:root{
      --bg:#f6f8fc;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#132033;
      --muted:#5e6b7f;
      --line:#dbe3f0;
      --brand:#315efb;
      --brand2:#7b61ff;
      --accent:#00c2ff;
      --warm:#ffb547;
      --shadow:0 18px 40px rgba(18,34,66,.10);
      --shadow2:0 10px 22px rgba(49,94,251,.12);
      --radius:18px;
      --radius2:24px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(123,97,255,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(0,194,255,.10), transparent 24%),
        linear-gradient(180deg, #f9fbff 0%, #f4f7fc 48%, #f7f9fd 100%);
      line-height:1.7;
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter:saturate(160%) blur(16px);
      background:rgba(246,248,252,.88);
      border-bottom:1px solid rgba(219,227,240,.7);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      min-height:74px;
    }
    .brand{
      display:flex; align-items:center; gap:12px; min-width:0;
      font-weight:800; color:#0e1c31;
    }
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand strong{font-size:18px; letter-spacing:.3px}
    .brand small{display:block; font-size:12px; color:var(--muted); font-weight:600}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{color:var(--text); font-size:14px; font-weight:700; padding:8px 10px; border-radius:12px}
    .nav-links a:hover{background:rgba(49,94,251,.08); color:var(--brand)}
    .nav-cta{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:800; font-size:14px; transition:.22s ease; cursor:pointer;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2)); color:#fff; box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 14px 30px rgba(49,94,251,.22)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn-ghost:hover{border-color:#b8c6e6; transform:translateY(-1px)}
    .menu-btn{display:none; background:#fff; border:1px solid var(--line); border-radius:14px; width:44px; height:44px}
    .menu-btn span{display:block; width:18px; height:2px; background:#22314d; margin:4px auto; border-radius:2px}
    .hero{
      padding:34px 0 22px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.25fr .75fr; gap:22px; align-items:stretch;
    }
    .hero-main{
      position:relative;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(21,38,77,.96), rgba(25,54,122,.90) 48%, rgba(72,49,184,.92));
      border-radius:28px;
      padding:30px;
      color:#fff;
      box-shadow:0 24px 50px rgba(31,56,114,.22);
      min-height:420px;
    }
    .hero-main::before,
    .hero-main::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      background:radial-gradient(circle, rgba(0,194,255,.35), transparent 60%);
      filter:blur(6px);
    }
    .hero-main::before{width:220px;height:220px;right:-60px;top:-60px}
    .hero-main::after{width:160px;height:160px;left:-40px;bottom:-40px; background:radial-gradient(circle, rgba(123,97,255,.42), transparent 60%)}
    .hero-kicker{
      display:inline-flex; align-items:center; gap:8px;
      background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.16);
      color:#eaf2ff; padding:8px 12px; border-radius:999px; font-size:13px; font-weight:700;
    }
    h1{margin:.9rem 0 .8rem; font-size:clamp(30px, 5vw, 54px); line-height:1.12; letter-spacing:-.6px}
    .hero-desc{margin:0; max-width:58ch; color:#d6e2ff; font-size:16px}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .hero-meta{
      display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:22px;
    }
    .hero-stat{
      background:rgba(255,255,255,.10); border:1px solid rgba(255,255,255,.12);
      border-radius:18px; padding:16px; min-height:98px;
      backdrop-filter: blur(8px);
    }
    .hero-stat strong{display:block; font-size:22px; margin-bottom:5px}
    .hero-stat span{color:#dfe8ff; font-size:13px}
    .hero-side{
      display:grid; gap:14px;
    }
    .side-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(219,227,240,.9);
      border-radius:22px;
      box-shadow:var(--shadow);
      padding:20px;
    }
    .side-card h2, .section h2{
      margin:0 0 10px; font-size:clamp(22px, 3vw, 32px); line-height:1.16;
    }
    .side-card p, .section p.lead{margin:0; color:var(--muted)}
    .mini-grid{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:14px}
    .mini{
      background:linear-gradient(180deg,#fff,#f5f8ff);
      border:1px solid var(--line); border-radius:16px; padding:14px;
    }
    .mini strong{display:block; font-size:18px}
    .mini span{color:var(--muted); font-size:12px}
    .section{padding:18px 0}
    .section-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(219,227,240,.95);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:26px;
    }
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:18px}
    .section-head .lead{max-width:72ch}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .metric, .service, .case, .review, .article, .faq-item, .timeline-item{
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      padding:18px;
      box-shadow:0 10px 20px rgba(17,36,76,.05);
      transition:.22s ease;
    }
    .metric:hover, .service:hover, .case:hover, .review:hover, .article:hover{transform:translateY(-3px); box-shadow:var(--shadow)}
    .metric strong{display:block; font-size:24px; color:#152845}
    .metric span{color:var(--muted); font-size:13px}
    .tags{display:flex; flex-wrap:wrap; gap:10px}
    .tag{
      padding:9px 12px; border-radius:999px; background:linear-gradient(180deg,#fff,#f2f6ff);
      border:1px solid var(--line); color:#20314e; font-weight:700; font-size:13px;
    }
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .service h3, .case h3, .review h3, .article h3, .timeline-item h3, .faq-item summary, .compare th{margin:0 0 8px; font-size:18px}
    .service p, .case p, .review p, .article p, .timeline-item p{margin:0; color:var(--muted)}
    .steps{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px}
    .step{
