:root{
      --bg:#f6fbfb;
      --bg2:#eef7f7;
      --card:#ffffff;
      --card2:#f8fcfc;
      --text:#12323a;
      --muted:#5f7278;
      --line:#d8e8ea;
      --primary:#0ea5a4;
      --primary2:#2f7cf6;
      --accent:#16b8a6;
      --shadow:0 18px 45px rgba(16, 64, 70, .10);
      --radius:22px;
      --radius2:16px;
      --max: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(14,165,164,.12), transparent 28%),
        radial-gradient(circle at 80% 20%, rgba(47,124,246,.10), transparent 20%),
        linear-gradient(180deg, #f9fefe 0%, var(--bg) 42%, #f7fbfc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(180%) blur(12px);
      background:rgba(249,252,252,.82);
      border-bottom:1px solid rgba(216,232,234,.8);
    }
    .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 img{width:42px; height:42px; object-fit:contain; border-radius:12px; background:#fff; box-shadow:0 6px 20px rgba(0,0,0,.06)}
    .brand strong{font-size:18px; letter-spacing:.3px}
    .brand span{display:block; font-size:12px; color:var(--muted); margin-top:2px}
    .menu-btn{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:12px; padding:10px 12px; font-size:14px;
    }
    .navlinks{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .navlinks a{font-size:14px; color:#27434a; padding:8px 10px; border-radius:999px; transition:.25s}
    .navlinks a:hover,.navlinks a:focus{background:rgba(14,165,164,.10); color:var(--primary)}
    .cta{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:none; cursor:pointer; border-radius:999px; padding:13px 18px;
      font-weight:700; transition:.25s; box-shadow:0 12px 28px rgba(14,165,164,.18);
    }
    .cta.primary{background:linear-gradient(135deg, var(--primary) 0%, var(--primary2) 100%); color:#fff}
    .cta.secondary{background:#fff; color:var(--text); border:1px solid var(--line); box-shadow:none}
    .cta:hover{transform:translateY(-2px)}
    .hero{
      padding:54px 0 26px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.2fr .8fr; gap:24px; align-items:stretch;
    }
    .hero-main, .hero-side, .panel, .section-card, .form-card, .faq-card, .review-card, .article-card{
      background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,252,252,.95));
      border:1px solid rgba(216,232,234,.88);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{padding:34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 12px; border-radius:999px;
      background:rgba(14,165,164,.10); color:#0c7f80; font-size:13px; font-weight:700;
    }
    h1{font-size:clamp(30px, 5vw, 52px); line-height:1.08; margin:18px 0 14px}
    .lead{font-size:17px; line-height:1.8; color:var(--muted); margin:0 0 22px; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-bottom:22px}
    .hero-points{
      display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:12px;
    }
    .mini{
      padding:14px 14px 13px; border-radius:18px; background:linear-gradient(180deg, #fff, #f7fbfb);
      border:1px solid var(--line);
    }
    .mini b{display:block; font-size:18px; margin-bottom:4px}
    .mini span{font-size:13px; color:var(--muted); line-height:1.5}
    .hero-side{padding:22px; display:grid; gap:14px}
    .side-top{
      padding:18px; border-radius:18px; background:linear-gradient(135deg, rgba(14,165,164,.10), rgba(47,124,246,.08));
      border:1px solid rgba(14,165,164,.15)
    }
    .side-top h2{font-size:20px; margin:0 0 8px}
    .side-top p{margin:0; color:var(--muted); line-height:1.7; font-size:14px}
    .side-list{display:grid; gap:10px}
    .pill{display:flex; justify-content:space-between; gap:10px; padding:12px 14px; border-radius:14px; background:#fff; border:1px solid var(--line); font-size:14px}
    .pill strong{color:#11343b}
    .section{padding:18px 0}
    .section-head{display:flex; justify-content:space-between; gap:16px; align-items:end; margin-bottom:16px}
    .section-head h2{font-size:28px; margin:0}
    .section-head p{margin:0; color:var(--muted); line-height:1.7; max-width:68ch}
    .grid-4{display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:16px}
    .grid-3{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .card{padding:22px; border-radius:20px; background:linear-gradient(180deg, #fff, #f8fcfc); border:1px solid var(--line); box-shadow:0 10px 24px rgba(14,72,78,.06); transition:.25s}
    .card:hover{transform:translateY(-4px); box-shadow:0 18px 34px rgba(14,72,78,.10)}
    .metric b{display:block; font-size:28px; margin-bottom:4px}
    .metric span{color:var(--muted); font-size:14px; line-height:1.6}
    .icon{
      width:48px; height:48px; border-radius:14px; display:grid; place-items:center;
      background:linear-gradient(135deg, rgba(14,165,164,.14), rgba(47,124,246,.12));
      color:var(--primary);
      font-weight:800; margin-bottom:14px;
    }
    .card h3{margin:0 0 10px; font-size:18px}
    .card p{margin:0; color:var(--muted); line-height:1.75; font-size:14px}
    .chips{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .chip{padding:8px 11px; border-radius:999px; background:#f3fbfb; border:1px solid var(--line); color:#24515a; font-size:13px}
    .split{
      display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:stretch;
    }
    .table-wrap{overflow:auto; border-radius:20px; border:1px solid var(--line); background:#fff}
    table{width:100%; border-collapse:collapse; min-width:840px}
    th,td{padding:16px 14px; border-bottom:1px solid #e8f1f2; text-align:left; vertical-align:top; font-size:14px}
    th{background:#f6fbfb; color:#17383f; font-weight:700}
    td{color:#38545a; line-height:1.7}
