:root{
      --bg0:#f6f2ff;
      --bg1:#eef2ff;
      --ink:#1f2430;
      --muted:#5a6477;
      --card:#ffffffb8;
      --card2:#ffffff;
      --line:rgba(36,44,66,.14);
      --shadow:0 18px 45px rgba(24,32,54,.10);
      --shadow2:0 10px 26px rgba(24,32,54,.10);
      --brand1:#7b61ff;
      --brand2:#a58bff;
      --brand3:#4a7dff;
      --btn:#2b2f3a;
      --btnText:#fff;
      --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, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", Arial, sans-serif;
      color:var(--ink);
      background:
        radial-gradient(900px 460px at 18% 8%, rgba(123,97,255,.22), transparent 60%),
        radial-gradient(780px 420px at 82% 18%, rgba(74,125,255,.16), transparent 58%),
        linear-gradient(180deg, var(--bg0) 0%, #fbfafc 36%, var(--bg1) 100%);
      overflow-x:hidden;
    }
    a{color:inherit}
    .skip{
      position:absolute; left:-9999px; top:8px;
      background:#111; color:#fff; padding:10px 12px; border-radius:10px;
      z-index:9999;
    }
    .skip:focus{left:12px}
    .container{
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }

    header.site-header{
      position:sticky; top:0; z-index:20;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(246,242,255,.55);
      border-bottom:1px solid rgba(36,44,66,.10);
    }
    .header-inner{
      display:flex; align-items:center; justify-content:space-between;
      padding:12px 0;
      gap:14px;
    }
    .brand{
      display:flex; align-items:center; gap:12px; min-width:150px;
    }
    .logo{
      width:38px; height:38px; border-radius:14px;
      background:linear-gradient(135deg, rgba(123,97,255,.18), rgba(74,125,255,.18));
      border:1px solid rgba(123,97,255,.35);
      box-shadow:0 10px 22px rgba(123,97,255,.12);
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      letter-spacing:.5px;
      color:#2b2f3a;
      position:relative;
      overflow:hidden;
      user-select:none;
    }
    .logo:before{
      content:"";
      position:absolute; inset:-30%;
      background:radial-gradient(circle at 20% 20%, rgba(123,97,255,.34), transparent 55%),
                 radial-gradient(circle at 70% 80%, rgba(74,125,255,.26), transparent 60%);
      transform:rotate(18deg);
    }
    .logo span{position:relative; z-index:1; font-size:18px}
    .brand-text{
      display:flex; flex-direction:column; line-height:1.1;
    }
    .brand-text b{font-size:14px}
    .brand-text small{color:var(--muted); font-size:12px; margin-top:2px}

    nav.navbar{
      display:flex; align-items:center; gap:10px;
    }
    .nav-links{
      display:flex; gap:14px; align-items:center;
      padding:0; margin:0; list-style:none;
      flex-wrap:wrap;
    }
    .nav-links a{
      text-decoration:none;
      color:rgba(31,36,48,.92);
      font-size:13px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid transparent;
      transition:background .2s ease, border-color .2s ease, transform .2s ease;
      white-space:nowrap;
    }
    .nav-links a:hover{
      background:rgba(255,255,255,.55);
      border-color:rgba(123,97,255,.22);
      transform:translateY(-1px);
    }
    .nav-cta{
      display:flex; align-items:center; gap:10px; justify-content:flex-end;
      min-width:220px;
    }
    .btn{
      border:1px solid rgba(36,44,66,.14);
      background:rgba(255,255,255,.55);
      color:rgba(31,36,48,.95);
      padding:10px 12px;
      border-radius:999px;
      text-decoration:none;
      font-size:13px;
      display:inline-flex; align-items:center; gap:8px;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      box-shadow:0 10px 24px rgba(24,32,54,.06);
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-1px); background:rgba(255,255,255,.75); border-color:rgba(123,97,255,.28)}
    .btn-primary{
      background:linear-gradient(135deg, rgba(43,47,58,1), rgba(25,30,44,1));
      color:#fff;
      border-color:rgba(0,0,0,.08);
      box-shadow:0 16px 40px rgba(25,30,44,.18);
    }
    .btn-primary:hover{transform:translateY(-1px); box-shadow:0 18px 48px rgba(25,30,44,.22)}
    .btn svg{flex:0 0 auto}

