:root {
  color-scheme: light;
  --ink: #1c2426;
  --muted: #4a5a5e;
  --line: #d5e0e2;
  --paper: #f3f7f7;
  --card: #ffffff;
  --teal: #135965;
  --accent: #3094a6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: none;
}

header {
  background: var(--teal);
  color: #fff;
}

header a {
  color: #fff;
  text-decoration: none;
}

.bar {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  gap: 16px;
  font-size: 0.95rem;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin: 28px 0 8px;
  font-size: 1.15rem;
}

.lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

ul {
  margin: 8px 0 0;
  padding-left: 1.2rem;
}

li + li {
  margin-top: 6px;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

.updated {
  color: var(--muted);
  font-size: 0.92rem;
}