:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #4a4a4a;
  --line: #c9c9c9;
  --link: #0b4fa8;
  --card: #f5f5f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f0f0f0;
    --muted: #c0c0c0;
    --line: #3a3a3a;
    --link: #7fb2ff;
    --card: #1e1e1e;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 1.5rem 1rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: Segoe UI, Tahoma, Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.6;
}
main { max-width: 52rem; margin: 0 auto; }
h1 { font-size: 1.8rem; margin: 0 0 .5rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 .75rem; border-bottom: 2px solid var(--line); padding-bottom: .3rem; }
p.intro { color: var(--muted); margin: 0 0 1rem; }
ul.apps { list-style: none; margin: 0; padding: 0; }
ul.apps li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .9rem 1rem;
  margin: 0 0 .7rem;
}
a { color: var(--link); font-weight: 700; }
a:focus { outline: 3px solid var(--link); outline-offset: 2px; }
.meta { display: block; color: var(--muted); font-size: .95rem; font-weight: 400; }
footer { margin-top: 2.5rem; color: var(--muted); font-size: .9rem; }