:root {
  --bg: #0A0906;
  --sand: #E7C98A;
  --line: #C9A468;
  --muted: #8A7A56;
  --dim: #3A3226;
  --ink: #1A1610;
  --panel: #100e0b;
  --side: 240px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--sand);
  font-family: ui-sans-serif, system-ui, sans-serif;
  min-height: 100%;
}

a { color: var(--line); text-decoration: none; }
a:hover { color: var(--sand); }

.shell {
  display: grid;
  grid-template-columns: var(--side) 1fr;
  min-height: 100vh;
}

aside {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  border-right: 1px solid var(--dim);
  padding: 22px 16px 32px;
  background: var(--panel);
}

.brand {
  letter-spacing: 0.32em;
  font-size: 12px;
  font-weight: 600;
  color: var(--sand);
}
.brand span {
  display: block;
  margin-top: 6px;
  letter-spacing: 0.14em;
  font-size: 10px;
  color: var(--muted);
  font-weight: 400;
}

nav {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

nav a {
  display: block;
  padding: 7px 10px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  border: 1px solid transparent;
}

nav a.sub { padding-left: 20px; font-size: 11px; }

nav a.on,
nav a:hover {
  color: var(--sand);
  border-color: var(--dim);
}

.aside-links {
  margin-top: 28px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.aside-links a { display: block; padding: 4px 10px; color: var(--muted); }

main {
  padding: 36px 48px 80px;
  max-width: 820px;
}

.topbar {
  display: none;
}

h1 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
}
h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin: 36px 0 12px;
  color: var(--line);
}
h3 {
  font-size: 14px;
  letter-spacing: 0.14em;
  margin: 24px 0 8px;
  color: var(--muted);
  font-weight: 600;
}

.lede {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
  margin: 0 0 22px;
}

p, li { line-height: 1.6; font-size: 15px; }
p { margin: 0 0 14px; }

.note {
  border: 1px solid var(--dim);
  padding: 12px 14px;
  margin: 18px 0;
  color: var(--muted);
  font-size: 14px;
}
.note strong { color: var(--sand); font-weight: 600; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 18px 0 24px;
}

.card {
  border: 1px solid var(--dim);
  padding: 14px 16px;
}
.card h3 { margin: 0 0 8px; color: var(--sand); }
.card p { margin: 0; color: var(--muted); font-size: 13px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 10px 0 22px;
}
th, td {
  text-align: left;
  border-bottom: 1px solid var(--dim);
  padding: 8px 8px 8px 0;
  vertical-align: top;
}
th { color: var(--muted); font-weight: 500; letter-spacing: 0.1em; font-size: 11px; }
td code, p code, li code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12px;
  color: var(--line);
}

pre {
  background: #000;
  border: 1px solid var(--dim);
  padding: 14px 16px;
  overflow: auto;
  font-size: 12px;
  line-height: 1.5;
  color: var(--sand);
}

.page { display: none; }
.page.on { display: block; }

.crumbs {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 18px;
}

footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--dim);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--sand);
  padding: 8px 12px;
  letter-spacing: 0.14em;
  font-size: 11px;
}

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  aside {
    position: fixed;
    z-index: 20;
    width: min(280px, 86vw);
    transform: translateX(-110%);
    transition: transform 0.2s ease;
  }
  aside.open { transform: none; }
  .topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--dim);
    letter-spacing: 0.28em;
    font-size: 11px;
  }
  .menu-btn { display: block; }
  main { padding: 24px 16px 64px; }
  .grid { grid-template-columns: 1fr; }
}