:root{
      --bg:#f7fbfb;
      --surface:#ffffff;
      --surface-2:#eef7f7;
      --text:#17313a;
      --muted:#5e757f;
      --line:#d8e5e7;
      --brand:#19a6b7;
      --brand-2:#0f7ea0;
      --accent:#19c3a8;
      --shadow:0 14px 40px rgba(14, 78, 92, .10);
      --radius:20px;
      --container: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(25,166,183,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(25,195,168,.10), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 36%, #f6fbfc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(247,251,251,.82);
      border-bottom:1px solid rgba(216,229,231,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      min-height:76px;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand h1{font-size:18px; line-height:1.1; margin:0; white-space:nowrap}
    .brand span{display:block; font-size:12px; color:var(--muted); margin-top:4px; white-space:nowrap}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px;font-weight:700}
    nav ul{list-style:none; display:flex; align-items:center; gap:18px; padding:0; margin:0; flex-wrap:wrap; justify-content:flex-end}
    nav a{color:var(--text); font-size:14px; font-weight:600}
    .home-link, .cta{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border-radius:999px; padding:12px 18px; font-weight:700; transition:.25s ease;
    }
    .home-link{background:linear-gradient(135deg, rgba(25,166,183,.10), rgba(25,195,168,.14)); border:1px solid rgba(25,166,183,.22); color:var(--brand-2)}
    .cta{background:linear-gradient(135deg, var(--brand), var(--accent)); color:#fff; box-shadow:0 12px 28px rgba(25,166,183,.24)}
    .cta:hover,.home-link:hover,.card:hover,.review:hover,.faq-item:hover,.article:hover{transform:translateY(-2px)}
    main{display:block}
    section{padding:72px 0}
    .hero{padding:30px 0 54px}
    .hero-grid{
      display:grid; grid-template-columns:1.35fr .95fr; gap:24px; align-items:stretch
    }
    .hero-panel,.glass{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.82));
      border:1px solid rgba(216,229,231,.9);
      border-radius:28px;
      box-shadow:var(--shadow);
    }
    .hero-panel{padding:34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      font-size:13px; color:var(--brand-2); font-weight:800;
      background:rgba(25,166,183,.09); border:1px solid rgba(25,166,183,.18);
      padding:8px 12px; border-radius:999px;
    }
    h2,h3,p{margin-top:0}
    .hero h1{
      font-size:clamp(30px, 4vw, 56px); line-height:1.05; margin:16px 0 16px; letter-spacing:-.02em
    }
    .hero p{font-size:16px; color:var(--muted); line-height:1.8; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0}
    .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); font-weight:700
    }
    .hero-note{display:flex; flex-wrap:wrap; gap:10px; margin-top:16px}
    .tag{
      padding:8px 12px; border-radius:999px; background:var(--surface-2); border:1px solid var(--line);
      color:var(--text); font-size:13px; font-weight:600
    }
    .hero-side{padding:24px; display:grid; gap:16px}
    .metric-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    .metric{
      background:#fff; border:1px solid var(--line); border-radius:18px; padding:18px;
    }
    .metric strong{display:block; font-size:24px; line-height:1; margin-bottom:8px; color:#0f4350}
    .metric span{font-size:13px; color:var(--muted); line-height:1.55}
    .mini-panel{background:linear-gradient(135deg, rgba(25,166,183,.10), rgba(25,195,168,.08)); border:1px solid rgba(25,166,183,.16); border-radius:22px; padding:18px}
    .mini-panel ul{margin:10px 0 0; padding-left:18px; color:var(--text); line-height:1.8}
    .section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:24px}
    .section-head p{max-width:70ch; color:var(--muted); line-height:1.8; margin-bottom:0}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
    .grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:18px}
    .card{
      background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
      box-shadow:0 10px 26px rgba(16, 54, 63, .06); padding:22px; transition:.25s ease
    }
    .card h3{margin:0 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.8}
    .list{padding-left:18px; margin:12px 0 0}
    .workflow{counter-reset:step}
    .step{
      position:relative; padding-left:58px
    }
    .step::before{
      counter-increment:step; content:counter(step, decimal-leading-zero);
      position:absolute; left:0; top:0; width:38px; height:38px; border-radius:14px;
      background:linear-gradient(135deg, var(--brand), var(--accent)); color:#fff;
      display:grid; place-items:center; font-weight:800
    }
