:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f3f7ff;
      --line:#dde4f2;
      --text:#172033;
      --muted:#5a6784;
      --brand:#246bff;
      --brand2:#7d4fff;
      --accent:#ff8f4d;
      --good:#0f9d73;
      --shadow:0 18px 45px rgba(31,51,105,.09);
      --radius:22px;
      --radius-sm:16px;
      --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(36,107,255,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(255,143,77,.12), transparent 22%),
        linear-gradient(180deg, #fbfcff 0%, #f5f7fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(221,228,242,.75);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:18px;
      min-height:76px;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand img{width:40px;height:40px;object-fit:contain}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:#eef4ff}
    .nav-cta{display:flex; align-items:center; gap:10px}
    .btn{
      border:0; cursor:pointer; display:inline-flex; align-items:center; justify-content:center;
      gap:8px; border-radius:999px; padding:12px 18px; font-weight:700; transition:.22s;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff; box-shadow:0 14px 28px rgba(36,107,255,.22)}
    .btn-secondary{background:#fff; color:var(--text); border:1px solid var(--line)}
    .btn:hover{transform:translateY(-1px); box-shadow:var(--shadow)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);padding:10px 12px;border-radius:14px}
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid; grid-template-columns:1.18fr .82fr; gap:22px; align-items:stretch;
    }
    .hero-card,.glass-card,.section-card,.review-card,.faq-item,.form-card,.mini-card,.case-card,.article-card,.compare-card{
      background:rgba(255,255,255,.88); border:1px solid rgba(221,228,242,.9); box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-card{padding:30px; position:relative; overflow:hidden}
    .hero-card::before,.hero-card::after{
      content:""; position:absolute; border-radius:50%; filter:blur(10px); pointer-events:none;
    }
    .hero-card::before{width:180px;height:180px;background:rgba(36,107,255,.10); top:-50px; right:-30px}
    .hero-card::after{width:220px;height:220px;background:rgba(255,143,77,.10); bottom:-110px; left:-80px}
    .eyebrow{display:inline-flex; align-items:center; gap:8px; background:#eef4ff; color:#2452cf; border:1px solid #d7e5ff; padding:8px 12px; border-radius:999px; font-size:13px; font-weight:700}
    h1{margin:16px 0 14px; font-size:clamp(30px,5vw,54px); line-height:1.08; letter-spacing:-.02em}
    .lead{margin:0; color:var(--muted); font-size:16px; line-height:1.8; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .hero-points{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:24px}
    .point{background:linear-gradient(180deg,#fff, #f8fbff); border:1px solid var(--line); border-radius:18px; padding:14px}
    .point b{display:block; font-size:20px}
    .point span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.5}
    .hero-side{display:grid; gap:14px}
    .hero-panel{padding:18px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line)}
    .stat strong{display:block;font-size:24px}
    .stat span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.45}
    .notice{padding:16px 18px;background:linear-gradient(135deg, rgba(36,107,255,.08), rgba(255,143,77,.08));border:1px solid #dbe5ff;border-radius:18px}
    .notice p{margin:0;color:#2d3550;line-height:1.7}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:64ch}
    .section-card{padding:24px}
    .about-grid,.network-grid,.flow-grid,.service-grid,.case-grid,.review-grid,.article-grid,.compare-grid{display:grid;gap:16px}
    .about-grid{grid-template-columns:1.05fr .95fr}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px; margin-top:18px}
    .tag{padding:9px 12px;border-radius:999px;background:#f3f7ff;border:1px solid #dbe6ff;color:#29406f;font-size:13px}
    .service-grid{grid-template-columns:repeat(3,1fr)}
    .mini-card{padding:18px}
    .mini-card h3{margin:10px 0 8px;font-size:18px}
    .mini-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(36,107,255,.12), rgba(125,79,255,.12));
      color:var(--brand);font-weight:800;
    }
    .flow-grid{grid-template-columns:repeat(6,1fr)}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f7f9ff);border:1px solid var(--line);position:relative}
    .step::after{content:"";position:absolute;right:-10px;top:50%;width:20px;height:1px;background:#c8d5f4}
    .step:last-child::after{display:none}
    .step small{display:inline-block;color:#2452cf;font-weight:800}
    .step h3{margin:10px 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .compare-card{padding:0; overflow:hidden}
    .table-wrap{overflow:auto}
    table{width:100%; border-collapse:collapse; min-width:860px}
    th,td{padding:16px 18px; text-align:left; border-bottom:1px solid var(--line); vertical-align:top}
    th{background:#f6f9ff; font-size:14px}
    td{font-size:14px; color:var(--text); line-height:1.65}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:#e8fbf4;color:#0e7a58}
    .badge.warn{background:#fff3e9;color:#bf5d16}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{padding:20px;border-radius:20px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line)}
