/* The guide pages (about, how-to-play, tactics, the-sea). Plain documents beside
   the game, written for people and for AdSense's review (2026-11-01); the colours
   are privacy.html's. No script and no ad code here. */
@font-face {
  font-family: 'Nunito';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(/fonts/nunito-800-latin.woff2) format('woff2');
}
:root {
  --bg: #0f1c2b;
  --panel: #16263a;
  --text: #e8edf3;
  --muted: #8fa3b8;
  --rule: rgba(255, 255, 255, 0.10);
  --link: #ffd36b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, 'Segoe UI', sans-serif;
}
header, main, footer { max-width: 760px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
header { padding-top: 22px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 18px; }
.brand { font: 800 18px 'Nunito', ui-rounded, system-ui, sans-serif; letter-spacing: .08em; color: var(--text); text-decoration: none; margin-right: auto; }
nav { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current] { color: var(--link); }
main { padding-top: 10px; padding-bottom: 32px; }
h1 { font: 800 34px/1.2 'Nunito', ui-rounded, system-ui, sans-serif; margin: 22px 0 10px; }
h2 { font: 800 21px/1.3 'Nunito', ui-rounded, system-ui, sans-serif; margin: 34px 0 8px; padding-top: 22px; border-top: 1px solid var(--rule); }
h3 { font: 800 17px/1.3 'Nunito', ui-rounded, system-ui, sans-serif; margin: 22px 0 4px; }
.date { color: var(--muted); margin: 0 0 24px; }
code { background: var(--panel); padding: 1px 6px; border-radius: 4px; font-size: 13px; }
.lead { font-size: 18px; color: var(--text); }
a { color: var(--link); }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
figure { margin: 22px 0; }
figure img { display: block; width: 100%; height: auto; border-radius: 8px; }
figcaption { color: var(--muted); font-size: 14px; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 14px; }
kbd { background: var(--panel); border: 1px solid var(--rule); border-radius: 4px; padding: 1px 7px; font: 600 13px system-ui, sans-serif; white-space: nowrap; }
.play { display: inline-block; margin: 12px 0 4px; padding: 10px 26px; border-radius: 6px; background: #ffc53d; color: #1b1410; font: 800 16px 'Nunito', ui-rounded, system-ui, sans-serif; letter-spacing: .06em; text-decoration: none; }
footer { padding-top: 16px; padding-bottom: 40px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; }