:root{
      --bg:#f5f8ff;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#16304a;
      --muted:#5d7086;
      --line:#dbe5f3;
      --brand:#0f7cff;
      --brand2:#15c2ff;
      --accent:#ffb74d;
      --shadow:0 18px 50px rgba(21,70,130,.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;color:var(--text);background:
      radial-gradient(circle at top left, rgba(21,194,255,.10), transparent 30%),
      radial-gradient(circle at 85% 10%, rgba(15,124,255,.08), transparent 28%),
      linear-gradient(180deg,var(--bg),#fbfcff 45%,#f7faff 100%);
    }
    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:50;background:rgba(245,248,255,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,229,243,.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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(15,124,255,.12)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .menu{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .menu a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px}
    .menu a:hover,.menu a:focus{background:#eaf3ff;color:var(--brand)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(15,124,255,.24)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    main{padding:18px 0 0}
    section{padding:54px 0}
    .hero{padding-top:22px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-copy,.glass-card,.panel,.faq-item,.review-card,.news-card,.service-card,.step-card,.metric,.form-card,.compare-wrap,.info-card{background:rgba(255,255,255,.92);border:1px solid rgba(219,229,243,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eaf3ff;color:var(--brand);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(32px,5vw,56px);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f9fbff,#eef5ff);border:1px solid var(--line)}
    .mini b{display:block;font-size:18px;margin-bottom:6px}
    .hero-side{display:grid;gap:14px}
    .side-top{padding:22px}
    .side-top h2,.section-title h2{margin:0;font-size:clamp(24px,3vw,36px);line-height:1.15}
    .sub{margin:10px 0 0;color:var(--muted);line-height:1.8}
    .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .metric{padding:18px}
    .metric strong{display:block;font-size:28px;color:var(--brand);line-height:1}
    .metric span{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.5}
    .section-title{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-title p{margin:0;color:var(--muted);line-height:1.7;max-width:72ch}
    .grid-3,.grid-4{display:grid;gap:14px}
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
    .grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
    .service-card,.step-card,.review-card,.news-card,.info-card{padding:22px}
    .service-card h3,.step-card h3,.review-card h3,.news-card h3,.info-card h3{margin:0 0 10px;font-size:18px}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef5ff;color:var(--brand);font-size:12px;font-weight:700;margin-bottom:12px}
    .service-card p,.step-card p,.review-card p,.news-card p,.info-card p{margin:0;color:var(--muted);line-height:1.8}
    .timeline{display:grid;gap:12px}
    .timeline .row{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:start;padding:14px 0;border-top:1px dashed var(--line)}
    .timeline .row:first-child{border-top:none;padding-top:0}
    .timeline .row b{color:var(--brand)}
    .compare-wrap{padding:18px;overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f6f9ff;color:#17314e;position:sticky;top:0}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;padding:18px 20px;background:transparent;border:none;text-align:left;font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
    .faq-a p{margin:0;padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:180px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease}
    .reviews,.news,.services,.steps,.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .quote{font-size:14px;color:#27445f;line-height:1.8;margin-top:10px}
    .form-card{padding:22px}
    form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px 14px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:120px;resize:vertical;grid-column:1/-1}
    .full{grid-column:1/-1}
    .form-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:4px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#31516f}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px}
    .footer-links a{color:#27445f}
    footer{padding:24px 0 30px;border-top:1px solid var(--line);background:#f7faff;color:#24415c}
    .footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .foot-small{color:#5e7187;line-height:1.8}
    .floating{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px}
    .floating a,.floating button{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;border:none;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 24px rgba(15,124,255,.28);cursor:pointer}
    .floating .ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.visible{opacity:1;transform:none}
    .center{text-align:center}
    .contact-card{display:grid;grid-template-columns:180px 1fr;gap:18px;align-items:center;padding:20px}
    .contact-card img{width:180px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .home-link{font-weight:700}
    .marquee{display:flex;gap:10px;flex-wrap:wrap}
    .pill{padding:10px 12px;border-radius:999px;background:#edf5ff;color:#29557c;border:1px solid #d8e6f8;font-size:13px}
    @media (max-width: 980px){
      .hero-grid,.footer-top,.contact-card,.section-title{grid-template-columns:1fr;display:grid}
      .grid-3,.grid-4,.reviews,.news,.services,.steps,.info-grid,.stats,.hero-points{grid-template-columns:repeat(2,minmax(0,1fr))}
      .menu{display:none}
      .mobile-toggle{display:inline-flex}
      .nav.open .menu{display:flex;position:absolute;left:16px;right:16px;top:72px;flex-direction:column;align-items:flex-start;background:#fff;padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      header{position:sticky}
    }
    @media (max-width: 640px){
      .grid-3,.grid-4,.reviews,.news,.services,.steps,.info-grid,.stats,.hero-points,.hero-grid,form,.timeline .row,.contact-card{grid-template-columns:1fr}
      .hero-copy,.side-top,.service-card,.step-card,.review-card,.news-card,.info-card,.form-card{padding:18px}
      section{padding:40px 0}
      .hero-copy{padding:22px}
      .nav-actions .btn-secondary{display:none}
    }