:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel-2:#f0f5ff;
      --text:#17304a;
      --muted:#5f6f85;
      --line:#dbe5f2;
      --brand:#5b5ff6;
      --brand-2:#00c2ff;
      --accent:#f04cff;
      --success:#2ebd85;
      --shadow:0 18px 50px rgba(21, 43, 78, .10);
      --radius:20px;
      --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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(91,95,246,.12), transparent 28%),
        radial-gradient(circle at 85% 18%, rgba(0,194,255,.12), transparent 22%),
        linear-gradient(180deg, #f9fbff 0%, #f4f7fc 42%, #f7f8fd 100%);
      line-height:1.7;
    }
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(248,250,255,.82);
      border-bottom:1px solid rgba(219,229,242,.85);
    }
    .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 20px rgba(91,95,246,.12)}
    .brand strong{display:block; font-size:18px; line-height:1.1}
    .brand span{display:block; color:var(--muted); font-size:12px}
    .menu-toggle{display:none; border:1px solid var(--line); background:#fff; color:var(--text); border-radius:12px; padding:10px 12px}
    .nav-links{display:flex; flex-wrap:wrap; justify-content:flex-end; gap:10px; align-items:center}
    .nav-links a{font-size:14px; color:var(--muted); padding:8px 10px; border-radius:999px; transition:.25s}
    .nav-links a:hover{color:var(--brand); background:rgba(91,95,246,.08)}
    .container-main{padding:22px 0 8px}
    .hero{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(91,95,246,.12);
      background:
        linear-gradient(135deg, rgba(91,95,246,.08), rgba(0,194,255,.08) 45%, rgba(240,76,255,.08)),
        linear-gradient(180deg, #ffffff, #f6f9ff);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:34px;
    }
    .hero::before,.hero::after{
      content:"";
      position:absolute; inset:auto;
      border-radius:50%;
      pointer-events:none;
      filter:blur(6px);
    }
    .hero::before{width:240px;height:240px; right:-70px; top:-70px; background:radial-gradient(circle, rgba(0,194,255,.28), transparent 65%)}
    .hero::after{width:200px;height:200px; left:-60px; bottom:-70px; background:radial-gradient(circle, rgba(240,76,255,.20), transparent 65%)}
    .hero-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:24px; align-items:stretch; position:relative; z-index:1}
    h1{margin:14px 0 14px; font-size:clamp(30px, 4vw, 52px); line-height:1.05; letter-spacing:-.03em}
    .lead{margin:0; color:var(--muted); font-size:16px; max-width:60ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0 0}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border-radius:14px; padding:12px 18px; border:1px solid transparent;
      font-weight:700; transition:.25s ease; cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand-2)); color:#fff; box-shadow:0 12px 26px rgba(91,95,246,.24)}
    .btn-secondary{background:#fff; color:var(--text); border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-mini{
      display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:14px;
    }
    .glass{
      background:rgba(255,255,255,.76);
      border:1px solid rgba(219,229,242,.9);
      border-radius:22px; padding:18px;
      box-shadow:0 12px 30px rgba(23,48,74,.06);
    }
    .metric strong{display:block; font-size:28px; color:var(--brand)}
    .metric span{color:var(--muted); font-size:13px}
    section{padding:18px 0}
    .section-card{
      background:rgba(255,255,255,.82);
      border:1px solid rgba(219,229,242,.85);
      border-radius:26px;
      box-shadow:var(--shadow);
      padding:28px;
    }
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:18px}
    .section-head h2{margin:0; font-size:26px}
    .section-head p{margin:0; color:var(--muted)}
    .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, #f8fbff);
      border:1px solid var(--line);
      border-radius:22px;
      padding:20px;
      box-shadow:0 10px 24px rgba(23,48,74,.05);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-3px); box-shadow:0 18px 32px rgba(23,48,74,.08)}
    .card h3{margin:0 0 8px; font-size:18px}
    .card p,.card li{color:var(--muted)}
    .list{margin:0; padding-left:18px}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:8px 12px; border-radius:999px; background:#eef5ff; border:1px solid #dbe7ff; color:#355171; font-size:13px}
    .timeline{display:grid; gap:14px}
    .step{display:grid; grid-template-columns:auto 1fr; gap:14px; align-items:start}
    .step .num{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-weight:700}
    .table-wrap{overflow:auto}
    table{width:100%; border-collapse:collapse; min-width:760px; background:#fff; border-radius:18px; overflow:hidden}
    th,td{padding:14px 12px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:#f2f7ff; color:#27425e}
    .rating{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
    .stars{color:#ffb400; letter-spacing:2px}
    .faq details{border:1px solid var(--line); border-radius:18px; background:#fff; padding:14px 16px}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer; font-weight:700; list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .reviews{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px}
    .quote{position:relative}
    .quote:before{content:"“"; position:absolute; font-size:54px; color:rgba(91,95,246,.16); left:14px; top:-6px; font-family:serif}
    .article-list{display:grid; gap:12px}
    .article-item{display:flex; justify-content:space-between; gap:12px; padding:14px 16px; border-radius:16px; background:#fff; border:1px solid var(--line)}
    .article-item span{color:var(--muted); font-size:13px}
    form{display:grid; gap:14px}
    .field-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    label{display:grid; gap:8px; font-size:14px; color:#28425e; font-weight:600}
    input,select,textarea{
      width:100%; border:1px solid var(--line); border-radius:14px; padding:12px 14px;
      background:#fff; color:var(--text); font:inherit; outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(91,95,246,.55); box-shadow:0 0 0 4px rgba(91,95,246,.08)}
    textarea{min-height:120px; resize:vertical}
    .footer{
      margin-top:10px;
      padding:26px 0 30px;
      background:linear-gradient(180deg, #f6f8ff, #eef3fb);
      border-top:1px solid var(--line);
      color:var(--text);
    }
    .footer a{color:#2f5ae8}
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:20px; align-items:start}
    .muted{color:var(--muted)}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60;
      display:grid; gap:10px;
    }
    .floating a,.floating button{
      width:50px; height:50px; border-radius:16px; border:1px solid var(--line);
      background:#fff; box-shadow:var(--shadow); display:grid; place-items:center; color:var(--brand); cursor:pointer;
    }
    .sidebar-kefu{
      position:fixed; left:16px; bottom:16px; z-index:60;
      width:min(320px, calc(100vw - 32px));
      display:none;
    }
    .kefu-card{padding:14px}
    .kefu-card img{width:100%; border-radius:16px; margin-top:10px}
    .mobile-only{display:none}
    .anchor{scroll-margin-top:90px}
    .page-links{display:flex; flex-wrap:wrap; gap:12px}
    .page-links a{padding:10px 14px; border-radius:14px; background:#fff; border:1px solid var(--line); color:var(--text)}
    @media (max-width: 960px){
      .hero-grid,.grid-3,.reviews,.footer-grid,.grid-2,.field-grid{grid-template-columns:1fr}
      .nav-links{display:none; width:100%; padding-top:10px}
      .nav-links.open{display:flex; flex-direction:column; align-items:flex-start}
      .menu-toggle{display:inline-flex}
      .nav{flex-wrap:wrap}
      .mobile-only{display:block}
      .hero{padding:22px}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .section-card,.hero{border-radius:22px; padding:18px}
      h1{font-size:28px}
      .section-head{flex-direction:column; align-items:flex-start}
      .hero-mini{grid-template-columns:1fr}
    }
    .reveal{opacity:0; transform:translateY(18px); transition:.6s ease}
    .reveal.show{opacity:1; transform:none}