    .table-wrap{overflow:auto; border:1px solid var(--line); border-radius:22px; background:#fff; box-shadow:var(--shadow)}
    table{width:100%; border-collapse:collapse; min-width:860px}
    th,td{padding:16px 18px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:linear-gradient(180deg, #f3fbfb, #eef8f8); color:#103844}
    tr:last-child td{border-bottom:none}
    .badge{display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:700; color:#0f5c67; background:#e6faf7; border:1px solid #c8f0ea; padding:6px 10px; border-radius:999px}
    .matrix{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .matrix .card{padding:18px}
    .pricing{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
    .price{
      position:relative; overflow:hidden
    }
    .price strong{font-size:28px; color:#0f4350}
    .price .badge{margin-bottom:10px}
    .form{
      display:grid; grid-template-columns:repeat(2,1fr); gap:14px
    }
    .form .full{grid-column:1/-1}
    input,select,textarea{
      width:100%; border:1px solid var(--line); border-radius:14px; background:#fff;
      padding:14px 15px; font:inherit; color:var(--text); outline:none
    }
    textarea{min-height:130px; resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(25,166,183,.65); box-shadow:0 0 0 4px rgba(25,166,183,.10)}
    .faq-item{
      border:1px solid var(--line); border-radius:18px; background:#fff; overflow:hidden; transition:.25s ease
    }
    .faq-q{
      width:100%; background:none; border:0; padding:18px 20px; text-align:left;
      display:flex; justify-content:space-between; gap:16px; font:inherit; color:var(--text); font-weight:700
    }
    .faq-a{padding:0 20px 18px; color:var(--muted); line-height:1.8; display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .faq-q{color:var(--brand-2)}
    .reviews{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
    .review cite{display:block; margin-top:14px; color:#0f4350; font-style:normal; font-weight:700}
    .article-list{display:grid; grid-template-columns:repeat(2,1fr); gap:16px}
    .article{padding:18px; border:1px solid var(--line); border-radius:18px; background:#fff; transition:.25s ease}
    .article small{color:var(--muted)}
    .cloud{display:flex; flex-wrap:wrap; gap:10px}
    .cloud a{padding:10px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:var(--text); font-size:13px}
    .timeline{display:grid; gap:14px}
    .timeline .card{position:relative; padding-left:22px}
    .timeline .card::before{
      content:""; position:absolute; left:0; top:22px; bottom:22px; width:4px; border-radius:99px; background:linear-gradient(180deg, var(--brand), var(--accent))
    }
    footer{
      padding:28px 0 34px; background:#eaf5f6; border-top:1px solid var(--line); color:var(--text)
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:22px; align-items:start}
    .foot-links{display:flex; flex-wrap:wrap; gap:10px}
    .foot-links a{color:var(--brand-2)}
    .floating{
      position:fixed; right:16px; bottom:18px; z-index:60; display:grid; gap:10px
    }
    .float-btn{
      width:52px; height:52px; border-radius:50%; border:0; color:#fff; background:linear-gradient(135deg, var(--brand), var(--accent));
      box-shadow:0 14px 26px rgba(25,166,183,.28); display:grid; place-items:center; font-size:18px; cursor:pointer
    }
    .kefu{
      position:fixed; left:16px; bottom:18px; z-index:60; width:min(300px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow); overflow:hidden
    }
    .kefu header{position:static; background:linear-gradient(135deg, rgba(25,166,183,.10), rgba(25,195,168,.10)); border-bottom:1px solid var(--line)}
    .kefu-inner{padding:14px; display:grid; grid-template-columns:88px 1fr; gap:12px; align-items:center}
    .kefu .close{justify-self:end;border:0;background:none;color:var(--muted);font-size:18px;cursor:pointer}
    .hidden{display:none}
    .reveal{opacity:0; transform:translateY(14px); transition:.55s ease}
    .reveal.visible{opacity:1; transform:none}
    .mono{font-variant-numeric:tabular-nums}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.reviews,.pricing,.footer-grid,.article-list,.matrix{grid-template-columns:1fr}
      nav{display:none}
      nav.open{display:block; position:absolute; left:16px; right:16px; top:76px; background:#fff; border:1px solid var(--line); border-radius:20px; padding:14px; box-shadow:var(--shadow)}
      nav ul{justify-content:flex-start; gap:12px}
      .menu-btn{display:inline-flex}
      .nav{position:relative}
      .form{grid-template-columns:1fr}
      .hero-panel{padding:24px}
      section{padding:56px 0}
      .section-head{flex-direction:column; align-items:flex-start}
      .kefu{left:12px; right:12px; width:auto}
    }