    .hamburger{
      display:none;
      border:1px solid rgba(36,44,66,.14);
      background:rgba(255,255,255,.55);
      border-radius:12px;
      padding:10px 12px;
      cursor:pointer;
      transition:transform .2s ease, background .2s ease;
    }
    .hamburger:hover{transform:translateY(-1px); background:rgba(255,255,255,.75)}
    .hamburger .lines{
      width:18px; height:12px; position:relative;
    }
    .hamburger .lines span{
      position:absolute; left:0; right:0; height:2px; border-radius:2px;
      background:rgba(31,36,48,.86);
      transition:transform .2s ease, top .2s ease, opacity .2s ease;
    }
    .hamburger .lines span:nth-child(1){top:0}
    .hamburger .lines span:nth-child(2){top:5px}
    .hamburger .lines span:nth-child(3){top:10px}
    .hamburger[aria-expanded="true"] .lines span:nth-child(1){top:5px; transform:rotate(45deg)}
    .hamburger[aria-expanded="true"] .lines span:nth-child(2){opacity:0}
    .hamburger[aria-expanded="true"] .lines span:nth-child(3){top:5px; transform:rotate(-45deg)}

    .mobile-panel{
      display:none;
      padding:10px 0 16px;
    }
    .mobile-panel .mobile-links{
      display:flex; flex-direction:column; gap:8px;
      padding:0; margin:0; list-style:none;
    }
    .mobile-panel .mobile-links a{
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.55);
      font-size:14px;
    }
    .mobile-panel .mobile-links a:focus{outline:2px solid rgba(123,97,255,.45); outline-offset:2px}

    .hero{
      padding:24px 0 10px;
    }
    .hero-grid{
      display:grid; grid-template-columns: 1.35fr .85fr;
      gap:18px; align-items:stretch;
      padding:18px 0 6px;
    }
    .hero-card{
      border-radius:var(--radius);
      border:1px solid rgba(123,97,255,.22);
      background:
        radial-gradient(1200px 520px at 20% 10%, rgba(123,97,255,.22), transparent 60%),
        radial-gradient(800px 420px at 90% 35%, rgba(74,125,255,.18), transparent 62%),
        rgba(255,255,255,.42);
      box-shadow:var(--shadow);
      padding:22px 20px;
      position:relative;
      overflow:hidden;
      min-height:240px;
    }
    .hero-card:after{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(480px 160px at 20% 0%, rgba(255,255,255,.62), transparent 60%),
        radial-gradient(520px 220px at 90% 15%, rgba(255,255,255,.42), transparent 62%);
      pointer-events:none;
    }
    .hero-content{position:relative; z-index:1}
    .kicker{
      display:flex; gap:10px; align-items:center; flex-wrap:wrap;
      margin-bottom:10px;
    }
    .pill{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(123,97,255,.20);
      background:rgba(255,255,255,.55);
      font-size:12px;
      color:rgba(31,36,48,.92);
    }
    .pill i{
      width:10px; height:10px; border-radius:50%;
      background:linear-gradient(135deg, rgba(123,97,255,.9), rgba(74,125,255,.75));
      box-shadow:0 10px 20px rgba(123,97,255,.25);
    }
    h1{
      margin:8px 0 10px;
      font-size:30px;
      line-height:1.25;
      letter-spacing:-.4px;
    }
    .lead{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
      max-width:62ch;
    }
    .hero-actions{
      display:flex; gap:12px; align-items:center; flex-wrap:wrap;
      margin-top:16px;
    }
    .btn-sm{
      padding:10px 14px;
    }
    .meta-row{
      display:flex; gap:14px; align-items:center; flex-wrap:wrap;
      margin-top:14px;
      color:rgba(31,36,48,.86);
      font-size:12px;
    }
    .meta-row .dot{
      width:5px; height:5px; border-radius:50%;
      background:rgba(31,36,48,.25);
    }
    .hero-side{
      border-radius:var(--radius);
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.52);
      box-shadow:var(--shadow2);
      padding:16px;
      display:flex; flex-direction:column; gap:12px;
      min-height:240px;
    }
    .side-title{
      display:flex; align-items:flex-start; justify-content:space-between; gap:10px;
    }
    .side-title b{font-size:14px}
    .badge{
      font-size:12px; padding:7px 10px; border-radius:999px;
      border:1px solid rgba(123,97,255,.22);
      background:rgba(123,97,255,.10);
      color:rgba(58,45,160,.95);
      white-space:nowrap;
    }
    .side-list{
      list-style:none; margin:0; padding:0;
      display:flex; flex-direction:column; gap:10px;
    }
    .side-list li{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(36,44,66,.10);
      background:rgba(255,255,255,.56);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
    }
    .side-list li:hover{
      transform:translateY(-2px);
      border-color:rgba(123,97,255,.22);
      background:rgba(255,255,255,.72);
    }
    .ico{
      width:28px; height:28px; border-radius:12px;
      background:linear-gradient(135deg, rgba(123,97,255,.20), rgba(74,125,255,.14));
      border:1px solid rgba(123,97,255,.22);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
    }
    .ico svg{opacity:.95}
    .side-list h3{
      margin:0; font-size:13px; letter-spacing:-.2px;
    }
    .side-list p{
      margin:2px 0 0; color:var(--muted); font-size:12px; line-height:1.55;
    }

