:root {
  --bg: #090d12;
  --panel: #101720;
  --panel-2: #151e29;
  --text: #dbe8ef;
  --muted: #8fa4b2;
  --edge: #253542;
  --accent: #63f5c8;
  --accent-2: #79c8ff;
  --warn: #ffd479;
  --danger: #ff8f9a;
  --code: #071017;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.65; }
a { color: var(--accent-2); text-underline-offset: .18em; }
a:hover { color: var(--accent); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; background: var(--panel); padding: .6rem; }
.shell { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
.masthead { position: sticky; top: 0; z-index: 5; border-bottom: 1px solid var(--edge); background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(12px); }
.masthead-inner { display: flex; align-items: baseline; gap: 1rem; padding: .9rem 0; }
.brand { color: var(--accent); font-weight: 800; font-size: 1.2rem; letter-spacing: .04em; text-decoration: none; }
.tagline { color: var(--muted); font-size: .9rem; }
.layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 3rem; align-items: start; }
.sidebar { position: sticky; top: 4.25rem; display: flex; flex-direction: column; padding: 2rem 0; max-height: calc(100vh - 4.5rem); overflow: auto; }
.sidebar strong { color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; margin: 1.1rem 0 .35rem; }
.sidebar strong:first-child { margin-top: 0; }
.sidebar a { color: var(--text); text-decoration: none; padding: .18rem 0; font-size: .92rem; }
.sidebar a:hover { color: var(--accent); }
.content { min-width: 0; padding: 2.3rem 0 5rem; max-width: 850px; }
h1, h2, h3 { line-height: 1.22; color: #f5fbff; scroll-margin-top: 5rem; }
h1 { font-size: clamp(2rem, 6vw, 3.3rem); margin: 0 0 1rem; letter-spacing: -.035em; }
h2 { border-top: 1px solid var(--edge); margin-top: 3rem; padding-top: 1.3rem; }
h3 { margin-top: 2rem; }
p, li { max-width: 78ch; }
code { background: var(--code); border: 1px solid var(--edge); border-radius: .28rem; padding: .08rem .3rem; font-size: .9em; }
pre { background: var(--code); border: 1px solid var(--edge); border-radius: .55rem; padding: 1rem 1.1rem; overflow: auto; }
pre code { border: 0; padding: 0; background: transparent; }
blockquote { margin-left: 0; padding: .15rem 1rem; border-left: 3px solid var(--warn); color: var(--muted); background: var(--panel); }
table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; margin: 1.25rem 0; }
th, td { border: 1px solid var(--edge); padding: .55rem .7rem; text-align: left; vertical-align: top; }
th { background: var(--panel-2); color: #f6fbff; }
hr { border: 0; border-top: 1px solid var(--edge); margin: 2.5rem 0; }
.callout { padding: 1rem 1.1rem; border: 1px solid var(--edge); border-left: 4px solid var(--accent); background: var(--panel); border-radius: .45rem; }
.footer { border-top: 1px solid var(--edge); color: var(--muted); display: flex; justify-content: space-between; gap: 1rem; padding: 1.5rem 0 3rem; font-size: .9rem; }
@media (max-width: 820px) {
  .layout { display: block; }
  .sidebar { position: static; max-height: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .2rem 1rem; border-bottom: 1px solid var(--edge); }
  .sidebar strong { grid-column: 1 / -1; }
  .content { padding-top: 1.6rem; }
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f7fafb; --panel: #eef4f6; --panel-2: #e5eef1; --text: #17232b; --muted: #546b78; --edge: #ccdbe1; --accent: #087c62; --accent-2: #0769a4; --code: #f0f5f7; }
  h1, h2, h3 { color: #0b151b; }
}