:root{
      --bg0:#071425;
      --bg1:#0a1a33;
      --card: rgba(255,255,255,.06);
      --card2: rgba(255,255,255,.085);
      --stroke: rgba(255,255,255,.12);
      --text:#eaf2ff;
      --muted: rgba(234,242,255,.72);
      --muted2: rgba(234,242,255,.58);
      --brand:#6ee7ff;
      --brand2:#9b8cff;
      --accent:#7aa7ff;
      --ok:#47d18c;
      --warn:#ffd166;
      --danger:#ff6b8b;
      --shadow: 0 20px 60px rgba(0,0,0,.35);
      --shadow2: 0 10px 30px rgba(0,0,0,.25);
      --radius: 18px;
      --radius2: 14px;
      --container: 1120px;
      --pad: 18px;
      --focus: 0 0 0 4px rgba(110,231,255,.18);
    }

    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(1200px 680px at 20% -10%, rgba(155,140,255,.35), transparent 55%),
        radial-gradient(1100px 620px at 80% 0%, rgba(110,231,255,.28), transparent 52%),
        radial-gradient(900px 540px at 50% 20%, rgba(122,167,255,.16), transparent 60%),
        linear-gradient(180deg, var(--bg1), var(--bg0));
      overflow-x:hidden;
    }

    a{color:inherit}
    .container{
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 var(--pad);
    }

    .topbar{
      position: sticky;
      top:0;
      z-index: 50;
      backdrop-filter: blur(12px);
      background: linear-gradient(180deg, rgba(7,20,37,.78), rgba(7,20,37,.55));
      border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap:14px;
      padding: 12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width: 180px;
    }
    .logo{
      width:40px;height:40px;
      display:grid;place-items:center;
      border-radius: 12px;
      background:
        radial-gradient(14px 14px at 30% 25%, rgba(255,255,255,.35), transparent 60%),
        linear-gradient(135deg, rgba(110,231,255,.85), rgba(155,140,255,.7));
      border: 1px solid rgba(255,255,255,.18);
      box-shadow: 0 10px 30px rgba(0,0,0,.22);
      font-weight: 800;
      letter-spacing: .02em;
      color:#06111f;
    }
    .brand-title{
      display:flex;flex-direction:column;line-height:1.1;
    }
    .brand-title strong{
      font-size:14px;letter-spacing:.06em;text-transform: none;
    }
    .brand-title span{
      font-size:12px;color: var(--muted2);
      margin-top:2px;
    }

    .nav{
      display:flex;
      align-items:center;
      gap: 14px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .nav a{
      text-decoration:none;
      font-size: 13px;
      color: var(--muted);
      padding: 8px 10px;
      border-radius: 999px;
      border: 1px solid transparent;
      transition: transform .15s ease, border-color .15s ease, background .15s ease, color .15s ease;
      white-space: nowrap;
    }
    .nav a:hover{
      color: var(--text);
      background: rgba(255,255,255,.06);
      border-color: rgba(255,255,255,.12);
      transform: translateY(-1px);
    }

    .cta{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end;
    }
    .btn{
      appearance:none;
      border:none;
      cursor:pointer;
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      font-weight: 700;
      border-radius: 999px;
      padding: 10px 14px;
      transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
      user-select:none;
      white-space: nowrap;
    }
    .btn:focus{outline:none;box-shadow: var(--focus)}
    .btn-primary{
      color:#06111f;
      background: linear-gradient(135deg, rgba(110,231,255,.95), rgba(155,140,255,.85));
      box-shadow: 0 18px 40px rgba(0,0,0,.25);
      border: 1px solid rgba(255,255,255,.22);
    }
    .btn-primary:hover{transform: translateY(-1px)}
    .btn-ghost{
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      color: var(--text);
    }
    .btn-ghost:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.09);
      border-color: rgba(255,255,255,.18);
    }

