:root{
      --bg:#fbfaf7;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#6b7280;
      --line:#e6e3dc;
      --brand:#2457ff;
      --brand2:#0ea5e9;
      --shadow: 0 14px 40px rgba(15,23,42,.08);
      --shadow2: 0 10px 24px rgba(15,23,42,.06);
      --radius:16px;
      --radius2:12px;
      --focus: 0 0 0 4px rgba(36,87,255,.18);
    }
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",Arial,sans-serif;
      background:
        radial-gradient(1200px 600px at 18% 0%, rgba(14,165,233,.10), transparent 55%),
        radial-gradient(900px 520px at 85% 15%, rgba(36,87,255,.10), transparent 52%),
        linear-gradient(180deg, #fbfaf7 0%, #f7f6f2 55%, #fbfaf7 100%);
      color:var(--text);
      overflow-x:hidden;
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:1120px;
      margin:0 auto;
      padding:0 18px;
    }

    header{
      position:sticky;
      top:0;
      z-index:20;
      backdrop-filter: blur(10px);
      background: rgba(251,250,247,.78);
      border-bottom:1px solid rgba(230,227,220,.65);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:180px;
    }
    .logo{
      width:36px;height:36px;
      border-radius:12px;
      background: linear-gradient(135deg, rgba(36,87,255,.95), rgba(14,165,233,.9));
      box-shadow: 0 10px 22px rgba(36,87,255,.25);
      position:relative;
      flex:0 0 auto;
    }
    .logo:before{
      content:"";
      position:absolute; inset:10px 9px 9px 10px;
      border-radius:10px;
      border:2px solid rgba(255,255,255,.92);
      transform: rotate(-12deg);
      opacity:.9;
    }
    .brand strong{
      font-size:14.5px;
      letter-spacing:.2px;
      line-height:1.1;
    }
    .brand span{
      display:block;
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
    }

    .nav-right{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:10px;
      flex-wrap:wrap;
    }
    .menu{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
    }
    .menu a{
      text-decoration:none;
      color:var(--muted);
      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;
    }
    .menu a:hover{
      color:var(--text);
      border-color: rgba(230,227,220,.95);
      background: rgba(255,255,255,.65);
      transform: translateY(-1px);
    }

    .cta{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(36,87,255,.25);
      background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.65));
      box-shadow: 0 10px 22px rgba(36,87,255,.10);
      cursor:pointer;
      text-decoration:none;
      user-select:none;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .cta:hover{
      transform: translateY(-1px);
      box-shadow: 0 14px 32px rgba(36,87,255,.14);
      border-color: rgba(36,87,255,.45);
    }
    .cta .dot{
      width:10px;height:10px;border-radius:50%;
      background: radial-gradient(circle at 30% 30%, #fff, rgba(255,255,255,.25) 35%, rgba(255,255,255,0) 60%),
                  linear-gradient(135deg, var(--brand), var(--brand2));
      box-shadow: 0 0 0 4px rgba(36,87,255,.12);
      flex:0 0 auto;
    }
    .cta span{
      font-size:13.5px;
      color:var(--text);
      font-weight:650;
    }

    .hero{
      padding:22px 0 18px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:18px;
      align-items:start;
    }
    @media (max-width: 860px){
      .hero-grid{grid-template-columns:1fr}
      .brand{min-width:auto}
      .menu{display:none}
    }

    .hero-card{
      background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.55));
      border:1px solid rgba(230,227,220,.9);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow:hidden;
      position:relative;
      padding:18px;
    }
    .hero-card:before{
      content:"";
      position:absolute;
      top:-120px; right:-120px;
      width:280px;height:280px;
      background: radial-gradient(circle at 30% 30%, rgba(36,87,255,.22), transparent 60%),
                  radial-gradient(circle at 70% 60%, rgba(14,165,233,.18), transparent 58%);
      filter: blur(0px);
      pointer-events:none;
    }

    .breadcrumb-like{
      display:flex; align-items:center; gap:8px; flex-wrap:wrap;
      margin-bottom:10px;
      position:relative;
      z-index:1;
    }
    .pill{
      display:inline-flex; align-items:center; gap:8px;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.6);
      padding:8px 10px;
      border-radius:999px;
      color:var(--muted);
      font-size:12.5px;
      user-select:none;
      white-space:nowrap;
    }
    .pill 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(36,87,255,.12);
    }

    h1{
      margin:0;
      font-size:34px;
      letter-spacing:-.6px;
      line-height:1.15;
      position:relative;
      z-index:1;
    }
    @media (max-width: 520px){
      h1{font-size:28px}
    }
    .hero-sub{
      margin:10px 0 0;
      color:var(--muted);
      font-size:14.5px;
      line-height:1.6;
      position:relative;
      z-index:1;
      max-width:60ch;
    }