    .highlight{color:#0c7f80; font-weight:700}
    .timeline{display:grid; gap:14px}
    .step{display:grid; grid-template-columns:62px 1fr; gap:14px; align-items:start; padding:18px; border-radius:18px; background:#fff; border:1px solid var(--line)}
    .step-num{
      width:54px; height:54px; border-radius:16px; display:grid; place-items:center; color:#fff; font-weight:800;
      background:linear-gradient(135deg, var(--primary), var(--primary2));
      box-shadow:0 12px 24px rgba(14,165,164,.22);
    }
    .step h3{margin:0 0 8px; font-size:18px}
    .step p{margin:0; color:var(--muted); line-height:1.75; font-size:14px}
    .gallery{display:grid; grid-template-columns:1.2fr .8fr; gap:16px}
    .gallery .stack{display:grid; gap:16px}
    .gallery figure{margin:0; overflow:hidden; border-radius:20px; border:1px solid var(--line); background:#fff}
    .gallery figcaption{padding:12px 14px; font-size:14px; color:#38545a; background:#fff}
    .gallery img{width:100%; height:auto; display:block}
    .reviews .review-card{padding:20px}
    .review-top{display:flex; justify-content:space-between; gap:12px; align-items:center; margin-bottom:14px}
    .avatar{width:44px; height:44px; border-radius:14px; display:grid; place-items:center; font-weight:800; color:#fff; background:linear-gradient(135deg, var(--primary), var(--primary2))}
    .review-meta{display:flex; align-items:center; gap:12px}
    .stars{color:#ffb400; letter-spacing:2px; font-size:15px}
    .review-card p{margin:0; color:var(--muted); line-height:1.8; font-size:14px}
    .faq details{
      background:#fff; border:1px solid var(--line); border-radius:16px; padding:0 16px; box-shadow:0 8px 18px rgba(14,72,78,.05)
    }
    .faq summary{
      list-style:none; cursor:pointer; padding:16px 0; font-weight:700; color:#16383f;
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{padding:0 0 16px; color:var(--muted); line-height:1.8; font-size:14px}
    .articles{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .article-card{padding:20px}
    .article-card .tag{display:inline-block; padding:7px 10px; border-radius:999px; background:rgba(14,165,164,.10); color:#0c7f80; font-size:12px; font-weight:700; margin-bottom:12px}
    .article-card h3{margin:0 0 8px; font-size:18px}
    .article-card p{margin:0 0 14px; color:var(--muted); line-height:1.75; font-size:14px}
    .article-card a{color:var(--primary); font-weight:700; font-size:14px}
    .form-card{padding:24px}
    .form-grid{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:14px}
    .field{display:grid; gap:8px}
    .field label{font-size:14px; font-weight:700; color:#17373d}
    .field input,.field select,.field textarea{
      width:100%; border:1px solid var(--line); border-radius:14px; padding:13px 14px; font:inherit;
      background:#fff; color:var(--text); outline:none;
    }
    .field textarea{min-height:122px; resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:rgba(14,165,164,.55); box-shadow:0 0 0 4px rgba(14,165,164,.10)}
    .full{grid-column:1 / -1}
    .footer{
      margin-top:24px; padding:28px 0 26px; border-top:1px solid rgba(216,232,234,.9); background:#f7fcfc; color:#1b3b43
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr .8fr; gap:16px; align-items:start}
    .footer a{color:#145f6a}
    .footer .small{font-size:13px; color:#4e666c; line-height:1.8}
    .footer h3{margin:0 0 12px; font-size:18px}
    .footer ul{list-style:none; padding:0; margin:0; display:grid; gap:10px}
    .footer li{font-size:14px; color:#35545b}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:13px 14px; border-radius:999px; background:linear-gradient(135deg, var(--primary), var(--primary2));
      color:#fff; box-shadow:0 14px 30px rgba(14,165,164,.22); font-weight:700; border:none;
    }
    .backtop{background:#fff; color:var(--text); border:1px solid var(--line); box-shadow:0 10px 24px rgba(0,0,0,.08)}
    .mobile-links{display:none}
    .fade-in{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease}
    .fade-in.show{opacity:1; transform:none}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag-cloud span{padding:8px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#31545b; font-size:13px}
    .pricing{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .price{
      padding:22px; border-radius:20px; border:1px solid var(--line); background:#fff; position:relative;
    }
    .price.reco{background:linear-gradient(180deg, rgba(14,165,164,.08), rgba(255,255,255,.98)); border-color:rgba(14,165,164,.22)}
    .price h3{margin:0 0 8px}
    .price .num{font-size:28px; font-weight:800; margin:8px 0 12px}
    .price ul{margin:0; padding-left:18px; color:var(--muted); line-height:1.8; font-size:14px}
    @media (max-width: 980px){
      .hero-grid,.split,.gallery,.footer-grid,.grid-4,.grid-3,.articles,.pricing{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .navlinks{display:none}
      .menu-btn{display:inline-flex}
      .mobile-links{
        display:none; padding:0 0 16px;
      }
      .mobile-links.open{display:block}
      .mobile-links .navlinks{display:grid; gap:8px; justify-content:start}
      .mobile-links .navlinks a{padding:10px 12px; background:#fff; border:1px solid var(--line)}
      .section-head{flex-direction:column; align-items:start}
    }
    @media (max-width: 640px){
      .hero{padding-top:28px}
      .hero-main{padding:24px}
      .hero-side,.card,.form-card,.article-card,.price,.review-card{border-radius:18px}
      .container{width:min(var(--max), calc(100% - 20px))}
      .step{grid-template-columns:1fr}
    }