:root {
  --text: #1e3434;
  --muted: #677570;
  --link: #145c55;
  --rule: #d9dfd6;
  --soft: #e9efea;
  --page-width: 1000px;
}
html { background: #f8f8f3; scroll-behavior: smooth; }
body { background: #f8f8f3; color: #344a4a; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; }
.page { padding: 0 40px 40px; }
a { text-underline-offset: 4px; }
a:focus-visible, summary:focus-visible { outline: 2px solid #145c55; outline-offset: 5px; }
.skip-link { position: absolute; top: -100px; left: 24px; z-index: 10; padding: 10px 18px; background: #fff; }
.skip-link:focus { top: 12px; }
.project-nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--rule); padding: 23px 0; margin-bottom: 58px; font-size: .86rem; }
.project-nav .wordmark { font-weight: 650; letter-spacing: -.02em; color: var(--text); }
.project-nav-links { display: flex; gap: 26px; align-items: center; }
.project-nav .nav-cv { border: 1px solid var(--rule); padding: 6px 12px; }
.back { margin-bottom: 24px; font-size: .8rem; letter-spacing: .05em; }
h1, h2 { color: var(--text); font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); max-width: 890px; line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; margin-bottom: 24px; }
.subtitle { max-width: 740px; color: #52655f; font-size: 1.08rem; line-height: 1.7; margin-bottom: 24px; }
.paper-links { font-size: .92rem; margin-bottom: 30px; line-height: 2; }
.page > header { padding-bottom: 14px; border-bottom: 1px solid var(--rule); }
.project-contents { padding: 20px 0; border-bottom: 1px solid var(--rule); font-size: .85rem; }
.project-contents summary { cursor: pointer; color: var(--link); font-weight: 600; }
.project-contents ol { columns: 2; gap: 36px; margin: 16px 0 2px; padding-left: 20px; }
.project-contents li { break-inside: avoid; margin: 4px 0; }
main { max-width: 800px; margin: 46px auto 0; }
section { margin-top: 48px; scroll-margin-top: 24px; }
h2 { font-size: 1.8rem; line-height: 1.25; margin-bottom: 20px; letter-spacing: -.02em; }
h3 { color: var(--text); font-weight: 600; }
strong { color: var(--text); }
.definition, .scope-note, .evidence { border-color: var(--rule); padding: 22px 24px; }
.definition { border-left-color: #145c55; }
.level { border-top-color: #b7c8be; }
.scope-note { background: #fff; }
.equation { max-width: 100%; overflow-x: auto; padding: 10px 0; }
mjx-container[display="true"] { max-width: 100%; overflow-x: auto; overflow-y: hidden; padding: 4px 0; }
.citation { border: 1px solid var(--rule); background: #eff2ec; border-radius: 2px; max-width: 100%; }
footer { margin-top: 64px; padding-top: 24px; font-size: .83rem; }
@media (max-width: 720px) {
  .page { padding: 0 24px 32px; }
  .project-nav { margin-bottom: 36px; gap: 14px; padding: 19px 0; }
  .project-nav-links { gap: 16px; }
  .project-nav .wordmark { max-width: 170px; line-height: 1.3; }
  .project-nav-links .nav-research { display: none; }
  .subtitle { font-size: 1rem; }
  main { margin-top: 36px; }
  h2 { font-size: 1.55rem; }
  .project-contents ol { columns: 1; }
  .two-level, .three-role, .evidence-grid { grid-template-columns: 1fr; }
  .definition, .scope-note, .evidence { padding: 18px; }
}
@media (max-width: 380px) { .page { padding-left: 18px; padding-right: 18px; } .project-nav { font-size: .79rem; } .project-nav-links { gap: 12px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { html, body { background: #fff; color: #000; } .project-nav, .project-contents, .skip-link { display: none; } .page { padding: 0; } h1 { font-size: 28pt; } }