:root {
  --bg: #fafaf8; --fg: #1d1d1f; --muted: #5c5c63; --card: #ffffff; --line: #dcdcd6; --accent: #0b5cad; --accent-fg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1b1b1d; --fg: #ececee; --muted: #a4a4ad; --card: #252528; --line: #3a3a40; --accent: #6cb2f5; --accent-fg: #10151b; }
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; color: var(--fg); font: 1rem/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
h1 { margin: 0 0 .25rem; font-size: 2rem; line-height: 1.2; }
h2 { margin: 2.5rem 0 .75rem; font-size: 1.1rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
h3 { margin: 0 0 .5rem; font-size: 1.25rem; }
.lead { margin: 0 0 .75rem; color: var(--muted); font-size: 1.1rem; }
a { color: var(--accent); }
.card { padding: 1.25rem; background: var(--card); border: 1px solid var(--line); border-radius: .75rem; }
.card p { margin: 0 0 .9rem; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 0; }
.button { display: inline-block; min-height: 2.75rem; padding: .65rem 1.1rem; border-radius: .5rem; background: var(--accent); color: var(--accent-fg); font-weight: 600; text-decoration: none; }
.button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
@media (max-width: 480px) {
  main { padding-top: 1.5rem; }
  h1 { font-size: 1.6rem; }
  .actions { flex-direction: column; }
  .button { width: 100%; text-align: center; }
}