:root {
  color-scheme: light;
  --paper: #f3efe7;
  --paper-deep: #e9e3d8;
  --ink: #151411;
  --muted: #655f56;
  --line: #c9c1b4;
  --line-strong: #8f877b;
  --accent: #e64a24;
  --accent-dark: #a92f15;
  --code: #191815;
  --code-ink: #f8f4ec;
  --serif: "Literata", "Iowan Old Style", "Times New Roman", serif;
  --sans: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --page: 1180px;
  --gutter: clamp(20px, 4vw, 52px);
}

* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration-color: var(--line-strong); text-underline-offset: 4px; }
a:hover { color: var(--accent-dark); text-decoration-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.shell { width: min(100% - (var(--gutter) * 2), var(--page)); margin-inline: auto; }
.skip-link { position: fixed; left: 18px; top: 12px; z-index: 10; transform: translateY(-150%); padding: 9px 12px; background: var(--ink); color: var(--paper); font: 600 12px var(--mono); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.site-header__inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.wordmark { display: inline-flex; align-items: baseline; gap: 5px; color: var(--ink); text-decoration: none; }
.wordmark__gorgeous { font: 700 22px var(--serif); letter-spacing: -0.035em; }
.wordmark__gpt { font: 600 13px var(--mono); letter-spacing: 0.04em; }
.nav { display: flex; align-items: center; gap: 24px; font: 600 11px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
.nav a { text-decoration: none; }
.nav .button { padding: 10px 14px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); }
.hero { padding: clamp(64px, 10vw, 132px) 0 clamp(52px, 8vw, 92px); border-bottom: 1px solid var(--line-strong); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(270px, 0.75fr); gap: clamp(48px, 9vw, 128px); align-items: end; }
.eyebrow, .section-index { margin: 0; color: var(--accent-dark); font: 600 11px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
h1 { max-width: 12ch; margin: 18px 0 0; font: 500 clamp(54px, 8vw, 106px)/0.92 var(--serif); letter-spacing: -0.065em; }
.hero__copy { margin: 0; color: var(--muted); font-size: clamp(18px, 2.2vw, 23px); line-height: 1.48; }
.endpoint { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); display: grid; gap: 8px; }
.endpoint dt, .ledger dt { color: var(--muted); font: 600 10px var(--mono); letter-spacing: 0.07em; text-transform: uppercase; }
.endpoint dd { margin: 0; font: 500 13px var(--mono); overflow-wrap: anywhere; }
.section { padding: clamp(66px, 9vw, 112px) 0; border-bottom: 1px solid var(--line-strong); }
.section__heading { display: grid; grid-template-columns: 0.32fr 1fr; gap: clamp(28px, 7vw, 90px); margin-bottom: clamp(38px, 6vw, 70px); }
h2 { max-width: 18ch; margin: 0; font: 500 clamp(38px, 5vw, 64px)/1 var(--serif); letter-spacing: -0.05em; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); }
.step { min-height: 260px; padding: 28px 28px 34px 0; border-bottom: 1px solid var(--line); }
.step + .step { padding-left: 28px; border-left: 1px solid var(--line); }
.step::before { counter-increment: step; content: "0" counter(step); color: var(--accent-dark); font: 600 11px var(--mono); }
.step h3 { margin: 72px 0 10px; font: 500 26px/1.1 var(--serif); letter-spacing: -0.03em; }
.step p { margin: 0; color: var(--muted); }
code { font-family: var(--mono); font-size: 0.88em; }
.examples { display: grid; gap: 16px; }
details { border-top: 1px solid var(--line-strong); }
details:last-child { border-bottom: 1px solid var(--line-strong); }
summary { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0; cursor: pointer; list-style: none; font: 600 12px var(--mono); letter-spacing: 0.05em; text-transform: uppercase; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); }
details[open] summary::after { content: "−"; }
.code-wrap { position: relative; margin: 0 0 24px; border: 1px solid var(--ink); background: var(--code); color: var(--code-ink); }
.code-head { display: flex; align-items: center; justify-content: space-between; min-height: 42px; padding: 0 14px; border-bottom: 1px solid #47443e; color: #c9c2b7; font: 600 10px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; }
.copy { border: 0; background: transparent; color: inherit; cursor: pointer; font: inherit; text-transform: uppercase; }
.copy:hover { color: #fff; }
pre { margin: 0; padding: 22px; overflow-x: auto; font: 13px/1.75 var(--mono); tab-size: 2; }
.client-note { margin: 0 0 22px; color: var(--muted); }
.ledger { margin: 0; border-top: 1px solid var(--line-strong); }
.ledger div { display: grid; grid-template-columns: 0.6fr 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.ledger dd { margin: 0; font: 500 13px var(--mono); overflow-wrap: anywhere; }
.ledger .accent { color: var(--accent-dark); }
.cta { display: grid; grid-template-columns: 1fr auto; gap: 36px; align-items: end; }
.cta p { max-width: 50ch; margin: 18px 0 0; color: var(--muted); }
.cta__links { display: flex; flex-wrap: wrap; gap: 12px; }
.cta__links a { padding: 13px 16px; border: 1px solid var(--ink); font: 600 11px var(--mono); letter-spacing: 0.05em; text-decoration: none; text-transform: uppercase; }
.cta__links a:first-child { background: var(--ink); color: var(--paper); }
.site-footer { padding: 38px 0; background: var(--paper-deep); }
.site-footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.site-footer p { margin: 0; color: var(--muted); font-size: 12px; }
@media (max-width: 820px) {
  .hero__grid, .section__heading, .cta { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: 0; padding: 24px 0 32px; }
  .step + .step { padding-left: 0; border-left: 0; }
  .step h3 { margin-top: 34px; }
  .nav a:not(.button) { display: none; }
}
@media (max-width: 560px) {
  .site-header__inner, .site-footer__inner { align-items: flex-start; flex-direction: column; padding-block: 18px; }
  .ledger div { grid-template-columns: 1fr; gap: 7px; }
  pre { padding: 16px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }