.exercise-shell { max-width: 1180px; min-width: 0; grid-template-columns: minmax(0, 1fr); }
.exercise-shell > * { min-width: 0; }
.exercise-shell :target { scroll-margin-top: 24px; }
.exercise-shell .exercise-hero { padding: clamp(24px, 5vw, 58px); background: radial-gradient(ellipse at 90% 8%, #e3d8ef 0, transparent 50%), #fffcf7; box-shadow: none; }
.exercise-hero-copy { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.exercise-hero h1 { font-size: clamp(36px, 4.7vw, 62px); }
.exercise-hero .pt-intro, .exercise-hero .pt-access { margin-inline: auto; max-width: 680px; }
.exercise-actions { display: flex; flex-wrap: wrap; gap: 12px 26px; justify-content: center; align-items: center; margin-top: 10px; }
.exercise-shell .pt-browser-link { background: #315eb8; }
.exercise-shell .pt-final .pt-browser-link { color: #fff; }
.exercise-shell .pt-text-link { min-height: 44px; padding-block: 10px; }
.exercise-media { width: 100%; max-width: 850px; margin: 0 auto; min-width: 0; }
.exercise-media > a { display: block; border-radius: 16px; overflow: hidden; background: #f3ede3; box-shadow: 0 18px 45px #43305e15, 0 1px 4px #43305e20; }
.exercise-media img { display: block; width: 100%; height: auto; }
.exercise-media picture { display: block; }
.exercise-media figcaption { max-width: 750px; margin: 12px auto 0; font-size: 13px; line-height: 1.7; color: #5c5247; }
.exercise-hero .pt-proof { margin-top: 28px; justify-content: center; flex-wrap: wrap; }
.exercise-breadcrumb { font-size: 13px; padding: 0 10px 24px; }
.exercise-breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; }
.exercise-breadcrumb li + li::before { content: '/'; padding-right: 10px; color: #776a5b; }
.exercise-jumps { display: flex; flex-wrap: wrap; gap: 6px 24px; padding: 24px 12px 0; font-size: 13px; font-weight: 650; }
.exercise-jumps a { padding-block: 12px; }
.exercise-shell .exercise-lead { max-width: 750px; font-size: 16px; line-height: 1.8; margin-top: 18px; color: #5b534a; }
.exercise-categories { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; margin-top: 34px; }
.exercise-categories article { border-top: 1px solid #cbbda9; padding-top: 20px; display: flex; flex-direction: column; align-items: flex-start; }
.exercise-shell .exercise-count { font-size: 12px; color: #725333; margin-bottom: 12px; font-weight: 700; }
.exercise-categories h3 { font-size: 21px; }
.exercise-categories h3 a { text-decoration: none; }
.exercise-categories article > p:not(.exercise-count) { font-size: 15px; line-height: 1.8; color: #5c5349; margin: 12px 0; }
.exercise-category-action { min-height: 44px; padding-block: 10px; margin-top: auto; font-size: 13px; font-weight: 700; }
.exercise-table-wrap { max-width: 100%; overflow-x: auto; margin-top: 28px; border: 1px solid #d6cbbb; border-radius: 14px; background: #fffcf7; }
.exercise-table-wrap:focus-visible { outline: 3px solid #a0642f; outline-offset: 4px; }
.exercise-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; line-height: 1.65; }
.exercise-table caption { text-align: left; padding: 16px 20px; font-size: 12px; color: #60564b; }
.exercise-table th, .exercise-table td { padding: 15px 20px; border-top: 1px solid #e1d8cc; }
.exercise-table thead { background: #ebe4d8; }
.exercise-table th[scope='row'] { font-weight: 600; min-width: 230px; }
.exercise-table td { white-space: nowrap; }
.exercise-table a { display: inline-block; min-height: 44px; padding-block: 10px; font-weight: 700; }
.exercise-directory { margin-top: 28px; }
.exercise-directory summary { cursor: pointer; padding: 16px 0; font-weight: 650; }
.exercise-shell .exercise-detail { padding: clamp(24px, 4vw, 46px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .85fr); gap: 50px; align-items: center; background: #ebe4d8; box-shadow: none; margin-bottom: 40px; }
.exercise-detail h2 { margin-top: 12px; }
.exercise-detail p:not(.pt-eyebrow), .exercise-context p { font-size: 16px; line-height: 1.85; color: #5b5146; margin-top: 20px; }
.exercise-media-mobile { max-width: 360px; }
.exercise-shell .pt-card p, .exercise-shell .pt-steps p, .exercise-shell .pt-faq details p { font-size: 15px; }
.exercise-context { max-width: 820px; }
@media (max-width: 800px) {
  .exercise-categories { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exercise-shell .exercise-detail { grid-template-columns: minmax(0, 1fr); gap: 28px; }
}
@media (max-width: 560px) {
  .exercise-shell .exercise-hero { padding: 28px 16px 22px; border-radius: 22px; }
  .exercise-hero-copy { margin-bottom: 26px; }
  .exercise-hero h1 { font-size: clamp(34px, 9vw, 44px); }
  .exercise-actions { gap: 0; flex-direction: column; }
  .exercise-actions .pt-text-link { margin-top: 5px; }
  .exercise-categories { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .exercise-jumps { column-gap: 18px; }
  .exercise-table th, .exercise-table td { padding: 12px 16px; }
  .exercise-hero .pt-proof { gap: 12px 20px; justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  .exercise-shell * { scroll-behavior: auto; }
}