:root {
  --bg: #F5F1EA;
  --bg-2: #EFE9DE;
  --ink: #0B0F0E;
  --ink-2: #1A2121;
  --muted: #5C6664;
  --line: #D9D2C4;
  --line-2: #C5BCAB;
  --teal: #0E8A89;
  --teal-deep: #0A5F5E;
  --orange: #E67E3C;
  --orange-deep: #C25E22;
  --signal: #E67E3C;
  --paper: #FBF8F2;
}

[data-theme="dark"] {
  --bg: #0B0F0E;
  --bg-2: #121918;
  --ink: #F1ECE0;
  --ink-2: #D9D2C4;
  --muted: #8A9491;
  --line: #1F2826;
  --line-2: #2B3634;
  --teal: #2DC8C6;
  --teal-deep: #5FE0DE;
  --orange: #FF9A55;
  --orange-deep: #FFB37B;
  --signal: #FF9A55;
  --paper: #0F1513;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}


.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-feature-settings: "ss01", "ss02"; }
.serif { font-family: 'Instrument Serif', 'Iowan Old Style', Georgia, serif; font-style: italic; font-weight: 400; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.container { max-width: 1320px; margin: 0 auto; padding: 0 32px; }
.rule { height: 1px; background: var(--line); width: 100%; }

.bracket-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.bracket-label::before { content: "[ "; color: var(--teal); }
.bracket-label::after { content: " ]"; color: var(--teal); }

.tick-row {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
  max-width: 1320px; margin: 0 auto; padding: 0 32px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 14px; letter-spacing: -0.01em; }
.nav-logo .mark { width: 22px; height: 22px; display: grid; place-items: center; }
.nav-links { display: flex; align-items: center; gap: 4px; font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.nav-link {
  padding: 6px 12px; border-radius: 2px; color: var(--ink-2);
  transition: background .15s, color .15s;
  letter-spacing: 0.01em;
}
.nav-link:hover { background: var(--bg-2); }
.nav-link.active { color: var(--ink); background: var(--bg-2); }
.nav-cta {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  padding: 8px 14px; background: var(--ink); color: var(--bg);
  border-radius: 2px; display: inline-flex; align-items: center; gap: 8px;
  transition: transform .15s, background .15s;
}
.nav-cta:hover { background: var(--teal-deep); }
.nav-cta .arrow { transition: transform .2s; }
.nav-cta:hover .arrow { transform: translateX(3px); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 2px;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 0.01em;
  border: 1px solid var(--ink);
  transition: all .15s;
  cursor: pointer;
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--teal-deep); border-color: var(--teal-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--ink); background: var(--bg-2); }
.btn-signal { background: var(--orange); border-color: var(--orange-deep); color: #fff; }
.btn-signal:hover { background: var(--orange-deep); border-color: var(--ink); }

.section { padding: 96px 0; border-bottom: 1px solid var(--line); position: relative; }
.section-header {
  display: grid; grid-template-columns: 200px 1fr; gap: 48px;
  padding-bottom: 48px;
  align-items: start;
}
.section-header .left { display: flex; flex-direction: column; gap: 12px; }
.section-header h2 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400; font-style: italic;
  font-size: 52px; line-height: 1.02; letter-spacing: -0.02em;
  max-width: 720px;
  color: var(--ink);
}
.section-header h2 em { color: var(--teal-deep); font-style: italic; }

.term {
  border: 1px solid var(--line-2);
  background: var(--paper);
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  overflow: hidden;
  position: relative;
}
.term-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 11px; color: var(--muted);
  background: var(--bg-2);
}
.term-head .dots { display: flex; gap: 5px; }
.term-head .dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--line-2); }
.term-head .dots span:nth-child(1) { background: var(--orange); }
.term-head .dots span:nth-child(2) { background: #D4B645; }
.term-head .dots span:nth-child(3) { background: var(--teal); }
.term-body { padding: 18px 20px; font-size: 13px; line-height: 1.7; }

.term .prompt { color: var(--teal-deep); }
.term .comment { color: var(--muted); }
.term .str { color: var(--orange-deep); }
.term .key { color: var(--ink); font-weight: 600; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.04em;
  padding: 3px 8px;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  color: var(--ink-2);
  background: var(--bg-2);
}
.tag.teal { border-color: var(--teal); color: var(--teal-deep); background: color-mix(in oklab, var(--teal) 10%, transparent); }
.tag.orange { border-color: var(--orange); color: var(--orange-deep); background: color-mix(in oklab, var(--orange) 10%, transparent); }
.tag.dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.gridbg {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  opacity: 0.5;
}

.tweaks {
  position: fixed; bottom: 20px; right: 20px; z-index: 100;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 3px;
  padding: 14px 16px;
  width: 280px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  box-shadow: 0 20px 50px -20px rgba(0,0,0,0.2);
}
.tweaks-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 10px; border-bottom: 1px solid var(--line); margin-bottom: 12px; font-size: 11px; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
.tweaks .row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; gap: 10px; }
.tweaks .row label { color: var(--muted); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; }
.tweaks .seg { display: inline-flex; border: 1px solid var(--line-2); border-radius: 2px; overflow: hidden; }
.tweaks .seg button { padding: 4px 8px; font-size: 11px; color: var(--ink-2); }
.tweaks .seg button.on { background: var(--ink); color: var(--bg); }

.blink { animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.fade-in { animation: fadeIn .45s ease-out both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.scroll-ticker {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: var(--paper);
}
.ticker-track {
  display: flex; gap: 48px; padding: 12px 0;
  white-space: nowrap;
  animation: ticker 50s linear infinite;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--muted);
}
.ticker-track span { display: inline-flex; align-items: center; gap: 10px; }
.ticker-track .sig { color: var(--orange-deep); }
@keyframes ticker { to { transform: translateX(-50%); } }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }