:root{
      --bg:#f7f9fc;
      --card:#ffffff;
      --card-2:#f2f7ff;
      --text:#1d2433;
      --muted:#5d667a;
      --line:#dbe5f4;
      --brand:#1366ff;
      --brand-2:#28c2ff;
      --accent:#12b981;
      --warm:#ffb347;
      --shadow:0 14px 40px rgba(20,40,90,.08);
      --shadow-2:0 10px 24px rgba(19,102,255,.12);
      --radius:20px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(40,194,255,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(19,102,255,.14), transparent 24%),
        linear-gradient(180deg,#f9fbff 0%, #f4f8ff 45%, #f8fbff 100%);
    }
    a{color:var(--brand);text-decoration:none}
    a:hover{text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--max));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(14px);
      background:rgba(247,249,252,.78);
      border-bottom:1px solid rgba(219,229,244,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:14px;align-items:center}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#eaf2ff;color:var(--brand)}
    .nav-actions{display:flex;gap:10px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:12px 18px;
      font-weight:700;font-size:14px;cursor:pointer;transition:.22s ease;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-2)}
    .btn-primary:hover{transform:translateY(-1px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
    .btn-ghost:hover{background:#f2f7ff}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);color:var(--text)}
    .hero{
      padding:48px 0 28px;
      position:relative;
      overflow:hidden;
    }
    .hero-inner{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-copy{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(247,250,255,.94));
      border:1px solid rgba(219,229,244,.95);
      box-shadow:var(--shadow);
      border-radius:28px;
      padding:30px;
      position:relative;
      overflow:hidden;
    }
    .hero-copy:before,.hero-copy:after{
      content:"";position:absolute;border-radius:999px;filter:blur(0);
      background:radial-gradient(circle, rgba(19,102,255,.18), rgba(19,102,255,0) 68%);
      pointer-events:none;
    }
    .hero-copy:before{width:220px;height:220px;right:-80px;top:-70px}
    .hero-copy:after{width:180px;height:180px;left:-60px;bottom:-70px;background:radial-gradient(circle, rgba(40,194,255,.16), rgba(40,194,255,0) 68%)}
    .kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eaf4ff;color:#0f56d8;font-weight:700;font-size:13px}
    h1{font-size:clamp(30px,4vw,52px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:44em}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;box-shadow:0 8px 18px rgba(22,36,68,.05)
    }
    .mini b{display:block;font-size:18px;margin-bottom:4px;color:#10213e}
    .mini span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{
      display:grid;gap:14px
    }
    .glass{
      background:linear-gradient(180deg, rgba(19,102,255,.11), rgba(255,255,255,.9));
      border:1px solid rgba(19,102,255,.12);
      border-radius:28px;padding:24px;box-shadow:var(--shadow)
    }
    .glass h2{margin:0 0 10px;font-size:22px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
      font-size:13px;color:#31405a;box-shadow:0 6px 14px rgba(15,35,72,.04)
    }
    .metrics{padding:18px 0 4px}
    .section{padding:26px 0}
    .section-header{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-header h2{margin:0;font-size:28px;line-height:1.15}
    .section-header p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{
      background:var(--card);
      border:1px solid rgba(219,229,244,.95);
      border-radius:var(--radius);
      padding:20px;
      box-shadow:0 10px 28px rgba(15,35,72,.06);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(15,35,72,.1);border-color:#cfe0ff}
    .metric .num{font-size:30px;font-weight:800;line-height:1;color:#0f56d8}
    .metric .label{margin-top:10px;font-weight:700}
    .metric .desc{margin-top:6px;color:var(--muted);font-size:13px;line-height:1.6}
    .service h3,.step h3,.case h3,.review h3,.article h3,.faq summary,.help h3{margin:0 0 10px;font-size:18px}
    .service p,.step p,.case p,.review p,.article p,.help p{margin:0;color:var(--muted);line-height:1.75}
    .service .icon,.step .icon{
      width:44px;height:44px;border-radius:14px;
      display:grid;place-items:center;font-weight:800;color:#fff;margin-bottom:14px;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:var(--shadow-2)
    }
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start
    }
    .panel{
      background:linear-gradient(180deg,#fff,#f7fbff);
