:root {
  color-scheme: light;
  --bg: #f7f5f0;
  --surface: #fffefa;
  --text: #1f2933;
  --muted: #5f6b76;
  --line: #d9d3c7;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --code-bg: #eee9df;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.35);
  outline-offset: 3px;
}

.page {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 32px 20px 56px;
}

.hero {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 4rem);
}

h2 {
  margin: 44px 0 14px;
  padding-top: 6px;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

h3,
h4 {
  margin: 26px 0 10px;
  font-size: 1.08rem;
}

h4 {
  color: var(--muted);
  font-size: 1rem;
}

p {
  margin: 0 0 16px;
}

ul {
  margin: 0 0 20px;
  padding-left: 1.35rem;
}

li + li {
  margin-top: 8px;
}

.lede {
  max-width: 760px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.08rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 254, 250, 0.7);
}

.language-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.language-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 7px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

.language-nav a[aria-current="page"] {
  background: var(--accent);
  color: #ffffff;
}

.content {
  padding-top: 18px;
}

.language-section {
  padding: 34px 0 18px;
}

.language-section + .language-section {
  margin-top: 34px;
  padding-top: 46px;
  border-top: 2px solid var(--line);
}

.section-header {
  max-width: 800px;
  margin-bottom: 8px;
}

.section-header h2 {
  margin-top: 0;
}

.section {
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(217, 211, 199, 0.72);
}

.section:last-child {
  border-bottom: 0;
}

.toc {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 18px;
  margin: 26px 0 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.toc a {
  font-weight: 650;
  text-decoration: none;
}

.definition-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 22px;
}

.definition-list div {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.definition-list dt {
  margin: 0 0 4px;
  font-weight: 700;
}

.definition-list dd {
  margin: 0;
  color: var(--muted);
}

code {
  padding: 0.1em 0.28em;
  border-radius: 4px;
  background: var(--code-bg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.94em;
}

footer {
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .page {
    padding: 22px 16px 42px;
  }

  .hero {
    padding-top: 22px;
  }

  .meta,
  .language-nav {
    align-items: stretch;
    flex-direction: column;
  }

  .pill,
  .language-nav a {
    justify-content: center;
    width: 100%;
  }

  .toc {
    grid-template-columns: 1fr;
  }
}