:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --card2:#f8fbff;
      --text:#182230;
      --muted:#5c6b7e;
      --line:#d9e3f1;
      --brand:#2f6bff;
      --brand2:#7b4dff;
      --accent:#00c2ff;
      --warm:#ff9f43;
      --shadow:0 16px 40px rgba(26,48,85,.10);
      --radius:20px;
      --radius2:28px;
      --max:1200px;
    }
    *{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;
      background:
        radial-gradient(circle at top left, rgba(123,77,255,.10), transparent 28%),
        radial-gradient(circle at right 20%, rgba(0,194,255,.10), transparent 22%),
        linear-gradient(180deg, #f7faff 0%, #f4f8fd 42%, #f8fbff 100%);
      color:var(--text);
      line-height:1.7;
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .topbar,.site-header,.section,.site-footer{position:relative}
    .topbar{
      background:linear-gradient(90deg, rgba(47,107,255,.10), rgba(123,77,255,.10));
      border-bottom:1px solid rgba(217,227,241,.9);
      color:var(--text);
    }
    .topbar-inner{
      display:flex;justify-content:space-between;align-items:center;gap:14px;
      padding:10px 0;flex-wrap:wrap;font-size:14px
    }
    .topbar .mini-links{display:flex;gap:14px;flex-wrap:wrap}
    .site-header{
      position:sticky;top:0;z-index:40;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(246,248,252,.86);
      border-bottom:1px solid rgba(217,227,241,.9);
    }
    .header-inner{
      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:5px;box-shadow:0 8px 20px rgba(31,66,127,.08)}
    .brand-title{min-width:0}
    .brand-title strong{display:block;font-size:18px;line-height:1.2}
    .brand-title span{display:block;font-size:12px;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    nav ul{list-style:none;margin:0;padding:0;display:flex;gap:18px;align-items:center;flex-wrap:wrap}
    nav a{color:var(--text);font-weight:600;font-size:14px}
    .header-actions{display:flex;gap:10px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:999px;padding:12px 18px;font-weight:700;border:1px solid transparent;
      transition:.25s ease;cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 28px rgba(47,107,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(26,48,85,.14)}
    .hero{padding:34px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .95fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.metric,.pricebox,.case,.form-card,.timeline li,.compare-wrap,.network-card,.helpbox{
      background:linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,251,255,.96));
      border:1px solid rgba(217,227,241,.95);
      box-shadow:var(--shadow);
      border-radius:var(--radius2);
    }
    .hero-main{padding:34px;overflow:hidden}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:rgba(47,107,255,.10);color:var(--brand);padding:8px 14px;border-radius:999px;
      font-weight:700;font-size:13px
    }
    h1{font-size:clamp(30px,4vw,54px);line-height:1.12;margin:16px 0 14px}
    .hero p{margin:0;color:var(--muted);font-size:16px;max-width:60ch}
    .hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
    .mini-stat{
      padding:14px 14px 15px;border-radius:18px;background:linear-gradient(135deg,#f6f9ff,#eef4ff);
      border:1px solid var(--line)
    }
    .mini-stat strong{display:block;font-size:20px;color:var(--text)}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px;display:grid;gap:14px;align-content:start}
    .hero-side .visual{
      padding:18px;border-radius:22px;background:
      linear-gradient(135deg, rgba(47,107,255,.12), rgba(123,77,255,.10) 55%, rgba(0,194,255,.08));
      border:1px solid rgba(47,107,255,.16)
    }
    .badge-row{display:flex;flex-wrap:wrap;gap:10px}
    .badge{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .card{padding:22px}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(47,107,255,.12), rgba(123,77,255,.12));color:var(--brand);font-weight:900
    }
    .metrics .metric strong{font-size:28px;display:block}
    .metrics .metric span{color:var(--muted);font-size:13px}
    .metrics .metric{padding:22px}
    .split-2{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    .list-clean{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .list-clean li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
    .list-clean li:before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));margin-top:9px;flex:0 0 auto}
    .service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .service-card h3,.case h3,.review h3,.article h3,.helpbox h3,.panel h3{margin:12px 0 8px;font-size:18px}
    .service-card p,.case p,.review p,.article p,.helpbox p{margin:0;color:var(--muted)}
    .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .chip{font-size:12px;border:1px solid var(--line);background:#fff;padding:7px 10px;border-radius:999px;color:#31425d}
    .workflow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
    .step{padding:18px;position:relative;overflow:hidden}
    .step .num{font-size:13px;color:var(--brand);font-weight:800}
    .step h3{margin:10px 0 8px;font-size:17px}
    .compare-wrap{padding:20px;overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:820px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{color:var(--text);background:#f5f8ff;position:sticky;top:0}
    .rating{font-weight:800;color:var(--brand)}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:14px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px;color:var(--muted)}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.active .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:.25s ease}
    .reviews,.articles,.cases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .review .meta{display:flex;align-items:center;gap:10px;margin-top:14px;color:var(--muted);font-size:13px}
    .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-weight:800}
    .timeline{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .timeline li{padding:18px 18px 18px 20px;border-left:4px solid var(--brand)}
    .timeline strong{display:block;margin-bottom:6px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);
      font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(47,107,255,.65);box-shadow:0 0 0 4px rgba(47,107,255,.10)}
    .full{grid-column:1/-1}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:8px}
    .site-footer{
      margin-top:18px;padding:26px 0 30px;border-top:1px solid var(--line);
      background:linear-gradient(180deg, rgba(241,246,255,.95), rgba(245,248,252,.98));
      color:var(--text)
    }
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr .95fr;gap:16px}
    .footer-col{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 10px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text)}
    .copyright{margin-top:16px;color:var(--muted);font-size:13px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 30px rgba(47,107,255,.26)
    }
    .float-panel{
      position:fixed;right:16px;bottom:82px;z-index:50;width:min(320px, calc(100vw - 32px));
      display:none;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:16px
    }
    .float-panel.active{display:block}
    .float-panel img{border-radius:16px;border:1px solid var(--line)}
    .scroll-top{position:fixed;left:16px;bottom:16px;z-index:50}
    .soft-note{font-size:13px;color:var(--muted)}
    .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .gallery img{border-radius:18px;border:1px solid var(--line);width:100%;height:auto}
    .sticky-tags{display:flex;gap:10px;flex-wrap:wrap}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.split-2,.footer-grid,.reviews,.articles,.cases,.service-grid,.workflow,.grid-4{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .header-inner{flex-wrap:wrap}
      nav{width:100%}
      nav ul{display:none;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;margin-top:8px}
      nav.open ul{display:flex}
      .nav-toggle{display:inline-flex}
      .header-actions{margin-left:auto}
    }
    @media (max-width: 720px){
      .container{width:min(var(--max), calc(100% - 22px))}
      .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.metric,.pricebox,.case,.form-card,.timeline li,.compare-wrap,.network-card,.helpbox,.footer-col{border-radius:18px}
      .hero-grid,.split-2,.footer-grid,.reviews,.articles,.cases,.service-grid,.workflow,.grid-4,.gallery,.form-grid{grid-template-columns:1fr}
      .topbar-inner,.section-head{align-items:flex-start}
      .section-head{flex-direction:column}
      .header-actions .btn-secondary{display:none}
      .mobile-only{display:inline-flex}
      h1{font-size:clamp(28px,8vw,42px)}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}