    .hero{
      position: relative;
      padding: 34px 0 22px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
      align-items: start;
    }
    .hero-left{
      border-radius: calc(var(--radius) + 6px);
      border: 1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(900px 380px at 15% 0%, rgba(110,231,255,.18), transparent 60%),
        radial-gradient(800px 340px at 80% 20%, rgba(155,140,255,.18), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      box-shadow: var(--shadow);
      padding: 22px;
      overflow:hidden;
      position: relative;
      min-height: 260px;
      transform: translateZ(0);
    }
    .stars{
      position:absolute; inset:-60px -60px auto -60px;
      height: 260px;
      pointer-events:none;
      background:
        radial-gradient(2px 2px at 18% 30%, rgba(255,255,255,.7), transparent 55%),
        radial-gradient(1.5px 1.5px at 45% 25%, rgba(255,255,255,.55), transparent 55%),
        radial-gradient(1.8px 1.8px at 65% 42%, rgba(255,255,255,.62), transparent 55%),
        radial-gradient(1.4px 1.4px at 78% 18%, rgba(255,255,255,.52), transparent 55%),
        radial-gradient(1.3px 1.3px at 28% 12%, rgba(255,255,255,.5), transparent 55%),
        radial-gradient(1.7px 1.7px at 55% 70%, rgba(110,231,255,.65), transparent 55%),
        radial-gradient(1.4px 1.4px at 72% 60%, rgba(155,140,255,.62), transparent 55%);
      opacity:.7;
      filter: blur(.2px);
      animation: drift 10s ease-in-out infinite;
    }
    @keyframes drift{
      0%,100%{transform: translateY(0)}
      50%{transform: translateY(12px)}
    }

    .hero-kicker{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap;
      margin-bottom: 10px;
    }
    .pill{
      display:inline-flex; align-items:center; gap:8px;
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      color: var(--muted);
      font-size: 12px;
    }
    .dot{
      width:8px;height:8px;border-radius:50%;
      background: linear-gradient(135deg, var(--brand), var(--brand2));
      box-shadow: 0 0 0 4px rgba(110,231,255,.12);
    }
    h1{
      margin: 8px 0 10px;
      font-size: clamp(22px, 3.2vw, 34px);
      letter-spacing: -0.02em;
      line-height: 1.15;
    }
    .lead{
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
      margin: 0;
      max-width: 62ch;
    }

    .hero-actions{
      display:flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 16px;
      align-items:center;
    }

    .hero-right{
      display:flex;
      flex-direction:column;
      gap: 12px;
    }

    .info-card{
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.035));
      box-shadow: var(--shadow2);
      padding: 16px;
      overflow:hidden;
      position: relative;
    }
    .info-card::after{
      content:"";
      position:absolute;
      inset:auto -60px -90px auto;
      width: 180px; height: 180px;
      border-radius: 50%;
      background: radial-gradient(circle at 30% 30%, rgba(110,231,255,.35), transparent 60%);
      filter: blur(0px);
      pointer-events:none;
    }
    .info-title{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      margin-bottom: 8px;
    }
    .info-title strong{font-size:14px}
    .tag{
      font-size:12px;
      color: #06111f;
      background: linear-gradient(135deg, rgba(255,209,102,.95), rgba(110,231,255,.8));
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.18);
      font-weight: 800;
    }
    .info-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap: 10px;
    }
    .info-list li{
      display:flex; gap:10px; align-items:flex-start;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }
    .check{
      width:18px;height:18px;border-radius:7px;
      background: rgba(71,209,140,.16);
      border: 1px solid rgba(71,209,140,.28);
      display:grid; place-items:center;
      flex: 0 0 auto;
      margin-top: 2px;
    }
    .check svg{width:12px;height:12px; fill: rgba(71,209,140,.95)}
    .mini{
      display:flex; gap: 10px; flex-wrap:wrap; align-items:center; margin-top: 12px;
      color: var(--muted2); font-size: 12px;
    }
    .mini a{
      color: var(--text);
      text-decoration: none;
      border-bottom: 1px dashed rgba(255,255,255,.25);
      padding-bottom: 2px;
    }
    .mini a:hover{border-bottom-color: rgba(110,231,255,.7)}

    main{padding: 6px 0 26px}
    section{margin-top: 16px}

    .section-shell{
      border-radius: calc(var(--radius) + 6px);
      border: 1px solid rgba(255,255,255,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
      box-shadow: var(--shadow2);
    }

