:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#132033;
      --muted:#5f6b7c;
      --line:#d9e3f0;
      --brand:#2f6bff;
      --brand2:#14b8a6;
      --accent:#ffb020;
      --shadow:0 16px 40px rgba(32, 56, 112, .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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(47,107,255,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(20,184,166,.10), transparent 24%),
        linear-gradient(180deg, #fdfefe 0%, var(--bg) 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter: blur(14px);
      background: rgba(246,248,252,.86);
      border-bottom:1px solid rgba(217,227,240,.8);
    }
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;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;border:1px solid var(--line);padding:6px;box-shadow:0 8px 20px rgba(47,107,255,.08)}
    .brand-name{font-weight:800;font-size:18px;letter-spacing:.4px}
    .brand-sub{font-size:12px;color:var(--muted);margin-top:2px}
    .nav-wrap{display:flex;align-items:center;gap:14px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:12px;padding:10px 12px;font-weight:700
    }
    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:-2px;width:100%;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));
      transform:scaleX(0);transform-origin:left;transition:transform .25s ease
    }
    nav a:hover{color:var(--text)}
    nav a:hover::after{transform:scaleX(1)}
    .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;transition:.25s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5b8cff);color:#fff;box-shadow:0 12px 28px rgba(47,107,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(47,107,255,.26)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:#b8c7df;transform:translateY(-1px)}
    main{overflow:hidden}
    .hero{padding:36px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.section-card,.faq-item,.testimonial,.form-card,.price-card,.compare-card,.timeline-item{
      background:var(--card);border:1px solid rgba(217,227,240,.95);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-copy{padding:32px;position:relative;overflow:hidden}
    .hero-copy::before{
      content:"";position:absolute;inset:auto -90px -90px auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(47,107,255,.16), transparent 68%)
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#2456d6;background:#eef4ff;border:1px solid #d9e6ff;padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
    .metric{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line)}
    .metric strong{display:block;font-size:22px;color:var(--text)}
    .metric span{font-size:13px;color:var(--muted)}
    .hero-panel{padding:22px;background:linear-gradient(180deg,#fbfdff,#eef5ff)}
    .panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
    .panel-title h2{margin:0;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#29405f;box-shadow:0 6px 16px rgba(28,52,108,.05)}
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
    .mini-box{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini-box b{display:block;font-size:15px;margin-bottom:4px}
    .mini-box p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{padding:20px}
    .card h3{margin:10px 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .icon{
      width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,rgba(47,107,255,.13),rgba(20,184,166,.12));
      display:grid;place-items:center;color:var(--brand);font-weight:900
    }
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:20px;background:#fff;border:1px solid var(--line);border-radius:18px;position:relative}
    .step span{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:50%;background:#eef4ff;color:#2456d6;font-weight:800;margin-bottom:12px}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f6f9ff;color:#1f3557;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    tr:last-child td{border-bottom:none}
    .rating{font-size:15px;font-weight:800;color:#0f7b4e}
    .compare-card .rating-box{display:flex;align-items:center;gap:12px;margin-top:8px}
    .stars{color:#ffad31;font-size:18px;letter-spacing:2px}
    .price-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{padding:22px}
    .price-card .price{font-size:30px;font-weight:900;color:#15335f;margin:8px 0}
    .price-card ul{margin:14px 0 0;padding-left:18px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .case img{border-radius:14px;margin-bottom:14px;aspect-ratio:16/10;object-fit:cover}
    .articles{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .article-list{display:grid;gap:10px}
    .article-list a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);color:#27415f}
    .article-list a:hover{border-color:#b8c7df;transform:translateY(-1px)}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;padding:18px 20px;border:none;background:#fff;color:var(--text);font:inherit;font-weight:800;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease}
    .faq-item.open .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75}
    .testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .testimonial{padding:20px}
    .testimonial .role{font-size:13px;color:#2456d6;font-weight:700}
    .testimonial p{color:var(--muted);line-height:1.75}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline-item{padding:18px}
    .timeline-item b{display:block;margin-bottom:8px}
    .timeline-item p{margin:0;color:var(--muted);line-height:1.7}
    .form-card{padding:22px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:grid;gap:8px;font-size:14px;font-weight:700;color:#22334d}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#8fb0ff;box-shadow:0 0 0 4px rgba(47,107,255,.10)}
    .contact-grid{display:grid;grid-template-columns:1fr .9fr;gap:16px;align-items:start}
    .contact-card{padding:22px}
    .contact-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .contact-list li{padding:12px 14px;border-radius:14px;background:#f7faff;border:1px solid var(--line);color:#29405f}
    footer{
      margin-top:18px;background:#eef4ff;border-top:1px solid #d9e3f0;color:#16304d
    }
    .footer-inner{padding:24px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px}
    .footer-links a{color:#24456e}
    .footer-copy{font-size:13px;color:#4f627a;line-height:1.8;margin-top:10px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:70;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);
      box-shadow:0 12px 28px rgba(34,57,105,.14);color:var(--text);font-weight:900
    }
    .float-btn.primary{background:linear-gradient(135deg,var(--brand),#5e89ff);color:#fff}
    .reveal{opacity:0;transform:translateY(18px);transition:all .6s ease}
    .reveal.visible{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.process,.price-list,.case-grid,.testimonials,.timeline,.contact-grid,.articles,.footer-inner{grid-template-columns:1fr}
      nav{display:none}
      nav.open{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:14px 0}
      .nav-toggle{display:inline-flex}
      .topbar{align-items:flex-start}
      .hero-metrics{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
    }