:root {
  --accent: #ffba00;
  --bg: #ffffff;
  --surface: #f5f6f8;
  --text: #16181d;
  --muted: #5c6270;
  --border: #e3e5ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161f;
    --surface: #1a1f2b;
    --text: #eceef2;
    --muted: #9aa1b1;
    --border: #272d3a;
  }
}

* {
  box-sizing: border-box;
}

body {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

header {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 2.5rem;
}

.mark {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 11px;
}

h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

h2 {
  margin: 2.75rem 0 0.75rem;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

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

ul {
  padding-left: 1.25rem;
}

li {
  margin: 0.4rem 0;
}

li::marker {
  color: var(--accent);
}

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

.lede {
  font-size: 1.05rem;
  color: var(--muted);
}

.card {
  margin: 1.25rem 0;
  padding: 1.1rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.card p:first-child {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.button {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.6rem 1.4rem;
  color: #12161f;
  background: var(--accent);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a + a {
  margin-left: 1rem;
}