    .section-head{
      padding: 16px 18px 10px;
      border-bottom: 1px solid rgba(255,255,255,.08);
      display:flex; align-items:flex-end; justify-content: space-between; gap:12px; flex-wrap:wrap;
    }
    .section-head h2{
      margin:0;
      font-size: 16px;
      letter-spacing: .01em;
    }
    .section-head .hint{
      color: var(--muted2);
      font-size: 12px;
      margin:0;
    }

    .section-body{padding: 16px 18px 18px}

    .toc{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      padding: 0;
      margin: 0;
      list-style:none;
    }
    .toc a{
      text-decoration:none;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap: 12px;
      padding: 12px 12px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      min-height: 56px;
    }
    .toc a:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.07);
      border-color: rgba(110,231,255,.25);
    }
    .toc .tlabel{
      display:flex; flex-direction:column; gap:4px;
    }
    .toc strong{font-size: 13px}
    .toc span{font-size: 12px; color: var(--muted2); line-height:1.4}
    .arrow{
      width: 34px; height: 34px;
      display:grid; place-items:center;
      border-radius: 12px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.05);
      color: var(--text);
      flex: 0 0 auto;
    }
    .arrow svg{width:16px;height:16px; fill: none; stroke: rgba(234,242,255,.85); stroke-width:2; stroke-linecap:round; stroke-linejoin:round}

    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      align-items:start;
    }

    .block{
      border-radius: var(--radius2);
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      padding: 14px;
    }
    .block h3{
      margin: 0 0 8px;
      font-size: 14px;
      letter-spacing: .01em;
    }
    .block p{
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .step-list{
      margin: 0;
      padding: 0;
      list-style:none;
      display:grid;
      gap: 10px;
    }
    .step{
      display:flex; gap: 12px; align-items:flex-start;
      padding: 12px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
    }
    .step:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.06);
      border-color: rgba(110,231,255,.22);
    }
    .num{
      width: 34px; height: 34px;
      border-radius: 13px;
      background: linear-gradient(135deg, rgba(110,231,255,.25), rgba(155,140,255,.18));
      border: 1px solid rgba(255,255,255,.14);
      display:grid; place-items:center;
      font-weight: 900;
      color: rgba(234,242,255,.92);
      flex: 0 0 auto;
    }
    .step .meta{
      display:flex;flex-direction:column;gap:4px;
    }
    .step strong{font-size: 13px}
    .step span{font-size: 12px; color: var(--muted2); line-height:1.55}

    .price-note{
      display:grid;
      grid-template-columns: 1fr;
      gap: 10px;
    }
    .price-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .price-card{
      border-radius: var(--radius2);
      border: 1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(420px 120px at 10% 0%, rgba(110,231,255,.16), transparent 65%),
        rgba(255,255,255,.04);
      padding: 14px;
      position: relative;
      overflow:hidden;
    }
    .price-card h3{margin:0 0 8px;font-size:14px}
    .price-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .meter{
      margin-top: 10px;
      border-radius: 12px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.03);
      padding: 10px 12px;
    }
    .meter-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom: 8px}
    .meter-row span{font-size:12px;color:var(--muted2)}
    .bar{
      width:100%;
      height: 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      overflow:hidden;
      border: 1px solid rgba(255,255,255,.10);
    }
    .bar > i{
      display:block;height:100%;
      width: 65%;
      background: linear-gradient(90deg, rgba(110,231,255,.85), rgba(155,140,255,.75));
      border-radius: 999px;
      animation: fill 1.2s ease both;
    }
    @keyframes fill{
      from{transform: scaleX(.6); transform-origin:left; opacity:.7}
      to{transform: scaleX(1); opacity:1}
    }

