:root {
  color-scheme: light;
  --paper: #fff;
  --surface: #f5f5f7;
  --ink: #1d1d1f;
  --muted: #626268;
  --line: #dedee3;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  scroll-behavior: smooth;
  scrollbar-color: #a1a1a6 var(--surface);
  scrollbar-width: thin;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); -webkit-font-smoothing: antialiased; }
::selection { background: #dedee3; color: var(--ink); }
a { color: inherit; text-underline-offset: .22em; text-decoration-thickness: 1px; overflow-wrap: anywhere; -webkit-tap-highlight-color: transparent; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 3px; }
.editorial-shell { width: min(1220px, 100%); margin-inline: auto; padding-inline: 44px; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 10; padding: 12px 18px; border-radius: 8px; background: var(--ink); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.editorial-topbar { position: relative; border-bottom: 1px solid var(--line); background: var(--paper); }
.editorial-nav { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 88px; }
.editorial-brand { display: inline-flex; align-items: center; flex-shrink: 0; gap: 10px; text-decoration: none; white-space: nowrap; }
.editorial-brand strong { font-size: 22px; font-weight: 650; letter-spacing: -.02em; }
.editorial-brand span { margin-left: 3px; color: var(--muted); font-size: 13px; }
.editorial-nav nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 28px; }
.editorial-nav nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); font-size: 13px; font-weight: 500; line-height: 1.5; text-decoration: none; }
.editorial-nav nav a[aria-current="page"], .editorial-nav nav a:hover { color: var(--ink); }
.editorial-nav nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 7px; }
main:focus { outline: 0; }
.publication-header { max-width: 900px; padding-block: 88px 62px; }
h1 { margin: 0; max-width: 17em; font-size: clamp(38px, 4.4vw, 60px); font-weight: 650; line-height: 1.22; letter-spacing: -.035em; text-wrap: balance; }
.title-qualifier { display: block; margin-top: 9px; color: var(--muted); font-size: .56em; font-weight: 500; letter-spacing: -.02em; }
.publication-intro { max-width: 36em; margin: 26px 0 22px; color: var(--muted); font-size: 19px; line-height: 1.85; text-wrap: pretty; }
.publication-meta { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.9; font-variant-numeric: tabular-nums; }
.reading-layout { display: grid; grid-template-columns: 205px minmax(0, 1fr); gap: 76px; align-items: start; padding-bottom: 104px; }
.reading-toc { position: sticky; top: 32px; padding-top: 26px; border-top: 1px solid var(--line); }
.reading-toc > p { margin: 0 0 13px; color: var(--ink); font-size: 12px; font-weight: 600; line-height: 1.7; }
.reading-toc ol { padding: 0; margin: 0; list-style: none; }
.reading-toc li { margin: 0; }
.reading-toc a { display: flex; align-items: center; min-height: 44px; padding-block: 9px; color: var(--muted); font-size: 12px; line-height: 1.8; text-decoration: none; }
.reading-toc a:hover { color: var(--ink); text-decoration: underline; }
.reading-body { min-width: 0; max-width: 68ch; color: #353539; font-size: 16px; line-height: 1.95; overflow-wrap: anywhere; }
.reading-section { margin: 0; padding-block: 36px 14px; border-top: 1px solid var(--line); scroll-margin-top: 28px; }
.reading-section + .reading-section { margin-top: 46px; }
h2 { margin: 0 0 24px; color: var(--ink); font-size: 28px; font-weight: 600; line-height: 1.45; letter-spacing: -.025em; text-wrap: balance; }
h3 { margin: 0 0 15px; color: var(--ink); font-size: 19px; font-weight: 600; line-height: 1.6; letter-spacing: -.015em; text-wrap: balance; }
p { margin: 0 0 21px; }
.reading-body strong { color: var(--ink); font-weight: 600; }
.reading-body ul { padding-left: 1.25em; margin: 22px 0 26px; }
.reading-body li { padding-left: .35em; margin-bottom: 14px; }
.reading-body li::marker { color: var(--muted); font-size: .75em; }
.reading-example { margin: 30px 0 24px; padding-block: 22px 1px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; line-height: 1.95; }
.reading-example h3 { font-size: 17px; }
.case-study { margin-top: 36px; }
.case-study + .case-study { margin-top: 38px; padding-top: 31px; border-top: 1px solid var(--line); }
.case-study h3 span { display: block; margin-top: 5px; color: var(--muted); font-size: 14px; font-weight: 400; letter-spacing: 0; }
.source-note { color: var(--muted); font-size: 12px; line-height: 2; }
.source-note a { text-decoration-color: #a1a1a6; }
