:root{
      --bg:#f5fbff;
      --bg2:#ffffff;
      --card:#ffffff;
      --line:#d8e8f3;
      --text:#17324a;
      --muted:#5f7386;
      --brand:#0a84ff;
      --brand2:#00c2ff;
      --accent:#18c99a;
      --shadow:0 18px 50px rgba(17,61,102,.10);
      --radius:20px;
      --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:linear-gradient(180deg,#eef8ff 0%,#f8fcff 26%,#fff 100%);color:var(--text)}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar,.nav,.section,.footer{position:relative;z-index:1}
    .topbar{background:rgba(255,255,255,.72);backdrop-filter:blur(12px);border-bottom:1px solid rgba(216,232,243,.8)}
    .topbar .container{display:flex;justify-content:space-between;align-items:center;padding:10px 0;color:var(--muted);font-size:14px;gap:12px;flex-wrap:wrap}
    .brandline{display:flex;align-items:center;gap:12px}
    .brandline img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px}
    .nav{position:sticky;top:0;background:rgba(245,251,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,232,243,.85)}
    .nav .container{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .nav-brand{display:flex;align-items:center;gap:12px;min-width:0}
    .nav-brand strong{font-size:18px}
    .nav-menu{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-menu a:hover{background:#e9f5ff;color:#0a5fbf}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.adv-card,.flow-step,.price-card,.case-card,.timeline-item,.contact-box,.compare-card{background:var(--card);border:1px solid rgba(216,232,243,.95);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-main{padding:34px}
    .kicker{display:inline-flex;gap:8px;align-items:center;background:#e9f8ff;color:#0b77d0;border:1px solid #cfeeff;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(34px,5vw,54px);line-height:1.06;margin:18px 0 14px;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:13px 18px;font-weight:700;border:1px solid transparent;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 30px rgba(10,132,255,.24)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .mini-stat{padding:16px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fff,#f7fbff)}
    .mini-stat strong{display:block;font-size:22px;margin-bottom:4px}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .hero-side{padding:24px;display:grid;gap:14px}
    .side-badge{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 16px;border-radius:16px;background:linear-gradient(135deg,#f0fbff,#f7f1ff);border:1px solid #dbeeff}
    .side-badge b{font-size:16px}
    .side-list{display:grid;gap:10px}
    .side-list div{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px dashed #e1ecf4;font-size:14px}
    .section{padding:22px 0}
    .section h2{font-size:28px;margin:0 0 10px}
    .section .sub{margin:0 0 18px;color:var(--muted);line-height:1.75}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .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,.adv-card,.flow-step,.price-card,.case-card,.review,.article,.contact-box,.compare-card,.panel,.timeline-item{padding:20px}
    .card h3,.adv-card h3,.flow-step h3,.price-card h3,.case-card h3,.review h3,.article h3,.contact-box h3,.compare-card h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 12px;border-radius:999px;background:#f0f8ff;border:1px solid #d9ebf8;color:#20557a;font-size:13px}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:flex;gap:14px;align-items:flex-start}
    .dot{width:12px;height:12px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 0 0 6px rgba(10,132,255,.09)}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid #e8eef4;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f5fbff;color:#16324a}
    .rating{display:grid;gap:12px}
    .stars{color:#f6b400;font-size:22px;letter-spacing:2px}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;padding:18px 20px}
    .faq-q strong{font-size:16px}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 20px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:18px}
    .faq-item.open .faq-icon{transform:rotate(45deg)}
    .faq-icon{transition:.25s;font-size:22px;color:var(--brand)}
    .form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    input,select,textarea{width:100%;border:1px solid #cfe0ec;border-radius:14px;background:#fff;color:var(--text);padding:13px 14px;font:inherit;outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#74baff;box-shadow:0 0 0 4px rgba(10,132,255,.1)}
    .footer{margin-top:10px;background:#0c2033;color:#d8e7f3}
    .footer a{color:#8dd4ff}
    .footer .container{padding:28px 0}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer h3{margin:0 0 12px;color:#fff}
    .footer p,.footer li{color:#c7d7e4;line-height:1.8}
    .footer ul{margin:0;padding-left:18px}
    .fixed-actions{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:20}
    .fixed-actions a,.fixed-actions button{width:48px;height:48px;border:none;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 30px rgba(10,132,255,.25);cursor:pointer}
    .floating-chat{position:fixed;left:16px;bottom:16px;z-index:20}
    .floating-chat .chat-card{display:none;width:280px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:16px;margin-bottom:10px}
    .floating-chat.open .chat-card{display:block}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:8px 10px;border-radius:999px;background:#eef7ff;border:1px solid #d6e9f8;font-size:13px;color:#20557a}
    .img-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .img-grid img,.hero-side img{border-radius:18px;border:1px solid var(--line);background:#fff}
    .compare-card{display:grid;gap:12px}
    .compare-card .score{font-size:40px;font-weight:800;color:#0a7bdc}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article time{color:#7a8ea0;font-size:13px}
    .service-map{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .service-map .pill{justify-content:center;display:flex}
    .subtle{font-size:13px;color:#6b7f91}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid,.reviews,.articles,.img-grid,.service-map{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-menu{display:none;width:100%;padding-top:10px}
      .nav-menu.show{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
      .nav .container{flex-wrap:wrap}
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid,.reviews,.articles,.img-grid,.service-map,.form-grid{grid-template-columns:1fr}
      .section h2{font-size:24px}
      .hero-main,.hero-side,.card,.adv-card,.flow-step,.price-card,.case-card,.review,.article,.contact-box,.compare-card,.panel,.timeline-item{padding:18px}
      .mobile-only{display:block}
    }
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.visible{opacity:1;transform:none}