:root {
  --bg: #0f1216;
  --panel: #151a20;
  --ink: #dfe4ea;
  --dim: #8b95a3;
  --line: #232a33;
  --accent: #c9a227;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.shell {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.mark {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.masthead nav { margin-left: auto; display: flex; gap: 1rem; }

.masthead nav a {
  color: var(--dim);
  text-decoration: none;
  font-size: 0.9rem;
}

.masthead nav a:hover, .masthead nav a[aria-current] { color: var(--accent); }

h1 {
  font-size: 1.75rem;
  line-height: 1.3;
  margin: 2rem 0 0.75rem;
  font-weight: 650;
}

h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }

p { margin: 0 0 1rem; }

.intro { color: var(--dim); font-size: 1.05rem; max-width: 40rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  margin: 1rem 0;
}

.card h2 { margin-top: 0; }

.meta {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", monospace;
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.04em;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--line);
}

th { color: var(--dim); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; }

.foot {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.85rem;
}

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

@media (max-width: 480px) {
  .masthead nav { width: 100%; margin-left: 0; }
}