.source-note a:hover { color: var(--ink); }
.film-record-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 7px; color: var(--ink); font-size: 13px; font-weight: 500; }
.source-note .film-record-link { display: table; }
.external-mark { white-space: nowrap; }
.table-wrap { max-width: 100%; margin: 30px 0; }
table { width: 100%; border-collapse: collapse; table-layout: fixed; color: #353539; font-size: 13px; line-height: 1.85; font-variant-numeric: tabular-nums; }
caption { margin-bottom: 13px; color: var(--muted); font-size: 12px; line-height: 1.8; text-align: left; }
th, td { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; overflow-wrap: anywhere; }
thead th { border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; font-weight: 500; }
tbody th { font-weight: 500; }
th:first-child { width: 39%; }
th:nth-child(2), td:nth-child(2) { width: 14%; }
th:last-child, td:last-child { padding-right: 0; }
table:has(th:nth-child(2):last-child) th:first-child { width: 80%; }
table:has(th:nth-child(2):last-child) th:nth-child(2), table:has(th:nth-child(2):last-child) td:nth-child(2) { width: 20%; text-align: right; }
.editorial-footer { padding-block: 46px 38px; border-top: 1px solid var(--line); background: var(--surface); }
.editorial-footer p { margin: 0 0 15px; color: var(--ink); font-size: 15px; line-height: 1.8; }
.editorial-footer nav { display: flex; flex-wrap: wrap; gap: 4px 26px; margin-bottom: 20px; }
.editorial-footer nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.editorial-footer small { display: block; max-width: 70ch; color: var(--muted); font-size: 11px; line-height: 1.9; }
@media (max-width: 1000px) {
  .editorial-shell { padding-inline: 32px; }
  .reading-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 44px; }
  .editorial-brand span { display: none; }
  .editorial-nav nav { gap: 8px 22px; }
  .publication-header { padding-top: 70px; }
}
@media (max-width: 760px) {
  .editorial-shell { padding-inline: 24px; }
  .editorial-nav { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 20px 10px; }
  .editorial-brand span { display: inline; }
  .editorial-nav nav { width: 100%; justify-content: space-between; gap: 5px 14px; }
  .editorial-nav nav a { font-size: 12px; }
  .publication-header { padding-block: 52px 38px; }
  h1 { font-size: clamp(34px, 7vw, 45px); line-height: 1.28; letter-spacing: -.03em; }
  .title-qualifier { margin-top: 8px; font-size: .62em; }
  .publication-intro { margin-top: 22px; font-size: 16px; line-height: 1.9; }
  .publication-meta { font-size: 11px; }
  .reading-layout { display: flex; flex-direction: column; gap: 30px; padding-bottom: 66px; }
  .reading-toc { position: static; width: 100%; padding-top: 21px; }
  .reading-toc > p { margin-bottom: 8px; }
  .reading-toc ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 22px; }
  .reading-toc a { padding-block: 10px; font-size: 12px; }
  .reading-body { width: 100%; font-size: 15px; line-height: 1.95; }
  .reading-section { padding-top: 27px; scroll-margin-top: 22px; }
  .reading-section + .reading-section { margin-top: 34px; }
  h2 { margin-bottom: 20px; font-size: 24px; }
  h3 { font-size: 18px; }
  .reading-body ul { padding-left: 1.2em; }
  .reading-body li { margin-bottom: 13px; padding-left: .15em; }
  .reading-example { margin-top: 26px; font-size: 13px; }
  .case-study + .case-study { margin-top: 29px; padding-top: 25px; }
  .source-note { font-size: 12px; }
  .source-note a { display: inline-block; min-height: 44px; padding-block: 8px; }
  .source-note .film-record-link { display: table; min-height: 44px; padding-block: 8px; }
  table { font-size: 12px; line-height: 1.9; }
  th, td { padding-block: 12px; padding-right: 8px; }
  th:first-child { width: 38%; }
  th:nth-child(2), td:nth-child(2) { width: 15%; }
  .editorial-footer { padding-block: 34px 30px; }
}
@media (max-width: 360px) {
  .editorial-shell { padding-inline: 20px; }
  .editorial-nav nav { gap: 4px 10px; }
  .editorial-nav nav a { font-size: 11px; }
  h1 { font-size: 33px; }
  .reading-toc ol { column-gap: 14px; }
  h2 { font-size: 23px; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
}
@media print {
  .editorial-topbar, .reading-toc, .editorial-footer, .skip-link { display: none; }
  .editorial-shell { width: 100%; padding: 0; }
  .publication-header { padding-block: 0 30px; }
  .reading-layout { display: block; padding-bottom: 0; }
  .reading-body { max-width: 100%; font-size: 11pt; }
  .reading-section { break-inside: auto; }
  h2, h3 { break-after: avoid; }
  a { text-decoration: underline; }
}