:root{
    --bg:#ffffff; --bg-alt:#f5f7f9; --ink:#1c232c; --muted:#5d6875;
    --line:#dfe4ea; --accent:#2f6f88; --accent-soft:#eef4f7; --code:#f3f5f7;
  }
  *{box-sizing:border-box}
  body{margin:0;font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
  a{color:var(--accent)}
  .wrap{max-width:900px;margin:0 auto;padding:0 20px}
  header{border-bottom:1px solid var(--line)}
  .bar{display:flex;align-items:center;justify-content:space-between;padding:18px 0;flex-wrap:wrap;gap:12px}
  .logo{display:flex;align-items:center;gap:9px;font-weight:600;letter-spacing:-.01em;font-size:16px;text-decoration:none;color:var(--ink)}
  .logo svg{display:block}
  nav a{margin-left:20px;font-size:14px;text-decoration:none;color:var(--muted)}
  nav a:hover{color:var(--ink)}
  .hero{padding:56px 0 48px}
  h1{font-size:31px;line-height:1.25;margin:0 0 14px;letter-spacing:-.02em;max-width:19em}
  .lede{font-size:16.5px;color:var(--muted);margin:0 0 26px;max-width:38em}
  .btn{display:inline-block;padding:9px 17px;border-radius:6px;background:var(--accent);color:#fff;text-decoration:none;font-size:14px;font-weight:500}
  .btn.sec{background:transparent;color:var(--accent);border:1px solid var(--line);margin-left:8px}
  section{padding:40px 0;border-top:1px solid var(--line)}
  h2{font-size:19px;margin:0 0 6px;letter-spacing:-.01em}
  .sub{color:var(--muted);margin:0 0 24px;font-size:14.5px}
  .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px}
  .card h3{font-size:15px;margin:0 0 6px}
  .card p{margin:0;color:var(--muted);font-size:14px}
  pre{background:var(--code);border:1px solid var(--line);border-radius:7px;padding:14px 16px;overflow-x:auto;font-size:13px;line-height:1.55;margin:0}
  code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
  .two{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
  table{width:100%;border-collapse:collapse;font-size:14px}
  th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
  th{font-weight:600;color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.04em}
  td code{background:var(--accent-soft);padding:1px 5px;border-radius:3px;font-size:12.5px}
  footer{border-top:1px solid var(--line);padding:26px 0 40px;color:var(--muted);font-size:13.5px}
  footer a{color:var(--muted)}
  .foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
  @media (max-width:640px){.two{grid-template-columns:1fr}h1{font-size:25px}.hero{padding:38px 0 32px}}