:root {
  color-scheme: light dark;
  --bg: #0b1020;
  --surface: #121a2d;
  --surface-2: #18233b;
  --text: #e8edf7;
  --muted: #a7b1c4;
  --line: #2b3854;
  --accent: #4599ff;
  --accent-2: #9fb5ff;
  --brand-bg: #1877f2;
  --brand-fg: #ffffff;
  --code: #080c17;
  --max-width: 920px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 80% -20%, rgb(62 90 150 / 25%), transparent 35rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--accent-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

.topbar {
  align-items: center;
  backdrop-filter: blur(14px);
  background: rgb(11 16 32 / 88%);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr auto 1fr;
  height: 68px;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 650;
  text-decoration: none;
}

.brand span {
  background: var(--brand-bg);
  border-radius: 6px;
  color: var(--brand-fg);
  display: inline-block;
  font-weight: 850;
  letter-spacing: 0.04em;
  padding: 2px 9px;
}

.repo-link {
  color: var(--muted);
  font-size: 0.9rem;
  justify-self: end;
  text-decoration: none;
}

.topnav {
  display: flex;
  gap: 4px;
}

.topnav a {
  border-radius: 7px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  padding: 7px 12px;
  text-decoration: none;
}

.topnav a:hover,
.topnav a[data-current="true"] {
  background: var(--surface-2);
  color: var(--text);
}

.shell {
  display: grid;
  grid-template-columns: 250px minmax(0, var(--max-width));
  gap: 56px;
  justify-content: center;
  padding: 54px 34px 100px;
}

.shell.no-sidebar {
  grid-template-columns: minmax(0, var(--max-width));
}

.sidebar {
  align-self: start;
  max-height: calc(100vh - 132px);
  overflow-y: auto;
  padding-bottom: 16px;
  position: sticky;
  top: 112px;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  margin: 0 0 10px;
  text-transform: uppercase;
}

.sidebar nav {
  border-left: 1px solid var(--line);
  display: grid;
}

.sidebar nav a {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 7px 0 7px 18px;
  text-decoration: none;
}

.sidebar nav a[aria-current="page"] {
  border-left: 2px solid var(--accent);
  color: var(--text);
  font-weight: 700;
  margin-left: -1px;
}

.sidebar nav a.sub {
  font-size: 0.82rem;
  opacity: 0.85;
  padding: 4px 0 4px 32px;
}

main {
  min-width: 0;
}

main > h1 {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
  max-width: 850px;
}

.lede {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.55;
  margin: 14px 0 40px;
  max-width: 700px;
}

article h1 {
  font-size: 2rem;
  margin-top: 2.5rem;
}

article h2 {
  border-top: 1px solid var(--line);
  font-size: 1.65rem;
  margin-top: 3.6rem;
  padding-top: 1.5rem;
}

article h3 {
  color: #d5def0;
  font-size: 1.2rem;
  margin-top: 2.5rem;
}

article h4 {
  color: #c7d1e5;
  font-size: 1rem;
  margin-top: 2rem;
}

article p {
  max-width: 78ch;
}

blockquote {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--muted);
  margin: 1.5rem 0;
  padding: 12px 18px;
}

blockquote p {
  margin: 0;
}

code {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  font: 0.88em/1.4 "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  padding: 0.1em 0.35em;
}

pre {
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 14px 40px rgb(0 0 0 / 18%);
  line-height: 1.5;
  margin: 1.4rem 0;
  overflow-x: auto;
  padding: 18px 20px;
}

pre code {
  background: transparent;
  border: 0;
  padding: 0;
}

.list-item {
  display: grid;
  gap: 10px;
  grid-template-columns: 12px minmax(0, 1fr);
  margin: 0.5rem 0;
  max-width: 78ch;
}

.list-item > span {
  color: var(--accent);
}

.list-item.depth-1 {
  margin-left: 1.5rem;
}

.list-item.depth-2,
.list-item.depth-3 {
  margin-left: 3rem;
}

table {
  border-collapse: collapse;
  display: block;
  margin: 1.5rem 0;
  max-width: 100%;
  overflow-x: auto;
  width: max-content;
}

th,
td {
  border: 1px solid var(--line);
  padding: 9px 13px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-2);
}

.pager {
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin-top: 64px;
  padding-top: 24px;
}

.pager .next {
  margin-left: auto;
}

@media (max-width: 820px) {
  .topbar {
    gap: 10px;
    padding: 0 18px;
  }

  .topnav {
    gap: 0;
  }

  .topnav a {
    font-size: 0.8rem;
    padding: 6px 7px;
  }

  .repo-link {
    font-size: 0;
  }

  .repo-link::after {
    content: "GitHub ↗";
    font-size: 0.9rem;
  }

  .shell {
    display: block;
    padding: 34px 20px 72px;
  }

  .sidebar {
    max-height: none;
    margin-bottom: 48px;
    overflow: visible;
    position: static;
  }

  .sidebar nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  main > h1 {
    font-size: 2rem;
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fc;
    --surface: #fff;
    --surface-2: #edf2f8;
    --text: #172033;
    --muted: #526079;
    --line: #d8e0ec;
    --accent: #1877f2;
    --accent-2: #345dcc;
    --brand-bg: #1877f2;
    --brand-fg: #ffffff;
    --code: #f0f4f9;
  }

  .topbar {
    background: rgb(247 249 252 / 90%);
  }

  article h3,
  article h4 {
    color: var(--text);
  }
}