      position:relative; background:linear-gradient(180deg,#fff,#f6f9ff); border:1px solid var(--line);
      border-radius:22px; padding:18px;
    }
    .step .num{
      width:38px; height:38px; border-radius:50%; display:grid; place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--accent)); color:#fff; font-weight:900; margin-bottom:14px;
    }
    .compare-wrap{overflow:auto; border-radius:22px; border:1px solid var(--line); background:#fff}
    table.compare{width:100%; border-collapse:collapse; min-width:760px}
    .compare th,.compare td{padding:15px 14px; border-bottom:1px solid #eef2f7; text-align:left; vertical-align:top}
    .compare th{background:#f7faff; color:#14233d}
    .compare tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex; align-items:center; gap:6px; padding:7px 11px; border-radius:999px;
      background:rgba(49,94,251,.08); color:#2b4dcf; font-size:13px; font-weight:800;
    }
    .flex-two{display:grid; grid-template-columns:1.05fr .95fr; gap:14px}
    .pricing{
      display:grid; gap:12px; margin-top:10px;
    }
    .price-row{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      padding:14px 16px; border-radius:16px; background:#f8fbff; border:1px solid var(--line);
    }
    .faq-list{display:grid; gap:12px}
    .faq-item{padding:0; overflow:hidden}
    .faq-item summary{
      list-style:none; cursor:pointer; padding:18px 18px 18px 54px; position:relative; font-weight:800;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::before{
      content:"+"; position:absolute; left:18px; top:16px; width:24px; height:24px; border-radius:8px;
      display:grid; place-items:center; background:rgba(49,94,251,.10); color:var(--brand); font-size:18px; font-weight:900;
    }
    .faq-item[open] summary::before{content:"–"}
    .faq-item .answer{padding:0 18px 18px 54px; color:var(--muted)}
    .timeline{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .contact-grid{display:grid; grid-template-columns:1fr .85fr; gap:14px}
    form{
      display:grid; gap:12px;
    }
    .field-row{display:grid; grid-template-columns:1fr 1fr; gap:12px}
    label{display:block; font-size:13px; font-weight:800; margin-bottom:6px; color:#22314d}
    input, select, textarea{
      width:100%; padding:13px 14px; border-radius:14px; border:1px solid #cfd9ea;
      background:#fff; color:#132033; font:inherit; outline:none;
    }
    input:focus, select:focus, textarea:focus{border-color:#6e8cff; box-shadow:0 0 0 4px rgba(49,94,251,.10)}
    textarea{min-height:122px; resize:vertical}
    .contact-card{
      background:linear-gradient(180deg,#f8fbff,#fff);
      border:1px solid var(--line); border-radius:24px; padding:20px;
    }
    .contact-card .qrcode{
      display:flex; gap:14px; align-items:center; margin-top:14px; flex-wrap:wrap;
    }
    .contact-card img{border-radius:14px; border:1px solid var(--line)}
    .reviews, .cases, .articles{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .footer{
      margin-top:18px;
      background:#0f1f3a;
      color:#e8efff;
      padding:26px 0 18px;
    }
    .footer a{color:#a9c0ff}
    .footer-top{
      display:grid; grid-template-columns:1.05fr .95fr; gap:18px; align-items:start;
    }
    .footer .logo-line{display:flex; align-items:center; gap:12px; margin-bottom:12px}
    .footer .logo-line img{width:42px;height:42px;object-fit:contain}
    .footer .columns{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .footer small, .footer p{color:#c9d6f6}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{
      background:rgba(255,255,255,.06); padding:8px 12px; border-radius:999px; border:1px solid rgba(255,255,255,.10)
    }
    .subfooter{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      margin-top:18px; padding-top:14px; border-top:1px solid rgba(255,255,255,.10);
      color:#b9c9ef; font-size:13px;
    }
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:70; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:50%; display:grid; place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2)); color:#fff; box-shadow:var(--shadow2);
      border:none; cursor:pointer;
    }
    .float-panel{
      position:fixed; right:16px; bottom:82px; z-index:71; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow);
      padding:16px; display:none;
    }
    .float-panel.show{display:block}
    .float-panel h3{margin:0 0 8px}
    .float-panel p{margin:0 0 12px; color:var(--muted)}
    .article-list{display:grid; gap:12px}
    .article-item{display:flex; justify-content:space-between; gap:12px; padding:14px 16px; border-radius:16px; background:#fff; border:1px solid var(--line)}
    .article-item span{color:var(--muted); font-size:13px}
    .scroll-x{overflow:auto}
    .reveal{opacity:0; transform:translateY(16px); transition:.6s ease}
    .reveal.in{opacity:1; transform:none}
    .home-link{font-weight:800}
    @media (max-width: 980px){
      .hero-grid,.flex-two,.contact-grid,.footer-top{grid-template-columns:1fr}
      .grid-4,.grid-3,.steps,.reviews,.cases,.articles,.timeline,.footer .columns{grid-template-columns:1fr 1fr}
      .hero-main{min-height:auto}
      .nav-links{display:none; position:absolute; left:16px; right:16px; top:74px; background:#fff; border:1px solid var(--line); border-radius:18px; padding:12px; box-shadow:var(--shadow); flex-direction:column; align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .menu-btn{display:inline-grid; place-items:center}
      .nav{position:relative}
      .field-row{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero{padding-top:18px}
      .hero-main,.section-card,.side-card,.contact-card{padding:18px}
      .hero-meta,.grid-4,.grid-3,.steps,.reviews,.cases,.articles,.timeline,.footer .columns{grid-template-columns:1fr}
      .hero-actions{flex-direction:column}
      .hero-actions .btn{width:100%}
      .section-head{flex-direction:column; align-items:flex-start}
      .subfooter{flex-direction:column; align-items:flex-start}
    }