:root{
      --bg:#f4f8fb;
      --panel:#ffffff;
      --panel2:#eef7f8;
      --text:#123042;
      --muted:#5f7482;
      --line:#d6e4ea;
      --primary:#0a9fb3;
      --primary2:#1d6fff;
      --accent:#14c4a6;
      --shadow:0 14px 34px rgba(16,64,84,.10);
      --radius:20px;
      --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;background:linear-gradient(180deg,#eff9fb 0%,#f7fbfd 32%,#f4f8fb 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    .topbar,.hero,.section,.footer{position:relative}
    .topbar{background:rgba(255,255,255,.78);backdrop-filter:blur(10px);border-bottom:1px solid rgba(214,228,234,.7);position:sticky;top:0;z-index:30}
    .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:10px;background:#fff;padding:5px;border:1px solid var(--line)}
    .brand h2{font-size:18px;margin:0;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#2b4a58;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a.active{background:#e6f7fa;color:#0b6a78}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
    .btn-ghost{background:#fff;color:#125064;border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:54px 0 28px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch}
    .hero-main{background:linear-gradient(135deg,#062f3f 0%,#0d6171 52%,#127f8b 100%);border-radius:28px;color:#fff;padding:40px;position:relative;overflow:hidden;box-shadow:var(--shadow);min-height:420px}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.10);filter:blur(2px)}
    .hero-main:before{width:220px;height:220px;right:-70px;top:-40px}
    .hero-main:after{width:160px;height:160px;left:-50px;bottom:-30px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);padding:8px 12px;border-radius:999px;font-size:13px}
    h1{margin:18px 0 12px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero p{margin:0;color:rgba(255,255,255,.86);font-size:16px;line-height:1.8;max-width:700px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
    .stat{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:16px}
    .stat strong{display:block;font-size:26px;line-height:1;color:#fff}
    .stat span{display:block;font-size:13px;color:rgba(255,255,255,.82);margin-top:8px}
    .hero-side{display:grid;gap:16px}
    .side-card{background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:22px}
    .side-card h3{margin:0 0 12px;font-size:18px}
    .mini-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:14px;line-height:1.7}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:7px;flex:0 0 auto}
    .section{padding:26px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:700px;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;transition:.25s}
    .card:hover{transform:translateY(-4px)}
    .metric strong{font-size:28px;display:block}
    .metric span{color:var(--muted);font-size:14px;display:block;margin-top:8px;line-height:1.7}
    .icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#d9f7fb,#e9f1ff);color:#166c7b;font-weight:800;margin-bottom:14px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75;font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{background:#f1fbfc;border:1px solid #d8eff2;color:#0d6373;padding:9px 13px;border-radius:999px;font-size:13px}
    .timeline{display:grid;gap:12px}
    .step{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .step b{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
    th{background:#f6fbfc;color:#103747}
    .highlight{color:#0b7684;font-weight:700}
    details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow)}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"＋";float:right;color:var(--primary);font-weight:800}
    details[open] summary::after{content:"－"}
    .quote{display:grid;gap:12px}
    .quote-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}
    .quote-card strong{display:block;margin-bottom:8px}
    .quote-card span{color:var(--muted);font-size:13px}
    .price{display:grid;gap:12px}
    .price-item{display:flex;justify-content:space-between;gap:12px;padding:16px 18px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .price-item b{display:block}
    .price-item em{font-style:normal;color:var(--muted);font-size:13px}
    .form{background:linear-gradient(180deg,#ffffff 0%,#f7fcfd 100%);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#214150}
    input,select,textarea{width:100%;border:1px solid #cfe0e7;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(10,159,179,.10)}
    textarea{min-height:130px;resize:vertical}
    .footer{margin-top:26px;padding:26px 0 20px;background:#0a2330;color:#d6e8ee}
    .footer .section-head h2,.footer .section-head p,.footer a{color:#d6e8ee}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .7fr;gap:18px}
    .footer-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{background:rgba(255,255,255,.08);padding:8px 12px;border-radius:999px;font-size:13px}
    .subfooter{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;color:#c6d9df;font-size:13px}
    .float-tools{position:fixed;right:16px;bottom:18px;z-index:40;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:var(--shadow);border:0;cursor:pointer}
    .chat-box{position:fixed;right:16px;bottom:84px;z-index:40;width:min(320px,calc(100vw - 32px));background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px;display:none}
    .chat-box.open{display:block}
    .chat-box h3{margin:0 0 10px;font-size:16px}
    .chat-box p{margin:0 0 12px;color:var(--muted);font-size:14px;line-height:1.6}
    .chat-box img{width:100%;border-radius:14px;border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-panel{display:none}
    .anchor-title{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#0d7180;background:#e8f8fa;border:1px solid #d2eef1;padding:7px 12px;border-radius:999px;margin-bottom:12px}
    @media (max-width: 1080px){
      .hero-grid,.footer-grid,.grid-4{grid-template-columns:1fr 1fr}
      .grid-3{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel a{display:block;padding:10px 0;border-top:1px solid rgba(214,228,234,.8);color:#244756}
      .hero{padding-top:24px}
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px;min-height:auto}
      .hero-stats{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .btn{width:100%}
      .nav{padding:12px 0}
      .hero-actions{flex-direction:column}
      .float-tools{right:12px;bottom:12px}
      .chat-box{right:12px;bottom:78px}
    }