:root{
      --bg:#f5f8ff;
      --bg2:#ecf3ff;
      --card:#ffffff;
      --text:#13233d;
      --muted:#5d6c86;
      --primary:#0b57d0;
      --primary2:#1d7ef0;
      --line:#dce7f7;
      --soft:#eef5ff;
      --accent:#ffb300;
      --shadow:0 16px 40px rgba(11,87,208,.10);
      --radius:18px;
      --max: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(29,126,240,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(11,87,208,.10), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{max-width:var(--max);margin:0 auto;padding:0 18px}
    .site-header{
      position:sticky;top:0;z-index:1000;
      backdrop-filter:blur(14px);
      background:rgba(248,251,255,.88);
      border-bottom:1px solid rgba(220,231,247,.9);
    }
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;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;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:16px;line-height:1.15}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#24415f;padding:8px 0;position:relative;white-space:nowrap}
    .nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--primary);transition:.25s}
    .nav a:hover::after{width:100%}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px;font-size:14px}
    .hero{padding:42px 0 26px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.quote,.table-wrap,.form-wrap{background:var(--card);border:1px solid rgba(220,231,247,.95);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:999px;background:linear-gradient(135deg, rgba(29,126,240,.14), rgba(11,87,208,.02))}
    .hero-main::before{width:220px;height:220px;right:-80px;top:-80px}
    .hero-main::after{width:160px;height:160px;right:70px;bottom:-80px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(11,87,208,.08);color:var(--primary);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .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:12px;padding:13px 18px;font-weight:700;border:1px solid transparent;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 28px rgba(11,87,208,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 34px rgba(11,87,208,.28)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:rgba(11,87,208,.18)}
    .btn-secondary:hover{transform:translateY(-1px);border-color:rgba(11,87,208,.35)}
    .hero-side{padding:22px}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .mini{padding:16px;border-radius:16px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line)}
    .mini strong{display:block;font-size:22px;color:var(--primary)}
    .mini span{display:block;margin-top:5px;color:var(--muted);font-size:13px;line-height:1.5}
    .section{padding:18px 0 6px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:64ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .card{padding:20px}
    .card h3{margin:8px 0 8px;font-size:18px}
    .card p,.card li,.panel p,.panel li{color:var(--muted);line-height:1.75}
    .icon{
      width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(11,87,208,.13), rgba(29,126,240,.08));
      color:var(--primary);font-weight:800
    }
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:var(--soft);border:1px solid rgba(11,87,208,.10);font-size:13px;color:#24415f}
    .panel{padding:22px}
    .timeline{display:grid;gap:12px}
    .step{display:grid;grid-template-columns:60px 1fr;gap:14px;align-items:start;padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .step b{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
    .compare{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:880px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    th{background:#f4f8ff;color:#18304f;font-size:14px}
    td{color:#38516f;background:#fff}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:#e7f4ff;color:#0b57d0}
    .badge.warn{background:#fff4d8;color:#9a6b00}
    .rating{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
    .stars{color:#f7a400;font-size:18px;letter-spacing:2px}
    .list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start}
    .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);margin-top:10px;flex:0 0 auto}
    .articles,.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .quote{padding:20px}
    .quote p{margin:0 0 14px;line-height:1.8;color:#344d69}
    .quote strong{display:block}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;text-align:left;background:#fff;border:none;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-a{display:none;padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:.25s}
    .form-wrap{padding:22px}
    form{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:#24415f}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:12px;background:#fff;
      padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s
    }
    textarea{min-height:122px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(11,87,208,.5);box-shadow:0 0 0 4px rgba(11,87,208,.08)}
    .submit-row{grid-column:1/-1;display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:space-between}
    .subnote{color:var(--muted);font-size:13px;line-height:1.7}
    .footer{
      margin-top:18px;padding:24px 0 28px;background:#0c2d66;color:#e9f1ff;border-top:1px solid rgba(255,255,255,.08)
    }
    .footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px;align-items:start}
    .footer h3{margin:0 0 12px;font-size:16px;color:#fff}
    .footer p,.footer li,.footer span{color:#d8e5ff;line-height:1.8}
    .footer .tag{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12);color:#edf4ff}
    .bottom-links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:999;
      display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      display:inline-flex;align-items:center;justify-content:center;
      width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary2));
      color:#fff;box-shadow:0 12px 24px rgba(11,87,208,.24);border:none;cursor:pointer
    }
    .float-panel{
      width:280px;max-width:calc(100vw - 32px);
      background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);
      padding:16px;display:none
    }
    .float-panel.open{display:block}
    .qr{display:grid;grid-template-columns:88px 1fr;gap:12px;align-items:center}
    .qr img{width:88px;height:88px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
    .muted{color:var(--muted)}
    .anchor-space{scroll-margin-top:88px}
    .site-header .home-link{font-weight:700;color:var(--primary)}
    .logo-wrap{display:flex;align-items:center;gap:10px}
    .article-link{color:var(--primary);font-weight:700}
    .case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .case{padding:20px;border-radius:18px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fbff)}
    .case img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid var(--line);margin-bottom:14px}
    .scroll-top{display:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.articles,.reviews,.footer-grid,.case-grid{grid-template-columns:1fr 1fr}
      .grid-3{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .menu-btn{display:inline-flex}
      .nav{display:none;flex-direction:column;align-items:flex-start;gap:10px;padding:12px 0 6px}
      .nav.open{display:flex}
      .hero-grid,.grid-4,.grid-3,.articles,.reviews,.footer-grid,.case-grid,.hero-side,.hero-main{grid-template-columns:1fr}
      .hero-main{padding:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      form{grid-template-columns:1fr}
      .submit-row{grid-column:1}
      .mini-grid{grid-template-columns:1fr 1fr}
      .step{grid-template-columns:1fr}
      .qr{grid-template-columns:1fr}
    }
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}