:root {
  --ink: #161a18;
  --ink-soft: #313732;
  --paper: #eeeadd;
  --paper-strong: #f6f3e9;
  --paper-soft: #dcd7c8;
  --line: rgba(22, 26, 24, 0.19);
  --line-strong: rgba(22, 26, 24, 0.42);
  --green: #173f35;
  --green-soft: #346154;
  --cinnabar: #aa3828;
  --gold: #b98b3d;
  --shadow: 0 24px 70px rgba(24, 26, 22, 0.13);
  --radius: 14px;
  --content: min(1180px, calc(100vw - 48px));
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html[data-theme="dark"] {
  --ink: #eeeadd;
  --ink-soft: #b9b8ae;
  --paper: #141816;
  --paper-strong: #1b211e;
  --paper-soft: #242a26;
  --line: rgba(238, 234, 221, 0.15);
  --line-strong: rgba(238, 234, 221, 0.36);
  --green: #8aafa1;
  --green-soft: #5c8778;
  --cinnabar: #d85d45;
  --gold: #d5ac63;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-150%);
  padding: 8px 14px;
  color: #fff;
  background: #111;
  border-radius: 8px;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 64px;
  padding: 0 32px;
  color: #f5f0e5;
  background: linear-gradient(to bottom, rgba(8, 10, 9, 0.74), transparent);
  border-bottom: 1px solid transparent;
  transition: background 220ms ease, border-color 220ms ease, min-height 220ms ease;
}

.site-header.is-scrolled {
  min-height: 56px;
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border-color: var(--line);
  backdrop-filter: blur(16px);
}

.wordmark {
  justify-self: start;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 26px;
}

.site-nav a {
  position: relative;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="true"]::after {
  transform: scaleX(1);
}

.theme-toggle {
  justify-self: end;
  min-width: 48px;
  padding: 5px 9px;
  color: inherit;
  background: transparent;
  border: 1px solid currentColor;
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
}

.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: min(920px, 100svh);
  overflow: hidden;
  color: #f4efe4;
  background: #121714;
}

.hero-media,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  object-position: center 45%;
  animation: hero-in 1.2s cubic-bezier(.2,.8,.2,1) both;
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(5, 8, 7, 0.78) 0%, rgba(6, 9, 8, 0.38) 48%, rgba(6, 9, 8, 0.08) 73%),
    linear-gradient(0deg, rgba(5, 7, 6, 0.78) 0%, transparent 46%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(760px, calc(100vw - 48px));
  margin: 0 auto 17vh max(5vw, calc((100vw - 1180px) / 2));
}

.kicker {
  margin: 0 0 16px;
  color: var(--cinnabar);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero .kicker {
  color: #f0aa8d;
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(68px, 11vw, 152px);
  font-weight: 600;
  line-height: 0.92;
  letter-spacing: -0.06em;
}

.hero-subtitle {
  margin: 24px 0 0;
  font-family: var(--serif);
  font-size: clamp(20px, 2.5vw, 34px);
  letter-spacing: 0.04em;
}

.hero-deck {
  max-width: 650px;
  margin: 20px 0 0;
  color: rgba(244, 239, 228, 0.77);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  color: white;
  background: var(--cinnabar);
}

.text-link {
  font-size: 14px;
  text-underline-offset: 6px;
}

.generated-stamp {
  position: absolute;
  right: 32px;
  bottom: 28px;
  z-index: 2;
  margin: 0;
  color: rgba(244, 239, 228, 0.56);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.hero-index {
  position: absolute;
  right: 5vw;
  bottom: 17vh;
  z-index: 2;
  display: grid;
  gap: 10px;
  padding-left: 18px;
  border-left: 1px solid rgba(244, 239, 228, 0.3);
  color: rgba(244, 239, 228, 0.65);
  font-size: 12px;
}

.hero-index span {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.hero-index b {
  min-width: 34px;
  color: #f4efe4;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1;
}

.route-strip {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 6vw;
  align-items: center;
  width: var(--content);
  margin: 0 auto;
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.route-line {
  display: flex;
  align-items: center;
  min-width: 0;
}

.route-stop {
  flex: none;
  font-family: var(--serif);
  font-size: 14px;
}

.route-stop.is-current {
  color: var(--cinnabar);
  font-size: 22px;
  font-weight: 700;
}

.route-stop.is-next {
  color: var(--ink-soft);
}

.route-thread {
  flex: 1;
  min-width: 36px;
  height: 1px;
  margin: 0 14px;
  background: var(--line-strong);
}

.route-strip > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.chapter {
  width: var(--content);
  margin: 0 auto;
  padding: 132px 0;
}

