:root{
      --bg:#f4f8fb;
      --panel:#ffffff;
      --panel-2:#eef7fb;
      --text:#143042;
      --muted:#5d7483;
      --line:#d8e6ee;
      --brand:#0ea5b7;
      --brand-2:#2b7fff;
      --brand-3:#14b8a6;
      --accent:#38bdf8;
      --shadow:0 18px 40px rgba(16, 56, 84, .09);
      --shadow-2:0 10px 24px rgba(11, 78, 113, .12);
      --radius:20px;
      --container: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(1100px 500px at 12% 0%, rgba(14,165,183,.12), transparent 55%),
        radial-gradient(900px 450px at 92% 8%, rgba(43,127,255,.10), transparent 50%),
        linear-gradient(180deg, #f8fcff 0%, #f2f8fb 52%, #f7fbfd 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:100;
      backdrop-filter:blur(16px);
      background:rgba(247,251,253,.84);
      border-bottom:1px solid rgba(216,230,238,.8);
    }
    .topbar{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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 18px rgba(17,52,73,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1.02rem;letter-spacing:.5px}
    .brand-text span{display:block;font-size:.86rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:.95rem;color:#2b4657;padding:8px 10px;border-radius:10px;transition:.2s ease}
    .nav a:hover,.nav a.active{background:rgba(14,165,183,.09);color:#0b5e6a}
    .hero{
      padding:42px 0 26px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:22px;
      align-items:stretch;
    }
    .hero-main,.hero-side,.card,.section-card,.faq-item,.review-card,.news-card,.step-card,.price-card,.compare-card,.form-card,.timeline-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(216,230,238,.9);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .hero-main:before,.hero-main:after{
      content:"";
      position:absolute;border-radius:50%;
      background:radial-gradient(circle, rgba(14,165,183,.16), transparent 62%);
      pointer-events:none;
    }
    .hero-main:before{width:260px;height:260px;right:-90px;top:-90px}
    .hero-main:after{width:180px;height:180px;left:-70px;bottom:-70px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:linear-gradient(90deg, rgba(14,165,183,.12), rgba(43,127,255,.10));
      color:#0d6575;font-size:.88rem;font-weight:600;
      border:1px solid rgba(14,165,183,.16);
    }
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.7rem);line-height:1.12;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:1.03rem;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:14px;font-weight:700;
      border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand-2));color:#fff}
    .btn-secondary{background:#fff;color:#16394c;border-color:var(--line)}
    .hero-mini{
      display:grid;gap:14px;
    }
    .hero-side{padding:22px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .metric{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#f7fcfe,#eef9fc);
      border:1px solid #d9ebf2;
    }
    .metric strong{display:block;font-size:1.35rem;margin-bottom:4px}
    .metric span{display:block;color:var(--muted);font-size:.92rem}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #dbeaf0;color:#345364;font-size:.9rem
    }
    .section{padding:18px 0 10px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:1.6rem}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .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{padding:22px}
    .card h3,.step-card h3,.news-card h3,.review-card h3,.compare-card h3,.form-card h3,.timeline-card h3{margin:0 0 10px;font-size:1.1rem}
    .card p,.step-card p,.news-card p,.review-card p,.timeline-card p{margin:0;color:var(--muted)}
    .icon-badge{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(14,165,183,.16), rgba(43,127,255,.12));
      color:#0b6f7d;font-weight:800;margin-bottom:14px;
    }
    .service-list{display:grid;gap:12px;margin-top:14px}
    .service-list div{display:flex;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:14px;background:#f8fbfd;border:1px solid #deecf3}
    .service-list span:last-child{color:#496476}
    .image-strip{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .image-strip img,.case-image img{width:100%;border-radius:18px;border:1px solid #dbe8ef;box-shadow:0 10px 28px rgba(16,56,84,.08);object-fit:cover}
    .image-strip img{aspect-ratio:16/10}
    .subtle-note{font-size:.92rem;color:#5f7484}
    .timeline{display:grid;gap:14px}
    .timeline-card{padding:18px 20px;position:relative}
    .timeline-card:before{
      content:"";position:absolute;left:18px;top:22px;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 0 0 5px rgba(14,165,183,.12);
    }
    .timeline-card{padding-left:44px}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid #d9e8ef;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 14px;border-bottom:1px solid #e6eff4;text-align:left;vertical-align:top}
    th{background:#f4fbfe;color:#17384a;font-size:.95rem}
    td{color:#415868}
    .rating{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap
    }
    .stars{color:#f5b301;font-size:1.25rem;letter-spacing:2px}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card{padding:20px}
    .review-meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.92rem;margin-top:14px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;text-align:left;border:0;background:transparent;padding:18px 20px;font:inherit;color:var(--text);
      display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer
    }
    .faq-q strong{font-size:1rem}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:18px}
    .faq-a p{margin:0;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .form-card{padding:22px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .field{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
    label{font-weight:600;font-size:.95rem}
    input,select,textarea{
      width:100%;padding:12px 14px;border-radius:14px;border:1px solid #cfe0e8;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:border-color .2s ease,box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#69bfcf;box-shadow:0 0 0 4px rgba(14,165,183,.10)}
    textarea{min-height:130px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:6px}
    .contact-cards{display:grid;gap:14px}
    .contact-box{
      padding:18px 20px;border-radius:18px;background:linear-gradient(180deg,#f8fcfe,#eef8fb);border:1px solid #daeaf0
    }
    .contact-box strong{display:block;margin-bottom:6px}
    .contact-box a{color:#0b7285;font-weight:700}
    .footer{
      margin-top:22px;padding:22px 0 30px;border-top:1px solid #d8e6ee;color:#455b69;background:rgba(255,255,255,.8)
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer small,.footer p,.footer a{color:#4a6070}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:#f4fafc;border:1px solid #dbe8ef}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:120;display:grid;gap:10px
    }
    .floating a,.floating button{
      display:inline-flex;align-items:center;justify-content:center;
      width:52px;height:52px;border-radius:16px;border:1px solid rgba(215,230,239,.95);
      background:#fff;box-shadow:var(--shadow);color:#0e6071;cursor:pointer
    }
    .floating a:hover,.floating button:hover{transform:translateY(-2px)}
    .backtop{display:none}
    .backtop.show{display:inline-flex}
    .floating-card{
      position:fixed;left:16px;bottom:16px;z-index:110;width:min(320px, calc(100vw - 32px));
      padding:16px;border-radius:20px;background:#fff;border:1px solid #d9e7ee;box-shadow:var(--shadow);display:none
    }
    .floating-card.show{display:block}
    .floating-card img{width:100%;border-radius:14px}
    .floating-card .close{
      position:absolute;right:10px;top:10px;width:28px;height:28px;border-radius:50%;border:0;background:#eef7fb;color:#335466
    }
    .muted{color:var(--muted)}
    .anchor-list{display:flex;flex-wrap:wrap;gap:8px}
    .anchor-list a{padding:7px 10px;border-radius:10px;background:#fff;border:1px solid #dbe8ef;color:#315062;font-size:.9rem}
    .case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .case-image{display:grid;gap:14px}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{padding:20px;background:linear-gradient(180deg,#fff,#f7fcfe)}
    .price-card ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:rgba(14,165,183,.10);color:#0a6675;font-size:.86rem;font-weight:700
    }
    .scroll-reveal{opacity:0;transform:translateY(14px);transition:opacity .45s ease,transform .45s ease}
    .scroll-reveal.in-view{opacity:1;transform:translateY(0)}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.review-grid,.form-grid,.case-grid,.price-grid,.footer-grid{grid-template-columns:1fr}
      .nav-toggle{display:inline-flex}
      .nav{
        position:absolute;left:0;right:0;top:100%;
        display:none;flex-direction:column;align-items:stretch;gap:6px;padding:12px 16px 16px;
        background:rgba(247,251,253,.98);border-bottom:1px solid var(--line);box-shadow:0 18px 24px rgba(13,54,74,.08)
      }
      .nav.open{display:flex}
      .nav a{padding:11px 12px;background:#fff;border:1px solid #e0edf3}
      .hero-main{padding:28px 22px}
      .hero{padding-top:28px}
      .metric-grid{grid-template-columns:1fr 1fr}
      .form-row{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .container{width:min(100% - 24px, var(--container))}
      .topbar{padding:12px 0}
      .brand img{width:40px;height:40px}
      h1{font-size:2rem}
      .metric-grid{grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .section-head{flex-direction:column;align-items:flex-start}
      .floating-card{left:12px;right:12px;width:auto}
    }