:root {
  --paper: #f7f6f3;
  --ink: #1f2925;
  --muted: #66706b;
  --forest: #2f6f5e;
  --border: #e2e0db;
  --card: #fcfbf8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header {
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
  padding-bottom: 1rem;
}

header .brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

header .tag {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1rem;
  font-size: 0.95rem;
}

h1 {
  font-size: 1.75rem;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
}

p, li { color: var(--ink); }
.muted { color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.35rem;
  margin: 1.25rem 0;
}

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

ul { padding-left: 1.2rem; }