:root {
  --bg: #f3efe6;
  --bg-raised: #fffdf8;
  --ink: #1c1915;
  --muted: #5e584e;
  --line: #ddd6c8;
  --accent: #0c6b52;
  --accent-ink: #f4fbf7;
  --warn: #8a4b12;
  --mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  --sans: "Avenir Next", "Segoe UI", "PingFang SC", "Noto Sans", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
}

a { color: inherit; }

.wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 650;
  letter-spacing: -0.03em;
  text-decoration: none;
  font-size: 20px;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 15px;
}

nav a { text-decoration: none; }

nav a:hover { text-decoration: underline; }

.button {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 15px;
}

.button.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

main { padding: 48px 0 72px; }

h1 {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 650;
  margin: 0 0 18px;
}

h2 {
  font-size: 28px;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.lede {
  max-width: 38rem;
  font-size: 19px;
  color: var(--muted);
  margin: 0 0 28px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 42px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card, .note, table {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.card { padding: 18px 18px 16px; }

.card strong { display: block; margin-bottom: 6px; }

.card p, .note p { margin: 0; color: var(--muted); }

.section { margin-top: 54px; }

table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
}

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

code, .mono {
  font-family: var(--mono);
  font-size: 0.92em;
}

pre {
  background: #1c1915;
  color: #f3efe6;
  border-radius: 16px;
  padding: 16px 18px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
}

.note {
  padding: 14px 16px;
  margin: 16px 0 0;
}

.note strong { color: var(--warn); }

footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 36px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  header { align-items: flex-start; flex-direction: column; }
  nav { flex-wrap: wrap; }
  th, td { padding: 10px 8px; }
  table { display: block; overflow-x: auto; }
}