:root{
      --bg:#f6f8fc;
      --bg2:#eef3ff;
      --card:#ffffff;
      --card2:#fbfcff;
      --line:#dbe4f3;
      --text:#172033;
      --muted:#5d6b84;
      --brand:#2f62ff;
      --brand2:#8a4dff;
      --accent:#14b8a6;
      --warm:#ffb84d;
      --shadow:0 18px 48px rgba(35, 55, 105, .12);
      --shadow2:0 10px 24px rgba(47, 98, 255, .12);
      --radius:22px;
      --radius2:16px;
      --container: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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(47,98,255,.11), transparent 28%),
        radial-gradient(circle at 85% 15%, rgba(138,77,255,.12), transparent 24%),
        radial-gradient(circle at 50% 65%, rgba(20,184,166,.08), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #f5f7fc 55%, #f7f9fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(14px);
      background: rgba(246,248,252,.84);
      border-bottom:1px solid rgba(219,228,243,.8);
    }
    .header-inner{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:74px;padding:12px 0;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
    }
    .brand .logo-wrap{
      width:46px;height:46px;border-radius:14px;background:#fff;border:1px solid var(--line);
      display:grid;place-items:center;box-shadow:var(--shadow2);overflow:hidden;flex:0 0 auto;
    }
    .brand img{object-fit:contain}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1rem;line-height:1.15}
    .brand-text span{display:block;font-size:.82rem;color:var(--muted);margin-top:3px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f4f7ff);
      color:var(--text);border-radius:14px;padding:10px 12px;font-size:.95rem;cursor:pointer;
      box-shadow:0 8px 18px rgba(35,55,105,.08);
    }
    nav{display:flex;align-items:center;gap:14px}
    .nav-links{
      display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end;
    }
    .nav-links a{
      font-size:.92rem;color:#30405f;padding:8px 10px;border-radius:10px;transition:.2s ease;
    }
    .nav-links a:hover,.nav-links a:focus-visible{background:#eaf0ff;color:#1730a8}
    .top-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:14px;padding:12px 16px;font-weight:700;
      transition:.2s ease;cursor:pointer;white-space:nowrap;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--brand) 0%,var(--brand2) 100%);
      color:#fff;box-shadow:0 14px 30px rgba(47,98,255,.28);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(47,98,255,.34)}
    .btn-ghost{
      background:#fff;color:#21314f;border-color:var(--line);box-shadow:0 8px 18px rgba(35,55,105,.06);
    }
    .btn-ghost:hover{border-color:#b9c7e5;transform:translateY(-2px)}
    .hero{
      padding:28px 0 18px;
    }
    .hero-box{
      position:relative;overflow:hidden;border:1px solid rgba(219,228,243,.9);
      border-radius:32px;background:
        linear-gradient(135deg, rgba(255,255,255,.88), rgba(245,248,255,.82)),
        radial-gradient(circle at 20% 15%, rgba(47,98,255,.16), transparent 22%),
        radial-gradient(circle at 82% 28%, rgba(138,77,255,.15), transparent 24%),
        linear-gradient(180deg,#fff,#f7faff);
      box-shadow:var(--shadow);
      padding:30px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      color:#2340b7;background:#edf3ff;border:1px solid #d8e3ff;
      padding:8px 12px;border-radius:999px;font-size:.88rem;font-weight:700;
    }
    h1{
      margin:16px 0 14px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;letter-spacing:-.03em;
    }
    .lead{
      margin:0;color:var(--muted);font-size:1.02rem;line-height:1.85;max-width:62ch;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{
      margin-top:18px;display:flex;flex-wrap:wrap;gap:10px
    }
    .chip{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
      color:#2b3957;font-size:.9rem;box-shadow:0 8px 18px rgba(35,55,105,.05)
    }
    .hero-side{
      display:grid;gap:14px;align-content:start
    }
    .stat-card{
      background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);
      border-radius:24px;padding:18px;box-shadow:0 10px 22px rgba(35,55,105,.08)
    }
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .stat{
      padding:14px;border-radius:18px;background:linear-gradient(135deg,#f7f9ff,#ffffff);
      border:1px solid #e4ebf7
    }
    .stat strong{display:block;font-size:1.45rem;line-height:1.1}
    .stat span{display:block;color:var(--muted);font-size:.88rem;margin-top:6px}
    .mini-note{
      margin-top:12px;color:var(--muted);font-size:.92rem;line-height:1.7
    }
    main{padding-bottom:10px}
    section{padding:18px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px
    }
    .section-head h2{margin:0;font-size:1.7rem;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.75}
    .panel{
      background:rgba(255,255,255,.88);border:1px solid rgba(219,228,243,.92);
      border-radius:28px;box-shadow:var(--shadow);padding:22px;
    }
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{
      background:linear-gradient(180deg,#fff,#fbfcff);
      border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 24px rgba(35,55,105,.06);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 32px rgba(35,55,105,.10);border-color:#cfd9ec}
    .card h3{margin:0 0 10px;font-size:1.08rem}
    .card p{margin:0;color:var(--muted);line-height:1.8}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;margin-bottom:12px;
      background:linear-gradient(135deg, rgba(47,98,255,.15), rgba(138,77,255,.12));color:#1c43c9;font-weight:800
    }
    .data-strip{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;
    }
    .data-item{
      padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line)
