:root{
      --bg:#f7f4ee;
      --bg2:#eef4ff;
      --card:#ffffffcc;
      --card-solid:#ffffff;
      --text:#172033;
      --muted:#5f6778;
      --line:#dde5f2;
      --brand:#1f5eff;
      --brand2:#7b5cff;
      --brand3:#17b3a3;
      --shadow:0 18px 50px rgba(22,35,66,.10);
      --shadow2:0 10px 28px rgba(31,94,255,.14);
      --radius:22px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(31,94,255,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(23,179,163,.11), transparent 30%),
        linear-gradient(180deg, #fff 0%, var(--bg) 48%, #fdfdfc 100%);
      min-height:100vh;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:20;
      backdrop-filter:saturate(180%) blur(18px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(221,229,242,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:18px;
      padding:14px 0;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand .logo{
      width:42px; height:42px; object-fit:contain; border-radius:12px;
      background:#fff; box-shadow:0 8px 20px rgba(0,0,0,.06);
    }
    .brand strong{font-size:1.02rem; letter-spacing:.4px}
    .brand span{display:block; font-size:.82rem; color:var(--muted); margin-top:2px}
    .nav-toggle{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:14px; padding:10px 12px; cursor:pointer;
    }
    .nav-links{
      display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end;
    }
    .nav-links a{
      font-size:.95rem; color:#334155; padding:8px 10px; border-radius:10px;
      transition:.2s ease;
    }
    .nav-links a:hover,.nav-links a.active{background:rgba(31,94,255,.08); color:var(--brand)}
    .cta{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 18px; border-radius:999px; border:1px solid transparent;
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff; box-shadow:var(--shadow2); transition:transform .2s ease, box-shadow .2s ease;
      white-space:nowrap;
    }
    .cta:hover{transform:translateY(-1px); box-shadow:0 14px 34px rgba(31,94,255,.22)}
    .hero{
      position:relative; overflow:hidden;
      padding:38px 0 24px;
    }
    .hero::before,.hero::after{
      content:""; position:absolute; inset:auto; border-radius:999px; pointer-events:none;
      filter:blur(10px); opacity:.7;
    }
    .hero::before{width:240px;height:240px;background:radial-gradient(circle, rgba(123,92,255,.20), transparent 62%); right:-80px; top:24px}
    .hero::after{width:280px;height:280px;background:radial-gradient(circle, rgba(23,179,163,.14), transparent 64%); left:-110px; top:180px}
    .hero-grid{
      display:grid; grid-template-columns:1.25fr .75fr; gap:22px; align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.quote,.form-wrap,.compare,.info-box,.timeline,.article-list,.tag-cloud,.network{
      background:var(--card);
      backdrop-filter:blur(12px);
      border:1px solid rgba(221,229,242,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:linear-gradient(135deg, rgba(31,94,255,.10), rgba(23,179,163,.10));
      color:#224aab; font-size:.9rem; margin-bottom:16px;
    }
    h1{font-size:clamp(2rem, 4vw, 3.8rem); line-height:1.08; margin:0 0 14px}
    .lead{font-size:1.04rem; line-height:1.8; color:var(--muted); max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0 20px}
    .ghost{
      display:inline-flex; align-items:center; justify-content:center; padding:12px 18px; border-radius:999px;
      border:1px solid var(--line); background:#fff; color:var(--text); transition:.2s ease;
    }
    .ghost:hover{border-color:#bed0ff; transform:translateY(-1px)}
    .mini-stats{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:18px}
    .stat{padding:15px 14px; border-radius:18px; background:linear-gradient(180deg,#fff, #f8fbff); border:1px solid var(--line)}
    .stat strong{display:block; font-size:1.35rem; color:var(--brand)}
    .stat span{display:block; color:var(--muted); font-size:.88rem; line-height:1.5; margin-top:6px}
    .hero-side{padding:20px; display:grid; gap:14px}
    .side-top{padding:18px; border-radius:18px; background:linear-gradient(135deg, rgba(31,94,255,.08), rgba(123,92,255,.08)); border:1px solid rgba(31,94,255,.12)}
    .side-top h2,.section-title h2{margin:0 0 10px; font-size:1.45rem}
    .side-top p,.section-desc{margin:0; color:var(--muted); line-height:1.75}
    .support-list{display:grid; gap:10px}
    .support-list div{display:flex; justify-content:space-between; gap:12px; padding:11px 12px; border-radius:14px; background:#fff; border:1px solid var(--line); font-size:.95rem}
    .support-list b{color:#20324d}
    .section{padding:24px 0}
    .section-title{display:flex; align-items:end; justify-content:space-between; gap:18px; margin-bottom:16px}
    .section-title p{margin:0; color:var(--muted); line-height:1.7; max-width:70ch}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
    .card{padding:20px}
    .card h3{margin:12px 0 8px; font-size:1.06rem}
    .card p,.card li,.muted{color:var(--muted); line-height:1.72}
    .badge{
