:root{
      --bg:#f5f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#17304a;
      --muted:#5c6f86;
      --line:#d9e4f3;
      --primary:#1565d8;
      --primary2:#0b4fb5;
      --accent:#00a3ff;
      --warm:#ffb84d;
      --shadow:0 16px 40px rgba(18,56,108,.10);
      --shadow2:0 10px 24px rgba(18,56,108,.08);
      --radius:22px;
      --radius2:16px;
      --container: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;
      color:var(--text);
      background:
        radial-gradient(1200px 500px at 10% -10%, rgba(21,101,216,.13), transparent 60%),
        radial-gradient(900px 420px at 100% 8%, rgba(0,163,255,.12), transparent 50%),
        linear-gradient(180deg, #fbfdff 0%, #f5f8fc 28%, #f3f7fc 100%);
      line-height:1.65;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(14px);background:rgba(245,248,252,.82);border-bottom:1px solid rgba(217,228,243,.8)}
    .topbar{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:42px;height:42px;object-fit:contain}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:#27445f;padding:8px 10px;border-radius:999px;transition:.25s ease}
    nav a:hover{background:rgba(21,101,216,.08);color:var(--primary)}
    .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:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 26px rgba(21,101,216,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(21,101,216,.28)}
    .btn-soft{background:#fff;border-color:var(--line);color:var(--primary)}
    .btn-soft:hover{border-color:#bcd0ea;transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);color:var(--text);padding:10px 14px;border-radius:12px}
    .hero{padding:34px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.section-card,.info-card,.quote-card,.faq-item,.form-card,.review-card,.case-card,.article-card,.service-card,.compare-card,.timeline-card,.table-card{background:var(--card);border:1px solid rgba(217,228,243,.92);box-shadow:var(--shadow2);border-radius:var(--radius)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(21,101,216,.08);color:var(--primary);font-weight:700;font-size:13px}
    h1{font-size:clamp(32px,4.2vw,54px);line-height:1.08;margin:16px 0 16px;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .point{padding:14px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#eef5ff);border:1px solid #dbe7f6}
    .point strong{display:block;font-size:16px}
    .point span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .hero-panel{padding:22px;display:grid;gap:14px;position:relative;overflow:hidden}
    .hero-panel::before{content:"";position:absolute;inset:-40px -20px auto auto;width:180px;height:180px;background:radial-gradient(circle, rgba(0,163,255,.16), transparent 68%);pointer-events:none}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:16px;border-radius:18px;background:linear-gradient(180deg,#ffffff,#f7fbff);border:1px solid #dbe7f6}
    .metric .num{font-size:28px;font-weight:800;color:var(--primary)}
    .metric .label{font-size:13px;color:var(--muted)}
    .mini-feed{display:grid;gap:10px}
    .mini-feed .line{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:14px;background:#f8fbff;border:1px solid #e1ebf8;color:#26435c}
    .mini-feed .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:6px;flex:0 0 auto}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{font-size:clamp(24px,3vw,34px);margin:0;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .section-card{padding:24px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .service-card,.case-card,.review-card,.article-card,.faq-item,.compare-card,.timeline-card,.table-card{padding:20px}
    .icon-badge{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(21,101,216,.12),rgba(0,163,255,.16));color:var(--primary);font-size:20px;margin-bottom:14px}
    .service-card h3,.case-card h3,.review-card h3,.article-card h3,.compare-card h3,.timeline-card h3{margin:0 0 10px;font-size:18px}
    .service-card p,.case-card p,.review-card p,.article-card p,.compare-card p,.timeline-card p{margin:0;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dfe8f4;color:#27445f;font-size:13px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:#28455f}
    .list li::before{content:"";width:9px;height:9px;border-radius:50%;margin-top:7px;background:linear-gradient(135deg,var(--primary),var(--accent));flex:0 0 auto}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:86px 1fr;gap:14px;align-items:start;padding:14px;border-radius:18px;background:#f8fbff;border:1px solid #dbe7f6}
    .timeline-item .time{font-weight:800;color:var(--primary)}
    .compare-wrap{overflow:auto;border-radius:18px;border:1px solid #dbe7f6}
    table{width:100%;border-collapse:collapse;min-width:820px;background:#fff}
    th,td{padding:15px 14px;text-align:left;border-bottom:1px solid #e6eef7;vertical-align:top}
    th{background:#f4f8fe;color:#1b3552;font-size:14px}
    td{color:#32506d;font-size:14px}
