:root{
      --bg:#f7f9fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#132033;
      --muted:#5f6b7e;
      --line:#dce5f1;
      --brand:#2563eb;
      --brand2:#00b8d9;
      --accent:#10b981;
      --shadow:0 18px 40px rgba(27, 50, 94, .10);
      --shadow2:0 10px 24px rgba(37, 99, 235, .14);
      --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(37,99,235,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(16,185,129,.08), transparent 22%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 38%, #f5f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(220,229,241,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand img{width:40px;height:40px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand .name{display:flex;flex-direction:column;line-height:1.1}
    .brand .name span:first-child{font-size:16px}
    .brand .name span:last-child{font-size:12px;color:var(--muted);font-weight:600}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334155;padding:8px 0;position:relative}
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:.25s ease;border-radius:99px;
    }
    .nav-links a:hover::after,.nav-links a:focus::after{width:100%}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:12px 18px;
      font-weight:700;font-size:14px;cursor:pointer;transition:.25s ease;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#3b82f6);color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 32px rgba(37,99,235,.22)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#b8c7df;box-shadow:0 10px 24px rgba(15,23,42,.08)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px;cursor:pointer}
    main{overflow:hidden}
    .hero{
      padding:36px 0 18px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.72)),
        radial-gradient(circle at 20% 10%, rgba(37,99,235,.10), transparent 18%),
        radial-gradient(circle at 85% 15%, rgba(0,184,217,.10), transparent 16%);
    }
    .hero-grid{
      display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.section-card,.info-card,.review,.faq-item,.pricing-card,.timeline-item,.service-card,.case-card,.article-card,.compare-card,.form-card{
      background:var(--card);border:1px solid rgba(220,229,241,.9);border-radius:var(--radius);box-shadow:var(--shadow);
    }
    .hero-copy{padding:34px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(16,185,129,.10));color:#1d4ed8;font-weight:700;font-size:13px;
    }
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,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-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}
    .point{padding:14px 16px;border-radius:16px;background:linear-gradient(180deg,#f8fbff,#f3f7fe);border:1px solid #e2ebf8}
    .point strong{display:block;font-size:14px;margin-bottom:6px}
    .point span{color:var(--muted);font-size:13px;line-height:1.6}
    .hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:22px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8fbff);border:1px solid #e5edf8}
    .stat strong{display:block;font-size:20px;margin-bottom:6px}
    .stat span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-panel{padding:22px;display:flex;flex-direction:column;gap:16px;position:relative;overflow:hidden}
    .hero-panel::before{
      content:"";position:absolute;inset:auto -60px -80px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(37,99,235,.16), transparent 68%);
    }
    .panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .panel-badge{padding:8px 10px;border-radius:12px;background:#eff6ff;color:#1d4ed8;font-weight:700;font-size:12px}
    .grid-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini{
      padding:14px;border-radius:16px;background:#f8fbff;border:1px solid #e2ebf8;
    }
    .mini strong{display:block;font-size:14px;margin-bottom:6px}
    .mini span{color:var(--muted);font-size:13px;line-height:1.55}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:68ch}
    .section-card{padding:24px}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .service-grid,.case-grid,.review-grid,.article-grid,.faq-grid,.network-grid,.benefit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .service-card,.case-card,.article-card,.review,.pricing-card,.compare-card,.faq-item,.timeline-item{padding:18px}
    .service-card h3,.case-card h3,.article-card h3,.review h3,.pricing-card h3,.compare-card h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted);line-height:1.7}
    .pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .pill{padding:8px 10px;border-radius:999px;background:#f1f7ff;border:1px solid #d9e5f6;font-size:12px;color:#1f3b68;font-weight:600}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid #e2ebf8;position:relative}
    .step .num{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:12px}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid #dce5f1}