    .faq{
      display:grid;
      gap: 10px;
    }
    details.faq-item{
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      padding: 12px 12px;
      transition: border-color .15s ease, background .15s ease, transform .15s ease;
    }
    details.faq-item[open]{
      border-color: rgba(110,231,255,.25);
      background: rgba(255,255,255,.06);
    }
    details.faq-item summary{
      cursor:pointer;
      list-style:none;
      display:flex; align-items:flex-start; justify-content:space-between; gap: 12px;
      padding: 0 2px;
      user-select:none;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    .qtext{
      display:flex;flex-direction:column;gap:4px;
    }
    .qtext strong{font-size: 13px}
    .qtext span{font-size: 12px; color: var(--muted2); line-height:1.5}
    .chev{
      width: 34px;height:34px;border-radius: 12px;
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.12);
      display:grid;place-items:center;flex:0 0 auto;
      transform: rotate(0deg);
      transition: transform .2s ease;
    }
    details[open] .chev{transform: rotate(180deg)}
    .chev svg{width:16px;height:16px; fill:none; stroke: rgba(234,242,255,.9); stroke-width:2; stroke-linecap:round; stroke-linejoin:round}

    .summary{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 14px;
      align-items: start;
    }
    .callout{
      border-radius: var(--radius2);
      border: 1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(480px 180px at 0% 0%, rgba(155,140,255,.22), transparent 60%),
        rgba(255,255,255,.04);
      padding: 14px;
    }
    .callout h3{margin:0 0 8px; font-size: 14px}
    .callout p{margin:0; color: var(--muted); font-size: 13px; line-height: 1.7}
    .links{
      border-radius: var(--radius2);
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      padding: 14px;
    }
    .links h3{margin:0 0 8px; font-size:14px}
    .link-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap: 10px;
    }
    .link-list a{
      text-decoration:none;
      display:flex; align-items:flex-start; justify-content:space-between; gap:10px;
      padding: 10px 10px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.03);
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
    }
    .link-list a:hover{
      transform: translateY(-1px);
      border-color: rgba(110,231,255,.25);
      background: rgba(255,255,255,.06);
    }
    .link-list strong{font-size: 13px}
    .link-list span{font-size: 12px; color: var(--muted2); line-height: 1.5; max-width: 46ch}
    .links .tag2{
      display:inline-flex; align-items:center; gap:8px; margin-top: 12px;
      padding: 8px 10px; border-radius: 999px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.05);
      color: var(--muted);
      font-size: 12px;
    }
    .tag2 i{
      width:8px;height:8px;border-radius:50%;
      background: linear-gradient(135deg, var(--brand), var(--brand2));
      display:inline-block;
      box-shadow: 0 0 0 4px rgba(155,140,255,.14);
    }

    .img-strip{
      display:grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-top: 12px;
    }
    .img-item{
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.03);
      overflow:hidden;
      position: relative;
      min-height: 112px;
    }
    .img-wrap{
      padding: 10px;
    }
    .img-item img{
      width: 100%;
      height: auto;
      display:block;
      border-radius: 10px;
      object-fit: contain;
      filter: saturate(1.05) contrast(1.02);
      transition: transform .25s ease;
      transform: translateZ(0);
    }
    .img-item:hover img{transform: scale(1.02)}
    .img-caption{
      padding: 0 10px 12px;
      color: var(--muted2);
      font-size: 12px;
      line-height: 1.4;
    }

