:root {
  color-scheme: light;
  --bg: #ffffff;
  --fg: #0b1220;
  --muted: #6b7280;
  --border: #e5e7eb;
  --brand: #2563eb;
  --brand2: #22c55e;
  --card: #ffffff;
  --code-bg: #f3f4f6;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

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

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.content-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 16px;
  margin-top: 14px;
}

.doc {
  min-width: 0;
}

.page-meta {
  margin: 6px 0 14px;
  font-size: 13px;
}

.toc {
  position: sticky;
  top: 16px;
  align-self: start;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 12px 10px;
  background: #fff;
}

.toc-title {
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

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

.toc-list li {
  margin: 6px 0;
}

.toc-list a {
  color: var(--fg);
  text-decoration: none;
}

.toc-list a:hover {
  text-decoration: underline;
}

.toc-list li.toc-sub a {
  color: var(--muted);
  padding-left: 10px;
  display: inline-block;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.brand img {
  width: 36px;
  height: 36px;
}

.brand .name {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand .sub {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

nav a {
  color: var(--fg);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  background: #fff;
}

nav a:hover {
  border-color: color-mix(in srgb, var(--brand) 35%, var(--border));
}

.hero {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 18px 16px;
  background:
    radial-gradient(1000px 320px at 10% 0%, color-mix(in srgb, var(--brand) 15%, #fff) 0%, #fff 60%),
    radial-gradient(900px 340px at 90% 0%, color-mix(in srgb, var(--brand2) 14%, #fff) 0%, #fff 60%);
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.15;
}

.hero .mascot {
  width: 48px;
  height: 48px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: #fff;
  display: block;
  margin: 0 0 10px;
  object-fit: cover;
}

.hero .mascot.fallback {
  object-fit: contain;
  padding: 8px;
  box-sizing: border-box;
}

.hero p {
  margin: 8px 0;
  color: var(--muted);
  max-width: 75ch;
}

.pillrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.pill {
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  background: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  margin-top: 16px;
}

.card {
  grid-column: span 6;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 14px 14px 12px;
}

.card h2 {
  margin: 2px 0 8px;
  font-size: 18px;
}

.card p {
  margin: 8px 0;
  color: var(--muted);
}

.card a {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
}

.card a:hover {
  text-decoration: underline;
}

@media (max-width: 860px) {
  .card {
    grid-column: span 12;
  }
  header.site {
    flex-direction: column;
    align-items: stretch;
  }
  nav {
    justify-content: flex-start;
  }
  .brand {
    min-width: 0;
  }
  .content-grid {
    grid-template-columns: 1fr;
  }
  .toc {
    position: static;
    order: 2;
  }
}

article {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 16px 10px;
  background: #fff;
}

article h1 {
  margin: 0 0 6px;
  font-size: 24px;
}

article h2 {
  margin: 18px 0 8px;
  font-size: 18px;
}

article h3 {
  margin: 14px 0 6px;
  font-size: 15px;
}

article p {
  margin: 10px 0;
}

article ul,
article ol {
  margin: 8px 0 8px 20px;
}

article li {
  margin: 6px 0;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  overflow: auto;
}

.mermaid {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  padding: 10px 10px 6px;
  overflow-x: auto;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
}

code {
  background: var(--code-bg);
  padding: 1px 4px;
  border-radius: 6px;
}

.footer {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer .version {
  margin-left: auto;
  white-space: nowrap;
}