    .price-card b{font-size:28px;display:block;margin-top:6px}
    .price-card p{margin:10px 0 0;color:var(--muted);line-height:1.7;font-size:14px}
    .case-grid{grid-template-columns:repeat(3,1fr)}
    .case-card{padding:16px}
    .case-card img{width:100%; aspect-ratio:16/10; object-fit:cover; border-radius:16px; background:#eef2fb}
    .case-card h3{margin:12px 0 8px;font-size:17px}
    .case-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .network-grid{grid-template-columns:repeat(4,1fr)}
    .network-item{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line)}
    .network-item strong{display:block;font-size:18px}
    .network-item span{display:block;color:var(--muted);margin-top:8px;font-size:14px;line-height:1.7}
    .review-grid{grid-template-columns:repeat(3,1fr)}
    .review-card{padding:18px}
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg, rgba(36,107,255,.14), rgba(255,143,77,.14));font-weight:800;color:#234}
    .review-card h3{margin:0;font-size:16px}
    .review-card p{margin:10px 0 0;color:var(--muted);line-height:1.75;font-size:14px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; padding:18px 20px; display:flex; justify-content:space-between; gap:12px; align-items:center;
      background:none; border:0; color:var(--text); font-size:16px; font-weight:700; cursor:pointer; text-align:left;
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 20px}
    .faq-a p{margin:0 0 18px; color:var(--muted); line-height:1.75}
    .faq-item.open .faq-a{max-height:180px}
    .faq-item.open .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:transform .22s ease;color:var(--brand)}
    .article-grid{grid-template-columns:repeat(3,1fr)}
    .article-card{padding:18px}
    .article-card .meta{font-size:13px;color:#6a7692;margin-bottom:10px}
    .article-card h3{margin:0 0 10px;font-size:17px}
    .article-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .form-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:16px}
    .form-card{padding:22px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:block;font-size:14px;font-weight:700;margin:0 0 8px}
    input,select,textarea{
      width:100%; border:1px solid var(--line); background:#fff; border-radius:14px; padding:12px 14px;
      font:inherit; color:var(--text); outline:none; transition:.2s;
    }
    textarea{min-height:122px; resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#9ab7ff; box-shadow:0 0 0 4px rgba(36,107,255,.08)}
    .field{margin-bottom:12px}
    .contact-box{padding:22px; border-radius:22px; background:linear-gradient(180deg,#fff,#f6f9ff); border:1px solid var(--line)}
    .contact-grid{display:grid;grid-template-columns:1fr 160px;gap:16px;align-items:start}
    .qr{border:1px solid var(--line);border-radius:18px;padding:10px;background:#fff}
    .qr img{width:100%;border-radius:14px;object-fit:cover}
    .footer{
      margin-top:18px; padding:24px 0 28px;
      background:#f2f5fb; border-top:1px solid var(--line); color:#344055;
    }
    .footer-grid{display:grid; grid-template-columns:1.05fr .95fr .9fr; gap:18px}
    .footer h3{margin:0 0 12px;font-size:16px}
    .footer p,.footer a{color:#4a5874;line-height:1.8;font-size:14px}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .small{font-size:13px;color:#62708b}
    .float{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .float a,.float button{
      width:52px;height:52px;border-radius:16px;border:0;background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff;
      display:grid;place-items:center; box-shadow:0 14px 28px rgba(36,107,255,.24); cursor:pointer;
    }
    .float .secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .reveal{opacity:0; transform:translateY(14px); transition:.55s ease}
    .reveal.show{opacity:1; transform:none}
    .home-link{font-weight:700}
    .sticky-cta{
      display:none; position:fixed; left:16px; right:16px; bottom:16px; z-index:58;
      padding:12px; border-radius:18px; background:rgba(255,255,255,.96); border:1px solid var(--line); box-shadow:var(--shadow);
    }
    .sticky-cta .inner{display:flex; gap:10px}
    .sticky-cta .inner a{flex:1}
    .muted{color:var(--muted)}
    @media (max-width: 1080px){
      .hero-grid,.about-grid,.form-grid,.footer-grid{grid-template-columns:1fr}
      .service-grid,.case-grid,.review-grid,.article-grid,.network-grid{grid-template-columns:repeat(2,1fr)}
      .flow-grid{grid-template-columns:repeat(3,1fr)}
      .step::after{display:none}
    }
    @media (max-width: 760px){
      .nav-links{
        position:absolute; left:16px; right:16px; top:76px; display:none; flex-direction:column; align-items:stretch;
        padding:14px; background:rgba(255,255,255,.98); border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .menu-btn{display:inline-grid;place-items:center}
      .nav{position:relative}
      .nav-cta{display:none}
      .hero{padding-top:18px}
      .hero-card{padding:22px}
      .hero-points,.stat-grid,.price-grid,.service-grid,.case-grid,.review-grid,.article-grid,.network-grid,.form-row,.flow-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .sticky-cta{display:block}
      .footer{padding-bottom:96px}
      .contact-grid{grid-template-columns:1fr}
    }