    .hero-actions{
      display:flex;
      gap:12px;
      align-items:center;
      margin-top:14px;
      flex-wrap:wrap;
      position:relative;
      z-index:1;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:12px;
      padding:11px 14px;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.7);
      text-decoration:none;
      cursor:pointer;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
      user-select:none;
      white-space:nowrap;
    }
    .btn:hover{
      transform: translateY(-1px);
      box-shadow: var(--shadow2);
      border-color: rgba(36,87,255,.30);
      background: rgba(255,255,255,.9);
    }
    .btn-primary{
      border-color: rgba(36,87,255,.35);
      background: linear-gradient(180deg, rgba(36,87,255,.98), rgba(36,87,255,.88));
      color:#fff;
      box-shadow: 0 18px 44px rgba(36,87,255,.20);
    }
    .btn-primary:hover{
      border-color: rgba(36,87,255,.55);
      box-shadow: 0 22px 58px rgba(36,87,255,.26);
      background: linear-gradient(180deg, rgba(36,87,255,1), rgba(36,87,255,.92));
    }
    .btn .arrow{
      width:10px;height:10px;
      border-right:2px solid currentColor;
      border-bottom:2px solid currentColor;
      transform: rotate(-45deg);
      opacity:.9;
    }

    .hero-side{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .side-card{
      background: rgba(255,255,255,.65);
      border:1px solid rgba(230,227,220,.9);
      border-radius: var(--radius);
      box-shadow: 0 10px 28px rgba(15,23,42,.06);
      padding:14px;
    }
    .side-title{
      font-size:14px;
      font-weight:720;
      margin:0 0 8px;
      letter-spacing:.1px;
    }
    .quick-list{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .quick-item{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:10px 10px;
      border-radius:12px;
      border:1px solid rgba(230,227,220,.8);
      background: rgba(255,255,255,.55);
      transition: transform .2s ease, border-color .2s ease;
    }
    .quick-item:hover{
      transform: translateY(-1px);
      border-color: rgba(36,87,255,.25);
    }
    .q-ico{
      width:30px;height:30px;border-radius:10px;
      background: linear-gradient(180deg, rgba(36,87,255,.14), rgba(14,165,233,.10));
      border:1px solid rgba(36,87,255,.20);
      display:flex;
      align-items:center;
      justify-content:center;
      color: rgba(36,87,255,.95);
      flex:0 0 auto;
      margin-top:1px;
    }
    .q-ico svg{width:16px;height:16px}
    .quick-item b{
      font-size:13.5px;
      display:block;
      margin-bottom:3px;
      letter-spacing:.1px;
    }
    .quick-item span{
      font-size:12.8px;
      color:var(--muted);
      line-height:1.4;
    }

    main{padding:8px 0 24px;}
    .section{
      margin-top:14px;
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:start;
    }
    @media (max-width: 900px){
      .grid-2{grid-template-columns:1fr}
    }

    .block{
      background: rgba(255,255,255,.62);
      border:1px solid rgba(230,227,220,.9);
      border-radius: var(--radius);
      padding:16px;
      box-shadow: 0 10px 26px rgba(15,23,42,.05);
    }
    .block h2{
      margin:0 0 10px;
      font-size:16px;
      letter-spacing:.1px;
    }
    .block p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }

    .steps{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      margin-top:12px;
    }
    @media (max-width: 520px){
      .steps{grid-template-columns:1fr}
    }
    .step{
      border-radius:14px;
      border:1px solid rgba(230,227,220,.9);
      background: rgba(255,255,255,.55);
      padding:12px;
      transition: transform .2s ease, border-color .2s ease;
    }
    .step:hover{
      transform: translateY(-1px);
      border-color: rgba(36,87,255,.25);
    }
    .step-top{
      display:flex;
      gap:10px;
      align-items:flex-start;
      margin-bottom:6px;
    }
    .num{
      width:26px;height:26px;border-radius:9px;
      background: linear-gradient(135deg, rgba(36,87,255,.14), rgba(14,165,233,.12));
      border:1px solid rgba(36,87,255,.22);
      display:flex;align-items:center;justify-content:center;
      font-size:13px;
      font-weight:750;
      color: rgba(36,87,255,.95);
      flex:0 0 auto;
    }
    .step b{
      font-size:14px;
      letter-spacing:.1px;
      display:block;
      margin-top:1px;
    }
    .step span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }

    .faq{
      padding:0;
      margin:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    details.faq-item{
      border:1px solid rgba(230,227,220,.9);
      background: rgba(255,255,255,.56);
      border-radius:14px;
      padding:12px 12px;
      transition: border-color .2s ease, transform .2s ease;
    }
    details.faq-item[open]{
      border-color: rgba(36,87,255,.28);
      box-shadow: 0 14px 36px rgba(36,87,255,.10);
    }
    summary{
      cursor:pointer;
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    summary::-webkit-details-marker{display:none}
    .faq-q{
      font-weight:740;
      font-size:14px;
      letter-spacing:.1px;
    }
    .chev{
      width:10px;height:10px;
      border-right:2px solid rgba(36,87,255,.75);
      border-bottom:2px solid rgba(36,87,255,.75);
      transform: rotate(-45deg);
      transition: transform .2s ease;
      flex:0 0 auto;
      margin-top:-2px;
    }
    details[open] .chev{transform: rotate(45deg); margin-top:2px}
    .faq-a{
      margin-top:10px;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }

