.chapter-main { min-width: 0; padding: 58px clamp(28px, 5.5vw, 96px) 30px; }
.chapter-article { max-width: 900px; margin: 0 auto; }
.chapter-header { border-top: 7px solid var(--ink); padding-top: 22px; }
.chapter-kicker { color: var(--teal); font-size: 16px; font-weight: 700; margin-bottom: 17px; }
.chapter-title { font-size: clamp(36px, 3.85vw, 60px); line-height: 1.07; font-weight: 900; letter-spacing: -.035em; max-width: 19ch; }
.chapter-deck { margin-top: 23px; max-width: 62ch; font-size: 21px; line-height: 1.5; }
.assumption-box { margin: 35px 0 42px; padding: 24px 28px; background: var(--rose-paper); border: 2px solid var(--ink); border-left: 9px solid var(--coral); box-shadow: 7px 7px 0 var(--yellow); }
.assumption-label { font-size: 16px; font-weight: 700; margin-bottom: 9px; }
.assumption-question { font-family: var(--heading-font); font-size: 27px; line-height: 1.3; font-weight: 800; max-width: 46ch; }
.answer-marker { font-size: 16px; margin-top: 13px; }
.desk-still-life { margin: 0 0 42px; width: 100%; max-width: 736px; aspect-ratio: 3 / 2; background: var(--mint-paper); border: 2px solid var(--ink); overflow: hidden; position: relative; }
.desk-still-life::before { content: ""; position: absolute; width: 24%; aspect-ratio: 1; background: var(--coral); border: 2px solid var(--ink); border-radius: 50%; right: 9%; bottom: 12%; }
.desk-still-life::after { content: ""; position: absolute; width: 35%; height: 28%; background: var(--yellow); border: 2px solid var(--ink); left: 12%; bottom: 18%; }
.still-life-image { display: block; position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; font-size: 18px; color: var(--ink); background: var(--mint-paper); }
.idea-section { margin: 0 0 38px; max-width: 68ch; padding-top: 21px; border-top: 2px solid var(--ink); }
.idea-heading { font-size: 28px; line-height: 1.2; font-weight: 800; margin: 0 0 14px; max-width: 32ch; }
.chapter-paragraph { margin: 0 0 13px; font-size: 18px; }
.chapter-paragraph:last-child { margin-bottom: 0; }
@media (min-width: 1300px) {
  .chapter-main { padding-right: 9vw; }
}
@media (max-width: 900px) {
  .chapter-main { padding: 34px 24px 24px; }
  .chapter-title { font-size: clamp(36px, 7vw, 54px); }
  .chapter-deck { font-size: 19px; }
  .assumption-box { padding: 20px; margin-top: 27px; }
  .assumption-question { font-size: 24px; }
  .idea-heading { font-size: 26px; }
}
@media print {
  .chapter-main { padding: 0; }
  .chapter-title { font-size: 34px; }
  .desk-still-life { display: none; }
  .assumption-box { box-shadow: none; }
  .idea-section { break-inside: avoid; }
}