:root {
  --bg-paper: #FAF7F2;
  --bg-card: #FFFFFF;
  --text-ink: #1C1917;
  --text-ink-soft: #57534E;
  --text-ink-muted: #78716C;
  --border-subtle: #E7E2D8;
  --accent-vermilion: #E04828;
  --accent-vermilion-subtle: rgba(224, 72, 40, 0.08);
  --font-serif: "New York", "Charter", "Georgia", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-paper: #121110;
    --bg-card: #1C1A18;
    --text-ink: #F5F2EB;
    --text-ink-soft: #A8A29E;
    --text-ink-muted: #78716C;
    --border-subtle: #292524;
    --accent-vermilion: #FF5A36;
    --accent-vermilion-subtle: rgba(255, 90, 54, 0.15);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-paper);
  color: var(--text-ink);
  font-family: var(--font-serif);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding: 0 1.5rem 4rem 1.5rem;
}

.container {
  max-width: 680px;
  margin: 0 auto;
}

header {
  padding: 3rem 0 2rem 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.logo-link {
  text-decoration: none;
  color: var(--text-ink);
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--accent-vermilion);
}

nav a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-ink-soft);
  text-decoration: none;
  margin-left: 1.25rem;
  transition: color 0.15s ease;
}

nav a:hover, nav a.active {
  color: var(--accent-vermilion);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-vermilion);
  margin-bottom: 0.75rem;
}

h1 {
  font-size: 2.35rem;
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: 1.45rem;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}

p {
  color: var(--text-ink-soft);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

ul, ol {
  color: var(--text-ink-soft);
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  font-size: 1.05rem;
}

li {
  margin-bottom: 0.5rem;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--text-ink);
  margin-bottom: 1.75rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: var(--accent-vermilion-subtle);
  color: var(--accent-vermilion);
  margin-bottom: 0.5rem;
}

.highlight-box {
  background-color: var(--accent-vermilion-subtle);
  border-left: 3px solid var(--accent-vermilion);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 8px 8px 0;
}

.highlight-box p {
  color: var(--text-ink);
  margin-bottom: 0;
  font-size: 0.95rem;
}

.btn-primary {
  display: inline-block;
  font-family: var(--font-sans);
  background: var(--text-ink);
  color: var(--bg-paper);
  text-decoration: none;
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  margin-top: 0.5rem;
  transition: opacity 0.15s ease;
}

.btn-primary:hover {
  opacity: 0.88;
}

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-ink-muted);
}

footer a {
  color: var(--text-ink-soft);
  text-decoration: none;
}

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

.footer-links a {
  margin-left: 1rem;
}