:root{
      --bg:#f4f7fb;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#132238;
      --muted:#5f6b7c;
      --line:#dce3ef;
      --brand:#2d6cff;
      --brand2:#7c4dff;
      --accent:#00d4ff;
      --shadow:0 14px 40px rgba(19,34,56,.08);
      --radius:20px;
      --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",sans-serif;background:radial-gradient(circle at top left,rgba(124,77,255,.12),transparent 28%),radial-gradient(circle at top right,rgba(0,212,255,.12),transparent 22%),linear-gradient(180deg,var(--bg),#fff 52%,#f7f9fd);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(244,247,251,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,227,239,.85)}
    .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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:6px;box-shadow:0 8px 24px rgba(45,108,255,.12)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#24324a;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a:focus{background:#fff;color:var(--brand);box-shadow:0 8px 20px rgba(45,108,255,.12)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .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;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(45,108,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    main{padding:24px 0 10px}
    section{padding:26px 0}
    .hero{padding-top:16px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
    .hero-panel{background:linear-gradient(135deg,rgba(255,255,255,.92),rgba(244,247,255,.88));border:1px solid rgba(255,255,255,.85);border-radius:28px;box-shadow:var(--shadow);padding:34px;position:relative;overflow:hidden}
    .hero-panel:before,.hero-panel:after{content:"";position:absolute;border-radius:999px;filter:blur(10px);opacity:.55}
    .hero-panel:before{width:170px;height:170px;right:-50px;top:-48px;background:radial-gradient(circle,rgba(0,212,255,.42),transparent 68%)}
    .hero-panel:after{width:220px;height:220px;left:-70px;bottom:-90px;background:radial-gradient(circle,rgba(124,77,255,.28),transparent 70%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(45,108,255,.08);color:var(--brand);border:1px solid rgba(45,108,255,.12);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,4.2vw,56px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:17px;line-height:1.8;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .point{background:rgba(255,255,255,.72);border:1px solid rgba(220,227,239,.85);border-radius:18px;padding:14px}
    .point b{display:block;font-size:18px;margin-bottom:4px}
    .point span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{display:grid;gap:14px}
    .glass-card{background:linear-gradient(180deg,rgba(17,34,56,.95),rgba(22,41,68,.96));color:#f5f8ff;border-radius:24px;padding:24px;box-shadow:0 18px 36px rgba(17,34,56,.22);position:relative;overflow:hidden}
    .glass-card:before{content:"";position:absolute;inset:auto -30px -40px auto;width:150px;height:150px;background:radial-gradient(circle,rgba(0,212,255,.26),transparent 70%)}
    .glass-card h2,.glass-card p,.glass-card li{color:#f5f8ff}
    .glass-card ul{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .glass-card li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.6}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.08);font-size:12px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{background:rgba(255,255,255,.9);border:1px solid rgba(220,227,239,.9);border-radius:22px;padding:22px;box-shadow:0 10px 28px rgba(19,34,56,.05);transition:.25s}
    .card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(19,34,56,.09)}
    .metric{font-size:30px;font-weight:900;margin:10px 0 6px}
    .muted{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#20304a}
    .timeline{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .step-num{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 10px 22px rgba(45,108,255,.18)}
    .compare{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f6f9ff;font-size:14px}
    tr:last-child td{border-bottom:none}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;right:18px;top:4px;font-size:58px;color:rgba(45,108,255,.14);font-family:serif}
    .stars{color:#ffb400;font-size:16px;letter-spacing:2px}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article-item{padding:18px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .article-item a{font-weight:700;color:#173156}
    .article-item p{margin:10px 0 0;color:var(--muted);line-height:1.7}
    .contact-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700}
    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}
    input:focus,select:focus,textarea:focus{border-color:rgba(45,108,255,.6);box-shadow:0 0 0 4px rgba(45,108,255,.1)}
    textarea{min-height:120px;resize:vertical}
    .footer{margin-top:8px;padding:28px 0 36px;border-top:1px solid var(--line);background:#f8fbff;color:#22324a}
    .footer a{color:#173156}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .small{font-size:13px;line-height:1.8;color:#516074}
    .mobile-hide{display:block}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border:none;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px rgba(45,108,255,.24);display:grid;place-items:center;cursor:pointer}
    .backtop{opacity:0;pointer-events:none;transform:translateY(6px);transition:.25s}
    .backtop.show{opacity:1;pointer-events:auto;transform:none}
    .section-surface{background:linear-gradient(180deg,rgba(255,255,255,.72),rgba(245,248,255,.88));border-top:1px solid rgba(220,227,239,.6);border-bottom:1px solid rgba(220,227,239,.6)}
    .image-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .image-row img,.split-images img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .split-images{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .mini-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .mini-list li{display:flex;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:14px}
    .nav-panel{display:none}
    .anchor{scroll-margin-top:92px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.reviews,.articles,.contact-wrap,.footer-grid,.image-row,.split-images{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head{align-items:start;flex-direction:column}
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .nav-panel{display:none;padding:0 0 14px}
      .nav-panel.open{display:block}
      .nav-panel a{display:block;padding:10px 0;color:#22324a;border-top:1px solid rgba(220,227,239,.75)}
      .mobile-hide{display:none}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,*::before,*::after{animation:none!important;transition:none!important}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}