:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f6ff;
      --text:#172033;
      --muted:#5d6b85;
      --line:#d8e2f0;
      --brand:#1b68ff;
      --brand-2:#0fd3c8;
      --accent:#ffb703;
      --shadow:0 16px 40px rgba(20, 44, 92, .10);
      --shadow-2:0 10px 24px rgba(20, 44, 92, .08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(27,104,255,.10), transparent 28%),
        radial-gradient(circle at 85% 0%, rgba(15,211,200,.12), transparent 24%),
        linear-gradient(180deg, #f7fbff 0%, #f4f8fd 52%, #f8fbff 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(140%) blur(14px);
      background:rgba(246,248,252,.82);
      border-bottom:1px solid rgba(216,226,240,.9);
    }
    .header-inner,.footer-inner,.topbar,.hero-grid,.grid-2,.grid-3,.grid-4,.brand-strip,.service-net,.review-grid,.article-grid,.feature-grid,.flow-grid,.compare-grid,.faq-grid,.footer-links{
      display:grid;
      gap:16px;
    }
    .topbar{
      grid-template-columns:auto 1fr auto;
      align-items:center;
      padding:12px 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:4px;box-shadow:var(--shadow-2)}
    .brand h1,.brand .brand-name{font-size:18px;line-height:1.1;margin:0;font-weight:800;letter-spacing:.2px}
    .brand small{display:block;color:var(--muted);font-weight:500;margin-top:4px}
    .nav-toggle{display:none}
    .nav{
      display:flex; flex-wrap:wrap; justify-content:center; gap:8px;
    }
    .nav a{
      padding:9px 12px; border:1px solid transparent; color:#32415d; border-radius:999px;
      font-size:14px; transition:.25s ease;
    }
    .nav a:hover,.nav a:focus{background:#fff;border-color:var(--line);box-shadow:var(--shadow-2);transform:translateY(-1px)}
    .header-cta{display:flex;gap:10px;align-items:center;justify-content:flex-end}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:none; cursor:pointer; border-radius:999px; padding:12px 18px; font-weight:700;
      transition:.25s ease; box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#3d8bff); color:#fff; box-shadow:0 12px 26px rgba(27,104,255,.24)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 34px rgba(27,104,255,.28)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
    .hero{
      padding:28px 0 10px;
    }
    .hero-grid{
      grid-template-columns:1.25fr .75fr;
      align-items:stretch;
    }
    .hero-card,.panel,.card,.review-card,.article-card,.faq-item,.form-card,.compare-card,.stat-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(216,226,240,.95);
      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:50%; filter:blur(10px); opacity:.55;
    }
    .hero-card:before{width:220px;height:220px;background:rgba(27,104,255,.12); right:-70px; top:-70px}
    .hero-card:after{width:180px;height:180px;background:rgba(15,211,200,.10); right:120px; bottom:-60px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 12px; border-radius:999px; background:linear-gradient(135deg,rgba(27,104,255,.1),rgba(15,211,200,.10));
      color:#1945a8; font-weight:700; font-size:13px; border:1px solid rgba(27,104,255,.12);
    }
    .hero h2{font-size:clamp(30px,5vw,54px); line-height:1.05; margin:18px 0 12px}
    .hero p{margin:0; color:var(--muted); font-size:16px; line-height:1.8}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .hero-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
    .chip{padding:8px 12px;border-radius:999px;background:#f2f7ff;border:1px solid var(--line);color:#38507a;font-size:13px;font-weight:600}
    .hero-side{display:grid;gap:16px}
    .stat-card{padding:20px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{
      background:linear-gradient(180deg,#f8fbff,#eef5ff);
      border:1px solid var(--line); border-radius:18px; padding:16px;
    }
    .stat strong{display:block;font-size:24px;margin-bottom:6px}
    .stat span{color:var(--muted);font-size:13px;line-height:1.5}
    .hero-aside{padding:20px}
    .hero-aside h3{margin:0 0 10px;font-size:18px}
    .hero-aside ul{padding:0;margin:0;list-style:none;display:grid;gap:12px}
    .hero-aside li{display:flex;gap:10px;color:#33435f;line-height:1.5}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-top:6px;flex:none}
    section{padding:24px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:16px}
    .section-head h3,.section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:760px;line-height:1.7}
    .grid-4{grid-template-columns:repeat(4,1fr)}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .grid-2{grid-template-columns:repeat(2,1fr)}
