:root {
  --bg: #f6f7f9; --panel: #ffffff; --border: #e3e7ec; --text: #1c2430;
  --text-2: #45505f; --muted: #79838f; --accent: #4f46e5;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased; line-height: 1.6;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }
.brand { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; }
.brand .dot { color: var(--accent); }
.nav { display: flex; gap: 18px; flex-wrap: wrap; margin: 18px 0 30px; font-size: 14px; }
.nav a { color: var(--text-2); text-decoration: none; }
.nav a:hover, .nav a.active { color: var(--accent); }
.doc { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 36px 40px; }
h1 { font-size: 26px; margin: 0 0 6px; letter-spacing: -0.02em; }
.updated { color: var(--muted); font-size: 13px; margin: 0 0 28px; }
h2 { font-size: 18px; margin: 32px 0 10px; }
h3 { font-size: 15px; margin: 22px 0 6px; }
p, li { font-size: 14.5px; color: var(--text-2); }
a { color: var(--accent); }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 12px; border: 1px solid var(--border); vertical-align: top; }
th { background: #f1f3f6; color: var(--text); font-weight: 600; }
.note { background: #fdf6e9; border: 1px solid #f0dcb4; color: #8a5a00; border-radius: 10px;
  padding: 12px 16px; font-size: 13.5px; margin: 18px 0; }
.placeholder { background: #eef0fe; color: #3730a3; padding: 0 4px; border-radius: 4px; font-weight: 600; }
footer { color: var(--muted); font-size: 12.5px; margin-top: 30px; text-align: center; }