    main{padding:14px 0 12px}
    .section{
      padding:18px 0;
    }
    .section.compact{padding:12px 0}
    .section-title{
      display:flex; align-items:flex-end; justify-content:space-between; gap:14px;
      margin-bottom:12px;
    }
    .section-title h2{
      margin:0;
      font-size:18px;
      letter-spacing:-.2px;
    }
    .section-title p{
      margin:0; color:var(--muted); font-size:13px; line-height:1.6;
      max-width:62ch;
      text-wrap:balance;
    }

    .toc{
      border-radius:var(--radius);
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.52);
      box-shadow:0 12px 30px rgba(24,32,54,.08);
      padding:14px;
    }
    .toc-grid{
      display:grid; grid-template-columns: 1fr 1fr;
      gap:12px;
    }
    .toc-item{
      border-radius:14px;
      border:1px solid rgba(36,44,66,.10);
      background:rgba(255,255,255,.58);
      padding:12px 12px;
      display:flex; gap:10px; align-items:flex-start;
      transition:transform .2s ease, border-color .2s ease;
    }
    .toc-item:hover{
      transform:translateY(-2px);
      border-color:rgba(123,97,255,.22);
    }
    .toc-item a{
      text-decoration:none; width:100%;
      display:flex; gap:10px; align-items:flex-start;
      color:inherit;
    }
    .toc-item b{font-size:13px}
    .toc-item span{display:block; margin-top:2px; color:var(--muted); font-size:12px; line-height:1.5}

    .grid-2{
      display:grid; grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:stretch;
    }
    .grid-3{
      display:grid; grid-template-columns: repeat(3, 1fr);
      gap:12px;
    }

