:root{
      --bg:#f5fbfc;
      --panel:#ffffff;
      --panel-2:#eefbfb;
      --line:#d8eaee;
      --text:#17313a;
      --muted:#5f7580;
      --brand:#0f9fb1;
      --brand-2:#13c4c7;
      --brand-3:#1463d7;
      --shadow:0 14px 40px rgba(18, 79, 92, .10);
      --radius:20px;
      --radius-sm:14px;
      --max:1200px;
    }
    *{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:
      radial-gradient(circle at top left, rgba(19,196,199,.12), transparent 28%),
      radial-gradient(circle at top right, rgba(20,99,215,.10), transparent 26%),
      linear-gradient(180deg,#f8fdfd 0%, #f4fbfc 100%);
      color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(245,251,252,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(216,234,238,.75)}
    .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:12px;background:#fff;padding:6px;box-shadow:0 8px 24px rgba(15,159,177,.12)}
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{font-size:1rem;letter-spacing:.3px}
    .brand-text span{font-size:.84rem;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px}
    .nav-links a{font-size:.92rem;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a:focus-visible{background:#e9f9fb;color:var(--text);outline:none}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:11px 16px;font-weight:700;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff;box-shadow:0 12px 28px rgba(20,99,215,.18)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(18, 79, 92, .14)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:40px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.timeline li,.price-card,.article,.compare-box,.form-card{background:var(--panel);border:1px solid rgba(216,234,238,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .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(19,196,199,.20), transparent 62%)}
    .hero-main:before{width:280px;height:280px;top:-120px;right:-100px}
    .hero-main:after{width:220px;height:220px;bottom:-110px;left:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#e9fbfc;border:1px solid #cceff2;color:#0f6f7d;padding:7px 12px;border-radius:999px;font-size:.88rem;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.4rem);line-height:1.1}
    .lead{font-size:1.04rem;color:var(--muted);max-width:46rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .mini{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f9fefe,#eefbfc);border:1px solid #d7edf0}
    .mini strong{display:block;font-size:1.05rem}
    .mini span{font-size:.88rem;color:var(--muted)}
    .hero-side{padding:18px;display:grid;gap:14px}
    .hero-side .panel{padding:16px;background:linear-gradient(180deg,#ffffff,#f4fbfc)}
    .stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:20px 0 0}
    .stat{padding:18px}
    .stat strong{display:block;font-size:1.4rem}
    .stat span{color:var(--muted);font-size:.9rem}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:1.6rem}
    .section-head p{margin:0;color:var(--muted);max-width:44rem}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card,.panel,.review,.article,.compare-box,.form-card{padding:20px}
    .card h3,.panel h3,.article h3{margin:6px 0 10px;font-size:1.08rem}
    .muted{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#eefafb;border:1px solid #d6eef1;color:#24535c;font-size:.9rem}
    .flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;background:linear-gradient(180deg,#fff,#f7fcfd);border:1px solid var(--line);border-radius:18px;position:relative}
    .step b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff;margin-bottom:10px}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf3f5;text-align:left;vertical-align:top}
    th{background:#f2fbfc;font-size:.95rem}
    tr:last-child td{border-bottom:none}
    .score{font-size:2rem;font-weight:800;color:#0d7f8d}
    .review-grid,.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#f0b400;letter-spacing:1px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 18px}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;background:none;border:0;padding:18px 20px;text-align:left;font-size:1rem;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;padding:0 20px;color:var(--muted);transition:max-height .28s ease,padding .28s ease}
    .faq-item.active .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-item.active .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:.25s}
    .forms{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    form{display:grid;gap:12px}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #cfe4e8;border-radius:14px;background:#fff;color:var(--text);font:inherit}
    textarea{min-height:120px;resize:vertical}
    label{font-size:.92rem;font-weight:700;color:#35545d}
    .field{display:grid;gap:7px}
    .footer{padding:24px 0 30px;border-top:1px solid rgba(216,234,238,.8);background:#f3fafb;color:var(--text)}
    .footer a{color:#175f6b}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:16px;align-items:start}
    .social{display:flex;flex-wrap:wrap;gap:10px}
    .kefu{padding:14px;background:#fff;border:1px dashed #cfe4e8;border-radius:18px;display:grid;gap:10px;justify-items:start}
    .kefu img{width:160px;border-radius:14px;background:#fff;padding:6px;border:1px solid #e7eff1}
    .floating{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .floating a,.floating button{border:0;border-radius:999px;padding:12px 14px;box-shadow:0 12px 24px rgba(14,78,90,.16);font-weight:700}
    .floating a{background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff}
    .floating button{background:#fff;color:var(--text);border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(12px);transition:.55s ease}
    .reveal.visible{opacity:1;transform:translateY(0)}
    .banner-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .banner-grid img,.gallery img{width:100%;height:auto;border-radius:16px;border:1px solid var(--line);background:#fff}
    .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .price-card{display:grid;gap:10px}
    .chips{display:flex;flex-wrap:wrap;gap:8px}
    .chip{padding:7px 10px;border-radius:999px;background:#edf9fb;border:1px solid #d6edf1;font-size:.86rem;color:#2b5f69}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.review-grid,.article-grid,.forms,.footer-grid,.hero-points,.stat-grid,.flow,.banner-grid,.gallery{grid-template-columns:1fr 1fr}
      .hero-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;background:#fff;padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
    }
    @media (max-width: 640px){
      .container{width:min(100% - 22px, var(--max))}
      .hero-main{padding:22px}
      h1{font-size:2rem}
      .grid-3,.grid-2,.review-grid,.article-grid,.forms,.footer-grid,.hero-points,.stat-grid,.flow,.banner-grid,.gallery{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:start}
      .hero-actions,.nav-cta{width:100%}
      .nav{position:relative}
      .nav-cta{justify-content:space-between}
    }