:root {
  --navy: #1a3d55;
  --navy-dark: #0e2233;
  --teal: #0b6e79;
  --orange: #c25e00;
  --bg: #f4f7f9;
  --text: #0e2233;
  --muted: #5f6b73;
  --card: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e2233;
    --text: #e8eef2;
    --muted: #a6b4bd;
    --card: #15324a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}

header {
  background: var(--navy);
  color: #fff;
  padding: 20px 16px;
}

header .inner,
main {
  max-width: 760px;
  margin: 0 auto;
}

header a {
  color: #fff;
  text-decoration: none;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
}

nav {
  margin-top: 8px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.85;
}

main {
  padding: 24px 16px 64px;
}

h1,
h2,
h3 {
  font-family: "Space Grotesk", system-ui, sans-serif;
  line-height: 1.25;
}

h1 {
  color: var(--teal);
}

h2 {
  margin-top: 2rem;
  border-top: 1px solid rgba(128, 128, 128, 0.25);
  padding-top: 1.5rem;
}

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

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.callout {
  background: var(--card);
  border-left: 4px solid var(--orange);
  border-radius: 10px;
  padding: 12px 16px;
  margin: 16px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 10px;
  overflow: hidden;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.2);
  vertical-align: top;
}

th {
  background: rgba(11, 110, 121, 0.12);
}

.placeholder {
  background: #fff3cd;
  color: #7a4b00;
  padding: 0 4px;
  border-radius: 4px;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px 40px;
  color: var(--muted);
  font-size: 0.9rem;
}