:root {
  --bg: #ffffff;
  --fg: #111917;
  --muted: #56635f;
  --accent: #0b7a5c;
  --card: #f2f6f5;
  --line: #dbe3e0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07110f;
    --fg: #e6f2ee;
    --muted: #9db3ac;
    --accent: #1fd49a;
    --card: #0f1f1c;
    --line: #1f3632;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; gap: 12px; flex-wrap: wrap; }
header a.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
header a.brand img { width: 32px; height: 32px; border-radius: 8px; }
.hero-img { display: block; width: 100%; height: auto; border-radius: 14px; margin: 24px 0 8px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; }
nav a:first-child { margin-left: 0; }
nav a:hover, a { color: var(--accent); }
h1 { font-size: 34px; line-height: 1.2; margin: 40px 0 12px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
p.lead { font-size: 20px; color: var(--muted); }
.badge { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 2px 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin: 16px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.grid .card { margin: 0; }
.grid h3 { margin: 0 0 4px; font-size: 18px; }
.grid p { margin: 0; color: var(--muted); font-size: 15px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--line); }
.todo { background: #fff3c4; color: #5a4500; padding: 0 4px; border-radius: 4px; }
footer { color: var(--muted); font-size: 14px; padding-top: 40px; padding-bottom: 40px; }