.chapter + .chapter {
  border-top: 1px solid var(--line);
}

.chapter-heading {
  display: grid;
  grid-template-columns: 80px minmax(0, 800px);
  gap: 30px;
  margin-bottom: 76px;
}

.section-no {
  margin: 12px 0 0;
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
}

.chapter-heading h2,
.methodology h2,
.next-copy h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(38px, 5vw, 68px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.chapter-heading p:last-child {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.pair-stage {
  display: grid;
  grid-template-columns: 1.1fr 0.72fr 1.2fr;
  gap: 24px;
  align-items: center;
}

.photo-panel,
.bronze-hero figure,
.artifact-focus figure,
.ceramic-lead,
.identity-mural,
.essay-panel figure {
  margin: 0;
}

.photo-panel img,
.bronze-hero figure img,
.artifact-focus figure img,
.ceramic-lead img,
.identity-mural img,
.essay-panel figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--paper-soft);
  border-radius: var(--radius);
}

figcaption {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

figcaption span {
  display: block;
  color: var(--cinnabar);
  font-weight: 700;
}

.photo-tall img {
  aspect-ratio: 3 / 4;
}

.photo-wide {
  transform: translateY(64px);
}

.photo-wide img {
  aspect-ratio: 4 / 3;
}

.pair-argument {
  display: grid;
  align-content: center;
}

.pair-argument p:not(.pair-word) {
  margin: 12px 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.pair-word {
  margin: 0;
  color: var(--green);
  font-family: var(--serif);
  font-size: 72px;
  line-height: 1;
}

.pair-divider {
  height: 56px;
  margin: 10px 0 20px 34px;
  border-left: 1px solid var(--line-strong);
}

.pull-quote {
  max-width: 900px;
  margin: 136px 0 0 auto;
  padding: 38px 0 38px 60px;
  border-left: 1px solid var(--cinnabar);
}

.pull-quote p {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 50px);
  line-height: 1.45;
}

.bronze-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(310px, 0.65fr);
  gap: 48px;
  align-items: stretch;
}

.bronze-hero figure img {
  min-height: 640px;
}

.bronze-notes {
  display: grid;
  align-content: center;
}

.bronze-notes article {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.bronze-notes article:first-child {
  border-top: 1px solid var(--line);
}

.bronze-notes h3,
.artifact-copy h3,
.dance-horse h3,
.conservation-copy h3,
.yaozhou-copy h3,
.chai-dossier h3,
.export-note h3,
.world-note h3,
.essay-panel h3,
.method-note h3 {
  margin: 14px 0 8px;
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.3;
}

.bronze-notes p,
.artifact-copy p,
.ritual-copy p,
.conservation-copy p,
.yaozhou-copy p,
.export-note p,
.world-note p,
.essay-panel p,
.method-note p,
.watch-note p {
  color: var(--ink-soft);
}

.evidence-tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
}

.is-confirmed {
  color: var(--green);
}

.is-corrected {
  color: var(--cinnabar);
}

.is-question {
  color: var(--gold);
}

.is-metaphor {
  color: var(--ink-soft);
}

.ritual-grid {
  display: grid;
  grid-template-columns: 0.8fr 1fr 0.76fr;
  gap: 40px;
  align-items: center;
  margin-top: 112px;
}

.ritual-grid figure img {
  aspect-ratio: 4 / 5;
}

.ritual-grid .photo-offset {
  transform: translateY(72px);
}

.ritual-copy {
  padding: 12px 0;
}

.large-copy {
  color: var(--ink) !important;
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.25;
}

.source-link {
  display: inline-block;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  text-underline-offset: 5px;
}

.research-note,
.sources-details {
  margin-top: 120px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.research-note summary,
.sources-details summary {
  padding: 24px 4px;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
}

.research-note > div {
  max-width: 800px;
  padding: 0 4px 30px 110px;
  color: var(--ink-soft);
}

.artifact-focus {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.68fr);
  gap: 7vw;
  align-items: center;
}

.gold-bowl img {
  aspect-ratio: 5 / 4;
  object-position: center;
}

.artifact-copy {
  max-width: 440px;
}

.artifact-copy h3 {
  font-size: clamp(32px, 4vw, 52px);
}

.technique-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  justify-content: center;
  margin: 96px 0;
  padding: 26px 20px;
  color: var(--paper-strong);
  background: color-mix(in srgb, var(--green) 78%, #0a1713);
  border-radius: var(--radius);
}

html[data-theme="dark"] .technique-ribbon {
  color: #f2eee2;
  background: #183c33;
}

