:root {
  --background: #f7f7f5;
  --surface: #ffffff;
  --text: #16181a;
  --muted: #5d6368;
  --accent: #5fbf2f;
  --border: #e3e4e2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f1112;
    --surface: #181b1d;
    --text: #eef0f1;
    --muted: #9aa1a6;
    --accent: #8ee05a;
    --border: #2a2e31;
  }
}

* {
  box-sizing: border-box;
}

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

header img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
}

header a {
  color: inherit;
  text-decoration: none;
}

h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0;
}

h2 {
  font-size: 21px;
  margin: 36px 0 8px;
}

h3 {
  font-size: 17px;
  margin: 24px 0 4px;
}

p, li {
  color: var(--text);
}

.lead {
  font-size: 20px;
  color: var(--muted);
}

.meta {
  color: var(--muted);
  font-size: 15px;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 8px 24px 16px;
  margin: 24px 0;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.links a {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

footer {
  margin-top: 56px;
  color: var(--muted);
  font-size: 14px;
}