:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #616e7c;
  --border: #e1e4e8;
  --accent: #1f6feb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --surface: #161b22;
    --text: #e6edf3;
    --muted: #9aa5b1;
    --border: #30363d;
    --accent: #58a6ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Arial, Helvetica, sans-serif;
  line-height: 1.65;
  font-size: 16px;
}

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px clamp(16px, 4vw, 40px);
}

h1 { font-size: 26px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 28px 0 8px; }
p, li { font-size: 15px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 8px; border: 1px solid var(--border); }
.meta { color: var(--muted); font-size: 13px; margin: 0 0 20px; }
.back { display: inline-block; margin-bottom: 16px; color: var(--accent); text-decoration: none; font-size: 14px; }
.fill { background: #fff3bf; color: #5c4400; padding: 0 4px; border-radius: 3px; }
a { color: var(--accent); }

@media (max-width: 560px) {
  table, tbody, tr, th, td { display: block; }
  thead { display: none; }
  td { border-top: none; }
  tr { border-top: 1px solid var(--border); margin-bottom: 8px; }
}