:root{
      --bg:#f6f8fc;--panel:#ffffff;--panel2:#f0f5ff;--text:#172033;--muted:#5f6b84;--line:#dbe4f0;
      --brand:#2c6cff;--brand2:#00c2ff;--brand3:#6f7cff;--accent:#ffb34d;--shadow:0 18px 50px rgba(34,64,128,.10);
      --radius:22px;--radius2:16px;--container:1180px;
    }
    *{box-sizing:border-box} html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:
      radial-gradient(circle at 10% 0%, rgba(44,108,255,.12), transparent 28%),
      radial-gradient(circle at 90% 10%, rgba(0,194,255,.10), transparent 22%),
      linear-gradient(180deg,#fbfcff 0%, #f3f7fd 100%);}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(251,252,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,228,240,.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:12px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .menu{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end;align-items:center}
    .menu a,.menu button{border:1px solid transparent;background:transparent;color:var(--text);padding:9px 12px;border-radius:999px;font-size:14px;cursor:pointer}
    .menu a:hover,.menu button:hover{background:#eef4ff;border-color:#dce7ff}
    .cta{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff !important;box-shadow:0 10px 24px rgba(44,108,255,.22)}
    .mobile-toggle{display:none}
    main{overflow:hidden}
    section{padding:34px 0}
    .hero{padding:30px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:22px;align-items:stretch}
    .hero-card,.panel{background:rgba(255,255,255,.88);border:1px solid rgba(219,228,240,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:28px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none}
    .hero-card:before{width:220px;height:220px;background:rgba(44,108,255,.10);right:-60px;top:-60px}
    .hero-card:after{width:180px;height:180px;background:rgba(0,194,255,.10);right:80px;bottom:-70px}
    h1{margin:14px 0 12px;font-size:clamp(30px,5vw,56px);line-height:1.05;letter-spacing:-.03em}
    .lead{color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:14px;border:1px solid var(--line);font-weight:700;transition:.25s ease}
    .btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-color:transparent}
    .btn.secondary{background:#fff;color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(22,33,55,.10)}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .badge{padding:8px 12px;border-radius:999px;background:#f1f6ff;color:#24437e;border:1px solid #dce8ff;font-size:13px}
    .hero-side{display:grid;gap:14px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .metric{padding:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line);border-radius:18px}
    .metric b{display:block;font-size:24px;margin-bottom:8px}
    .metric span{color:var(--muted);font-size:13px;line-height:1.6}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:18px}
    .section-title h2{margin:0;font-size:clamp(24px,3vw,36px)}
    .section-title p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .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{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 10px 30px rgba(34,64,128,.06);transition:.25s ease}
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(34,64,128,.10)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li,.table-wrap{color:var(--muted);line-height:1.75}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(44,108,255,.12),rgba(0,194,255,.12));color:var(--brand);font-weight:800;margin-bottom:12px}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .list{padding-left:18px;margin:10px 0 0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f7faff);border:1px solid var(--line)}
    .step b{display:block;margin-bottom:8px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 12px;border-bottom:1px solid #edf2f8;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#20314f;font-size:14px}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#ffb100;letter-spacing:2px;font-size:18px}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{padding:20px;border-radius:20px;background:linear-gradient(180deg,#fff,#f7faff);border:1px solid var(--line)}
    .quote p{margin:0 0 12px;color:var(--text);line-height:1.8}
    .quote span{color:var(--muted);font-size:13px}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .article small{color:var(--brand);font-weight:700}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #d8e2ef;border-radius:14px;background:#fff;color:var(--text);font:inherit}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    footer{padding:24px 0 30px;border-top:1px solid var(--line);background:#f5f8fd;color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:var(--brand)}
    .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 12px 28px rgba(44,108,255,.28)}
    .kefu{position:fixed;left:16px;bottom:16px;z-index:60;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow);width:112px}
    .kefu img{border-radius:12px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #dce7f6;color:#36507a;font-size:13px}
    .mini-note{color:var(--muted);font-size:13px;line-height:1.7}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:90px 1fr;gap:14px;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .timeline-item b{color:var(--brand)}
    .media-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .media-row img{border-radius:18px;border:1px solid var(--line);background:#fff}
    .anchor-pad{scroll-margin-top:92px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.steps,.reviews,.footer-grid,.two-col,.article-list,.media-row,.grid-4,.grid-3{grid-template-columns:1fr}
      .menu{display:none}
      .mobile-toggle{display:inline-flex}
      .menu.open{display:flex;position:absolute;left:16px;right:16px;top:68px;background:#fff;padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);z-index:20}
      .form-grid{grid-template-columns:1fr}
      .hero{padding-top:18px}
      .metric-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-card{padding:22px}
      .metric-grid{grid-template-columns:1fr}
      .section-title{flex-direction:column;align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .kefu{width:96px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
    .reveal.show{opacity:1;transform:none}