:root {
  color-scheme: light;
  --ink: #141414;
  --muted: #5c5c5c;
  --line: #e4e4e4;
  --bg: #ffffff;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body { font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.5; }
a { color: inherit; }
a:focus-visible, button:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid #111;
  outline-offset: 2px;
}
header.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
div.bar {
  max-width: 1120px;
  margin: 0 auto;
  min-height: 72px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
a.mark {
  color: #071226;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
nav.top { display: flex; flex-wrap: wrap; gap: 4px; }
a.nav { color: #222; text-decoration: none; font-size: 14px; padding: 8px 12px; }
a.nav:hover { color: #000; }
div.stage {
  min-height: calc(100vh - 72px);
  background: #05070b;
  color: #fff;
}
div.copy { max-width: 760px; padding: 14vh 7vw 10vh; }
p.eyebrow {
  margin: 0 0 18px;
  color: #b5b5b5;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
div.stage h1 {
  margin: 0 0 18px;
  max-width: 12em;
  font-size: 58px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.02;
}
div.stage p.deck { margin: 0; max-width: 38rem; color: #e6e6e6; font-size: 18px; }
div.stage p.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 0; }
a.brief, button.run {
  display: inline-block;
  padding: 14px 20px;
  border: 1px solid #111;
  background: #111;
  color: #fff;
  text-decoration: none;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
div.stage a.brief { border-color: #fff; background: #fff; color: #111; }
div.stage a.ghost { border-color: #fff; background: transparent; color: #fff; }
div.stage a.brief:hover { background: #e8e8e8; }
div.stage a.ghost:hover { background: #fff; color: #111; }
button.run:hover { background: #333; }
div.band, section.block {
  padding: 72px max(32px, calc((100% - 1120px) / 2));
}
div.points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin: 0;
  padding-top: 8px;
  border-top: 1px solid #111;
}
span.idx { display: block; margin-bottom: 16px; color: #666; font-size: 13px; letter-spacing: 0.16em; }
div.points h2, section.block h2 { margin: 0 0 10px; font-size: 28px; font-weight: 650; letter-spacing: -0.02em; }
div.points p, section.block p.lead { margin: 0; color: #333; }
section.block { background: #fff; }
section.alt { background: #f6f6f6; }
section.block h2 { margin-bottom: 12px; }
div.play {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  margin-top: 28px;
}
div.pane { background: #fff; border: 1px solid var(--line); min-width: 0; }
div.pane.head, div.tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: #fafafa;
}
div.tools span, div.pane.head span { font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #666; }
select, textarea, pre.out {
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px;
}
select { border: 1px solid var(--line); background: #fff; padding: 6px 8px; }
textarea {
  display: block;
  width: 100%;
  min-height: 280px;
  margin: 0;
  padding: 16px;
  border: 0;
  resize: vertical;
  color: #111;
  background: #fff;
}
pre.out {
  margin: 0;
  padding: 16px;
  min-height: 120px;
  white-space: pre-wrap;
  overflow: auto;
  background: #05070b;
  color: #f2f2f2;
}
pre.cpp { min-height: 220px; max-height: 420px; background: #fff; color: #141414; border-top: 1px solid var(--line); }
p.status { margin: 8px 0 0; color: #666; font-size: 13px; }
table.map { width: 100%; border-collapse: collapse; margin-top: 28px; }
table.map th, table.map td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.map th { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: #666; font-weight: 700; }
pre.quick {
  margin: 22px 0 0;
  padding: 16px;
  background: #05070b;
  color: #f2f2f2;
  overflow: auto;
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px;
}
footer.foot {
  padding: 28px max(32px, calc((100% - 1120px) / 2)) 48px;
  color: #666;
  font-size: 14px;
  border-top: 1px solid var(--line);
}
footer.foot a { color: #111; }
@media (max-width: 860px) {
  div.stage h1 { font-size: 40px; }
  div.points, div.play { grid-template-columns: 1fr; }
  div.copy, div.bar { padding-left: 20px; padding-right: 20px; }
}