:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#fff7ef;
      --text:#1f2a37;
      --muted:#5b6472;
      --line:#e8edf5;
      --brand:#2d6cff;
      --brand-2:#ff7b4a;
      --brand-3:#19c37d;
      --shadow:0 18px 45px rgba(22,35,73,.10);
      --radius:20px;
      --radius-sm:14px;
      --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:linear-gradient(180deg,#f9fbff 0%,#f6f8fc 42%,#eef3ff 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}
    header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(232,237,245,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 22px rgba(45,108,255,.12)}
    .brand h1{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:#334155;font-size:14px;font-weight:600;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a:focus-visible{background:#eef4ff;color:#2049c9}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.22s;line-height:1}
    .btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#6d5efc 100%);color:#fff;box-shadow:0 12px 24px rgba(45,108,255,.26)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(45,108,255,.30)}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#cdd8f7}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    main{padding-bottom:14px}
    section{scroll-margin-top:92px}
    .hero{padding:42px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-copy{position:relative;overflow:hidden;background:linear-gradient(135deg,#ffffff 0%,#f6faff 55%,#fff3ea 100%);border:1px solid #e8effc;border-radius:28px;padding:34px;box-shadow:var(--shadow)}
    .hero-copy:before,.hero-copy:after{content:"";position:absolute;border-radius:999px;filter:blur(2px);pointer-events:none}
    .hero-copy:before{width:180px;height:180px;background:radial-gradient(circle,rgba(45,108,255,.14),transparent 70%);top:-40px;right:-30px}
    .hero-copy:after{width:140px;height:140px;background:radial-gradient(circle,rgba(255,123,74,.16),transparent 72%);bottom:-28px;right:160px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:#2147b3;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    .hero h2{margin:18px 0 12px;font-size:clamp(30px,4vw,54px);line-height:1.05;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini-card{background:rgba(255,255,255,.85);border:1px solid rgba(232,237,245,.95);border-radius:18px;padding:14px}
    .mini-card strong{display:block;font-size:18px}
    .mini-card span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .side-card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .side-card h3,.section-title h3{margin:0 0 8px;font-size:22px}
    .section-title p,.side-card p{margin:0;color:var(--muted);line-height:1.7}
    .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
    .stat{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 10px 26px rgba(22,35,73,.06)}
    .stat b{display:block;font-size:28px;line-height:1;color:#17305f}
    .stat small{display:block;color:var(--muted);margin-top:8px;line-height:1.5}
    .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}
    .section{padding:24px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title .tag{color:#d14b00;background:#fff0e8;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700;white-space:nowrap}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 30px rgba(19,32,61,.06);transition:transform .22s ease,box-shadow .22s ease,border-color .22s}
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(19,32,61,.10);border-color:#d7e2f7}
    .card h4{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .pill-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .pill{padding:8px 12px;border-radius:999px;background:#f3f7ff;color:#2347a6;font-size:13px;font-weight:600}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:80px 1fr;gap:14px;align-items:start;background:linear-gradient(180deg,#fff 0%,#fbfcff 100%);border:1px solid var(--line);border-radius:20px;padding:18px}
    .step-no{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#2d6cff,#6f62ff);color:#fff;font-weight:800;font-size:18px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:16px 18px;border-bottom:1px solid #edf1f8;text-align:left;vertical-align:top}
    th{background:#f7f9ff;color:#1e2c4b;font-size:14px}
    td{color:#334155;line-height:1.65}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border-radius:999px;background:#eef8f3;color:#13744c;font-size:13px;font-weight:700}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:0 10px 28px rgba(19,32,61,.05)}
    details+details{margin-top:12px}
    summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700;color:#17233f}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 18px;color:var(--muted);line-height:1.75}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .stars{color:#ff9f2a;font-size:18px;letter-spacing:1px}
    .review b{font-size:16px}
    .review span{color:var(--muted);font-size:13px}
    .news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .news-item{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line)}
    .news-item a{font-weight:700;color:#17305f}
    .news-item p{margin:8px 0 0;color:var(--muted);line-height:1.7}
    .form-wrap{display:grid;grid-template-columns:1fr .78fr;gap:16px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:7px}
    label{font-weight:700;color:#1f2a37;font-size:14px}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid #dbe3f1;background:#fff;color:var(--text);font:inherit;outline:none;transition:border-color .2s,box-shadow .2s}
    input:focus,select:focus,textarea:focus{border-color:#86a7ff;box-shadow:0 0 0 4px rgba(45,108,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:50px;height:50px;border-radius:16px;background:linear-gradient(135deg,#2d6cff,#ff7b4a);color:#fff;box-shadow:0 14px 26px rgba(45,108,255,.24)}
    .float-btn.secondary{background:#fff;color:#21324d;border:1px solid var(--line)}
    footer{margin-top:18px;background:#101a2d;color:#d8e1f3}
    footer a{color:#a9c4ff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:18px;padding:28px 0}
    .footer-grid h4{margin:0 0 12px;font-size:16px;color:#fff}
    .footer-grid p,.footer-grid li{margin:0;color:#c7d2e5;line-height:1.8}
    .footer-grid ul{padding:0;margin:0;list-style:none}
    .copyright{border-top:1px solid rgba(255,255,255,.1);padding:14px 0;color:#aac0dc;font-size:13px}
    .logo-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
    .logo-row img{width:48px;height:48px;object-fit:contain;border-radius:12px;background:#fff;padding:4px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud a{display:inline-flex;padding:8px 11px;border-radius:999px;background:#f4f7ff;color:#2147b3;font-size:13px;font-weight:600}
    .service-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .service-card{padding:18px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line);border-radius:20px}
    .service-card b{display:block;margin-bottom:8px}
    .compare-score{display:grid;grid-template-columns:1fr .8fr;gap:16px}
    .scorebox{background:linear-gradient(135deg,#fff 0%,#edf4ff 100%);border:1px solid #d9e5ff;border-radius:24px;padding:22px}
    .scorebox .big{font-size:42px;font-weight:900;color:#17305f}
    .mobile-toggle{display:none}
    @media (max-width: 1024px){
      .hero-grid,.form-wrap,.compare-score,.footer-grid,.grid-3,.reviews,.news-list,.service-grid,.grid-2,.stats{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-toggle{display:block}
      .hero{padding-top:18px}
      .hero-grid,.form-wrap,.compare-score,.footer-grid,.grid-3,.reviews,.news-list,.service-grid,.grid-2,.stats{grid-template-columns:1fr}
      .hero-copy{padding:22px}
      .section-title{flex-direction:column;align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .menu-panel{display:none;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:12px}
      .menu-panel.open{display:block}
      .menu-panel a{display:block;padding:10px 8px;border-radius:10px;color:#23314a;font-weight:600}
      .menu-panel a:hover{background:#eff4ff}
    }
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
    .reveal.show{opacity:1;transform:translateY(0)}