:root{--bg:#f4f8ff;--bg2:#eef4ff;--card:#ffffff;--line:#dce7fb;--text:#10203a;--muted:#5c6b86;--primary:#1362ff;--primary2:#0b45bf;--accent:#00b4ff;--shadow:0 20px 50px rgba(15,59,140,.10);--radius:20px;--max:1200px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:linear-gradient(180deg,#ffffff 0%,var(--bg) 100%)}
    a{color:var(--primary);text-decoration:none}img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(244,248,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,231,251,.9)}
    .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 .name{font-weight:800;font-size:18px;letter-spacing:.5px}
    .brand .sub{font-size:12px;color:var(--muted)}
    .logo-wrap{width:44px;height:44px;border-radius:14px;background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;padding:6px;border:1px solid var(--line)}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .navlinks a{font-size:14px;color:var(--text);opacity:.9}
    .navlinks a:hover,.navlinks a:focus{color:var(--primary)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#2d8cff);color:#fff;box-shadow:0 12px 30px rgba(19,98,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);background:linear-gradient(135deg,#0f56eb,#1c7bff)}
    .btn-ghost{background:#fff;color:var(--primary2);border:1px solid var(--line)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#b8cbf3;box-shadow:var(--shadow)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:30px 0 18px;background:
      radial-gradient(circle at 20% 20%, rgba(19,98,255,.12), transparent 24%),
      radial-gradient(circle at 86% 16%, rgba(0,180,255,.12), transparent 18%),
      linear-gradient(180deg,#fafdff 0%,#eef5ff 100%)}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-card,.info-card,.section-card,.quote-card,.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:30px;position:relative;overflow:hidden}
    .hero-card:before{content:"";position:absolute;inset:auto -40px -40px auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(19,98,255,.18),transparent 68%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eaf2ff;color:var(--primary2);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,5vw,54px);line-height:1.08;letter-spacing:-.5px}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .chip{padding:10px 12px;border-radius:999px;background:#f6f9ff;border:1px solid var(--line);font-size:13px;color:#29476b}
    .hero-side{display:grid;gap:14px}
    .mini-panel{padding:20px}
    .mini-panel h3,.section-head h2{margin:0 0 10px;font-size:22px}
    .mini-panel p,.card p,.quote-card p,.faq-item p,.article-card p,.timeline p,.price-item p,.table-wrap td,.table-wrap th{color:var(--muted);line-height:1.7}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:18px 0 0}
    .stat{padding:20px}
    .stat strong{display:block;font-size:28px;line-height:1;color:var(--primary2)}
    .stat span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
    section{padding:18px 0}
    .section-card{padding:26px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}
    .section-head .desc{max-width:70ch;color:var(--muted);line-height:1.8;margin:0}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{background:#eef5ff;border:1px solid #d8e5fb;color:#27476c;border-radius:999px;padding:9px 12px;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative;padding:20px 18px 18px}
    .step .num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#54a0ff);color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid #edf2fb;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#173155;font-size:14px}
    .high{color:var(--primary2);font-weight:700}
    .accordion{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
    .faq-q{width:100%;padding:16px 18px;background:#fff;border:none;color:var(--text);font-size:16px;font-weight:700;text-align:left;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:0 18px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:16px}
    .faq-q span{color:var(--primary)}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote-card{padding:20px}
    .quote-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
    .stars{color:#ffb300;letter-spacing:2px}
    .article-card{padding:18px}
    .article-card .date{font-size:13px;color:var(--muted);margin-bottom:10px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{display:flex;flex-direction:column;gap:8px}
    input,select,textarea{width:100%;border:1px solid #d6e2f5;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:#86b3ff;box-shadow:0 0 0 4px rgba(19,98,255,.08)}
    textarea{min-height:130px;resize:vertical}
    .footer{padding:26px 0 30px;background:#0f1d36;color:#d8e4f9;margin-top:10px}
    .footer a{color:#9ec2ff}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:18px}
    .footer .section-card{background:transparent;border-color:rgba(255,255,255,.12);box-shadow:none;padding:0}
    .footer .section-card p,.footer .section-card li,.footer .section-card span{color:#c8d6f0}
    .contact-lines{display:grid;gap:10px}
    .kefu{display:flex;gap:14px;align-items:center}
    .kefu img{width:108px;height:108px;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.14);background:#fff}
    .float{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float a,.float button{width:54px;height:54px;border:none;border-radius:16px;display:grid;place-items:center;box-shadow:0 14px 30px rgba(15,45,102,.18);cursor:pointer}
    .float a{background:linear-gradient(135deg,var(--primary),#49a0ff);color:#fff}
    .float button{background:#fff;color:var(--primary2);border:1px solid var(--line)}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.timeline,.reviews,.articles,.footer-grid,.stats,.form-grid{grid-template-columns:1fr 1fr}
      .hero-grid{grid-template-columns:1fr}
    }
    @media (max-width: 720px){
      .navlinks,.nav-actions .btn-ghost{display:none}
      .menu-btn,.mobile-only{display:inline-flex}
      .stats,.grid-3,.grid-4,.timeline,.reviews,.articles,.footer-grid,.form-grid{grid-template-columns:1fr}
      .hero-card,.section-card{padding:20px}
      .section-head{flex-direction:column;align-items:flex-start}
      .nav{padding:12px 0}
      .brand .sub{display:none}
      .hero{padding-top:22px}
      .hero-actions .btn{width:100%}
      .float{right:12px;bottom:12px}
    }