:root{
      --bg:#f6f8fc;
      --surface:#ffffff;
      --surface-2:#f1f5ff;
      --text:#162033;
      --muted:#5d6a84;
      --line:#d9e2f2;
      --primary:#3d63ff;
      --primary-2:#00c2ff;
      --accent:#7a5cff;
      --accent-2:#00d4a6;
      --shadow:0 18px 50px rgba(35, 63, 137, .12);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      background:
        radial-gradient(circle at top left, rgba(61,99,255,.12), transparent 24%),
        radial-gradient(circle at top right, rgba(0,194,255,.10), transparent 22%),
        linear-gradient(180deg, #f8fbff 0%, #f4f7fd 36%, #eef3fb 100%);
      color:var(--text);
      line-height:1.7;
    }
    a{color:var(--primary);text-decoration:none}
    a:hover{color:#2747d8}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header, main, footer{position:relative; z-index:1}
    .topbar{
      position:sticky; top:0; z-index:30;
      backdrop-filter: blur(16px);
      background:rgba(246,248,252,.78);
      border-bottom:1px solid rgba(217,226,242,.75);
    }
    .nav{
      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;box-shadow:0 8px 20px rgba(26,44,91,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1rem;line-height:1.2}
    .brand-text span{display:block;font-size:.86rem;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:14px;padding:10px 12px;font-size:.95rem}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:var(--text);padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:rgba(61,99,255,.08)}
    .hero{
      padding:42px 0 30px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.15fr .85fr; gap:22px; align-items:stretch;
    }
    .hero-main{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(61,99,255,.98), rgba(122,92,255,.95) 48%, rgba(0,194,255,.92));
      color:#fff;
      box-shadow:0 22px 60px rgba(61,99,255,.22);
      padding:34px;
      min-height:420px;
    }
    .hero-main::before,.hero-main::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      background:rgba(255,255,255,.12); filter:blur(2px);
    }
    .hero-main::before{width:180px;height:180px;right:-40px;top:-30px}
    .hero-main::after{width:280px;height:280px;left:-110px;bottom:-140px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.14);font-size:.92rem}
    h1{margin:16px 0 14px;font-size:clamp(2rem, 5vw, 3.6rem);line-height:1.1;letter-spacing:-.02em}
    .hero-main p{margin:0;max-width:62ch;font-size:1.02rem;color:rgba(255,255,255,.92)}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 18px; border-radius:14px; border:1px solid transparent;
      font-weight:700; cursor:pointer; transition:.25s ease;
    }
    .btn-primary{background:#fff;color:var(--primary)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 12px 28px rgba(255,255,255,.18)}
    .btn-ghost{background:rgba(255,255,255,.12); color:#fff; border-color:rgba(255,255,255,.2)}
    .btn-ghost:hover{transform:translateY(-2px); background:rgba(255,255,255,.18)}
    .hero-points{
      margin-top:26px;
      display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:12px;
    }
    .point{
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      border-radius:18px; padding:14px;
    }
    .point strong{display:block;font-size:1.05rem}
    .point span{display:block;font-size:.88rem;color:rgba(255,255,255,.82)}
    .hero-side{
      display:grid; gap:16px;
    }
    .info-card,.service-card,.panel,.review-card,.case-card,.faq-item,.article-card,.timeline-item,.pricing-card,.compare-card,.form-card,.help-card,.metric-card{
      background:var(--surface);
      border:1px solid rgba(217,226,242,.95);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .info-card{padding:20px}
    .info-card h2,.section-title h2{margin:0 0 10px;font-size:1.5rem}
    .section{padding:18px 0 10px}
    .section-title{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
    .section-title p{margin:0;color:var(--muted);max-width:70ch}
    .metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .metric-card{padding:20px}
    .metric-card strong{display:block;font-size:1.45rem;margin-bottom:4px}
    .metric-card span{color:var(--muted);font-size:.95rem}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .service-card,.case-card,.review-card,.article-card,.help-card,.pricing-card,.compare-card,.form-card{padding:20px}
