(--brand1), var(--brand2));
      box-shadow: 0 10px 20px rgba(59,130,246,.22);
    }
    h1{
      margin: 6px 0 10px;
      font-size: 34px;
      letter-spacing:-.02em;
      line-height:1.15;
    }
    .sub{
      color:var(--muted);
      font-size:15px;
      line-height:1.7;
      margin:0 0 14px;
      max-width: 56ch;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
      margin-top:12px;
    }
    .action-micro{
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:10px 12px;
      border-radius:16px;
      border:1px dashed rgba(17,24,39,.16);
      background: rgba(255,255,255,.38);
    }
    .action-micro strong{
      display:block;
      font-size:13px;
      margin-top:1px;
    }
    .action-micro span{
      font-size:12px;
      color:var(--muted2);
      line-height:1.35;
    }
    .icon{
      width:34px;height:34px;
      border-radius:12px;
      display:flex;
      align-items:center;
      justify-content:center;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.65);
      flex:0 0 auto;
    }
    .hero-right{
      padding:16px;
      position:relative;
      z-index:1;
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .thumb-strip{
      display:grid;
      grid-template-columns: repeat(2, 1fr);
      gap:10px;
      align-items:stretch;
    }
    .img-card{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.55);
      padding:10px;
      position:relative;
      overflow:hidden;
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }
    .img-card:hover{
      transform: translateY(-2px);
      border-color: rgba(17,24,39,.18);
      background: rgba(255,255,255,.72);
    }
    .img-wrap{
      border-radius:12px;
      overflow:hidden;
      border:1px solid rgba(17,24,39,.08);
      background:#fff;
    }
    .img-wrap img{
      width:100%;
      height:auto;
      display:block;
      object-fit:contain;
    }
    .img-caption{
      margin-top:8px;
      font-size:12px;
      color:var(--muted2);
      line-height:1.35;
      display:flex;
      align-items:flex-start;
      gap:8px;
    }
    .img-caption b{
      color:rgba(31,41,55,.92);
      font-weight:700;
      white-space:nowrap;
    }

    .keyline{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.52);
    }
    .keyline .kicon{
      width:36px;height:36px;border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background:
        radial-gradient(14px 14px at 30% 30%, rgba(255,255,255,.95) 0%, rgba(255,255,255,0) 62%),
        linear-gradient(135deg, rgba(59,130,246,.22), rgba(139,92,246,.22), rgba(249,115,22,.18));
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      box-shadow: 0 12px 30px rgba(59,130,246,.10);
    }
    .keyline strong{
      display:block;
      font-size:13px;
      margin-top:1px;
    }
    .keyline span{
      display:block;
      font-size:12px;
      color:var(--muted2);
      line-height:1.45;
      margin-top:4px;
    }

    main{padding:14px 0 20px}
    .section{
      margin-top:14px;
    }
    .section-title{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:12px;
      margin: 14px 0 10px;
    }
    h2{
      margin:0;
      font-size:20px;
      letter-spacing:-.01em;
    }
    .hint{
      font-size:12px;
      color:var(--muted2);
      line-height:1.3;
      margin:0;
    }

    .toc{
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.60);
      box-shadow: 0 10px 22px rgba(17,24,39,.06);
      padding:14px;
    }
    .toc-grid{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap:10px;
    }
    .toc a{
      text-decoration:none;
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.09);
      background: rgba(255,255,255,.55);
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      min-height: 74px;
    }
    .toc a:hover{
      transform: translateY(-2px);
      border-color: rgba(17,24,39,.18);
      background: rgba(255,255,255,.78);
    }
    .toc .n{
      width:28px;height:28px;border-radius:12px;
      background: rgba(59,130,246,.12);
      border:1px solid rgba(59,130,246,.18);
      display:flex;align-items:center;justify-content:center;
      font-weight:800;
      font-size:12px;
      color:rgba(17,24,39,.86);
      flex:0 0 auto;
      margin-top:2px;
    }
    .toc .t{
      font-size:13px;
      color:rgba(31,41,55,.92);
      line-height:1.35;
      font-weight:700;
      margin-top:1px;
    }
    .toc .d{
      font-size:12px;
      color:var(--muted2);
      line-height:1.35;
      margin-top:4px;
    }

    .content-card{
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 12px 34px rgba(17,24,39,.07);
      padding:16px;
      overflow:hidden;
      position:relative;
    }
    .content-card:after{
      content:"";
      position:absolute;
      inset:auto -80px -120px auto;
      width:220px;height:220px;
      background: radial-gradient(circle at 30% 30%, rgba(139,92,246,.22), rgba(139,92,246,0) 60%);
      pointer-events:none;
    }
    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
      position:relative;
      z-index:1;
    }
    .block{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
      padding:14px;
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }
    .block:hover{
      transform: translateY(-2px);
      border-color: rgba(17,24,39,.18);
      background: rgba(255,255,255,.75);
    }
    .block h3{
      margin:0 0 8px;
      font-size:16px;
      letter-spacing:-.01em;
    }
    .block p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }
    .list{
      margin:10px 0 0;
      padding-left:18px;
      color:var(--muted);
      font-size:13px;
      line-height:1.8;
    }
    .steps{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
    }
    .step{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
      padding:14px;
      position:relative;
      overflow:hidden;
    }
    .step:before{
      content:"";
      position:absolute;
      left:-30px; top:-30px;
      width:90px; height:90px;
      background: radial-gradient(circle at 30% 30%, rgba(59,130,246,.22), rgba(59,130,246,0) 62%);
      pointer-events:none;
    }
    .step .head{
      display:flex;
      gap:10px;
      align-items:flex-start;
    }
    .step .num{
      width:34px;height:34px;border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background:
        linear-gradient(135deg, rgba(59,130,246,.18), rgba(139,92,246,.18), rgba(249,115,22,.14));
      display:flex;align-items:center;justify-content:center;
      font-weight:900;
      flex:0 0 auto;
    }
    .step strong{
      font-size:14px;
      display:block;
      margin-top:2px;
    }
    .step p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }

