:root {
  color-scheme: light;
  --paper: #f5f3ed;
  --surface: #fffefa;
  --ink: #25382d;
  --muted: #536156;
  --line: #dedcd1;
  --accent: #245b46;
  --display: Georgia, serif;
  --body: Inter, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.6 var(--body); }
a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.wrap { width: min(1184px, calc(100% - 96px)); margin-inline: auto; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 92px; border-bottom: 1px solid var(--line); }
.brand { display: grid; gap: 3px; padding-block: 6px; font: 1.85rem/.94 var(--display); text-decoration: none; }
.brand small, .label { font: 700 .73rem/1.4 var(--body); letter-spacing: .15em; text-transform: uppercase; }
nav { display: flex; gap: clamp(12px, 3vw, 36px); }
nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .9rem; text-decoration: none; }
nav a:hover, .footer a:hover { text-decoration: underline; text-underline-offset: 5px; }
.hero { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(32px, 6vw, 90px); padding-block: 48px 60px; }
.label { margin: 0 0 16px; color: var(--accent); }
h1, h2, h3 { font-family: var(--display); font-weight: 400; }
h1 { margin: 0; font-size: clamp(65px, 8vw, 118px); letter-spacing: -.075em; line-height: .93; }
h1 em { color: var(--accent); }
h2 { margin: 0; font-size: clamp(42px, 5vw, 74px); letter-spacing: -.06em; line-height: 1.02; }
h3 { margin: 0 0 9px; font-size: clamp(23px, 2.45vw, 33px); letter-spacing: -.035em; line-height: 1.1; }
.lede { margin: 25px 0 23px; max-width: 33ch; color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.button { display: inline-flex; align-items: center; gap: 26px; min-height: 46px; padding: 10px 18px; border-radius: 4px; background: var(--accent); color: var(--surface); font-size: .92rem; font-weight: 700; text-decoration: none; }
.button:hover { background: var(--ink); }
.cover { margin: 0; }
.cover img { display: block; width: 100%; aspect-ratio: 1.27; object-fit: cover; border-radius: 48% 48% 5px 5px / 8% 8% 5px 5px; }
.cover figcaption { padding-block: 8px 0; color: var(--muted); font-size: .8rem; font-style: italic; }
.curriculum { padding-block: 62px 70px; background: var(--surface); border-block: 1px solid var(--line); }
.lessons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 32px; }
.lessons article { padding-top: 18px; border-top: 1px solid var(--line); }
.lessons p, .audience-copy p, .answers p { margin: 0; color: var(--muted); }
.audience, .questions-inner { display: grid; grid-template-columns: 1fr .72fr; gap: clamp(27px, 6vw, 88px); align-items: start; padding-block: 64px; }
.audience-copy { border-left: 1px solid var(--line); padding-inline-start: 24px; }
.audience-copy p + h3 { margin-top: 22px; }
.practice { background: var(--accent); color: var(--surface); }
.practice-inner { display: grid; grid-template-columns: 1fr .78fr; align-items: start; gap: clamp(26px, 6vw, 88px); padding-block: 64px; }
.practice .label { color: #dfeadd; }
.practice h2 { max-width: 15ch; }
.practice-intro { max-width: 42ch; margin: 20px 0 0; color: #e8eee7; }
.practice-steps { margin: 0; padding-inline-start: 2ch; }
.practice-steps li { padding: 12px 0 14px 8px; border-bottom: 1px solid #ffffff50; }
.practice-steps li::marker { font-weight: 700; font-variant-numeric: tabular-nums; }

.questions { background: #e7ecdf; border-block: 1px solid var(--line); }
.answers details { border-top: 1px solid #bbc6b6; }
.answers details:last-child { border-bottom: 1px solid #bbc6b6; }
.answers summary { min-height: 44px; padding-block: 14px; cursor: pointer; font-weight: 600; }
.answers p { padding: 0 0 16px 16px; }
.footer { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-block: 15px; font-size: .85rem; }
.footer a { display: inline-flex; align-items: center; min-height: 44px; }
.skip { position: absolute; z-index: 1; top: 6px; left: 8px; transform: translateY(-140%); background: var(--surface); padding: 8px; }
.skip:focus { transform: none; }
@media (max-width: 850px) {
  .wrap { width: calc(100% - 48px); }
  .hero { gap: 30px; }
  h1 { font-size: clamp(51px, 9vw, 78px); }
  .lessons { gap: 18px; }
}
@media (max-width: 640px) {
  .wrap { width: calc(100% - 36px); }
  .top { align-items: flex-start; flex-wrap: wrap; gap: 0 16px; padding-block: 12px 4px; }
  nav { gap: 17px; flex-wrap: wrap; }
  nav a { font-size: .82rem; }
  .hero, .lessons, .audience, .practice-inner, .questions-inner { grid-template-columns: 1fr; }
  .hero { padding-block: 32px 35px; }
  h1 { font-size: clamp(57px, 14vw, 84px); }
  .cover img { aspect-ratio: 1.18; }
  .curriculum, .audience, .practice-inner, .questions-inner { padding-block: 40px; }
  .audience-copy { padding-inline-start: 16px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }