:root {
  color-scheme: light;
  --bg: #f9fafb;
  --fg: #262f40;
  --muted: #676f7e;
  --border: #e0e6eb;
  --brand: #3b82f6;
  --brand2: #7bb517;
  --card: #ffffff;
  --code-bg: #eaedf0;
}

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;
}

.callout {
  margin: 12px 0 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px 10px;
  background:
    radial-gradient(900px 220px at 10% 0%, color-mix(in srgb, var(--brand) 10%, #fff) 0%, #fff 62%),
    radial-gradient(820px 240px at 90% 0%, color-mix(in srgb, var(--brand2) 10%, #fff) 0%, #fff 62%);
}

.callout summary {
  cursor: pointer;
}

.intro {
  margin-top: 10px;
}

.intro-kicker {
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.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;
}

.doc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--fg) 80%, #000);
  border: 1px solid color-mix(in srgb, var(--border) 80%, #fff);
  border-radius: 999px;
  padding: 6px 10px;
  background:
    linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--brand) 5%, #fff) 100%);
}

.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 ul {
  list-style: none;
  margin: 6px 0 6px 12px;
  padding: 0;
}

.toc-list ul li {
  margin: 4px 0;
}

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

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

.toc-list ul a {
  color: var(--muted);
}

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: 52px;
  height: 52px;
  flex: 0 0 auto;
}

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

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

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  align-items: center;
}

.site-nav a,
.site-nav summary {
  color: var(--fg);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  background: #fff;
  cursor: pointer;
  user-select: none;
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.1px;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease,
    background 160ms ease;
}

.site-nav a:hover,
.site-nav summary:hover {
  border-color: color-mix(in srgb, var(--brand) 35%, var(--border));
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.site-nav a:focus-visible,
.site-nav summary:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--brand) 55%, #fff);
  outline-offset: 2px;
}

.site-nav .nav-home {
  background:
    linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--brand) 6%, #fff) 100%);
  border-color: color-mix(in srgb, var(--brand) 28%, var(--border));
}

.site-nav summary {
  list-style: none;
}

.site-nav summary::-webkit-details-marker {
  display: none;
}

.nav-dd {
  position: relative;
}

.nav-dd summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
  background:
    linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--brand) 4%, #fff) 100%);
}

.nav-dd summary::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid color-mix(in srgb, var(--muted) 80%, #000);
  transform: translateY(1px);
  transition: transform 160ms ease;
}

.nav-dd[open] summary {
  border-color: color-mix(in srgb, var(--brand) 40%, var(--border));
  box-shadow: 0 12px 22px rgba(0, 0, 0, 0.08);
}

.nav-dd[open] summary::after {
  transform: rotate(180deg) translateY(-1px);
}

.nav-dd-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 240px;
  max-width: 320px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    radial-gradient(520px 140px at 10% 0%, color-mix(in srgb, var(--brand) 10%, #fff) 0%, #fff 66%),
    radial-gradient(520px 140px at 90% 0%, color-mix(in srgb, var(--brand2) 10%, #fff) 0%, #fff 66%);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
  z-index: 50;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-dd[open] .nav-dd-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  transform-origin: top right;
  animation: navMenuIn 140ms ease-out;
}

.nav-dd-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
  border-radius: 12px;
  background: color-mix(in srgb, #fff 92%, var(--brand));
  border: 1px solid color-mix(in srgb, var(--border) 65%, #fff);
}

.nav-dd-section + .nav-dd-section {
  margin-top: 2px;
}

.nav-dd-section-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--muted) 90%, #000);
  margin: 2px 4px 2px;
}

.nav-dd-menu::before {
  content: "";
  position: absolute;
  top: -7px;
  right: 16px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: rotate(45deg);
}

.nav-dd-menu a {
  border-radius: 10px;
  padding: 8px 10px;
  border: 1px solid color-mix(in srgb, var(--border) 70%, #fff);
  background: #fff;
  font-weight: 600;
}

.nav-dd-menu a:hover {
  border-color: color-mix(in srgb, var(--brand) 35%, var(--border));
  background: color-mix(in srgb, var(--brand) 6%, #fff);
}

@keyframes navMenuIn {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.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;
  }
  .site-nav {
    justify-content: flex-start;
  }
  .brand {
    min-width: 0;
  }
  .nav-dd {
    width: 100%;
  }
  .site-nav summary {
    width: 100%;
  }
  .nav-dd-menu {
    position: static;
    min-width: 0;
    box-shadow: none;
    margin-top: 8px;
    max-width: none;
  }
  .nav-dd-menu::before {
    display: none;
  }
  .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 {
  font-size: 16px;
  max-width: none;
  height: auto;
  display: block;
}

.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;
}