/* Flyer landing page: one static page, no JavaScript. System fonts, fluid widths, dark theme. */
:root {
  color-scheme: dark;
  --bg: #0b0c12;
  --bg-2: #12141d;
  --ink: #eceef6;
  --ink-2: #a9b0c4;
  --rule: rgb(236 238 246 / 0.16);
  --accent: #ffc45a;
  --accent-ink: #1a1305;
  --link: #8fd8ff;
  --gutter: clamp(20px, 4.5vw, 120px);
  --maxw: 2240px;
  --gap: clamp(20px, 2.4vw, 40px);
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: ui-serif, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; font-size: 100%; }
@media (min-width: 1600px) { html { font-size: 112.5%; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 1.0625rem/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--link); outline-offset: 3px; border-radius: 3px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 8px; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
section { padding-block: clamp(48px, 7vw, 120px); }
section + section { border-top: 1px solid var(--rule); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.12; letter-spacing: -0.01em; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 5.6vw, 5.25rem); }
h2 { font-size: clamp(2.25rem, 4.4vw, 4.25rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1em; }
.eyebrow { font: 600 0.8125rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 1rem; }
.lede { font-size: clamp(1.15rem, 1.6vw, 1.5rem); color: var(--ink-2); max-width: 60ch; }
.muted { color: var(--ink-2); }
.small { font-size: 0.9375rem; color: var(--ink-2); }

/* Header */
.top { position: sticky; top: 0; z-index: 5; background: rgb(11 12 18 / 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; }
.brand { font: 700 1.25rem/1 var(--serif); color: var(--ink); text-decoration: none; }
.brand b { color: var(--accent); font-weight: 700; }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 20px; align-items: center; }
.top nav a { color: var(--ink-2); text-decoration: none; font-size: 0.9375rem; padding: 6px 2px; }
.top nav a:hover { color: var(--ink); }
.top nav .go { color: var(--accent-ink); background: var(--accent); padding: 8px 16px; border-radius: 999px; font-weight: 600; }
.top nav .go:hover { color: var(--accent-ink); filter: brightness(1.08); }
@media (max-width: 720px) { .top nav a:not(.go) { display: none; } }

/* Hero */
.hero { padding-block: clamp(32px, 5vw, 88px); }
.hero-grid { display: grid; gap: var(--gap); align-items: center; }
@media (min-width: 1000px) { .hero-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); } }
.hero figure, .plate { margin: 0; }
.frame { border-radius: 6px; box-shadow: 0 0 0 1px var(--rule), 0 24px 60px rgb(0 0 0 / 0.45); background: var(--bg-2); width: 100%; }
figcaption { margin-top: 0.75rem; font-size: 0.9375rem; color: var(--ink-2); }
figcaption strong { color: var(--ink); }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5rem; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 600; text-decoration: none; border: 1px solid var(--rule); color: var(--ink); }
.btn:hover { border-color: var(--ink-2); color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); color: var(--accent-ink); }

/* Credit band */
.credit { background: var(--bg-2); border-block: 1px solid var(--rule); padding-block: clamp(32px, 4vw, 64px); }
.credit h2 { font-size: clamp(1.4rem, 2.2vw, 2rem); }
.credit p { max-width: 90ch; }
.credit p:last-child { margin-bottom: 0; }

/* Result */
.result-grid { display: grid; gap: var(--gap); margin-top: 1.5rem; align-items: center; }
@media (min-width: 1000px) { .result-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.chips { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 1.25rem 0 0; }
.chips li { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--accent); color: var(--accent); font-weight: 600; }
.chips li.base { border-color: var(--rule); color: var(--ink-2); }
.big { font: 600 clamp(2.4rem, 5vw, 4rem)/1 var(--serif); color: var(--accent); }

