:root {
  --ink: #172033;
  --muted: #566179;
  --line: #d9e0ea;
  --paper: #ffffff;
  --soft: #f5f7fb;
  --blue: #0a66c2;
  --green: #047857;
  --red: #c1121f;
  --amber: #b45309;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 252, 255, 0.96);
  backdrop-filter: blur(8px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  min-height: 66px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 900;
}

.navlinks {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 14px;
  font-weight: 650;
}

.layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 34px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 58px;
}

.sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.sidebar strong {
  display: block;
  margin-bottom: 10px;
}

.sidebar a {
  display: block;
  padding: 6px 0;
  color: var(--ink);
  font-size: 14px;
}

.doc {
  min-width: 0;
  padding-bottom: 32px;
}

.crumb {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.source-link {
  display: inline-flex;
  margin: 0 0 20px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font-size: 13px;
  font-weight: 700;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 6vw, 56px);
}

h2 {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 28px;
}

h3 { margin-top: 26px; font-size: 22px; }
p { max-width: 880px; }

img {
  max-width: 100%;
  height: auto;
}

pre, .mermaid {
  max-width: 100%;
  overflow-x: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: #eef2f7;
  font-family: "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

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

blockquote {
  margin: 20px 0;
  padding: 12px 18px;
  border-left: 4px solid var(--blue);
  background: var(--soft);
}

.table-scroll { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 15px;
}

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

th {
  background: var(--soft);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0;
}

footer {
  border-top: 1px solid var(--line);
  background: var(--soft);
}

.footer-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .navlinks {
    justify-content: flex-start;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}