:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #555555;
  --line: #e6e6e6;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c0c;
    --text: #f2f2f2;
    --muted: #b7b7b7;
    --line: #232323;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 18px;
}

.header h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 8px 0 0 0;
  color: var(--muted);
}

.card {
  margin: 28px 0;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.aside {
  color: var(--muted);
  font-size: 0.95rem;
}

.sep {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0;
}

h2 {
  font-size: 1rem;
  margin: 22px 0 10px 0;
  color: var(--muted);
  font-weight: 600;
}

.links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

li { margin: 8px 0; }

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.card ul {
  list-style: disc;
  padding-left: 1.4rem;
  margin: 0;
}

a:hover { opacity: 0.75; }

.footer {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}