:root {
  --paper: #0f0b18;
  --surface: rgba(26, 19, 38, 0.86);
  --surface-strong: rgba(29, 21, 41, 0.95);
  --ink: #f0eaf9;
  --muted: rgba(240, 234, 249, 0.6);
  --line: rgba(168, 128, 243, 0.15);
  --accent: #a880f3;
  --accent-soft: #5a2394;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
  --font-body: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-ui: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(90, 35, 148, 0.2), transparent 32%),
    linear-gradient(180deg, #0f0b18 0%, #16111f 55%, #0f0b18 100%);
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.72;
}

.doc-shell {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(15, 11, 24, 0.84);
  border-bottom: 1px solid var(--line);
}

.doc-shell__inner,
.index-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.doc-shell__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.25rem;
  padding: 0.95rem 0;
}

.doc-kicker,
.hero__eyebrow {
  margin: 0;
  color: var(--accent);
  font: 600 0.78rem/1 var(--font-ui);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.doc-nav,
.card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.16em;
}

.doc-nav a,
.card__links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(168, 128, 243, 0.2);
  border-radius: 999px;
  background: rgba(26, 19, 38, 0.9);
  color: var(--ink);
  font: 600 0.9rem/1 var(--font-ui);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.doc-nav a:hover,
.card__links a:hover {
  transform: translateY(-1px);
  border-color: rgba(168, 128, 243, 0.4);
  background: rgba(29, 21, 41, 1);
}

main {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.4rem 0 4rem;
}

.index-page main {
  width: auto;
}

.hero {
  padding: 3rem 0 1.5rem;
}

.hero h1 {
  margin: 0.35rem 0 0.75rem;
  font: 700 clamp(2.2rem, 5vw, 4.3rem)/0.95 var(--font-ui);
  letter-spacing: -0.04em;
}

.hero__lede {
  max-width: 58rem;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  padding: 1rem 0 4rem;
}

.card {
  min-height: 100%;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 0.5rem;
  font: 700 1.25rem/1.1 var(--font-ui);
  letter-spacing: -0.02em;
}

.card p {
  margin: 0 0 1rem;
  color: var(--muted);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 1.8rem 0 0.75rem;
  color: var(--ink);
  font-family: var(--font-ui);
  letter-spacing: -0.03em;
}

h1 {
  margin-top: 0.4rem;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 0.98;
}

h2 {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 1.5rem;
}

h3 {
  font-size: 1.14rem;
}

p,
ul,
ol,
table,
blockquote,
pre {
  margin: 0 0 1rem;
}

blockquote {
  padding: 0.2rem 1rem;
  border-left: 3px solid var(--accent-soft);
  color: var(--muted);
  background: rgba(26, 19, 38, 0.5);
}

code,
pre,
tt {
  font-family: "JetBrains Mono", "Fira Code", "IBM Plex Mono", monospace;
}

code {
  padding: 0.08rem 0.3rem;
  border-radius: 0.35rem;
  background: rgba(168, 128, 243, 0.12);
  font-size: 0.94em;
}

pre {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(168, 128, 243, 0.1);
  border-radius: 18px;
  background: #16111f;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

th,
td {
  padding: 0.85rem 0.95rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: rgba(168, 128, 243, 0.1);
  font-family: var(--font-ui);
  text-align: left;
}

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

@media (max-width: 720px) {
  .doc-shell {
    position: static;
  }

  main {
    padding-top: 1.5rem;
  }

  .hero {
    padding-top: 2rem;
  }
}