    .form-wrap{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .form-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }
    .form-top h2{margin:0; font-size:16px; letter-spacing:.1px}
    .form-top p{margin:6px 0 0; color:var(--muted); font-size:14px; line-height:1.7; max-width:62ch}

    form{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      margin-top:6px;
    }
    @media (max-width: 720px){
      form{grid-template-columns:1fr}
    }
    .field{
      display:flex;
      flex-direction:column;
      gap:8px;
    }
    label{
      font-size:13px;
      color:var(--muted);
      user-select:none;
    }
    input, select{
      appearance:none;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.75);
      border-radius:12px;
      padding:11px 12px;
      font-size:14px;
      color:var(--text);
      outline:none;
      transition: box-shadow .2s ease, border-color .2s ease, background .2s ease;
    }
    input:focus, select:focus{
      border-color: rgba(36,87,255,.45);
      box-shadow: var(--focus);
      background: rgba(255,255,255,.95);
    }
    .full{grid-column: 1 / -1;}
    textarea{
      width:100%;
      min-height:96px;
      resize:vertical;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.75);
      border-radius:12px;
      padding:11px 12px;
      font-size:14px;
      color:var(--text);
      outline:none;
      transition: box-shadow .2s ease, border-color .2s ease, background .2s ease;
    }
    textarea:focus{
      border-color: rgba(36,87,255,.45);
      box-shadow: var(--focus);
      background: rgba(255,255,255,.95);
    }

    .form-actions{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      grid-column: 1 / -1;
      margin-top:2px;
      flex-wrap:wrap;
    }
    .note{
      color:var(--muted);
      font-size:12.8px;
      line-height:1.5;
      max-width:56ch;
    }
    .submit{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      padding:12px 16px;
      border-radius:12px;
      border:1px solid rgba(36,87,255,.35);
      background: linear-gradient(180deg, rgba(36,87,255,1), rgba(36,87,255,.88));
      color:#fff;
      font-weight:760;
      cursor:pointer;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, filter .2s ease;
      user-select:none;
      min-width: 168px;
    }
    .submit:hover{
      transform: translateY(-1px);
      box-shadow: 0 22px 58px rgba(36,87,255,.24);
      border-color: rgba(36,87,255,.55);
      filter:saturate(1.02);
    }
    .submit:disabled{
      cursor:not-allowed;
      opacity:.72;
      box-shadow:none;
      transform:none;
    }

    .status{
      grid-column: 1 / -1;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.55);
      border-radius:14px;
      padding:12px;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.6;
      display:none;
    }
    .status.show{display:block}
    .status.good{
      border-color: rgba(16,185,129,.25);
      background: rgba(16,185,129,.08);
      color: #065f46;
    }
    .status.bad{
      border-color: rgba(239,68,68,.25);
      background: rgba(239,68,68,.08);
      color: #7f1d1d;
    }

    .footer{
      margin-top:14px;
      border-top:1px solid rgba(230,227,220,.85);
      background: rgba(255,255,255,.55);
      color:#111827;
    }
    .footer .container{
      padding:18px 18px;
    }
    .foot-grid{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }
    .foot-left{
      display:flex; flex-direction:column; gap:6px;
      min-width:220px;
    }
    .foot-left strong{font-size:14px}
    .foot-left span{color:var(--muted); font-size:12.8px; line-height:1.5}
    .foot-links{
      display:flex; gap:10px; flex-wrap:wrap;
      align-items:center;
    }
    .foot-links a{
      text-decoration:none;
      font-size:13px;
      color:var(--muted);
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.6);
      transition: transform .2s ease, border-color .2s ease, background .2s ease, color .2s ease;
    }
    .foot-links a:hover{
      transform: translateY(-1px);
      color:var(--text);
      border-color: rgba(36,87,255,.28);
      background: rgba(255,255,255,.9);
    }
    .copyright{
      margin-top:12px;
      padding-top:12px;
      border-top:1px dashed rgba(230,227,220,.95);
      color:var(--muted);
      font-size:12.6px;
      line-height:1.5;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      flex-wrap:wrap;
    }
    .toTop{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(230,227,220,.95);
      background: rgba(255,255,255,.65);
      cursor:pointer;
      user-select:none;
      transition: transform .2s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .toTop:hover{
      transform: translateY(-1px);
      border-color: rgba(36,87,255,.28);
    }
    .toTop i{
      width:9px;height:9px;
      border-left:2px solid rgba(36,87,255,.85);
      border-top:2px solid rgba(36,87,255,.85);
      transform: rotate(45deg);
      display:inline-block;
      margin-top:2px;
    }

    .fade-in{
      opacity:0;
      transform: translateY(8px);
      animation: fi .6s ease forwards;
    }
    @keyframes fi{
      to{opacity:1; transform: translateY(0)}
    }