      border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)
    }
    .list{margin:0;padding:0;list-style:none;display:grid;gap:12px}
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--text);line-height:1.7}
    .dot{
      width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));flex:0 0 auto;margin-top:9px
    }
    .process{counter-reset:step}
    .process .step{position:relative;padding-top:20px}
    .process .step:before{
      counter-increment:step;content:counter(step);
      position:absolute;top:16px;right:18px;
      width:34px;height:34px;border-radius:50%;
      background:#edf4ff;color:#0f56d8;font-weight:800;display:grid;place-items:center
    }
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:920px}
    th,td{padding:16px 14px;border-bottom:1px solid #e9eef7;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#24324a;font-size:14px}
    td{color:#374155;font-size:14px;line-height:1.7}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:7px 10px;border-radius:999px;background:#eaf7ef;color:#11754f;font-size:12px;font-weight:700
    }
    .score{
      display:flex;flex-wrap:wrap;gap:12px;align-items:center
    }
    .score .star{color:#ff9f1a;font-size:20px;letter-spacing:1px}
    .score strong{font-size:22px}
    .faq-item{
      border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden
    }
    .faq-item + .faq-item{margin-top:12px}
    .faq summary{
      list-style:none;cursor:pointer;padding:18px 18px 18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq .plus{font-size:22px;color:var(--brand);flex:0 0 auto}
    .faq-item[open]{box-shadow:var(--shadow)}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .avatar{
      width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,#dfeaff,#eef8ff);color:#1348cc;font-weight:800
    }
    .review .role{color:var(--muted);font-size:13px;margin-top:2px}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .article .meta{font-size:13px;color:#7b869c;margin-bottom:10px}
    .article a{font-weight:700}
    .resources{
      display:grid;grid-template-columns:1.1fr .9fr;gap:14px;align-items:start
    }
    .image-card{
      overflow:hidden;padding:0
    }
    .image-card img{width:100%;height:auto;display:block}
    .image-card .cap{padding:16px 18px}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:13px;font-weight:700;color:#25324b}
    input,select,textarea{
      width:100%;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:14px;padding:13px 14px;font:inherit;outline:none;transition:.2s
    }
    input:focus,select:focus,textarea:focus{border-color:#8ab4ff;box-shadow:0 0 0 4px rgba(19,102,255,.08)}
    textarea{min-height:128px;resize:vertical}
    .footer{
      margin-top:10px;padding:28px 0 26px;border-top:1px solid rgba(219,229,244,.9);
      background:linear-gradient(180deg,#f8fbff,#f1f6ff)
    }
    .footer .grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:14px}
    .footer a{color:#174fb8}
    .footer p,.footer li,.footer span{color:#49556d;line-height:1.8}
    .copy{margin-top:18px;padding-top:16px;border-top:1px solid #dde7f6;color:#5f6a81;font-size:13px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-2);font-size:13px;font-weight:800;text-align:center;padding:6px
    }
    .float-btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--line)}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(16px);transition:all .65s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-inner,.split,.resources,.footer .grid,.grid-4,.grid-3,.grid-2,.articles{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .hero{padding-top:28px}
    }
    @media (max-width: 720px){
      .container{width:min(100% - 22px,var(--max))}
      .hero-inner,.split,.resources,.footer .grid,.grid-4,.grid-3,.grid-2,.articles,.hero-points,.form{grid-template-columns:1fr}
      .hero-copy,.glass,.panel,.card{padding:18px}
      .section{padding:20px 0}
      .section-header{flex-direction:column;align-items:flex-start}
      .nav{min-height:64px}
      .brand strong{font-size:16px}
      .menu-panel{
        display:none;position:absolute;left:0;right:0;top:72px;background:rgba(247,249,252,.98);
        border-bottom:1px solid var(--line);box-shadow:0 16px 32px rgba(15,35,72,.08)
      }
      .menu-panel.open{display:block}
      .menu-panel .nav-links{
        display:flex;flex-direction:column;align-items:flex-start;padding:14px 16px 10px
      }
      .menu-panel .nav-actions{padding:0 16px 16px}
      .mobile-only{display:block}
      .desktop-only{display:none}
    }