    .split{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:12px;
      align-items:start;
    }
    .mini-table{
      margin-top:10px;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .row{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .tag{
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
      background: rgba(255,255,255,.7);
    }
    .tag.good{ color: #0f766e; border-color: rgba(15,118,110,.22); background: rgba(13,148,136,.10);}
    .tag.warn{ color:#92400e; border-color: rgba(245,158,11,.26); background: rgba(245,158,11,.12);}
    .tag.info{ color:#1d4ed8; border-color: rgba(29,78,216,.22); background: rgba(29,78,216,.10);}
    .row p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }

    .faq{
      padding:14px;
    }
    details{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
      padding:12px 12px;
      margin-top:10px;
      transition: background .15s ease, border-color .15s ease, transform .15s ease;
    }
    details[open]{
      background: rgba(255,255,255,.80);
      border-color: rgba(17,24,39,.18);
    }
    summary{
      cursor:pointer;
      list-style:none;
      display:flex;
      gap:10px;
      align-items:flex-start;
      font-weight:800;
      font-size:14px;
      color:rgba(31,41,55,.96);
    }
    summary::-webkit-details-marker{display:none}
    .qmark{
      width:30px;height:30px;border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(59,130,246,.10);
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      margin-top:1px;
      font-size:14px;
      font-weight:900;
      color: rgba(29,78,216,.95);
    }
    details p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    .conclude{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background:
        linear-gradient(135deg, rgba(59,130,246,.10) 0%, rgba(139,92,246,.08) 45%, rgba(249,115,22,.06) 100%),
        rgba(255,255,255,.58);
      box-shadow: 0 12px 34px rgba(17,24,39,.06);
    }
    .conclude .seal{
      width:44px;height:44px;border-radius:18px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.72);
      display:flex;align-items:center;justify-content:center;
      box-shadow: 0 16px 36px rgba(59,130,246,.10);
      flex:0 0 auto;
      font-weight:900;
      color: rgba(31,41,55,.92);
    }
    .conclude strong{
      display:block;
      font-size:15px;
      margin-top:2px;
    }
    .conclude span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
      margin-top:8px;
    }

    .link-inline{
      margin-top:12px;
      padding:12px 14px;
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .link-inline .lrow{
      display:flex;
      flex-wrap:wrap;
      gap:10px 12px;
      align-items:center;
      justify-content:space-between;
    }
    .link-inline p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }
    .links{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .links a{
      text-decoration:none;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.72);
      padding:9px 10px;
      border-radius:14px;
      font-weight:750;
      font-size:13px;
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      white-space:nowrap;
    }
    .links a:hover{
      transform: translateY(-1px);
      border-color: rgba(17,24,39,.18);
      background: rgba(255,255,255,.90);
    }

    .contact{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
    }
    .contact-card{
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 12px 34px rgba(17,24,39,.06);
      padding:14px;
    }
    .contact-card h2{
      font-size:18px;
      margin-bottom:8px;
    }
    .kv{
      display:grid;
      grid-template-columns: 1fr;
      gap:10px;
      margin-top:10px;
    }
    .kv-item{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:10px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .kv-item .k{
      width:92px;
      font-size:12px;
      color:rgba(31,41,55,.92);
      font-weight:900;
      padding-top:2px;
      flex:0 0 auto;
    }
    .kv-item .v{
      font-size:13px;
      color:var(--muted);
      line-height:1.6;
    }
    .qr-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
      align-items:start;
      margin-top:10px;
    }
    .qr{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
      padding:10px;
    }
    .qr .qcap{
      margin-top:8px;
      font-size:12px;
      color:var(--muted2);
      line-height:1.45;
    }
    .qr img{
      width:100%;
      height:auto;
      display:block;
      border-radius:12px;
      background:#fff;
      border:1px solid rgba(17,24,39,.08);
    }

    footer{
      border-top:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.72);
      margin-top:12px;
    }
    .footer-inner{
      padding:14px 0 18px;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .foot-left{
      min-width: 260px;
      max-width: 520px;
    }
    .foot-left p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }
    .foot-right{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
      align-items:center;
    }
    .foot-right a{
      text-decoration:none;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.75);
      padding:10px 12px;
      border-radius:14px;
      font-weight:800;
      font-size:13px;
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      white-space:nowrap;
    }
    .foot-right a:hover{
      transform: translateY(-1px);
      border-color: rgba(17,24,39,.18);
      background: rgba(255,255,255,.92);
    }
    .copyright{
      width:100%;
      margin-top:10px;
      padding-top:10px;
      border-top:1px solid rgba(17,24,39,.08);
      color:var(--muted2);
      font-size:12px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      h1{font-size:28px}
      .toc-grid{grid-template-columns: 1fr;}
      .grid-2{grid-template-columns: 1fr;}
      .steps{grid-template-columns: 1fr;}
      .split{grid-template-columns: 1fr;}
      .contact{grid-template-columns: 1fr;}
      .nav{display:none}
      .cta{gap:8px}
    }

    .float-in{
      animation: floatIn .55s ease both;
    }
    @keyframes floatIn{
      from{opacity:0; transform: translateY(10px)}
      to{opacity:1; transform: translateY(0)}
    }
    @media (prefers-reduced-motion: reduce){
      .float-in{animation:none}
      *{scroll-behavior:auto !important}
    }
    html{scroll-behavior:smooth}