:root {
  --coal: #11100f;
  --archive: #201d18;
  --old-gold: #c5a15d;
  --oxide: #8f352d;
  --parchment: #e4d6bb;
  --ash: #8d8578;
  color-scheme: dark;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--parchment);
  background: var(--coal);
  scroll-behavior: smooth;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--coal); color: var(--parchment); }
a { color: inherit; }
button { font: inherit; }
.skip-link { position: fixed; z-index: 40; inset: .75rem auto auto .75rem; transform: translateY(-180%); padding: .65rem 1rem; color: var(--coal); background: var(--old-gold); }
.skip-link:focus { transform: none; }
.archive-head { min-height: 5rem; display: grid; grid-template-columns: 1fr auto 1fr; gap: 2rem; align-items: center; padding: .9rem 4vw; border-bottom: 1px solid #4c4438; background: #0c0b0a; }
.archive-mark { display: grid; grid-template-columns: auto auto; align-items: baseline; gap: 0 .4rem; width: max-content; text-decoration: none; }
.archive-mark span { color: var(--old-gold); font-size: 1.35rem; }
.archive-mark strong { font-size: 1.35rem; }
.archive-mark small { grid-column: 1 / -1; margin-top: .25rem; color: var(--ash); font: .58rem/1 ui-monospace, monospace; letter-spacing: .14em; }
.archive-head nav { display: flex; gap: 1.4rem; }
.archive-head nav a { color: #b9ad9a; font-size: .82rem; text-decoration: none; }
.archive-head nav a:hover, .archive-head nav a:focus-visible { color: var(--old-gold); }
.archive-head > p { justify-self: end; margin: 0; color: var(--ash); font: .7rem/1 ui-monospace, monospace; }
.archive-menu { display: none; }
.film-gate { min-height: 78vh; position: relative; display: grid; grid-template-columns: .35fr 1fr; overflow: hidden; border-bottom: 1px solid #4c4438; background: radial-gradient(ellipse at 72% 45%, #3b2d1d 0, var(--coal) 45rem); }
.film-gate__stamp { display: grid; place-content: center; border-inline-end: 1px solid #4c4438; text-align: center; }
.film-gate__stamp span { color: var(--old-gold); font: 800 clamp(5rem, 12vw, 12rem)/.8 "Arial Narrow", sans-serif; }
.film-gate__stamp b { font-size: 2rem; letter-spacing: .3em; }
.film-gate__stamp i { margin-top: 1rem; color: var(--ash); font: .65rem/1 ui-monospace, monospace; letter-spacing: .15em; }
.film-gate__copy { align-self: center; padding: clamp(4rem, 9vw, 9rem) 7vw; }
.archive-code, .era-spine header p, .feature-record > div > p:first-child, .dossier-wall header p, .restoration-bench header p, .filmstrip-timeline header p, .credit-ledger header p, .archive-questions header p, .source-vault > div > p:first-child { margin: 0 0 1.1rem; color: var(--old-gold); font: 700 .7rem/1.4 ui-monospace, monospace; letter-spacing: .17em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 14ch; font: 700 clamp(3.3rem, 7vw, 7.5rem)/.94 "Songti SC", "STSong", serif; letter-spacing: -.055em; }
.film-gate__copy > p:not(.archive-code) { max-width: 43rem; color: #b9ad9a; font-size: 1.1rem; line-height: 1.9; }
.film-gate__copy a { display: inline-block; margin-top: 1.6rem; color: var(--old-gold); font-weight: 800; text-underline-offset: .4rem; }
.film-gate__meter { position: absolute; inset: auto 0 0; display: flex; gap: 0; border-top: 1px solid #4c4438; animation: drift 18s linear infinite; }
.film-gate__meter span { min-width: 8.333%; padding: .65rem; border-inline-end: 1px solid #4c4438; color: var(--ash); font: .65rem/1 ui-monospace, monospace; }
@keyframes drift { 50% { transform: translateX(-2%); } }
.era-spine, .dossier-wall, .restoration-bench, .filmstrip-timeline, .credit-ledger, .archive-questions, .source-vault { padding: clamp(4rem, 7vw, 7rem) 5vw; }
.era-spine header, .dossier-wall header, .restoration-bench header, .filmstrip-timeline header, .credit-ledger header, .archive-questions header { display: flex; align-items: end; justify-content: space-between; }
h2 { font: 700 clamp(2.3rem, 4.8vw, 5rem)/1 "Songti SC", serif; letter-spacing: -.045em; }
.era-spine > div { display: grid; grid-template-columns: repeat(5, 1fr); border-block: 1px solid #4c4438; }
.era-spine button { min-height: 8rem; display: flex; flex-direction: column; justify-content: space-between; align-items: flex-start; padding: 1rem; border: 0; border-inline-end: 1px solid #4c4438; color: var(--parchment); background: transparent; cursor: pointer; }
.era-spine button:last-child { border: 0; }
.era-spine button span { color: var(--old-gold); font: .7rem/1 ui-monospace, monospace; }
.era-spine button[aria-pressed="true"] { color: var(--coal); background: var(--old-gold); }
.era-spine button[aria-pressed="true"] span { color: var(--oxide); }
.feature-record { display: grid; grid-template-columns: .42fr 1fr; min-height: 32rem; border-block: 1px solid #4c4438; background: var(--archive); }
.archive-stamp { display: grid; place-content: center; text-align: center; border-inline-end: 1px solid #4c4438; font-family: "Arial Narrow", "PingFang SC", sans-serif; letter-spacing: .12em; }
.archive-stamp span, .archive-stamp small { color: var(--ash); font-size: .65rem; }
.archive-stamp b { margin: 1rem 0; padding: 1rem; border: 2px solid var(--oxide); color: var(--oxide); font-size: 3rem; transform: rotate(-5deg); }
.feature-record > div:last-child { align-self: center; padding: 5vw; }
.feature-record > div:last-child > p { max-width: 48rem; color: #b9ad9a; line-height: 1.9; }
.feature-record blockquote { margin: 2rem 0 0; padding: 1rem 0 1rem 1.5rem; border-inline-start: 3px solid var(--old-gold); color: var(--old-gold); line-height: 1.8; }
.dossier-wall > div { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: #4c4438; border: 1px solid #4c4438; }
.archive-dossier { min-height: 19rem; padding: 1.5rem; background: var(--coal); }
.archive-dossier[hidden] { display: none; }
.archive-dossier header { display: flex; justify-content: space-between; }
.archive-dossier header span { color: var(--old-gold); font: .7rem/1 ui-monospace, monospace; }
.archive-dossier header em { color: var(--ash); font-size: .7rem; font-style: normal; }
.archive-dossier h3 { margin-top: 4rem; font: 700 1.7rem/1.1 "Songti SC", serif; }
.archive-dossier p { color: #b9ad9a; line-height: 1.75; }
.archive-dossier small { color: var(--ash); }
.restoration-bench { color: var(--coal); background: var(--parchment); }
.restoration-bench header p { color: var(--oxide); }
.restoration-bench ol { display: grid; grid-template-columns: repeat(4, 1fr); margin: 2rem 0 0; padding: 0; list-style: none; border-top: 1px solid var(--coal); }
.restoration-bench li { min-height: 17rem; display: flex; flex-direction: column; justify-content: space-between; padding: 1.4rem; border-inline-end: 1px solid #9f927e; }
.restoration-bench li:last-child { border: 0; }
.restoration-bench li > span { color: var(--oxide); font: 800 .75rem/1 ui-monospace, monospace; }
.restoration-bench li p { color: #5b5145; line-height: 1.7; }
.filmstrip-timeline { border-inline-start: 1px solid color-mix(in srgb, var(--old-gold), transparent 45%); background: var(--archive); }
.filmstrip-timeline ol { margin: 2rem 0 0 3rem; padding: 0; list-style: none; }
.filmstrip-timeline li { position: relative; display: grid; grid-template-columns: 5rem 1fr; gap: 2rem; padding: 1.7rem 0; border-top: 1px solid #4c4438; }
.filmstrip-timeline li::before { content: ""; position: absolute; left: -3.45rem; top: 1.8rem; width: .8rem; height: 1.2rem; background: var(--old-gold); }
