:root {
  --bg: #fafaf7;
  --fg: #1a1a1a;
  --dim: #6a6a6a;
  --accent: #a8431d;
  --rule: #e2e0d9;
  --code-bg: #f1efe8;
  --highlight-bg: #fdf6f1;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, pre, .mono {
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

header {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--rule);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 1rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.brand a {
  color: inherit;
  text-decoration: none;
}

.brand a:hover {
  color: var(--accent);
}

nav a[aria-current="page"] {
  color: var(--accent);
}

nav a {
  margin-left: 1.25rem;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.9rem;
}

nav a:hover {
  color: var(--accent);
  text-decoration: underline;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  margin: 4rem 0;
}

.hero {
  margin: 4rem 0 5rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 1.5rem;
}

.lede {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--fg);
  margin: 0 0 2rem;
  max-width: 60ch;
}

.meta {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--dim);
}

.meta span {
  margin-right: 1.5rem;
  display: inline-block;
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1rem;
  max-width: 65ch;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  max-width: 65ch;
}

li {
  margin-bottom: 0.5rem;
}

.design {
  margin: 0;
}

.design dt {
  font-weight: 600;
  margin-top: 1.25rem;
  font-size: 0.95rem;
}

.design dd {
  margin: 0.25rem 0 0 0;
  color: var(--dim);
  max-width: 65ch;
}

.design dd code {
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.88rem;
  color: var(--fg);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem -0.25rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}

th {
  font-weight: 600;
  border-bottom: 2px solid var(--rule);
}

tr.highlight td {
  background: var(--highlight-bg);
}

.roadmap {
  list-style: none;
  padding-left: 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem;
}

.roadmap li {
  margin-bottom: 0.6rem;
}

.roadmap em {
  color: var(--dim);
  font-style: normal;
  font-size: 0.85rem;
}

.links {
  list-style: none;
  padding-left: 0;
}

footer {
  max-width: 760px;
  margin: 4rem auto 2rem;
  padding: 2rem 1.5rem 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--dim);
}

footer p {
  margin: 0 0 0.4rem;
}

.dim {
  color: var(--dim);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.85rem; }
  .lede { font-size: 1.05rem; }
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  nav a { margin-left: 0; margin-right: 1.25rem; }
  .meta span { display: block; margin-bottom: 0.25rem; }
  table { font-size: 0.8rem; }
  th, td { padding: 0.4rem 0.5rem; }
}