    }
    .data-item strong{display:block;font-size:1.45rem}
    .data-item span{display:block;margin-top:4px;color:var(--muted);font-size:.9rem;line-height:1.5}
    .feature-list{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px
    }
    .feature{
      padding:14px 14px 14px 16px;border-radius:18px;background:linear-gradient(180deg,#ffffff,#f9fbff);
      border:1px solid #e3eaf8;display:flex;gap:10px;align-items:flex-start
    }
    .dot{width:10px;height:10px;border-radius:50%;margin-top:7px;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:0 0 auto}
    .flow{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px
    }
    .step{
      position:relative;padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line)
    }
    .step .num{
      display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:12px
    }
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:900px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f8;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#21314f;font-size:.95rem}
    td{color:#34435f;line-height:1.7}
    .rating{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:stretch
    }
    .score-card{
      background:linear-gradient(135deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:24px;padding:20px
    }
    .stars{color:#ffb428;font-size:1.2rem;letter-spacing:2px}
    .big-score{
      font-size:3rem;line-height:1;font-weight:900;background:linear-gradient(135deg,var(--brand),var(--brand2));
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
    .badge{
      padding:8px 12px;border-radius:999px;background:#edf3ff;border:1px solid #d9e3ff;color:#2740a8;font-size:.88rem
    }
    .quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{
      padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line)
    }
    .quote strong{display:block;margin-top:12px}
    .quote span{display:block;color:var(--muted);font-size:.9rem;margin-top:4px}
    .case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .case{
      display:grid;grid-template-columns:140px 1fr;gap:14px;align-items:center
    }
    .case img{border-radius:18px;border:1px solid var(--line);background:#f4f7ff}
    .timeline{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px
    }
    .timeline-item{
      padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item strong{display:block;margin-bottom:8px}
    .tag-cloud{
      display:flex;flex-wrap:wrap;gap:10px
    }
    .tag-cloud .chip{background:#fff}
    .compare-strip{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px
    }
    .compare-box{
      padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line)
    }
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 8px 18px rgba(35,55,105,.05)
    }
    .faq details+details{margin-top:12px}
    .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);line-height:1.8}
    .form-grid{
      display:grid;grid-template-columns:1fr 1fr;gap:12px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:.92rem;font-weight:700;color:#2a3753}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #d8e2f2;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#88a9ff;box-shadow:0 0 0 4px rgba(47,98,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:12px}
    .form-note{color:var(--muted);font-size:.9rem;line-height:1.7}
    .footer{
      margin-top:10px;background:linear-gradient(180deg,#f8fbff,#eef3ff);
      border-top:1px solid #dbe4f3;color:#20304d
    }
    .footer-grid{
      display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;padding:26px 0
    }
    .footer h3,.footer h4{margin:0 0 12px}
    .footer p,.footer a,.footer li{color:#30425f;line-height:1.8}
    .footer ul{margin:0;padding:0;list-style:none}
    .footer .links{display:flex;flex-wrap:wrap;gap:10px}
    .footer .links a{padding:8px 10px;border-radius:10px;background:#fff;border:1px solid var(--line)}
    .copyright{
      border-top:1px solid #dbe4f3;padding:14px 0 18px;color:#4f5e7a;font-size:.92rem
    }
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:18px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 18px 30px rgba(47,98,255,.28);
      border:0;cursor:pointer
    }
    .contact-fab{
      position:fixed;left:16px;bottom:16px;z-index:60;
      background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:var(--shadow);
      max-width:240px
    }
    .contact-fab strong{display:block;margin-bottom:4px}
    .contact-fab span{display:block;color:var(--muted);font-size:.9rem;line-height:1.5}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease, transform .55s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.rating,.footer-grid,.case-grid,.grid-3,.grid-2,.quote-grid,.compare-strip,.timeline,.flow,.data-strip{grid-template-columns:1fr 1fr}
      .hero-box{padding:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .header-inner{position:relative}
      .nav-toggle{display:inline-flex}
      nav{
        position:absolute;left:0;right:0;top:100%;padding:12px 0 4px;display:none;
      }
      nav.open{display:block}
      .nav-links{
        background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);
        flex-direction:column;align-items:stretch
      }
      .top-actions{display:none}
      .hero{padding-top:18px}
      .hero-grid,.rating,.grid-3,.grid-2,.quote-grid,.compare-strip,.timeline,.flow,.data-strip,.feature-list,.case-grid,.form-grid{grid-template-columns:1fr}
      h1{font-size:2.1rem}
      .hero-actions .btn{width:100%}
      .stat-grid{grid-template-columns:1fr 1fr}
      .contact-fab{display:none}
      .mobile-only{display:block}
    }