      display:inline-flex; align-items:center; gap:6px;
      padding:6px 10px; border-radius:999px; font-size:.82rem;
      background:rgba(31,94,255,.09); color:#2450c7;
    }
    .metric{
      display:grid; gap:6px; padding:18px; border-radius:20px;
      background:linear-gradient(135deg, #fff, #f7fbff); border:1px solid var(--line);
    }
    .metric strong{font-size:1.7rem; color:var(--brand)}
    .metric span{font-size:.92rem; color:var(--muted)}
    .flow{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .step{
      padding:20px; border-radius:20px; background:#fff; border:1px solid var(--line); position:relative;
    }
    .step:before{
      content:attr(data-step); position:absolute; top:16px; right:16px;
      font-size:.85rem; color:#7a8baa; background:#f3f7ff; border-radius:999px; padding:6px 10px;
    }
    .compare{overflow:hidden}
    .table-wrap{overflow-x:auto}
    table{width:100%; border-collapse:collapse; min-width:780px; background:#fff}
    th,td{padding:14px 12px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:#f6f9ff; color:#24314c; font-size:.95rem}
    td{color:#425066}
    .highlight{color:#0f7a66; font-weight:700}
    details.faq-item{padding:16px 18px}
    details summary{cursor:pointer; list-style:none; font-weight:600; color:#1f2d44}
    details summary::-webkit-details-marker{display:none}
    details p{margin:12px 0 0; color:var(--muted); line-height:1.75}
    .reviews{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .quote{padding:18px}
    .quote .role{color:#2a4fc0; font-size:.9rem; margin-bottom:8px}
    .quote p{margin:0; color:#415066; line-height:1.75}
    .quote .name{margin-top:12px; font-weight:700}
    .tag-cloud{padding:18px; display:flex; flex-wrap:wrap; gap:10px}
    .tag-cloud a{padding:9px 13px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#31415d}
    .timeline{padding:18px; display:grid; gap:12px}
    .timeline-item{display:grid; grid-template-columns:86px 1fr; gap:14px; padding:14px; border-radius:16px; background:#fff; border:1px solid var(--line)}
    .timeline-item b{color:var(--brand)}
    .network{padding:18px}
    .network-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:12px}
    .network-grid div{padding:14px; border-radius:14px; border:1px solid var(--line); background:#fff}
    .article-list{padding:18px}
    .article-list ul{margin:0; padding-left:18px; display:grid; gap:10px}
    .article-list a{color:#2847a8}
    .form-wrap{padding:20px}
    form{display:grid; gap:14px}
    .form-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    label{display:grid; gap:8px; font-size:.95rem; color:#26344c}
    input,select,textarea{
      width:100%; border:1px solid #d7e0ee; background:#fff; color:var(--text);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none;
      transition:border-color .2s ease, box-shadow .2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:#8fb0ff; box-shadow:0 0 0 4px rgba(31,94,255,.10)}
    textarea{min-height:120px; resize:vertical}
    .submit-row{display:flex; flex-wrap:wrap; gap:12px; align-items:center; justify-content:space-between}
    .helper{color:var(--muted); font-size:.9rem; line-height:1.6}
    .footer{
      margin-top:22px; padding:24px 0 30px; background:#101a2e; color:#e9eefc;
    }
    .footer a{color:#cfe0ff}
    .footer-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:18px}
    .footer .panel{background:rgba(255,255,255,.06); border-color:rgba(255,255,255,.09); box-shadow:none}
    .footer .panel p,.footer .panel li,.footer .panel span,.footer .panel small{color:#c8d2ea}
    .footer h2,.footer h3{margin-top:0;color:#fff}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 11px; border-radius:999px; background:rgba(255,255,255,.08)}
    .copyright{margin-top:16px; color:#b8c4df; font-size:.92rem}
    .float-tools{
      position:fixed; right:18px; bottom:18px; z-index:30; display:grid; gap:10px;
    }
    .float-tools a,.float-tools button{
      width:50px; height:50px; border-radius:16px; display:grid; place-items:center;
      border:1px solid rgba(221,229,242,.95); background:#fff; box-shadow:var(--shadow); cursor:pointer;
      color:var(--brand);
    }
    .float-tools a:hover,.float-tools button:hover{transform:translateY(-1px)}
    .reveal{opacity:0; transform:translateY(18px); transition:opacity .7s ease, transform .7s ease}
    .reveal.in-view{opacity:1; transform:none}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.reviews,.footer-grid,.flow,.network-grid{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none; width:100%; padding:12px 0 4px; justify-content:flex-start;
      }
      .nav-links.open{display:flex}
      .nav{flex-wrap:wrap}
      .hero-grid,.grid-3,.grid-4,.reviews,.footer-grid,.flow,.network-grid,.form-grid,.mini-stats{grid-template-columns:1fr}
      .section-title{flex-direction:column; align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .submit-row{flex-direction:column; align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
    }