/* Picture grids */
.grid { display: grid; gap: var(--gap); margin-top: 2rem; grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1500px) { .grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.steps { display: grid; gap: var(--gap); margin: 2rem 0 0; padding: 0; list-style: none; counter-reset: s; grid-template-columns: 1fr; }
@media (min-width: 700px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1300px) { .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.steps li { --c: #ffd98a; counter-increment: s; padding-top: 1rem; border-top: 2px solid var(--c, var(--accent)); }
.steps li::before { content: counter(s); font: 600 0.875rem/1 var(--mono); color: #ffd98a; display: block; margin-bottom: 0.5rem; }
.steps h3 { margin-bottom: 0.25em; color: var(--c, var(--ink)); }
.shots { display: grid; gap: var(--gap); margin-top: 2rem; }
@media (min-width: 1500px) { .shots { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Text columns */
.cols { display: grid; gap: var(--gap); margin-top: 1.5rem; }
@media (min-width: 1000px) { .cols { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
ul.plain { padding-left: 1.2em; margin: 0 0 1em; }
ul.plain li { margin-bottom: 0.5em; }
ol.cite { padding-left: 1.4em; font-size: 0.9375rem; color: var(--ink-2); }
ol.cite li { margin-bottom: 0.5em; }
details { margin-top: 1rem; }
summary { cursor: pointer; font-weight: 600; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }
pre { background: var(--bg-2); border: 1px solid var(--rule); border-radius: 6px; padding: 16px 20px; overflow-x: auto; font: 0.9375rem/1.6 var(--mono); }

footer { padding-block: 40px; border-top: 1px solid var(--rule); color: var(--ink-2); font-size: 0.9375rem; }

pre.prompt { white-space: pre-wrap; overflow-wrap: anywhere; }

/* Result charts */
.charts { display: grid; gap: var(--gap); }
.chart { margin: 0; padding: 20px 22px; background: var(--bg-2); border: 1px solid var(--rule); border-radius: 8px; }
.chart-title { margin: 0 0 14px; color: var(--ink); font-weight: 600; font-size: 1rem; }
.chart-title span { color: var(--ink-2); font-weight: 400; font-size: 0.875rem; }
.bar-row, .diverge li { display: grid; grid-template-columns: minmax(120px, 11em) 1fr 3.5em; align-items: center; gap: 12px; padding: 6px 0; }
.diverge { list-style: none; margin: 0 0 10px; padding: 0; }
.dl { font-size: 0.9375rem; }
.dv { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.dt { position: relative; display: block; height: 16px; background: rgb(236 238 246 / 0.06); border-radius: 3px; }
.db { position: absolute; top: 0; bottom: 0; border-radius: 3px; }
.bar-row .db { left: 0; width: var(--w); }
.db.base { background: #6d7490; }
.db.blend { background: var(--accent); }
.diverge .dt::after { content: ""; position: absolute; left: 50%; top: -3px; bottom: -3px; width: 1px; background: var(--ink-2); opacity: 0.6; }
.diverge .db.pos { left: 50%; width: var(--w); background: var(--accent); }
.diverge .db.neg { right: 50%; width: var(--w); background: #ff6e96; }
@media (max-width: 560px) {
  .bar-row, .diverge li { grid-template-columns: 1fr 3.5em; gap: 4px 12px; }
  .dl { grid-column: 1 / -1; }
}

/* Result: copy on the left, chart on the right, both sharing the page's edges */
.result-grid { align-items: stretch; }
.result-grid > div { display: flex; flex-direction: column; justify-content: center; }
.result-grid > div > p:not(.small) { font-size: clamp(1.25rem, 1.9vw, 1.75rem); line-height: 1.5; color: var(--ink); max-width: 30em; margin: 0; }
.result-grid .chart { width: 100%; max-width: none; margin: 0; display: flex; flex-direction: column; justify-content: center; }
@media (min-width: 1000px) { .result-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 640px); gap: clamp(32px, 5vw, 96px); } }
.answer { margin-top: clamp(40px, 5vw, 80px); }
.answer h3 { font-size: clamp(1.6rem, 2.6vw, 2.4rem); }
.result-grid > div { justify-content: flex-start; }
.result-grid { margin-top: 1rem; }
@media (min-width: 1000px) { #how .cols { grid-template-columns: minmax(0, 1fr) minmax(0, 640px); gap: clamp(32px, 5vw, 96px); } }

/* Each big section gets its own pastel: divider line and big title (the small label stays white) */
#how { --c: #ffd98a; }
#drawings { --c: #ffb4c6; }
#app { --c: #a9e5c8; }
#limits { --c: #a9d6ff; }
#credits { --c: #cdb9ff; }
#how, #drawings, #app, #limits, #credits { border-top: 3px solid var(--c); }
#how .eyebrow, #drawings .eyebrow, #app .eyebrow, #limits .eyebrow, #credits .eyebrow { color: var(--ink); }
#how > .wrap > h2, #drawings > .wrap > h2, #app > .wrap > h2, #limits > .wrap > h2, #credits > .wrap > h2 { color: var(--c); }