:root{
      --bg:#f4fbfc;
      --surface:#ffffff;
      --surface-2:#eff9fb;
      --text:#17313a;
      --muted:#5b7480;
      --line:#d7e7eb;
      --primary:#0ea5b7;
      --primary-2:#2dd4bf;
      --accent:#2563eb;
      --shadow:0 18px 45px rgba(15, 118, 110, 0.10);
      --radius:22px;
      --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;background:linear-gradient(180deg,#f6fcfd 0%,#ffffff 24%,#f4fbfc 100%);color:var(--text);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:60;background:rgba(246,252,253,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,231,235,.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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(15,118,110,.08)}
    .brand strong{display:block;font-size:1.02rem}
    .brand span{display:block;font-size:.84rem;color:var(--muted)}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:.94rem;color:#2a4b55;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav a:hover,.nav a:focus-visible{background:#e4f8fb;color:#0e5f6b;outline:none}
    .cta-link{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff!important;padding:10px 16px;border-radius:999px;box-shadow:0 10px 24px rgba(14,165,183,.22)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .hero{padding:54px 0 18px;position:relative;overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(45,212,191,.18),rgba(45,212,191,0) 62%)}
    .hero:before{width:320px;height:320px;right:-110px;top:-110px}
    .hero:after{width:260px;height:260px;left:-120px;bottom:-120px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:stretch;position:relative}
    .hero-copy,.hero-panel,.card,.faq-item,.form-box,.note-box,.review,.case,.article,.timeline li,.price-box,.compare-box{background:var(--surface);border:1px solid rgba(215,231,235,.9);box-shadow:var(--shadow)}
    .hero-copy{border-radius:28px;padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#e7fbfb;color:#0d6b76;font-size:.85rem;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(2rem,5vw,3.6rem);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:#35535d;font-size:1.02rem;max-width:58ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:13px 18px;font-weight:700;border:1px solid transparent;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 14px 28px rgba(37,99,235,.16)}
    .btn-secondary{background:#fff;color:#17414a;border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(15,118,110,.12)}
    .hero-panel{border-radius:28px;padding:24px;background:linear-gradient(180deg,#ffffff 0%,#f2fbfc 100%)}
    .metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff 0%,#effafb 100%);border:1px solid #ddedf0}
    .metric b{display:block;font-size:1.45rem;color:#0d5d69}
    .metric span{display:block;color:var(--muted);font-size:.9rem}
    section{padding:26px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(1.45rem,2.6vw,2.15rem)}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{border-radius:22px;padding:20px}
    .card h3{margin:0 0 8px;font-size:1.06rem}
    .card p{margin:0;color:var(--muted)}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#dcfdf8,#dbeafe);color:#0b7285;font-weight:800;margin-bottom:12px}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#eefafa;border:1px solid #d8eef0;color:#24515b;font-size:.88rem}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .timeline{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .timeline li{border-radius:18px;padding:16px 16px 16px 18px;display:flex;gap:14px;align-items:flex-start}
    .stepno{flex:0 0 auto;width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800}
    .compare{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#ecfafb;color:#15424d;font-weight:800}
    .rating{display:inline-flex;gap:4px;color:#f59e0b;font-weight:800}
    .faq-list{display:grid;gap:12px}
    .faq-item{border-radius:18px;overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;background:#fff;border:0;color:var(--text);font-size:1rem;font-weight:700;text-align:left}
    .faq-a{padding:0 18px 16px;color:var(--muted);display:none}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q .plus{transform:rotate(45deg)}
    .reviews,.articles,.cases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .name{font-weight:800}
    .review .role{font-size:.88rem;color:var(--muted);margin-bottom:10px}
    .review p,.case p,.article p{margin:0;color:#45616b}
    .article .meta{font-size:.86rem;color:#6b8590;margin-top:10px}
    .form-box{border-radius:24px;padding:22px}
    form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:.92rem;font-weight:700;margin-bottom:6px;color:#274752}
    input,select,textarea{width:100%;border:1px solid #cfe2e6;border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .note-box{border-radius:22px;padding:18px;background:linear-gradient(180deg,#fff 0%,#f2fbfc 100%)}
    .footer-network,.footer-links,.footer-contact{display:grid;gap:12px}
    footer{margin-top:18px;background:#eaf8fa;color:#1f3e47;border-top:1px solid #d4e9ee}
    .footer-inner{padding:28px 0;display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:20px}
    .footer-inner a{color:#0d5f6c}
    .subfooter{border-top:1px solid #d4e9ee;padding:14px 0;color:#5a7480;font-size:.92rem}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:80;display:grid;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:0;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 12px 28px rgba(37,99,235,.2);cursor:pointer}
    .mobile-only{display:none}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .scroll-reveal.visible{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.split,.reviews,.articles,.cases,.grid-3,.grid-4,.footer-inner{grid-template-columns:1fr 1fr}
      .hero-grid,.split,.footer-inner{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav{display:none;position:absolute;left:16px;right:16px;top:66px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
      .nav.open{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
      .menu-btn{display:inline-flex}
      .hero{padding-top:22px}
      .hero-copy{padding:24px}
      .metrics,.grid-3,.grid-4,.reviews,.articles,.cases,form{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .mobile-only{display:block}
      .desktop-only{display:none}
    }