:root {
  --bg: #F5F7F2;
  --surface: #FFFFFF;
  --border: #E8EAE8;
  --primary: #2F4F2F;
  --accent: #FF6B35;
  --text-primary: #1B2621;
  --text-secondary: #4A5D4A;
  --text-tertiary: #7A8B7A;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
}

header .inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header a.brand {
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  letter-spacing: -0.01em;
}

header nav a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 20px;
  font-size: 14px;
}

header nav a:hover {
  color: var(--primary);
}

main {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 24px;
}

h1 {
  font-size: 32px;
  margin: 0 0 8px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.last-updated {
  color: var(--text-tertiary);
  font-size: 13px;
  margin-bottom: 32px;
}

section {
  background: var(--surface);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}

section h2 {
  font-size: 18px;
  margin: 0 0 12px;
  color: var(--text-primary);
}

section p {
  color: var(--text-secondary);
  margin: 0 0 12px;
  font-size: 15px;
}

section p:last-child {
  margin-bottom: 0;
}

footer {
  max-width: 720px;
  margin: 40px auto;
  padding: 24px;
  color: var(--text-tertiary);
  font-size: 13px;
  text-align: center;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  margin: 0 8px;
}

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

.hero {
  text-align: center;
  padding: 40px 0 24px;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 12px;
}

.hero p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 500px;
  margin: 0 auto;
}

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

.links a {
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
}

.links a.secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.links a:hover {
  filter: brightness(1.05);
}

@media (max-width: 520px) {
  h1 { font-size: 28px; }
  .hero h1 { font-size: 30px; }
  section { padding: 20px; }
  header nav a { margin-left: 12px; }
}