    .highlight{background:linear-gradient(180deg,#f7fbff,#edf5ff)}
    .rating{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}
    .stars{color:#ffb84d;font-size:18px;letter-spacing:2px}
    .form-card form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-weight:700;font-size:14px;color:#243f59}
    input,select,textarea{
      width:100%;border:1px solid #cfdced;border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(21,101,216,.55);box-shadow:0 0 0 4px rgba(21,101,216,.09)}
    textarea{min-height:124px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
    .fine{font-size:13px;color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;background:transparent;border:none;color:var(--text);font:inherit;font-weight:700;text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;border-top:1px solid transparent}
    .faq-item.active .faq-a{max-height:220px;padding:0 20px 18px;color:var(--muted);border-top-color:#e7eef7}
    .faq-mark{width:28px;height:28px;border-radius:999px;display:grid;place-items:center;background:rgba(21,101,216,.08);color:var(--primary);flex:0 0 auto}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .role{font-size:13px;color:var(--primary);font-weight:700;background:rgba(21,101,216,.08);padding:6px 10px;border-radius:999px}
    .reviews .review-card{display:grid;gap:10px}
    .article-card time{display:inline-block;font-size:12px;color:var(--primary);font-weight:700;margin-bottom:8px}
    .footer{margin-top:18px;padding:24px 0 28px;background:#eaf2fb;border-top:1px solid #d9e4f3;color:#22405c}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .footer a{color:#194f98}
    .footer small{color:#45617b}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;background:#fff;border:1px solid #d9e4f3;border-radius:999px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 16px 30px rgba(21,101,216,.25);border:none;cursor:pointer}
    .float-panel{
      position:fixed;right:16px;bottom:78px;z-index:60;width:min(320px, calc(100vw - 32px));
      background:#fff;border:1px solid #d9e4f3;border-radius:20px;box-shadow:var(--shadow);padding:16px;display:none
    }
    .float-panel.open{display:block}
    .float-panel h3{margin:0 0 10px}
    .float-panel .qr{border-radius:18px;overflow:hidden;border:1px solid #e4edf8;margin:10px 0}
    .float-panel .qr img{width:100%;height:auto}
    .backtop{position:fixed;left:16px;bottom:16px;z-index:60;opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s ease}
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .fade-up{opacity:0;transform:translateY(18px);transition:all .55s ease}
    .fade-up.in-view{opacity:1;transform:translateY(0)}
    .subtle-line{height:1px;background:linear-gradient(90deg,transparent,rgba(21,101,216,.2),transparent);margin:18px 0}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .hero-badges span{font-size:12px;padding:8px 10px;border-radius:999px;background:rgba(255,184,77,.13);color:#8a5600;border:1px solid rgba(255,184,77,.22)}
    .mini-logos{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
    .mini-logos div{padding:12px;border-radius:16px;background:#f8fbff;border:1px solid #dbe7f6;color:#25425e;text-align:center;font-size:13px}
    .service-network{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .network-item{padding:14px;border-radius:16px;background:#fff;border:1px solid #dce6f2;color:#2b4660;text-align:center}
    .case-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .case-media{border-radius:18px;overflow:hidden;border:1px solid #dbe7f6;background:#f8fbff}
    .case-media img{width:100%;height:auto;display:block}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{padding:20px;border-radius:20px;background:linear-gradient(180deg,#fff,#f6fbff);border:1px solid #dce6f2}
    .price strong{display:block;font-size:28px;color:var(--primary);margin:10px 0}
    .center-note{padding:14px 16px;border-radius:16px;background:rgba(21,101,216,.07);border:1px solid rgba(21,101,216,.14);color:#29506f}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.split,.footer-grid,.case-gallery,.price-grid,.service-network{grid-template-columns:1fr 1fr}
      .service-network{grid-template-columns:repeat(3,1fr)}
    }
    @media (max-width: 768px){
      .container{width:min(var(--container), calc(100% - 24px))}
      nav{display:none}
      .menu-btn{display:inline-flex}
      .hero{padding-top:18px}
      .hero-grid,.grid-4,.grid-3,.split,.footer-grid,.case-gallery,.price-grid,.service-network,.form-grid,.hero-points{grid-template-columns:1fr}
      .hero-copy,.hero-panel,.section-card{padding:20px}
      .topbar{padding:12px 0}
      .mobile-nav{display:none;flex-direction:column;gap:8px;padding:0 0 14px}
      .mobile-nav.open{display:flex}
      .mobile-nav a{padding:10px 12px;border-radius:12px;background:#fff;border:1px solid var(--line)}
      .timeline-item{grid-template-columns:1fr}
    }