:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: rgba(255, 255, 255, 0.92);
  --text: #132033;
  --muted: #5f6f86;
  --line: rgba(19, 32, 51, 0.12);
  --accent: #0f8f87;
  --accent-dark: #0a625c;
  --shadow: 0 18px 48px rgba(19, 32, 51, 0.12);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 143, 135, 0.18), transparent 34%),
    linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 72px;
}

.hero,
.section-card,
.footer-card {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.08;
}

.hero p {
  max-width: 72ch;
  margin: 14px 0 0;
  color: var(--muted);
}

.hero-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  align-items: start;
}

.meta-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(15, 143, 135, 0.07);
}

.meta-panel h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.meta-panel dl {
  margin: 0;
}

.meta-panel dt {
  margin-top: 10px;
  font-weight: 700;
}

.meta-panel dd {
  margin: 2px 0 0;
  color: var(--muted);
}

.language-nav,
.doc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font-weight: 600;
}

.pill.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-color: transparent;
  color: #fff;
}

.layout {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
}

.toc,
.section-card,
.footer-card {
  border-radius: var(--radius-lg);
}

.toc {
  position: sticky;
  top: 20px;
  align-self: start;
  padding: 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
}

.toc h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li + li {
  margin-top: 10px;
}

.content {
  display: grid;
  gap: 18px;
}

.section-card {
  padding: 24px;
}

.section-card h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.section-card h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.section-card p,
.section-card li {
  color: var(--text);
}

.muted {
  color: var(--muted);
}

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

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

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 0.97rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 12px 10px;
  border-top: 1px solid var(--line);
}

th {
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.callout {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  background: rgba(15, 143, 135, 0.08);
}

.footer-card {
  padding: 24px;
  margin-top: 24px;
}

.footer-card p:last-child {
  margin-bottom: 0;
}

code {
  font-family: "SF Mono", "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.95em;
}

@media (max-width: 860px) {
  .hero-grid,
  .layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }
}

@media (max-width: 560px) {
  .page {
    padding: 20px 14px 54px;
  }

  .hero,
  .section-card,
  .footer-card {
    border-radius: 20px;
  }

  th,
  td {
    display: block;
    width: 100%;
  }

  thead {
    display: none;
  }

  td {
    border-top: none;
    padding-top: 6px;
    padding-bottom: 6px;
  }

  tr {
    display: block;
    border-top: 1px solid var(--line);
    padding: 10px 0;
  }
}