:root{
      --bg:#f5f7fb;
      --panel:#ffffff;
      --panel-2:#eef3ff;
      --text:#172033;
      --muted:#60708b;
      --line:#dbe3f0;
      --brand:#6a5cff;
      --brand-2:#23b7d6;
      --accent:#f4a261;
      --shadow:0 18px 50px rgba(23,32,51,.08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:
      radial-gradient(circle at top left, rgba(106,92,255,.12), transparent 28%),
      radial-gradient(circle at 80% 0%, rgba(35,183,214,.12), transparent 25%),
      linear-gradient(180deg,#fbfcff 0%, #f4f7fc 48%, #f7f9fe 100%);
      color:var(--text);}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px));margin:0 auto}
    header,main,footer{width:100%}
    .topbar{position:sticky;top:0;z-index:30;background:rgba(251,252,255,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,227,240,.8)}
    .nav{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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 24px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)}
    .navlinks{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .navlinks a{padding:9px 12px;border-radius:999px;color:var(--muted);font-size:14px}
    .navlinks a:hover,.navlinks a.active{background:linear-gradient(135deg, rgba(106,92,255,.12), rgba(35,183,214,.12));color:var(--text)}
    .home-btn{padding:10px 16px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff !important;box-shadow:0 12px 24px rgba(106,92,255,.22)}
    .hero{padding:42px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-card,.info-card,.panel,.review,.case,.faq-item,.article,.form-card,.compare,.stat,.step,.service-card,.price-card,.mini-card,.timeline-item{background:rgba(255,255,255,.92);border:1px solid rgba(219,227,240,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:34px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.7}
    .hero-card:before{width:220px;height:220px;background:radial-gradient(circle, rgba(106,92,255,.18), transparent 68%);top:-50px;right:-40px}
    .hero-card:after{width:180px;height:180px;background:radial-gradient(circle, rgba(35,183,214,.16), transparent 68%);bottom:-40px;left:-30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(106,92,255,.1);color:#4a43c7;font-weight:600;font-size:13px}
    h1{margin:16px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.06;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:12px 18px;font-weight:700;border:1px solid transparent;transition:.2s ease}
    .btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 28px rgba(106,92,255,.18)}
    .btn.secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .meta{padding:14px;border-radius:18px;background:linear-gradient(180deg,rgba(106,92,255,.08),rgba(35,183,214,.04));border:1px solid rgba(106,92,255,.12)}
    .meta strong{display:block;font-size:18px}
    .meta span{color:var(--muted);font-size:13px}
    .side-stack{display:grid;gap:16px}
    .panel{padding:22px}
    .panel h2,.section-title{margin:0 0 10px;font-size:24px}
    .panel p,.panel li,.section-desc{color:var(--muted);line-height:1.8}
    .panel ul{margin:14px 0 0;padding-left:18px}
    .stats{padding:12px 0 24px}
    .stat-grid,.service-grid,.case-grid,.review-grid,.article-grid,.price-grid,.step-grid,.timeline-grid,.network-grid,.mini-grid,.compare-grid{display:grid;gap:16px}
    .stat-grid{grid-template-columns:repeat(4,1fr)}
    .stat{padding:20px}
    .stat strong{display:block;font-size:28px}
    .stat span{color:var(--muted)}
    section{padding:24px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-desc{max-width:72ch;margin:0}
    .service-grid{grid-template-columns:repeat(3,1fr)}
    .service-card,.case,.review,.article,.faq-item,.form-card,.compare,.price-card,.step,.timeline-item,.mini-card{padding:22px}
    .service-card h3,.case h3,.review h3,.article h3,.faq-item summary,.price-card h3,.step h3,.timeline-item h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#33415e;font-size:13px}
    .step-grid{grid-template-columns:repeat(4,1fr)}
    .step .num{display:inline-flex;width:36px;height:36px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(106,92,255,.12),rgba(35,183,214,.12));font-weight:800;margin-bottom:12px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
    th,td{padding:14px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{color:#24304a;background:#f8faff}
    .score{font-size:32px;font-weight:900;color:#1b2540}
    .faq details{border-top:1px solid var(--line);padding:14px 0}
    .faq details:first-child{border-top:none}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:10px 0 0;color:var(--muted);line-height:1.8}
    .review-grid{grid-template-columns:repeat(3,1fr)}
    .review .role{color:#4a43c7;font-size:13px;font-weight:700}
    .case-grid,.article-grid{grid-template-columns:repeat(3,1fr)}
    .case .thumb{aspect-ratio:16/10;border-radius:16px;background:linear-gradient(135deg, rgba(106,92,255,.14), rgba(35,183,214,.1));margin-bottom:14px;overflow:hidden}
    .case .thumb img{width:100%;height:100%;object-fit:cover}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field input,.field select,.field textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit}
    .field textarea{min-height:118px;resize:vertical}
    .full{grid-column:1/-1}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:16px}
    .footer{padding:24px 0 34px;border-top:1px solid var(--line);color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer a{color:#24304a}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px}
    .tool{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 28px rgba(106,92,255,.22)}
    .tool.light{background:#fff;color:var(--text);border:1px solid var(--line)}
    .accordion-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:0 22px}
    .timeline-grid{grid-template-columns:repeat(3,1fr)}
    .timeline-item{position:relative}
    .timeline-item:before{content:"";position:absolute;left:22px;top:22px;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
    .timeline-item{padding-left:42px}
    .network-grid{grid-template-columns:repeat(4,1fr)}
    .mini-grid{grid-template-columns:repeat(2,1fr)}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 960px){
      .hero-grid,.stat-grid,.service-grid,.step-grid,.review-grid,.case-grid,.article-grid,.footer-grid,.timeline-grid,.network-grid{grid-template-columns:1fr}
      .navlinks{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px;box-shadow:0 12px 30px rgba(0,0,0,.06)}
      .navlinks.open{display:flex;flex-direction:column;align-items:flex-start}
      .menu-btn{display:inline-flex}
      .hero-card{padding:24px}
      .hero-meta,.form-grid,.mini-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }