:root {
  --bg: #f2eee6; --fg: #1b1a17; --dim: #6f6962; --rule: #d8d1c4;
  --col: 40vw;
  --serif: 'Instrument Serif', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
html, body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
::selection { background: #1b1a17; color: var(--bg); }

#stage { position: fixed; top: 0; right: 0; width: calc(100vw - var(--col)); height: 100vh; display: block; cursor: default; }
#stage.hot { cursor: pointer; }

.top { position: fixed; top: 0; left: 0; width: var(--col); z-index: 3; display: flex; justify-content: space-between;
  padding: 24px 3vw 28px 5vw; font: 500 12px var(--mono); letter-spacing: .06em; color: var(--dim);
  background: linear-gradient(var(--bg) 55%, transparent); }
.top a { text-decoration: none; color: var(--fg); }

.rail { position: fixed; left: calc(var(--col) + 28px); top: 50%; transform: translateY(-50%); z-index: 3;
  display: flex; flex-direction: column-reverse; gap: 10px; }
.rail a { display: block; width: 22px; height: 8px; background: var(--c); opacity: .35; transition: opacity .3s, width .3s; }
.rail a.on { opacity: 1; width: 40px; }
.rail a:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; }

main { width: var(--col); position: relative; z-index: 2; }
section { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; padding: 96px 3vw 96px 5vw; }

.kicker { font: 500 12px var(--mono); color: var(--dim); letter-spacing: .1em; display: flex; gap: 12px; align-items: center; }
.kicker i { width: 28px; height: 10px; background: var(--c); display: inline-block; }

h1 { font: 400 clamp(54px, 6.4vw, 108px)/.92 var(--serif); margin: 18px 0 24px; letter-spacing: -.01em; }
h2 { font: 400 clamp(40px, 3.9vw, 62px)/1 var(--serif); margin: 16px 0 22px; }
h1 em, h2 em { font-style: italic; }
h3 { font: 500 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 8px; }

.lede { font-size: 18px; line-height: 1.6; margin: 0 0 8px; max-width: 34em; }
.hint { font: 12px var(--mono); color: var(--dim); margin-top: 36px; letter-spacing: .06em; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 34px 0 0; border-top: 1px solid var(--rule); padding-top: 18px; }
.stats dt { font: 400 46px/1 var(--serif); }
.stats dd { margin: 6px 0 0; font-size: 13px; color: var(--dim); line-height: 1.4; }

.roles { list-style: none; padding: 0; margin: 0 0 22px; border-left: 2px solid var(--c); }
.roles li { padding: 4px 0 8px 16px; }
.roles b { font-weight: 600; display: block; }
.roles span { font: 13px var(--mono); color: var(--dim); }

.points { margin: 0 0 22px; padding: 0 0 0 1.1em; max-width: 36em; }
.points li { font-size: 16px; line-height: 1.55; margin: 0 0 8px; }
.points li::marker { color: var(--dim); }

.tags { font: 13px var(--mono); color: var(--dim); border-top: 1px solid var(--rule); padding-top: 12px; margin: 0; line-height: 1.7; }

.toolbox .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 28px; border-top: 1px solid var(--rule); padding-top: 22px; }
.toolbox p { margin: 0; line-height: 1.55; font-size: 15px; }
.toolbox .grid > div:last-child { grid-column: 1 / -1; }

.cta { margin-top: 24px; }
.cta a { font: 400 36px var(--serif); text-decoration: none; border-bottom: 1px solid var(--fg); }
.cta a:hover { font-style: italic; }
footer { margin-top: 72px; font: 12px var(--mono); color: var(--dim); }

/* no WebGL: the text stands alone */
.no-gl #stage, .no-gl .rail { display: none; }
.no-gl main { width: auto; max-width: 760px; margin: 0 auto; }
.no-gl .top { width: 100%; }

@media (max-width: 860px) {
  :root { --col: 100vw; }
  /* stack pinned on top, text scrolls underneath it */
  #stage { width: 100vw; height: 42vh; height: 42svh; top: 0; z-index: 2; border-bottom: 1px solid var(--rule); }
  .top { width: 100%; padding: 14px 16px; background: none; }
  .rail { display: none; }
  main { width: 100%; padding-top: 42vh; padding-top: 42svh; z-index: 1; }
  section { min-height: 70vh; padding: 36px 16px 56px; border-top: 1px solid var(--rule); justify-content: flex-start;
    scroll-margin-top: 42vh; scroll-margin-top: 42svh; }
  .hero h1 { margin-top: 12px; }
  .hint { display: none; }
  .hero { border-top: 0; }
  .stats { grid-template-columns: 1fr; gap: 12px; }
  .stats div { display: flex; gap: 14px; align-items: baseline; }
  .toolbox .grid { grid-template-columns: 1fr; }
}