:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-soft:#f0f5ff;
      --text:#162033;
      --muted:#5d687f;
      --line:#dbe4f2;
      --primary:#185cff;
      --secondary:#ff5f6d;
      --accent:#17b26a;
      --accent2:#7b61ff;
      --warn:#f59e0b;
      --shadow:0 18px 50px rgba(16, 34, 66, .10);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{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;
      background:
        radial-gradient(circle at top left, rgba(24,92,255,.08), transparent 28%),
        radial-gradient(circle at top right, rgba(255,95,109,.08), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #f6f8fc 28%, #f4f7fd 100%);
      color:var(--text);
    }
    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: blur(16px);
      background:rgba(246,248,252,.78);
      border-bottom:1px solid rgba(219,228,242,.8);
    }
    .header-inner{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;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav a{font-size:14px;color:var(--muted);padding:8px 0;position:relative}
    .nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--primary);transition:.25s}
    .nav a:hover{color:var(--text)}
    .nav a:hover::after{width:100%}
    .home-link{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#4f8cff);color:#fff;font-weight:700;box-shadow:0 12px 24px rgba(24,92,255,.22)}
    .hero{padding:32px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.review-card,.faq-item,.stat-card,.service-card,.case-card,.article-card,.price-card,.process-card,.compare-card,.timeline-card,.form-card{background:rgba(255,255,255,.92);border:1px solid rgba(219,228,242,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.75}
    .hero-main::before{width:220px;height:220px;right:-50px;top:-50px;background:radial-gradient(circle, rgba(255,95,109,.26), transparent 68%)}
    .hero-main::after{width:180px;height:180px;left:-40px;bottom:-70px;background:radial-gradient(circle, rgba(24,92,255,.18), transparent 68%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef4ff;color:#214ecf;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4.2vw,52px);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:62ch}
    .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:none;border-radius:14px;padding:13px 18px;font-weight:700;cursor:pointer;transition:.25s}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#22a7f0);color:#fff;box-shadow:0 14px 28px rgba(24,92,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(16,34,66,.12)}
    .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .chip{padding:8px 12px;border-radius:999px;background:#f3f7ff;border:1px solid #dbe6ff;color:#3250a8;font-size:13px}
    .hero-side{padding:24px}
    .hero-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat-card{padding:16px;background:linear-gradient(180deg,#fff, #f7faff)}
    .stat-card strong{display:block;font-size:26px}
    .stat-card span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.5}
    .section{padding:20px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .section-card,.service-card,.case-card,.article-card,.price-card,.review-card,.compare-card,.process-card,.timeline-card,.form-card{padding:22px}
    .service-card h3,.case-card h3,.article-card h3,.price-card h3,.review-card h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.85}
    .service-card ul,.check-list,.bullet-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .check-list li,.bullet-list li{padding-left:22px;position:relative;color:var(--text);line-height:1.75}
    .check-list li::before,.bullet-list li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--secondary),var(--primary));box-shadow:0 0 0 4px rgba(24,92,255,.08)}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7faff);border:1px solid var(--line)}
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;background:#eef4ff;color:#234ed7;font-weight:800;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .compare-wrap{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{border-bottom:1px solid var(--line);padding:14px 12px;text-align:left;vertical-align:top}
    th{background:#f3f7ff;color:#23304a}
    .tagrow{display:flex;flex-wrap:wrap;gap:10px}
    .tagrow .chip{background:#fff}
    .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .timeline-card .time{color:#214ecf;font-weight:800;margin-bottom:8px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;border:none;background:transparent;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--text);font-weight:700;font-size:16px;cursor:pointer;text-align:left}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px;color:var(--muted)}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .faq-icon{flex:0 0 auto;width:28px;height:28px;border-radius:999px;background:#eef4ff;color:#2a54d5;display:grid;place-items:center}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card .role{color:#214ecf;font-size:13px;font-weight:700;margin-bottom:10px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .gallery img,.case-media img{border-radius:18px;border:1px solid var(--line);background:#fff}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:18px;padding:16px 18px;border:1px solid var(--line);border-radius:16px;background:#fbfcff}
    .article-item strong{display:block;margin-bottom:6px}
    .article-item span{color:var(--muted);font-size:14px;line-height:1.7}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px 14px;font:inherit;color:var(--text);
      outline:none;transition:.2s;
    }
    textarea{min-height:118px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#7da3ff;box-shadow:0 0 0 4px rgba(24,92,255,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:14px}
    .footer{margin-top:18px;padding:24px 0 30px;background:#10192c;color:#d9e3f8}
    .footer .container{width:min(var(--container), calc(100% - 32px))}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:start}
    .footer a{color:#fff}
    .footer .muted{color:#b9c6e0}
    .contact-box{display:grid;grid-template-columns:140px 1fr;gap:16px;align-items:center}
    .qr{width:140px;height:140px;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.16);background:#fff}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:16px;border:none;background:linear-gradient(135deg,var(--secondary),var(--primary));color:#fff;font-size:12px;display:grid;place-items:center;box-shadow:0 14px 26px rgba(24,92,255,.24);cursor:pointer}
    .backtop{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s}
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.workflow,.timeline,.reviews,.footer-grid,.split{grid-template-columns:1fr}
      .grid-3{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 768px){
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:8px}
      .nav.show{display:flex}
      .header-inner{position:relative}
      .hero-main,.hero-side,.section-card,.service-card,.case-card,.article-card,.price-card,.review-card,.compare-card,.process-card,.timeline-card,.form-card{padding:18px}
      .grid-3,.gallery,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .contact-box{grid-template-columns:1fr}
      .qr{width:120px;height:120px}
      h1{font-size:32px}
    }