:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #161920;
  --panel-2: #1f242e;
  --text: #f3f4f6;
  --muted: #9ca3af;
  --line: #2d3440;
  --accent: #38bdf8;
  --accent-2: #fbbf24;
  --code: #090b0f;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--accent); text-decoration-thickness: .08em; text-underline-offset: .18em; }
.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 24px 56px;
}
.burger {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  cursor: pointer;
}
.burger span { display: block; height: 2px; background: var(--text); border-radius: 2px; transition: background .15s; }
.burger:hover span, .burger:focus span { background: var(--accent); }
.burger:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.toc-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, .55);
}
.toc-backdrop.is-open { display: block; }
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 150;
  width: min(340px, 85vw);
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 24px 18px 40px;
  transform: translateX(-100%);
  transition: transform .25s ease;
}
.sidebar.is-open { transform: translateX(0); }
.toc-list { display: grid; gap: 4px; }
.toc-link {
  display: block;
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
}
.toc-link:hover, .toc-link:focus { background: var(--panel-2); color: var(--accent); outline: none; }
.toc-level-3 { padding-left: 20px; color: var(--muted); font-size: .9rem; font-weight: 400; }
.toc-level-4 { padding-left: 36px; color: var(--muted); font-size: .86rem; font-weight: 400; }
main { min-width: 0; }
.document {
  border: 1px solid var(--line);
  background: #141822;
  border-radius: 8px;
  padding: clamp(24px, 4vw, 48px);
}
h1, h2, h3, h4, h5, h6 { line-height: 1.18; letter-spacing: 0; scroll-margin-top: 24px; }
h1 { margin: 0 0 18px; font-size: clamp(2rem, 5vw, 3.5rem); color: var(--accent-2); }
h2 {
  margin: 44px 0 14px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: clamp(1.45rem, 3vw, 2.15rem);
}
h3 { margin: 32px 0 10px; font-size: 1.28rem; color: var(--accent); }
h4 { margin: 26px 0 8px; font-size: 1.05rem; color: var(--accent-2); }
p { margin: 0 0 16px; color: var(--text); }
ul, ol { margin: 0 0 18px; padding-left: 1.35rem; }
li { margin: 6px 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 38px 0; }
code {
  border: 1px solid var(--line);
  background: var(--code);
  border-radius: 5px;
  padding: .08rem .32rem;
  color: #ffe6a4;
  font-size: .92em;
}
pre {
  margin: 18px 0 22px;
  padding: 18px;
  overflow: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--code);
}
pre code { border: 0; padding: 0; background: transparent; color: #ecf2ff; }
.table-wrap { overflow-x: auto; margin: 18px 0 24px; border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; min-width: 500px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--accent-2); background: var(--panel-2); font-size: .9rem; }
tr:last-child td { border-bottom: 0; }
.anchor { display: inline-block; width: 1.1em; margin-left: -1.1em; opacity: 0; text-decoration: none; color: var(--accent); }
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor, h4:hover .anchor { opacity: 1; }
.source-note { margin: 0 0 22px; color: var(--muted); font-size: .95rem; }
.callout {
  margin: 18px 0 24px;
  border: 1px solid rgba(56, 189, 248, .35);
  background: rgba(56, 189, 248, .08);
  border-radius: 8px;
  padding: 14px 16px;
}
.callout strong { color: var(--accent); }
figure { margin: 22px 0 28px; }
figure img { width: 100%; border-radius: 8px; border: 1px solid var(--line); display: block; }
figcaption { margin-top: 8px; font-size: .85rem; color: var(--muted); text-align: center; font-style: italic; }
@media (max-width: 640px) {
  .page { padding: 18px 14px 36px; }
  .document { padding: 22px 16px; }
  .anchor { margin-left: 0; width: auto; margin-right: .35rem; opacity: 1; }
  table { min-width: 460px; }
}