:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#18202d;
      --muted:#5b677a;
      --line:#dce5f2;
      --brand:#5b5eff;
      --brand2:#22c3ff;
      --accent:#8a5cff;
      --success:#15b67a;
      --shadow:0 18px 50px rgba(27,45,94,.10);
      --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 15% 10%, rgba(91,94,255,.12), transparent 26%),
        radial-gradient(circle at 85% 0%, rgba(34,195,255,.12), transparent 22%),
        linear-gradient(180deg,var(--bg),#fff 40%, var(--bg));
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    header,main,footer{position:relative}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(16px);
      background:rgba(246,248,252,.82);
      border-bottom:1px solid rgba(220,229,242,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:14px 0;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;box-shadow:0 8px 24px rgba(91,94,255,.12)}
    .brand strong{display:block;font-size:15px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .navlinks{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}
    .navlinks a{padding:10px 12px;border-radius:999px;color:#2a3444;font-size:13px}
    .navlinks a:hover,.navlinks a:focus{background:#fff;box-shadow:0 8px 24px rgba(27,45,94,.08)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:999px;border:1px solid transparent;
      font-weight:700;cursor:pointer;transition:.25s ease;
      box-shadow:0 10px 24px rgba(91,94,255,.12);
      white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-1px);box-shadow:0 16px 32px rgba(91,94,255,.18)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:11px 12px}
    .hero{padding:38px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.feature,.review,.faq-item,.info-card,.case,.article,.timeline-item,.compare,.form-card,.contact-card{
      background:linear-gradient(180deg,rgba(255,255,255,.94),#fff);
      border:1px solid rgba(220,229,242,.9);border-radius:var(--radius);
      box-shadow:var(--shadow)
    }
    .hero-main{padding:34px;overflow:hidden;position:relative}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;filter:blur(4px);pointer-events:none
    }
    .hero-main:before{width:220px;height:220px;background:rgba(91,94,255,.12);right:-60px;top:-60px}
    .hero-main:after{width:160px;height:160px;background:rgba(34,195,255,.12);left:55%;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(91,94,255,.08);color:#3743b8;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
    .mini{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#fff);
      border:1px solid var(--line)
    }
    .mini b{display:block;font-size:18px;color:#1f2c44}
    .mini span{display:block;margin-top:4px;font-size:12px;color:var(--muted)}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:14px}
    .side-stat{padding:16px;border-radius:18px;background:linear-gradient(135deg,rgba(91,94,255,.08),rgba(34,195,255,.08));border:1px solid rgba(91,94,255,.14)}
    .side-stat strong{display:block;font-size:28px}
    .side-stat span{color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f3f7ff;border:1px solid #dfe7fb;font-size:13px;color:#31415c}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;gap:14px;align-items:end;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.75}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .stat{padding:18px 16px}
    .stat strong{display:block;font-size:30px;line-height:1}
    .stat span{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.6}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .feature,.review,.case,.article,.timeline-item,.info-card,.compare,.form-card,.contact-card,.faq-item{padding:22px}
    .feature h3,.case h3,.article h3,.timeline-item h3,.info-card h3,.contact-card h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.75}
    .feature ul,.bullets{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .feature li,.bullets li{display:flex;gap:10px;align-items:flex-start;color:#2b3648;line-height:1.7}
    .dot{width:8px;height:8px;border-radius:50%;margin-top:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:none}
    .split{display:grid;grid-template-columns:1.1fr .9fr;gap:14px;align-items:start}
    .step-list{display:grid;gap:12px}
    .step{display:flex;gap:14px;padding:16px;border-radius:18px;background:#fbfcff;border:1px solid var(--line)}
    .step b{display:grid;place-items:center;width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;flex:none}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf2f8;text-align:left;vertical-align:top}
    th{background:#f7f9fe}
    .score{display:flex;flex-direction:column;gap:10px}
    .stars{color:#ffb800;font-size:18px;letter-spacing:2px}
    .progress{height:10px;border-radius:999px;background:#eef2ff;overflow:hidden}
    .progress span{display:block;height:100%;width:99%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
    .faq details{border-top:1px solid #edf2f8;padding:14px 0}
    .faq details:first-child{border-top:0;padding-top:0}
    .faq summary{cursor:pointer;list-style:none;font-weight:700}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:10px 0 0;color:var(--muted);line-height:1.8}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:8px;color:#2a3444}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;
      padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s
    }
    textarea{min-height:130px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#8aa3ff;box-shadow:0 0 0 4px rgba(91,94,255,.12)}
    .full{grid-column:1/-1}
    .reviews,.articles,.cases,.timeline,.network{display:grid;gap:14px}
    .review .name{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}
    .avatar{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,rgba(91,94,255,.16),rgba(34,195,255,.16));display:grid;place-items:center;font-weight:800;color:#344}
    .article small{display:inline-block;margin-bottom:10px;color:#465777;background:#eff4ff;padding:7px 10px;border-radius:999px}
    .footer{
      margin-top:14px;
      padding:24px 0 30px;
      background:#0f172a;
      color:#e7ecff;
    }
    .footer a{color:#e7ecff}
    .footer .muted{color:#b6c0e0}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:9px 11px;border-radius:999px;background:rgba(255,255,255,.08)}
    .copyright{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#b6c0e0}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:50px;height:50px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff;display:grid;place-items:center;box-shadow:0 18px 30px rgba(91,94,255,.24)
    }
    .float-btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .mobile-panel{display:none}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.65s ease}
    .scroll-reveal.in-view{opacity:1;transform:none}
    .comparison-card{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .kefu{display:flex;gap:14px;align-items:center}
    .kefu img{width:116px;height:116px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.comparison-card{grid-template-columns:1fr}
      .stats,.grid-3{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:1fr}
      .navlinks{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .navlinks{display:flex;flex-direction:column;align-items:stretch}
      .mobile-panel .navlinks a{background:#fff;border:1px solid var(--line)}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .container{width:min(var(--max),calc(100% - 22px))}
      .hero-main,.hero-side,.feature,.review,.faq-item,.info-card,.case,.article,.timeline-item,.compare,.form-card,.contact-card{padding:18px}
      .section-head{flex-direction:column;align-items:flex-start}
      h2{font-size:24px}
      .stats,.grid-3{grid-template-columns:1fr}
      .hero-main h1{font-size:30px}
      .nav-actions .btn-secondary{display:none}
    }