    .card{padding:22px}
    .card h4{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.7}
    .metric{font-size:30px;font-weight:900;color:var(--brand)}
    .metric-sub{color:var(--muted);font-size:13px}
    .service-badges,.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#314160;font-size:13px}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:90px 1fr;gap:12px;align-items:start;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .timeline-item strong{color:var(--brand)}
    .compare-wrap{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:820px;background:#fff;border-radius:18px;overflow:hidden;border:1px solid var(--line)}
    th,td{padding:15px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f3f7ff;font-size:14px}
    tr:last-child td{border-bottom:none}
    .highlight{background:linear-gradient(135deg,rgba(27,104,255,.08),rgba(15,211,200,.08))}
    .rating{display:flex;align-items:center;gap:8px;font-weight:700}
    .star{color:#ffad15}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;text-align:left;background:transparent;border:0;padding:18px 20px;font:inherit;font-weight:700;color:var(--text);cursor:pointer;
      display:flex;justify-content:space-between;align-items:center;gap:16px
    }
    .faq-a{padding:0 20px 18px;color:var(--muted);line-height:1.75;display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .faq-icon{transform:rotate(45deg)}
    .faq-icon{transition:.25s ease;font-size:20px;color:var(--brand)}
    .review-card{padding:20px}
    .review-meta{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:12px}
    .avatar{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#e5f0ff,#dffaf7);display:flex;align-items:center;justify-content:center;font-weight:800;color:#1a4fb5}
    .review-card p{margin:0;color:#42506a;line-height:1.8}
    .article-card{padding:0;overflow:hidden}
    .article-card .inner{padding:20px}
    .article-card h4{margin:0 0 10px}
    .article-card a{color:var(--brand);font-weight:700}
    .form-card{padding:22px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(27,104,255,.55);box-shadow:0 0 0 4px rgba(27,104,255,.10)}
    .footer{
      margin-top:20px;padding:26px 0 34px;border-top:1px solid rgba(216,226,240,.9);background:rgba(245,249,255,.92)
    }
    .footer-inner{grid-template-columns:1.1fr .9fr;align-items:start}
    .footer a{color:#244a9b}
    .footer p,.footer li{color:#42506a;line-height:1.8}
    .footer-links{grid-template-columns:repeat(2,1fr)}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      display:flex;align-items:center;justify-content:center; width:52px;height:52px;border-radius:16px;
      background:linear-gradient(135deg,var(--brand),#43a4ff);color:#fff;box-shadow:var(--shadow);font-weight:900
    }
    .float-btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--line)}
    .home-link{font-weight:800;color:var(--brand)}
    .media-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .media-row img,.wide-media img,.square-media img{width:100%;height:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-2)}
    .wide-media{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .square-media{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .scroll-x{overflow:auto}
    .mini-list{display:grid;gap:10px}
    .mini-list div{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
    .appear{opacity:0;transform:translateY(18px);transition: .55s ease}
    .appear.show{opacity:1;transform:none}
    @media (max-width: 1080px){
      .hero-grid,.footer-inner,.grid-4,.grid-3,.grid-2,.form-grid,.media-row,.wide-media,.square-media{grid-template-columns:1fr 1fr}
      .topbar{grid-template-columns:1fr;justify-items:start}
      .nav{justify-content:flex-start}
      .header-cta{justify-content:flex-start}
    }
    @media (max-width: 720px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero-card{padding:24px}
      .section-head{flex-direction:column;align-items:start}
      .hero-grid,.footer-inner,.grid-4,.grid-3,.grid-2,.form-grid,.media-row,.wide-media,.square-media{grid-template-columns:1fr}
      .nav{display:none; width:100%; padding:10px 0 2px}
      .nav.open{display:flex}
      .nav-toggle{display:inline-flex}
      .topbar{grid-template-columns:1fr auto;align-items:center}
      .header-cta{grid-column:1 / -1; flex-wrap:wrap}
      .timeline-item{grid-template-columns:1fr}
      table{min-width:720px}
    }