:root {
  --paper: #faf6ee;
  --ink: #191a24;
  --body: #2c2d38;
  --muted: #5b5d69;
  --line: #e2ddd7;
  --coral: #c24f38;
  --card: #ffffff;
  --sunken: #f4efe9;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

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

a:hover {
  text-decoration-thickness: 2px;
}

header,
main,
footer {
  width: min(46rem, calc(100% - 2rem));
  margin: 0 auto;
}

header {
  padding: 2.5rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.5rem;
  color: var(--ink);
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin: 2.25rem 0 0.75rem;
  color: var(--ink);
  font-size: 1.25rem;
}

h3 {
  margin: 1.4rem 0 0.5rem;
  color: var(--ink);
  font-size: 1.05rem;
}

p,
li {
  margin: 0 0 0.85rem;
}

ul,
ol {
  padding-left: 1.2rem;
}

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

nav.toc {
  margin: 1.5rem 0 0;
  padding: 1rem 1.1rem;
  background: var(--sunken);
  border-radius: 16px;
}

nav.toc a {
  display: inline-block;
  margin: 0.15rem 0.75rem 0.15rem 0;
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.25rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  background: var(--sunken);
  color: var(--ink);
  font-weight: 650;
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

.note {
  padding: 0.9rem 1rem;
  background: var(--sunken);
  border-radius: 14px;
}

footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.65rem;
  }

  th,
  td {
    min-width: 7.5rem;
  }
}