    th,td{padding:14px 12px;border-bottom:1px solid #e8eef6;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f6faff;color:#1e293b}
    tr:last-child td{border-bottom:none}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .good{background:#ecfdf5;color:#047857}
    .mid{background:#eff6ff;color:#1d4ed8}
    .warn{background:#fff7ed;color:#c2410c}
    .compare-card .score{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .score strong{font-size:32px;color:#0f766e}
    .score span{display:block;color:var(--muted);font-size:13px}
    .tags-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 12px;border-radius:14px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid #e2ebf8;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .timeline-item .t{font-weight:800;margin-bottom:8px}
    .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .pricing-card .amount{font-size:32px;font-weight:900;margin:10px 0;color:#0f172a}
    .pricing-card ul,.faq-item ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.75}
    details.faq-item{padding:0;overflow:hidden}
    details summary{list-style:none;cursor:pointer;padding:18px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-weight:800}
    details summary::-webkit-details-marker{display:none}
    details .faq-body{padding:0 18px 18px}
    .faq-icon{transition:transform .2s ease}
    details[open] .faq-icon{transform:rotate(45deg)}
    .review-grid .review{display:flex;flex-direction:column;gap:12px}
    .avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#dbeafe,#dcfce7);font-weight:900;color:#1e3a8a}
    .review-head{display:flex;align-items:center;gap:12px}
    .review small{color:var(--muted)}
    .news-list{display:grid;gap:12px}
    .news-item{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:16px;background:#f8fbff;border:1px solid #e2ebf8}
    .news-item span{color:var(--muted);font-size:13px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    input,select,textarea{
      width:100%;border:1px solid #d7e1ef;border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:.2s ease;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#7aa7ff;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:14px}
    footer{
      margin-top:18px;
      background:#0f172a;color:#e2e8f0;border-top:1px solid rgba(255,255,255,.08);
    }
    footer a{color:#c7d2fe}
    .footer-wrap{padding:26px 0}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .footer-card{padding:18px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08)}
    .footer-card h3{margin:0 0 10px}
    .footer-card p,.footer-card li{color:#cbd5e1;line-height:1.75}
    .footer-card ul{margin:0;padding-left:18px}
    .subfooter{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:16px;margin-top:16px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#cbd5e1}
    .float-box{
      position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px;
    }
    .float-box a,.float-box button{
      border:none;cursor:pointer;display:grid;place-items:center;width:48px;height:48px;border-radius:16px;
      background:linear-gradient(135deg,var(--brand),#3b82f6);color:#fff;box-shadow:var(--shadow2);
    }
    .float-box .secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .scroll-reveal.show{opacity:1;transform:none}
    .mobile-panel{display:none}
    .qrcode{display:flex;gap:14px;align-items:center}
    .qrcode img{width:120px;height:120px;object-fit:cover;border-radius:16px;border:1px solid #dce5f1;background:#fff}
    .divider{height:1px;background:linear-gradient(90deg,transparent,#dce5f1,transparent);margin:12px 0}
    @media (max-width: 980px){
      .hero-grid,.two-col,.service-grid,.case-grid,.review-grid,.article-grid,.faq-grid,.network-grid,.benefit-grid,.steps,.timeline,.price-grid,.footer-grid{grid-template-columns:1fr 1fr}
      .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
      .nav-links,.nav-actions .btn-ghost{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 0 10px}
      .mobile-panel .nav-links a{padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:12px}
      .mobile-panel .nav-actions{display:flex;flex-wrap:wrap}
    }
    @media (max-width: 720px){
      .hero-grid,.two-col,.service-grid,.case-grid,.review-grid,.article-grid,.faq-grid,.network-grid,.benefit-grid,.steps,.timeline,.price-grid,.footer-grid,.hero-points,.form-grid{grid-template-columns:1fr}
      .hero-copy,.hero-panel,.section-card{padding:20px}
      .section-head{flex-direction:column;align-items:flex-start}
      .hero-stats{grid-template-columns:1fr 1fr}
      .nav{min-height:68px}
      .brand .name span:last-child{display:none}
      .hero-cta,.form-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .qrcode{flex-direction:column;align-items:flex-start}
    }