    .card{
      border-radius:var(--radius2);
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.55);
      box-shadow:0 10px 26px rgba(24,32,54,.06);
      padding:14px;
      position:relative;
      overflow:hidden;
    }
    .card .card-head{
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .card .card-head h3{
      margin:0; font-size:15px; letter-spacing:-.2px;
    }
    .tag{
      font-size:12px; padding:7px 10px; border-radius:999px;
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.52);
      color:rgba(31,36,48,.86);
      white-space:nowrap;
    }
    .card p{
      margin:0; color:var(--muted); font-size:13px; line-height:1.75;
      text-wrap:pretty;
    }
    .card .list{
      margin:10px 0 0; padding:0; list-style:none;
      display:flex; flex-direction:column; gap:8px;
    }
    .card .list li{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(36,44,66,.09);
      background:rgba(255,255,255,.56);
    }
    .check{
      width:22px; height:22px; border-radius:10px;
      background:rgba(123,97,255,.12);
      border:1px solid rgba(123,97,255,.22);
      display:flex; align-items:center; justify-content:center; flex:0 0 auto;
      margin-top:1px;
    }
    .list strong{font-size:13px; display:block}
    .list em{
      font-style:normal;
      color:var(--muted);
      font-size:12px;
      line-height:1.55;
      display:block;
      margin-top:2px;
    }

    .steps{
      border-radius:var(--radius);
      border:1px solid rgba(123,97,255,.18);
      background:
        radial-gradient(700px 260px at 10% 0%, rgba(123,97,255,.16), transparent 62%),
        rgba(255,255,255,.52);
      box-shadow:0 14px 34px rgba(24,32,54,.08);
      padding:16px;
    }
    .steps-header{
      display:flex; align-items:flex-end; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .steps-header h2{margin:0; font-size:18px}
    .steps-header p{margin:0; color:var(--muted); font-size:13px; line-height:1.6}
    .step-list{
      display:grid; grid-template-columns: repeat(2, 1fr);
      gap:12px;
    }
    .step{
      border-radius:16px;
      border:1px solid rgba(36,44,66,.10);
      background:rgba(255,255,255,.60);
      padding:12px;
      transition:transform .2s ease, border-color .2s ease;
    }
    .step:hover{transform:translateY(-2px); border-color:rgba(123,97,255,.22)}
    .step-top{
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px;
      margin-bottom:6px;
    }
    .step-num{
      width:30px; height:30px; border-radius:12px;
      background:linear-gradient(135deg, rgba(123,97,255,.18), rgba(74,125,255,.12));
      border:1px solid rgba(123,97,255,.22);
      display:flex; align-items:center; justify-content:center;
      font-weight:800; font-size:13px;
    }
    .step h3{margin:0; font-size:14px}
    .step p{margin:0; color:var(--muted); font-size:13px; line-height:1.7}

    .faq{
      border-radius:var(--radius);
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.52);
      box-shadow:0 12px 30px rgba(24,32,54,.07);
      overflow:hidden;
    }
    details{
      border-top:1px solid rgba(36,44,66,.10);
      padding:0 12px;
      background:transparent;
    }
    details:first-child{border-top:none}
    summary{
      cursor:pointer;
      padding:14px 6px;
      list-style:none;
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px;
      outline:none;
    }
    summary::-webkit-details-marker{display:none}
    .q{
      font-weight:700; font-size:14px;
      letter-spacing:-.15px;
      line-height:1.5;
      padding-top:2px;
    }
    .arrow{
      width:30px; height:30px; border-radius:12px;
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.58);
      display:flex; align-items:center; justify-content:center;
      transition:transform .22s ease;
      flex:0 0 auto;
      margin-top:1px;
    }
    details[open] .arrow{transform:rotate(180deg)}
    .ans{
      padding:0 6px 14px;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    .ans .mini{
      margin-top:10px;
      display:flex; gap:10px; flex-wrap:wrap;
    }
    .mini .chip{
      border:1px solid rgba(123,97,255,.18);
      background:rgba(123,97,255,.10);
      color:rgba(58,45,160,.95);
      padding:8px 10px;
      border-radius:999px;
      font-size:12px;
      white-space:nowrap;
    }

