.engineering-main { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.engineering :is(section, article, li, nav, div) { min-width: 0; }
.engineering :is(a, button, summary, [tabindex]):focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.engineering-skip { position: absolute; top: 12px; left: 24px; padding: 12px; background: var(--surface); z-index: 100; transform: translateY(-200%); }
.engineering-skip:focus { transform: translateY(0); }
.engineering-hero { padding: 72px 0 48px; }
.engineering h1 { font: 480 clamp(42px, 6vw, 72px)/1.07 var(--font-display); letter-spacing: -.045em; margin: 20px 0 28px; }
.engineering h1 em { color: var(--accent); font-weight: inherit; }
.engineering h2 { font: 500 clamp(30px, 4vw, 42px)/1.2 var(--font-display); letter-spacing: -.025em; margin: 0 0 24px; max-width: 900px; }
.engineering h3 { font: 650 19px/1.4 var(--font-body); margin: 0 0 18px; }
.engineering p { line-height: 1.8; max-width: 95ch; }
.engineering-lead { font-size: 19px; max-width: 70ch !important; }
.engineering .eyebrow { font-size: 12px; }
.engineering-index { display: flex; flex-wrap: wrap; gap: 12px 24px; padding-top: 24px; font-size: 15px; }
.engineering a:not(.button, .brand, .theme-toggle) { text-decoration: underline; text-underline-offset: 4px; }
.engineering-section { padding: 48px 0; border-top: 1px solid var(--line-strong); scroll-margin-top: 24px; }
.engineering-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin: 32px 0; }
.engineering-grid article { padding: 28px; background: var(--surface-soft); border: 1px solid var(--line-strong); border-radius: 8px; }
.engineering-grid p { font-size: 15px; }
.engineering-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; list-style: none; padding: 0; margin: 32px 0; counter-reset: flow; }
.engineering-flow li { border-top: 2px solid var(--accent); padding-top: 18px; counter-increment: flow; }
.engineering-flow strong { display: block; font-size: 17px; margin-bottom: 10px; }
.engineering-flow strong::before { content: counter(flow, decimal-leading-zero) " / "; color: var(--accent); }
.engineering-flow span { color: var(--muted); font-size: 14px; line-height: 1.7; }
.engineering-notice, .engineering-note { padding: 24px; border-left: 3px solid var(--accent); background: var(--surface-soft); margin: 28px 0; font-size: 14px; line-height: 1.8; }
.engineering details { margin: 24px 0; border: 1px solid var(--muted); border-radius: 6px; padding: 20px 24px; }
.engineering summary { cursor: pointer; font-size: 16px; font-weight: 600; }
.engineering details p { font-size: 15px; }
.engineering pre { overflow-x: auto; max-width: 100%; padding: 20px; font-size: 13px; line-height: 1.9; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); }
.engineering code { overflow-wrap: anywhere; font-size: .9em; }
.engineering pre code { overflow-wrap: normal; font-size: inherit; }
.engineering-table { overflow-x: auto; border: 1px solid var(--muted); border-radius: 6px; margin: 28px 0; }
.engineering table { width: 100%; border-collapse: collapse; min-width: 630px; font-size: 15px; }
.engineering caption { text-align: left; padding: 18px 20px; font-weight: 600; background: var(--surface-soft); }
.engineering :is(th, td) { padding: 18px 20px; border-top: 1px solid var(--line-strong); text-align: left; }
.engineering th { font-size: 13px; }
.engineering td code { white-space: nowrap; }
.engineering-downloads { padding: 28px; border: 1px solid var(--line-strong); border-radius: 8px; }
.engineering-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 24px; }
.engineering .button { font-size: 14px; min-height: 48px; }
.engineering-references { padding-left: 24px; }
.engineering-references li { padding: 12px 0; }
.engineering-references p { margin: 8px 0; font-size: 15px; }
.engineering-references a code { font-size: 15px; }
@media (max-width: 760px) {
  .engineering-main { padding: 0 24px; }
  .engineering-hero { padding-top: 44px; }
  .engineering-lead { font-size: 17px; }
  .engineering-grid, .engineering-flow { grid-template-columns: 1fr; gap: 20px; }
  .engineering-grid article, .engineering-downloads { padding: 22px; }
  .engineering details { padding: 18px; }
  .engineering-section { padding: 36px 0; }
  .engineering pre { font-size: 12px; padding: 14px; }
  .engineering .site-header { gap: 14px; }
  .engineering .site-header nav { flex-wrap: wrap; }
  .engineering-links { flex-direction: column; align-items: stretch; }
  .engineering table { min-width: 0; }
  .engineering thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .engineering tbody, .engineering tbody tr { display: grid; }
  .engineering tbody tr { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .engineering tbody th { grid-column: 1 / -1; background: var(--surface-soft); }
  .engineering td { display: block; padding: 16px 18px; }
  .engineering td::before { content: attr(data-label); display: block; margin-bottom: 7px; color: var(--muted); font-size: 12px; font-weight: 600; }
  .engineering caption { display: block; font-size: 14px; line-height: 1.7; }
}