.filmstrip-timeline li > span { color: var(--old-gold); font: .7rem/1 ui-monospace, monospace; }
.filmstrip-timeline li p { color: #b9ad9a; line-height: 1.75; }
.filmstrip-timeline li small { color: var(--ash); }
.credit-ledger > div { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #4c4438; }
.credit-ledger article { min-height: 15rem; padding: 1.5rem; border-inline-end: 1px solid #4c4438; }
.credit-ledger article:last-child { border: 0; }
.credit-ledger article span { color: var(--old-gold); font: .7rem/1 ui-monospace, monospace; }
.credit-ledger h3 { margin-top: 3.5rem; font: 700 1.6rem/1 "Songti SC", serif; }
.credit-ledger p { color: #b9ad9a; line-height: 1.7; }
.archive-questions { background: #0c0b0a; }
.archive-questions details { border-top: 1px solid #4c4438; }
.archive-questions details:last-child { border-bottom: 1px solid #4c4438; }
.archive-questions summary { padding: 1.2rem 0; cursor: pointer; font-weight: 800; }
.archive-questions details p { max-width: 54rem; color: #b9ad9a; line-height: 1.8; }
.source-vault { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; color: var(--coal); background: var(--old-gold); }
.source-vault > div > p:first-child { color: var(--oxide); }
.source-vault > div > p:last-child { line-height: 1.8; }
.source-vault ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--coal); }
.source-vault li { display: grid; grid-template-columns: 4rem 1fr; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid #7f663b; }
.source-vault li span { color: var(--oxide); font: 700 .7rem/1 ui-monospace, monospace; }
.source-vault a { overflow-wrap: anywhere; text-underline-offset: .3rem; }
.archive-foot { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: 2rem; padding: 2.5rem 5vw; background: #0c0b0a; }
.archive-foot p { color: var(--ash); line-height: 1.7; }
:focus-visible { outline: 3px solid var(--old-gold); outline-offset: 4px; }

@media (max-width: 800px) {
  .archive-head { grid-template-columns: 1fr auto; }
  .archive-head > p { display: none; }
  .archive-menu { display: inline-flex; padding: .55rem .8rem; border: 1px solid var(--old-gold); color: var(--parchment); background: transparent; }
  .has-js .archive-head nav { display: none; grid-column: 1 / -1; }
  .has-js .archive-head nav[data-open="true"] { display: flex; flex-wrap: wrap; padding-top: .8rem; }
  .film-gate { min-height: auto; grid-template-columns: 1fr; }
  .film-gate__stamp { min-height: 17rem; border-inline-end: 0; border-bottom: 1px solid #4c4438; }
  .film-gate__stamp span { font-size: 6rem; }
  .film-gate__copy { padding: 4.5rem 5vw 5rem; }
  h1 { font-size: clamp(3rem, 15vw, 5.2rem); }
  .era-spine > div { grid-template-columns: 1fr 1fr; }
  .era-spine button { border-bottom: 1px solid #4c4438; }
  .feature-record { grid-template-columns: 1fr; }
  .archive-stamp { min-height: 18rem; border-inline-end: 0; border-bottom: 1px solid #4c4438; }
  .dossier-wall > div { grid-template-columns: 1fr 1fr; }
  .restoration-bench ol { grid-template-columns: 1fr 1fr; }
  .restoration-bench li { border-bottom: 1px solid #9f927e; }
  .credit-ledger > div { grid-template-columns: 1fr; }
  .credit-ledger article { min-height: 12rem; border-inline-end: 0; border-bottom: 1px solid #4c4438; }
  .source-vault { grid-template-columns: 1fr; }
  .archive-foot { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .dossier-wall > div, .restoration-bench ol { grid-template-columns: 1fr; }
  .filmstrip-timeline ol { margin-left: 1rem; }
  .filmstrip-timeline li::before { display: none; }
  .filmstrip-timeline li { grid-template-columns: 4rem 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}