:root{
      --bg:#f6f8ff;
      --panel:#ffffff;
      --panel-2:#f9fbff;
      --text:#172033;
      --muted:#5c6478;
      --line:#e4eaf6;
      --brand:#6c63ff;
      --brand-2:#23c4a7;
      --brand-3:#ff9f43;
      --shadow:0 16px 40px rgba(20,35,80,.08);
      --radius:22px;
      --radius-sm:16px;
      --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(108,99,255,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(35,196,167,.10), transparent 24%),
        linear-gradient(180deg, #f8faff 0%, #f6f8ff 38%, #f7f9ff 100%);
      line-height:1.7;
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--max);margin:0 auto;padding:0 18px}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(12px);
      background:rgba(246,248,255,.82);
      border-bottom:1px solid rgba(228,234,246,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .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;padding:4px;box-shadow:0 8px 18px rgba(20,35,80,.08)}
    .brand strong{font-size:18px;letter-spacing:.2px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px}
    .menu a:hover,.menu a:focus{background:rgba(108,99,255,.08);color:var(--brand)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:11px 16px;font-weight:700;font-size:14px;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-1px);box-shadow:0 12px 24px rgba(20,35,80,.12)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#7b8cff);color:#fff}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-card{
      background:
        linear-gradient(135deg, rgba(108,99,255,.10), rgba(35,196,167,.08)),
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,255,255,.92));
      border:1px solid rgba(228,234,246,.92);
      border-radius:28px;
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#3c4480;background:#eef1ff;border:1px solid #dde3ff;padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 14px;font-size:clamp(32px,4vw,54px);line-height:1.12;letter-spacing:-.02em}
    .lead{font-size:17px;color:var(--muted);max-width:58ch;margin:0 0 22px}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini{
      padding:14px 14px;border-radius:18px;background:rgba(255,255,255,.78);
      border:1px solid rgba(228,234,246,.95)
    }
    .mini strong{display:block;font-size:16px;margin-bottom:4px}
    .mini span{font-size:13px;color:var(--muted)}
    .hero-side{padding:24px;display:flex;flex-direction:column;gap:16px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
    .metric .num{font-size:26px;font-weight:800;color:#1e2a4a}
    .metric .txt{font-size:13px;color:var(--muted)}
    .side-panel{
      background:linear-gradient(180deg,#fff, #f9fbff);
      border:1px solid var(--line);border-radius:22px;padding:18px
    }
    .side-panel h3{margin:0 0 10px;font-size:18px}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 11px;border-radius:999px;background:#f2f5ff;color:#2d3665;font-size:13px;border:1px solid #e3e8ff}
    section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 10px 28px rgba(20,35,80,.05);
      padding:22px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(20,35,80,.09);border-color:#d5ddf4}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(108,99,255,.14), rgba(35,196,167,.12));
      color:var(--brand);font-weight:900;margin-bottom:14px
    }
    .img-card{padding:0;overflow:hidden}
    .img-card .body{padding:18px 20px 20px}
    .img-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
    .img-card.square img{aspect-ratio:1/1}
    .process{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;padding:20px;background:linear-gradient(180deg,#fff,#fbfcff);border:1px solid var(--line);border-radius:22px}
    .step b{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:#eef1ff;color:var(--brand);margin-bottom:12px}
    .compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7f9ff;font-size:14px}
    td{font-size:14px;color:#34405f}
    .rating{color:#ff9f43;font-weight:800}
    .split{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start
    }
    .list{display:grid;gap:12px}
    .list-item{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .list-item .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-top:8px;flex:none}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;font-size:14px}
    input,select,textarea{
      width:100%;border:1px solid #dfe5f3;background:#fff;border-radius:14px;
      padding:13px 14px;font:inherit;color:var(--text);outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:#aab5ea;box-shadow:0 0 0 4px rgba(108,99,255,.08)}
    textarea{min-height:120px;resize:vertical}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;
      box-shadow:0 10px 28px rgba(20,35,80,.04)
    }
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:12px 0 0;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;top:12px;right:16px;font-size:54px;color:#e8ecfb;line-height:1}
    .article-list{display:grid;gap:12px}
    .article{
      display:flex;justify-content:space-between;gap:16px;align-items:center;
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px
    }
    .article strong{display:block;margin-bottom:6px}
    .article span{color:var(--muted);font-size:13px}
    .footer{
      margin-top:20px;padding:24px 0 32px;border-top:1px solid var(--line);background:#f7f9ff;color:#24314b
    }
    .footer a{color:#24314b}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .foot-links{display:flex;flex-wrap:wrap;gap:10px}
    .foot-links a{padding:7px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;border:none;display:grid;place-items:center;
      box-shadow:0 14px 28px rgba(20,35,80,.14);background:linear-gradient(135deg,var(--brand),#7b8cff);color:#fff;font-weight:900
    }
    .float-panel{
      position:fixed;right:16px;bottom:82px;z-index:61;width:min(320px,calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 20px 48px rgba(20,35,80,.16);
      padding:16px;display:none
    }
    .float-panel.open{display:block}
    .float-panel img{width:100%;border-radius:16px;border:1px solid var(--line)}
    .fade-up{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
    .fade-up.in{opacity:1;transform:none}
    .anchor-title{display:flex;align-items:center;gap:10px}
    .anchor-title:before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.reviews,.process{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head,.nav{align-items:flex-start;flex-direction:column}
      .menu{display:none;width:100%;padding:10px 0 4px}
      .menu.open{display:flex}
      .nav-actions{width:100%;justify-content:space-between}
      .menu-toggle{display:inline-flex}
    }
    @media (max-width: 640px){
      .hero-main,.hero-side,.card{padding:18px}
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.reviews,.process,.form{grid-template-columns:1fr}
      .metric-grid{grid-template-columns:1fr 1fr}
      .section-head h2{font-size:24px}
      h1{font-size:30px}
      .desktop-only{display:none}
      .mobile-only{display:block}
    }