:root{
      --bg:#f6fbf8;
      --bg2:#eef8f2;
      --card:#ffffff;
      --text:#1f2a24;
      --muted:#5d6b63;
      --line:#dfeae3;
      --green:#2ea36b;
      --green2:#70d3a0;
      --mint:#dff7ea;
      --shadow:0 14px 40px rgba(28, 64, 46, .08);
      --shadow2:0 10px 26px rgba(28, 64, 46, .12);
      --radius:20px;
      --radius2:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(112,211,160,.16), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(46,163,107,.12), transparent 24%),
        linear-gradient(180deg,var(--bg),#fff 56%, var(--bg2));
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    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;
      backdrop-filter:blur(14px);
      background:rgba(246,251,248,.82);
      border-bottom:1px solid rgba(223,234,227,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:10px;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)}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a.active{background:var(--mint);color:var(--green)}
    .menu-btn{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:12px;padding:10px 12px;font-size:14px;
    }
    .hero{
      padding:34px 0 20px;
    }
    .hero-wrap{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main{
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(240,250,244,.94)),
        linear-gradient(180deg, #fff, #f5fbf7);
      border:1px solid rgba(223,234,227,.9);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:28px;
      position:relative;
      overflow:hidden;
    }
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;background:rgba(112,211,160,.18);filter:blur(8px);
    }
    .hero-main:before{width:180px;height:180px;right:-50px;top:-40px}
    .hero-main:after{width:120px;height:120px;left:-30px;bottom:-20px}
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:var(--mint);color:var(--green);
      font-size:13px;font-weight:600;
    }
    h1{font-size:clamp(30px,5vw,52px);line-height:1.08;margin:14px 0 12px}
    .lead{font-size:16px;color:var(--muted);max-width:60ch;margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:14px;border:1px solid transparent;
      font-weight:700;transition:.25s;cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--green),#29bb72);color:#fff;box-shadow:0 12px 24px rgba(46,163,107,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 30px rgba(46,163,107,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:rgba(46,163,107,.3);color:var(--green);transform:translateY(-1px)}
    .mini-tags{display:flex;flex-wrap:wrap;gap:10px}
    .mini-tags span{
      padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
      color:var(--muted);font-size:13px;
    }
    .hero-side{
      display:grid;gap:14px;
    }
    .side-card{
      background:rgba(255,255,255,.95);
      border:1px solid rgba(223,234,227,.92);
      border-radius:24px;
      box-shadow:var(--shadow);
      padding:18px;
    }
    .side-card h3{margin:0 0 10px;font-size:18px}
    .stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .stat{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f5fbf7);
      border:1px solid var(--line);
    }
    .stat b{display:block;font-size:22px;color:var(--green);line-height:1.2}
    .stat span{font-size:13px;color:var(--muted)}
    .grid{
      display:grid;gap:18px;
      grid-template-columns:repeat(12,1fr);
    }
    section{padding:18px 0}
    .section-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(223,234,227,.92);
      border-radius:26px;
      box-shadow:var(--shadow);
      padding:24px;
    }
    .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);max-width:64ch}
    .cards{display:grid;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}
    .card{
      background:linear-gradient(180deg,#fff,#fbfdfb);
      border:1px solid var(--line);
      border-radius:22px;
      padding:18px;
      transition:.25s;
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow2)}
    .card h3{margin:0 0 8px;font-size:18px}
    .card p{margin:0;color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      background:linear-gradient(180deg,#fff,#f5fbf7);
      border:1px solid var(--line);
      border-radius:999px;padding:9px 13px;font-size:13px;color:#355446
    }
    .timeline{display:grid;gap:14px}
    .step{
      display:grid;grid-template-columns:74px 1fr;gap:14px;align-items:start;
      padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .step i{
      font-style:normal;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--green),#50c98a);
      width:58px;height:58px;border-radius:18px;display:flex;align-items:center;justify-content:center
    }
    .step h3{margin:0 0 6px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:900px}
    th,td{padding:15px 14px;border-bottom:1px solid #edf3ef;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f5fbf7;color:#234032;font-weight:700}
    tr:hover td{background:#fcfffd}
    .rating{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px
    }
    .rating .card strong{font-size:30px;color:var(--green)}
    .faq{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 16px;box-shadow:0 4px 14px rgba(28,64,46,.04)
    }
    summary{
      list-style:none;cursor:pointer;padding:16px 0;font-weight:700;display:flex;justify-content:space-between;gap:12px
    }
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted);font-size:14px}
    .testimonials{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .quote{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f8fcf9);border:1px solid var(--line)
    }
    .quote .role{font-size:12px;color:var(--green);font-weight:700;margin-bottom:10px}
    .quote p{margin:0 0 12px;color:#34433b}
    .quote span{font-size:13px;color:var(--muted)}
    .case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .case{
      border:1px solid var(--line);border-radius:22px;background:#fff;overflow:hidden
    }
    .case .content{padding:18px}
    .case h3{margin:0 0 8px}
    .case ul{margin:0;padding-left:18px;color:var(--muted)}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .article{
      border:1px solid var(--line);background:#fff;border-radius:18px;padding:18px
    }
    .article a{color:var(--text);font-weight:700}
    .article p{color:var(--muted);font-size:14px;margin:8px 0 0}
    .form-wrap{
      display:grid;grid-template-columns:1fr .9fr;gap:16px;align-items:start
    }
    form{
      display:grid;gap:12px
    }
    .field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);
      background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(46,163,107,.55);box-shadow:0 0 0 4px rgba(112,211,160,.14)}
    .contact-box{
      border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,#fff,#f7fcf9);
      padding:18px
    }
    .contact-box .ai-page-image{border-radius:18px;border:1px solid var(--line);margin-top:12px}
    footer{
      margin-top:18px;
      background:#ecf7ef;
      border-top:1px solid var(--line);
      color:#244033;
    }
    .footer-inner{padding:24px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#355446}
    .copyright{font-size:13px;color:#527164}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--green),#50c98a);
      color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 26px rgba(46,163,107,.24);
      border:none;cursor:pointer
    }
    .float-panel{
      position:fixed;right:16px;bottom:80px;z-index:61;width:min(320px, calc(100vw - 32px));
      display:none;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow2);padding:16px
    }
    .float-panel.open{display:block}
    .float-panel h3{margin:0 0 10px}
    .float-panel p{margin:0;color:var(--muted);font-size:14px}
    .float-panel .contact{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
    .float-panel .contact a{padding:10px 12px;border-radius:12px;background:var(--mint);color:var(--green);font-weight:700;font-size:13px}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.visible{opacity:1;transform:none}
    .topline{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}
    .topline a{font-size:13px;color:var(--green);font-weight:700}
    .hr{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:12px 0}
    @media (max-width: 960px){
      .hero-wrap,.form-wrap{grid-template-columns:1fr}
      .cards,.testimonials,.article-list,.case-grid,.rating,.footer-inner{grid-template-columns:1fr 1fr}
      .section-head{align-items:start;flex-direction:column}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav-links.open{
        display:flex;position:absolute;left:16px;right:16px;top:74px;padding:14px;border-radius:18px;
        background:rgba(255,255,255,.98);border:1px solid var(--line);box-shadow:var(--shadow);justify-content:flex-start
      }
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero-main,.section-card{padding:18px}
      .cards,.testimonials,.article-list,.case-grid,.rating,.footer-inner,.field-grid{grid-template-columns:1fr}
      h1{font-size:30px}
      .lead{font-size:15px}
      .step{grid-template-columns:1fr}
      .step i{width:52px;height:52px}
    }