    .service-card h3,.case-card h3,.review-card h3,.article-card h3,.help-card h3,.pricing-card h3,.compare-card h3{margin:0 0 8px;font-size:1.08rem}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:linear-gradient(135deg,#eef3ff,#f8fbff);border:1px solid var(--line);font-size:.92rem;color:#304160}
    .feature-list,.bullet-list{margin:0;padding-left:18px;color:var(--muted)}
    .feature-list li,.bullet-list li{margin:8px 0}
    .split{
      display:grid; grid-template-columns:1fr 1fr; gap:18px; align-items:start;
    }
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{
      padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#f7faff);border:1px solid var(--line);
    }
    .step b{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:rgba(61,99,255,.12);color:var(--primary);margin-bottom:10px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #ecf1fa;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#24324d}
    .rating{display:grid;grid-template-columns:1fr;gap:14px}
    .scorebox{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:18px;border-radius:18px;background:linear-gradient(135deg,#f2f6ff,#eefcfb);border:1px solid #d8e8ff}
    .scorebox strong{font-size:1.6rem;color:#20304d}
    details{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    summary{list-style:none;cursor:pointer;padding:16px 18px;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0;padding:0 18px 18px;color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-card p{color:var(--muted);margin:10px 0 0}
    .review-meta{display:flex;justify-content:space-between;gap:10px;align-items:center}
    .avatar{
      width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#3d63ff,#00c2ff);color:#fff;display:grid;place-items:center;font-weight:800
    }
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article-card p,.case-card p,.help-card p{color:var(--muted);margin:0 0 12px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:block;font-size:.92rem;font-weight:700;margin:0 0 8px;color:#23324e}
    input,select,textarea{
      width:100%; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:14px; padding:12px 14px; font:inherit; outline:none;
    }
    textarea{min-height:132px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#86a9ff; box-shadow:0 0 0 4px rgba(61,99,255,.08)}
    .footer{
      margin-top:22px;
      padding:24px 0 28px;
      background:#0f1a31;
      color:#dbe6ff;
    }
    .footer a{color:#8fd3ff}
    .footer-top{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer small,.footer p{color:#b9c6e2}
    .footer .tag{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.08);color:#d9e6ff}
    .float-box{
      position:fixed; right:16px; bottom:16px; z-index:50;
      display:flex; flex-direction:column; gap:10px;
    }
    .float-btn{
      display:flex; align-items:center; gap:10px; padding:12px 14px; border-radius:16px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      color:#fff; box-shadow:0 14px 30px rgba(61,99,255,.28); font-weight:700;
    }
    .backtop{background:#fff;color:var(--text);border:1px solid var(--line)}
    .floating-card{
      position:fixed; left:16px; bottom:16px; z-index:50; width:min(280px, calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:14px;display:none
    }
    .floating-card.show{display:block}
    .floating-card img{border-radius:14px;margin-top:10px}
    .animate{opacity:0; transform:translateY(18px); transition:.6s ease}
    .animate.in{opacity:1; transform:none}
    .mini{font-size:.9rem;color:var(--muted)}
    .two-col-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .pill{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef4ff;color:#29406f;font-size:.9rem}
    .timeline{display:grid;gap:12px}
    .timeline-item{padding:16px 18px}
    .timeline-item strong{display:block;margin-bottom:4px}
    .networks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .network{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f4f8ff);border:1px solid var(--line)}
    @media (max-width: 980px){
      .hero-grid,.metrics,.grid-3,.split,.steps,.reviews,.article-list,.footer-top,.faq-grid,.form-grid,.networks{grid-template-columns:1fr}
      .hero-main{min-height:auto}
      .hero-points{grid-template-columns:1fr}
      .nav-toggle{display:inline-flex}
      .nav-links{display:none; width:100%; padding:10px 0 4px}
      .nav-links.open{display:flex; flex-direction:column; align-items:flex-start; gap:6px}
      .nav{flex-wrap:wrap}
      .section-title{flex-direction:column;align-items:flex-start}
      .two-col-list{grid-template-columns:1fr}
    }