:root {
  color-scheme: light dark;
  --bg: #fbfaf7;
  --text: #1f2328;
  --muted: #5d636b;
  --rule: #e3e0d8;
  --accent: #4f46e5;
  --panel: #f1efe9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151719;
    --text: #e8e6e1;
    --muted: #a3a8ae;
    --rule: #2c3035;
    --accent: #8c86ff;
    --panel: #1d2023;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 3rem 16px 4rem;
}

header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

header .logo {
  flex: none;
  width: 88px;
  height: 88px;
  border-radius: 22.5%;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.18);
}

header .logo img { display: block; width: 100%; height: 100%; border-radius: inherit; }

@media (max-width: 480px) {
  header .logo { width: 64px; height: 64px; }
}

header .app {
  margin: 0;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0.25rem 0 0.5rem;
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin: 2.5rem 0 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-size: 1.25rem;
}

h3 { margin: 1.5rem 0 0.25rem; font-size: 1.05rem; }

p, ul { margin: 0 0 1rem; }
li { margin-bottom: 0.35rem; }

a { color: var(--accent); }

.meta { color: var(--muted); margin: 0; }

.summary {
  background: var(--panel);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}

.summary p:last-child, .summary ul:last-child { margin-bottom: 0; }

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}