/* Paper and ink, to sit beside the charts: the same cream, marker red and pencil grey they are drawn in. */
:root {
  --paper: #f3ede0;
  --sheet: #fbf7ee;
  --ink: #2b2930;
  --lead: #6a6055;
  --line: #ddd2bd;
  --red: #c8372f;
  --red-ink: #fff8f0;
  --sage: #93d3b0;
  --gold: #f4b829;
  --code-bg: #2b2930;
  --code-ink: #f1eadb;
  --code-dim: #9b9284;
  --serif: "Young Serif", Georgia, serif;
  --sans: "DM Sans", ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  --hand: "Gaegu", "Comic Sans MS", cursive;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  /* faint construction grid, like the charts' sheets */
  background-image:
    linear-gradient(rgba(106, 96, 85, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(106, 96, 85, .06) 1px, transparent 1px);
  background-size: 28px 28px;
}
a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
code { font-family: var(--mono); font-size: 0.86em; background: rgba(200, 55, 47, .07); color: #8f2a24; padding: 1px 5px; border-radius: 4px; }
b { font-weight: 700; }

.top, main, footer { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 22px; padding-bottom: 22px; flex-wrap: wrap;
}
.mark { font-family: var(--serif); font-size: 20px; color: var(--ink); letter-spacing: -0.01em; }
.mark::before { content: "▶"; color: var(--red); font-size: 12px; margin-right: 8px; vertical-align: 3px; }
.mark:hover { text-decoration: none; }
.top nav { display: flex; gap: 22px; flex-wrap: wrap; }
.top nav a { color: var(--lead); font-size: 15px; font-weight: 500; }
.top nav a:hover { color: var(--ink); text-decoration: none; }

section { padding: 80px 0; border-top: 1.5px dashed var(--line); }
section.hero { border-top: 0; padding-top: 56px; padding-bottom: 88px; }

.eyebrow, .hand { font-family: var(--hand); color: var(--lead); }
.eyebrow { font-size: 21px; margin: 0 0 14px; }
h1, h2 { font-family: var(--serif); font-weight: 400; color: var(--ink); }
h1 { font-size: clamp(36px, 5.6vw, 66px); line-height: 1.06; letter-spacing: -0.02em; margin: 0 0 26px; max-width: 18ch; }
h1 span { color: var(--red); }
h2 { font-size: clamp(28px, 3.4vw, 40px); letter-spacing: -0.01em; line-height: 1.12; margin: 0 0 18px; }
h3 { font-size: 18px; margin: 0 0 8px; font-weight: 700; }
.lede { font-size: 20px; color: #4a4540; max-width: 660px; margin: 0 0 36px; }

.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  border: 1.5px solid var(--ink); color: var(--ink); font-weight: 700; font-size: 15px; background: var(--sheet);
  box-shadow: 3px 4px 0 rgba(93, 108, 156, .28);
  transition: transform .15s, box-shadow .15s;
}
.button:hover { text-decoration: none; transform: translate(-1px, -1px); box-shadow: 4px 5px 0 rgba(93, 108, 156, .32); }
.button.primary { background: var(--red); border-color: var(--red); color: var(--red-ink); }

.intro { max-width: 720px; margin-bottom: 32px; }
.intro p, .split p { color: #4a4540; }

/* a chart: a page of its own, rendered at its design size and scaled to the column */
.chart { margin: 0 0 40px; position: relative; }
.chart iframe {
  display: block; width: 100%; height: min(88vh, 900px); border: 0;
  border-radius: 14px; background: #e6dcc8;
  transform-origin: 0 0;
}
.chart.fitted { height: calc(var(--h) + 44px); }
.chart.fitted iframe { position: absolute; top: 0; left: 0; }
.chart {
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 0 0 1.5px var(--ink), 5px 7px 0 rgba(93, 108, 156, .22);
  background: #e6dcc8;
}
.chart figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; height: 44px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 0 18px; background: var(--sheet); border-top: 1.5px solid var(--ink); font-size: 14px; font-weight: 500;
}
.chart:not(.fitted) figcaption { position: static; }
.chart figcaption .hand { font-size: 19px; }
.chart figcaption a::after { content: " ↗"; }

.flow ol {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.flow li, .facts > div {
  background: var(--sheet); border: 1.5px solid var(--ink); border-radius: 12px; padding: 22px;
  box-shadow: 3px 4px 0 rgba(93, 108, 156, .2);
}
.flow p, .facts p { color: var(--lead); font-size: 15px; margin: 0; }
.step { font-family: var(--hand); font-size: 22px; font-weight: 700; color: var(--red); display: block; margin-bottom: 6px; line-height: 1; }

.split { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: start; margin-bottom: 40px; }

.code {
  background: var(--code-bg); border-radius: 12px;
  padding: 20px 22px; margin: 0 0 24px; overflow-x: auto;
  font: 14px/1.7 var(--mono); color: var(--code-ink);
  box-shadow: 4px 5px 0 rgba(93, 108, 156, .25);
}
.code code { color: inherit; font-size: inherit; background: none; padding: 0; }
.code .c { color: var(--code-dim); }

.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.facts h3::before { content: "✓"; color: #2f6b4f; margin-right: 8px; }

.install > * { max-width: 820px; }
.install p { color: #4a4540; }
.note { font-size: 15px; color: var(--lead) !important; }

footer { border-top: 1.5px dashed var(--line); padding-top: 32px; padding-bottom: 48px; }
footer p { color: var(--lead); font-size: 14px; margin: 0 0 6px; }
footer .credit { font-family: var(--hand); font-size: 17px; }

@media (max-width: 860px) {
  .flow ol { grid-template-columns: 1fr 1fr; }
  .split, .facts { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .top, main, footer { padding: 0 16px; }
  .top { padding-top: 16px; padding-bottom: 16px; }
  .flow ol { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .lede { font-size: 18px; }
  .chart figcaption .hand { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}