    .callout{
      border-radius:var(--radius);
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.52);
      box-shadow:0 12px 30px rgba(24,32,54,.07);
      padding:16px;
    }
    .callout-inner{
      display:grid; grid-template-columns: 1fr 1fr;
      gap:14px; align-items:start;
    }
    .callout h2{margin:0; font-size:18px}
    .callout p{margin:6px 0 0; color:var(--muted); font-size:13px; line-height:1.75}
    .contact-box{
      border-radius:16px;
      border:1px solid rgba(36,44,66,.10);
      background:rgba(255,255,255,.62);
      padding:12px;
    }
    .contact-box b{display:block; font-size:14px; margin-bottom:6px}
    .contact-box .row{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(36,44,66,.09);
      background:rgba(255,255,255,.60);
      margin-top:10px;
    }
    .contact-box .row:first-of-type{margin-top:0}
    .contact-box .row strong{font-size:13px}
    .contact-box .row span{display:block; color:var(--muted); font-size:12px; line-height:1.6; margin-top:2px}
    .contact-box .maplink{
      display:inline-flex; align-items:center; gap:8px;
      color:#0b57d0;
      text-decoration:none;
      border-bottom:1px dashed rgba(11,87,208,.35);
      padding-bottom:2px;
      word-break:break-word;
    }
    .contact-box .maplink:hover{border-bottom-style:solid}

    .footer{
      margin-top:6px;
      background:rgba(255,255,255,.45);
      border-top:1px solid rgba(36,44,66,.10);
      color:#1f2430;
    }
    .footer-inner{
      padding:18px 0 22px;
      display:flex; flex-direction:column; gap:12px;
    }
    .footer-top{
      display:flex; justify-content:space-between; gap:14px; align-items:flex-start; flex-wrap:wrap;
    }
    .footer-brand{
      display:flex; gap:12px; align-items:flex-start;
    }
    .footer-copy{
      color:var(--muted);
      font-size:12px;
      line-height:1.7;
      margin-top:2px;
      max-width:56ch;
    }
    .footer-links{
      display:flex; gap:10px; flex-wrap:wrap; align-items:center;
      justify-content:flex-end;
      max-width:520px;
    }
    .footer-links a{
      text-decoration:none;
      border:1px solid rgba(36,44,66,.12);
      background:rgba(255,255,255,.55);
      padding:9px 10px;
      border-radius:999px;
      font-size:12px;
      color:rgba(31,36,48,.92);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{transform:translateY(-1px); border-color:rgba(123,97,255,.22); background:rgba(255,255,255,.75)}
    .copyright{
      color:var(--muted);
      font-size:12px;
      display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap;
      border-top:1px dashed rgba(36,44,66,.14);
      padding-top:12px;
    }

    .fade-in{
      opacity:0; transform:translateY(10px);
      transition:opacity .55s ease, transform .55s ease;
    }
    .fade-in.is-visible{opacity:1; transform:translateY(0)}
    .floaty{
      position:absolute; right:-70px; top:-80px;
      width:220px; height:220px;
      border-radius:50%;
      background:radial-gradient(circle at 30% 30%, rgba(123,97,255,.22), transparent 60%);
      filter:blur(.2px);
      pointer-events:none;
      animation: drift 9s ease-in-out infinite;
    }
    @keyframes drift{
      0%,100%{transform:translate(0,0)}
      50%{transform:translate(-10px,12px)}
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      .nav-cta{min-width:unset}
      .step-list{grid-template-columns: 1fr}
      .callout-inner{grid-template-columns: 1fr}
      .toc-grid{grid-template-columns: 1fr}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .nav-cta{display:none}
      .hamburger{display:inline-flex}
      .mobile-panel{display:block}
      header.site-header{background:rgba(246,242,255,.72)}
      h1{font-size:24px}
      .grid-2{grid-template-columns:1fr}
      .grid-3{grid-template-columns:1fr}
    }

    @media (prefers-reduced-motion: reduce){
      .fade-in{transition:none}
      .floaty{animation:none}
      .btn,.nav-links a,.side-list li,.toc-item,.step{transition:none}
    }