    footer{
      margin-top: 16px;
      background: rgba(0,0,0,.20);
      border-top: 1px solid rgba(255,255,255,.10);
      padding: 16px 0;
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 14px;
      align-items:start;
    }
    .foot-card{
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
      padding: 14px;
    }
    .foot-card h3{margin:0 0 8px; font-size: 14px}
    .foot-card p{margin:0; color: var(--muted); font-size: 13px; line-height:1.7}
    .foot-addr{
      display:flex; flex-direction:column; gap: 10px;
    }
    .addr-row{
      display:flex; gap:10px; align-items:flex-start;
      color: var(--muted);
      font-size: 13px;
      line-height:1.6;
    }
    .pin{
      width:18px;height:18px;border-radius: 7px;
      background: rgba(110,231,255,.14);
      border: 1px solid rgba(110,231,255,.25);
      display:grid; place-items:center;
      flex:0 0 auto;
      margin-top: 2px;
    }
    .pin svg{width:12px;height:12px; fill: rgba(110,231,255,.95)}
    .foot-links{
      display:flex; flex-wrap:wrap; gap: 10px;
      margin-top: 10px;
    }
    .foot-links a{
      text-decoration:none;
      font-size: 12px;
      color: var(--muted);
      padding: 8px 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.03);
      transition: transform .15s ease, border-color .15s ease, background .15s ease, color .15s ease;
    }
    .foot-links a:hover{
      transform: translateY(-1px);
      color: var(--text);
      border-color: rgba(110,231,255,.25);
      background: rgba(255,255,255,.06);
    }

    .copy{
      margin-top: 12px;
      color: rgba(234,242,255,.55);
      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; }
      .img-strip{grid-template-columns: repeat(2, 1fr);}
      .grid-2{grid-template-columns: 1fr;}
      .summary{grid-template-columns: 1fr;}
      .toc{grid-template-columns: 1fr;}
      .footer-grid{grid-template-columns: 1fr;}
    }
    @media (max-width: 520px){
      .brand{min-width: auto}
      .nav{display:none}
      .hero-left{padding: 18px}
      .section-body{padding: 14px}
      .section-head{padding: 14px 14px 10px}
    }

    .float-toast{
      position: fixed;
      left: 12px; right: 12px; bottom: 14px;
      z-index: 80;
      display:flex;
      justify-content:center;
      pointer-events:none;
    }
    .toast{
      pointer-events:auto;
      width: min(720px, 100%);
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(7,20,37,.72);
      backdrop-filter: blur(12px);
      box-shadow: 0 18px 60px rgba(0,0,0,.35);
      padding: 12px;
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 10px;
      transform: translateY(20px);
      opacity:0;
      animation: toastIn .55s ease forwards;
    }
    @keyframes toastIn{
      to{transform: translateY(0); opacity:1}
    }
    .toast .tleft{
      display:flex;flex-direction:column;gap:3px;
      min-width: 0;
    }
    .toast .tleft strong{font-size:13px}
    .toast .tleft span{font-size:12px;color:var(--muted2);line-height:1.4}
    .toast .tright{
      display:flex; gap: 10px; flex-wrap:wrap; justify-content:flex-end;
    }
    .toast .mini-btn{
      pointer-events:auto;
      border-radius: 999px;
      padding: 9px 12px;
      font-size: 12px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.06);
      color: var(--text);
      text-decoration:none;
      transition: transform .15s ease, background .15s ease, border-color .15s ease;
      display:inline-flex;align-items:center;gap:8px;
      font-weight: 800;
      white-space: nowrap;
    }
    .toast .mini-btn:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.09);
      border-color: rgba(110,231,255,.22);
    }
    .toast .mini-btn.primary{
      color:#06111f;
      background: linear-gradient(135deg, rgba(110,231,255,.95), rgba(155,140,255,.85));
      border-color: rgba(255,255,255,.22);
    }
    .sr-only{
      position:absolute !important;
      width:1px;height:1px;
      padding:0;margin:-1px;
      overflow:hidden;
      clip:rect(0,0,0,0);
      border:0;
    }