:root{
      --bg:#f4f8fb;
      --bg2:#ecf5ff;
      --card:#ffffff;
      --text:#183046;
      --muted:#5f7386;
      --line:#d9e6f2;
      --primary:#1c79ff;
      --primary2:#35b9ff;
      --accent:#ffb347;
      --soft:#eaf4ff;
      --shadow:0 18px 50px rgba(24,48,70,.08);
      --radius:20px;
      --radius2:26px;
      --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(circle at top left, rgba(53,185,255,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(28,121,255,.12), transparent 24%),
        linear-gradient(180deg, #fbfdff 0%, var(--bg) 38%, #f7fbff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(16px);
      background:rgba(250,253,255,.82);
      border-bottom:1px solid rgba(217,230,242,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;box-shadow:0 8px 20px rgba(24,48,70,.08)}
    .brand span{font-size:18px;letter-spacing:.5px}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .navlinks a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .navlinks a:hover{color:var(--primary);background:#edf6ff}
    .navbtns{display:flex;align-items:center;gap:10px}
    .btn,.btn-ghost,.btn-dark{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:999px;padding:12px 18px;font-weight:700;font-size:14px;cursor:pointer;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
      white-space:nowrap;
    }
    .btn{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 26px rgba(28,121,255,.22)}
    .btn:hover,.btn-ghost:hover,.btn-dark:hover{transform:translateY(-2px)}
    .btn-ghost{background:#eef6ff;color:var(--primary)}
    .btn-dark{background:#183046;color:#fff}
    .menu-toggle{display:none;background:#edf6ff;color:var(--text)}
    .hero{
      position:relative;
      overflow:hidden;
      padding:34px 0 18px;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none
    }
    .hero::before{width:260px;height:260px;background:rgba(53,185,255,.18);top:-90px;right:-60px}
    .hero::after{width:220px;height:220px;background:rgba(255,179,71,.12);bottom:10px;left:-70px}
    .hero-wrap{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.pricebox,.article,.case,.compare,.formbox,.timeline li,.step{
      background:rgba(255,255,255,.9);border:1px solid rgba(217,230,242,.9);box-shadow:var(--shadow)
    }
    .hero-main{
      border-radius:var(--radius2);
      padding:32px;
      position:relative;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:var(--soft);color:var(--primary);border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,4vw,54px);line-height:1.08;letter-spacing:-.8px}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .trust{
      display:flex;gap:12px;flex-wrap:wrap;margin-top:18px
    }
    .pill{padding:10px 14px;border-radius:999px;background:#f3f8fd;border:1px solid var(--line);font-size:13px;color:#335069}
    .hero-side{
      border-radius:var(--radius2);padding:22px;display:flex;flex-direction:column;gap:16px;
      background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);
    }
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini{
      border-radius:18px;padding:16px;background:linear-gradient(180deg,#f8fbff,#eef6ff);border:1px solid #ddeaf7
    }
    .mini strong{display:block;font-size:20px;margin-bottom:6px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.6}
    .section{padding:18px 0 0}
    .section h2{margin:0 0 12px;font-size:28px;line-height:1.2}
    .section .sub{margin:0 0 20px;color:var(--muted);line-height:1.75}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .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,.panel,.faq-item,.review,.pricebox,.article,.case,.compare,.formbox,.step,.timeline li{
      border-radius:22px;padding:20px
    }
    .card h3,.case h3,.article h3,.review h3,.pricebox h3,.step h3{margin:0 0 10px;font-size:18px}
    .card p,.case p,.article p,.review p,.pricebox p,.step p,.panel p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,#e8f4ff,#dcedff);color:var(--primary);font-weight:800;margin-bottom:14px
    }
    .tagcloud{display:flex;gap:10px;flex-wrap:wrap}
    .tag{padding:9px 12px;border-radius:999px;background:#f3f8fd;border:1px solid var(--line);font-size:13px;color:#325067}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #e6eef6;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f6faff;color:#17324a}
    tr:last-child td{border-bottom:0}
    .rating{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:14px 0 0
    }
    .stars{color:#ffb347;font-size:20px;letter-spacing:2px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;padding:18px 20px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;
      display:flex;justify-content:space-between;align-items:center;gap:12px
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted);line-height:1.75}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease}
    .reviews .review{height:100%}
    .avatar{
      width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#dff0ff,#cce6ff);display:grid;place-items:center;font-weight:800;color:#2763a8;margin-bottom:12px
    }
    .formbox form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#274058}
    input,select,textarea{
      width:100%;border:1px solid #d7e5f0;background:#fbfdff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:border .2s, box-shadow .2s
    }
    input:focus,select:focus,textarea:focus{border-color:#8cc8ff;box-shadow:0 0 0 4px rgba(28,121,255,.1)}
    textarea{min-height:120px;resize:vertical}
    .footer{
      margin-top:22px;padding:24px 0 30px;border-top:1px solid rgba(217,230,242,.85);background:rgba(246,250,254,.9)
    }
    .footer a{color:#245e9e}
    .footer small,.footer p{color:var(--muted)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:start}
    .quicklinks{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{padding:12px 14px;border-radius:999px;background:#fff;box-shadow:0 12px 30px rgba(24,48,70,.14);border:1px solid #dbe7f3;font-size:13px;font-weight:700;color:#1b3d5b}
    .float-btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease, transform .55s ease}
    .reveal.visible{opacity:1;transform:none}
    .mobile-only{display:none}
    .compare .badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#edf6ff;color:var(--primary);font-weight:700;font-size:13px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 18px}
    .timeline strong{display:block;margin-bottom:6px}
    .case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article .meta{font-size:13px;color:var(--muted);margin-top:10px}
    .hero-img{
      margin-top:8px;border-radius:20px;padding:18px;background:linear-gradient(180deg,#eff7ff,#fdfefe);border:1px solid #dce8f3
    }
    .hero-img img{border-radius:14px}
    .form-note{font-size:13px;color:var(--muted);margin-top:10px}
    @media (max-width: 1024px){
      .hero-wrap,.grid-4,.grid-3,.articles,.case-grid,.footer-grid,.split{grid-template-columns:1fr}
      .grid-2,.formbox form{grid-template-columns:1fr}
    }
    @media (max-width: 860px){
      .navlinks,.navbtns .btn-ghost{display:none}
      .menu-toggle{display:inline-flex}
      .navlinks.open{
        display:flex;position:absolute;left:20px;right:20px;top:76px;flex-direction:column;align-items:flex-start;
        padding:14px;background:#fff;border:1px solid #dbe7f3;border-radius:18px;box-shadow:var(--shadow)
      }
      .mobile-only{display:block}
      .hero-main{padding:24px}
      .hero-side{padding:18px}
      .section h2{font-size:24px}
      table{min-width:680px}
    }