:root{
      --bg:#f6fbff;
      --panel:#ffffff;
      --card:#ffffff;
      --ink:#0f172a;
      --muted:#51617a;
      --line:#dbe7f5;
      --brand:#1d4ed8;
      --brand2:#38bdf8;
      --brandSoft:#eaf5ff;
      --shadow:0 18px 55px rgba(2,6,23,.10);
      --radius:18px;
      --radius2:24px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html,body{margin:0;padding:0}
    body{
      font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,"Noto Sans",sans-serif;
      background:
        radial-gradient(1200px 500px at 10% -10%, rgba(56,189,248,.20), transparent 55%),
        radial-gradient(900px 500px at 90% 0%, rgba(29,78,216,.15), transparent 50%),
        var(--bg);
      color:var(--ink);
      line-height:1.6;
    }
    a{color:var(--brand);text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:var(--max);margin:0 auto;padding:24px}
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:14px;
      padding:12px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.75);
      backdrop-filter: blur(10px);
    }
    .brand{display:flex;align-items:center;gap:10px;font-weight:800}
    .dot{width:10px;height:10px;border-radius:99px;background:linear-gradient(135deg,var(--brand),var(--brand2))}
    .nav{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
    .nav a{color:var(--muted)}
    .hero{
      margin-top:18px;
      border:1px solid var(--line);
      border-radius:var(--radius2);
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.75));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .heroGrid{display:grid;grid-template-columns: 1.2fr .8fr;gap:0}
    .heroLeft{padding:28px 26px}
    .kicker{
      display:inline-flex;align-items:center;gap:8px;
      padding:6px 10px;border-radius:999px;
      background:var(--brandSoft);
      border:1px solid var(--line);
      font-size:12px;color:#164e63;font-weight:700;
    }
    .h1{
      font-family:"Playfair Display",serif;
      font-size:40px;line-height:1.12;margin:12px 0 10px;
      letter-spacing:-.3px;
    }
    .lead{font-size:16px;color:var(--muted);margin:0 0 18px}
    .heroMeta{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
    .pill{
      font-size:12px;color:var(--muted);
      border:1px solid var(--line);
      background:#fff;
      padding:6px 10px;border-radius:999px;
    }
    .ctaRow{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      padding:12px 14px;border-radius:14px;border:1px solid var(--line);
      font-weight:800;font-size:14px;
      transition:.18s transform ease, .18s box-shadow ease, .18s background ease;
      user-select:none;
    }
    .btnPrimary{
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;border-color:transparent;
      box-shadow:0 12px 28px rgba(29,78,216,.20);
    }
    .btnPrimary:hover{transform:translateY(-1px);text-decoration:none}
    .btnGhost{background:#fff;color:var(--ink)}
    .btnGhost:hover{transform:translateY(-1px);text-decoration:none}
    .heroRight{
      padding:18px;
      border-left:1px solid var(--line);
      background:
        radial-gradient(700px 300px at 40% 0%, rgba(56,189,248,.25), transparent 60%),
        linear-gradient(180deg, rgba(234,245,255,.60), rgba(255,255,255,.85));
    }
    .figure{
      border:1px solid var(--line);
      border-radius:18px;
      background:#fff;
      overflow:hidden;
      box-shadow:0 10px 30px rgba(2,6,23,.08);
    }
    .cap{padding:10px 12px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}

    /* ✅ 关键修复：防止图片变形 */
    .media{
      width:100%;
      height:auto;
      display:block;
      max-width:100%;
    }
    /* 如果未来想统一卡片高度且不变形，用 cover 但可能裁切；默认不用 */
    /* .mediaCover{width:100%;height:240px;object-fit:cover;display:block} */

    .grid{margin-top:20px;display:grid;grid-template-columns: 1fr 1fr 1fr;gap:14px}
    .card{border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.92);box-shadow:0 14px 40px rgba(2,6,23,.08);padding:16px}
    .card h3{margin:0 0 6px;font-size:15px}
    .card p{margin:0;color:var(--muted);font-size:13px}
    main{margin-top:18px;display:grid;grid-template-columns: 1fr 340px;gap:18px;align-items:start}
    .article{border:1px solid var(--line);border-radius:var(--radius2);background:rgba(255,255,255,.92);box-shadow:var(--shadow);padding:22px}
    .article h2{margin:20px 0 10px;font-size:22px;letter-spacing:-.2px}
    .article h3{margin:14px 0 8px;font-size:17px}
    .article p{margin:10px 0;color:var(--ink)}
    .article ul{margin:10px 0 10px 20px}
    .article li{margin:6px 0;color:var(--ink)}
    .note{
      border:1px dashed rgba(29,78,216,.35);
      background:linear-gradient(180deg, rgba(234,245,255,.9), rgba(255,255,255,.9));
      border-radius:16px;
      padding:14px;
      color:var(--muted);
      font-size:13px;
    }
    .tableWrap{overflow:auto;border-radius:16px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:720px}
    th,td{padding:12px 12px;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:rgba(234,245,255,.7);text-align:left;font-size:13px}
    td{font-size:13px;color:var(--ink)}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:6px 10px;border-radius:999px;
      border:1px solid var(--line);
      background:var(--brandSoft);
      color:#0f3b66;font-weight:800;font-size:12px;
      white-space:nowrap;
    }
    .sidebar{position:sticky;top:18px;display:flex;flex-direction:column;gap:14px}
    .sideCard{border:1px solid var(--line);border-radius:var(--radius2);background:rgba(255,255,255,.92);box-shadow:0 14px 40px rgba(2,6,23,.08);padding:16px}
    .sideTitle{font-weight:900;margin:0 0 8px}
    .toc a{display:block;padding:8px 10px;border-radius:12px;color:var(--muted);border:1px solid transparent}
    .toc a:hover{background:rgba(234,245,255,.75);border-color:var(--line);text-decoration:none;color:var(--ink)}
    .sideCta{display:grid;gap:10px;margin-top:10px}
    .mini{border:1px solid var(--line);border-radius:16px;background:#fff;padding:12px;color:var(--muted);font-size:13px}
    .faq{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}
    details{border:1px solid var(--line);border-radius:16px;background:#fff;padding:12px;margin:10px 0}
    summary{cursor:pointer;font-weight:800}
    details p{margin:8px 0 0;color:var(--muted);font-size:13px}
    footer{margin:24px 0 8px;color:var(--muted);font-size:12px;text-align:center}
    .stickyBar{
      position:fixed;left:0;right:0;bottom:0;
      background:rgba(255,255,255,.92);
      border-top:1px solid var(--line);
      backdrop-filter: blur(10px);
      padding:10px 14px;
      z-index:30;
    }
    .stickyInner{max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
    .stickyText{font-size:13px;color:var(--muted)}
    @media (max-width: 980px){
      .heroGrid{grid-template-columns: 1fr}
      .heroRight{border-left:none;border-top:1px solid var(--line)}
      main{grid-template-columns: 1fr}
      .sidebar{position:relative;top:auto}
      .grid{grid-template-columns:1fr}
      .h1{font-size:34px}
      .stickyText{display:none}
      table{min-width:640px}
    }