.technique-ribbon span {
  padding: 0 14px;
  border-right: 1px solid rgba(255, 255, 255, 0.28);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.6;
}

.technique-ribbon span:last-child {
  border: 0;
}

.metalwork-gallery {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 20px;
  align-items: start;
}

.metalwork-gallery figure:nth-child(2) {
  margin-top: 90px;
}

.metalwork-gallery img {
  aspect-ratio: 4 / 5;
}

.dance-horse {
  display: grid;
  grid-template-columns: 180px minmax(0, 720px);
  gap: 56px;
  align-items: start;
  margin: 140px 0 0 8vw;
  padding-top: 48px;
  border-top: 1px solid var(--line-strong);
}

.dance-horse-mark {
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 144px;
  line-height: 1;
}

.dance-horse h3 {
  margin-top: 0;
  font-size: clamp(30px, 4vw, 50px);
}

.caution {
  padding-left: 18px;
  border-left: 1px solid var(--cinnabar);
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 34px;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line-strong);
}

.timeline-item {
  position: relative;
  padding-top: 62px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 29px;
  left: 0;
  width: 11px;
  height: 11px;
  background: var(--paper);
  border: 2px solid var(--line-strong);
  border-radius: 50%;
}

.timeline-item.is-strong::before {
  border-color: var(--green);
  background: var(--green);
}

.timeline-item.is-new::before {
  border-color: var(--gold);
}

.timeline-date {
  margin: 0;
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
}

.timeline h3 {
  margin: 12px 0;
  font-family: var(--serif);
  font-size: 22px;
}

.timeline p:not(.timeline-date) {
  color: var(--ink-soft);
  font-size: 14px;
}

.source-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 40px;
}

.conservation-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.72fr);
  gap: 8vw;
  align-items: center;
  margin-top: 128px;
}

.conservation-split figure img {
  aspect-ratio: 4 / 3;
}

.ceramic-lead {
  position: relative;
}

.ceramic-lead img {
  width: 100%;
  max-height: 780px;
  aspect-ratio: 16 / 9;
}

.truth-table {
  margin: 96px 0;
  border-top: 1px solid var(--line-strong);
}

.truth-row {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr 110px;
  gap: 30px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.truth-row p,
.truth-row span {
  margin: 0;
}

.truth-row p:nth-child(2) {
  color: var(--ink-soft);
}

.truth-head {
  min-height: 48px;
  padding: 10px 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.truth-row .evidence-tag {
  justify-self: start;
}

.yaozhou-map {
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1.2fr);
  gap: 7vw;
  align-items: center;
  margin: 120px 0;
}

.yaozhou-map figure img {
  aspect-ratio: 4 / 3;
}

.chai-dossier {
  padding: 54px;
  color: #ece8dc;
  background: #173f35;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.chai-dossier .kicker {
  color: #e08269;
}

.chai-dossier h3 {
  max-width: 800px;
  margin-top: 0;
  font-size: clamp(32px, 4.2vw, 54px);
}

.chai-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  margin-top: 50px;
  padding-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.chai-columns p {
  color: rgba(236, 232, 220, 0.72);
}

.chai-label {
  color: #f1dfba !important;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.chai-verdict {
  max-width: 900px;
  margin-top: 38px;
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.7;
}

.chai-dossier .source-link {
  color: #f1dfba;
}

.export-note {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(320px, 0.76fr);
  gap: 8vw;
  align-items: center;
  margin-top: 130px;
}

.export-note figure img {
  aspect-ratio: 3 / 4;
}

.identity-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 7vw;
  align-items: center;
}

.identity-mural img {
  min-height: 650px;
}

.identity-lexicon article {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.identity-char {
  margin: 0;
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 48px;
  line-height: 1.2;
}

.identity-lexicon article > p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.directions {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 620px;
  margin: 128px 0;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.direction {
  position: absolute;
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 42px);
}

.direction.east { right: 7%; }
.direction.west { left: 7%; }
.direction.south { bottom: 7%; }
.direction.north { top: 7%; }

.direction-center {
  max-width: 430px;
  padding: 44px;
  text-align: center;
  background: var(--paper-strong);
  border-radius: 50%;
  box-shadow: 0 0 0 36px color-mix(in srgb, var(--paper-strong) 35%, transparent);
}

.direction-center b {
  font-family: var(--serif);
  font-size: 28px;
}

.direction-center p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.world-note {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.76fr);
  gap: 8vw;
  align-items: center;
}

.world-note figure img {
  aspect-ratio: 4 / 3;
}

.essay-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 7vw;
  align-items: center;
  margin-bottom: 140px;
}

.essay-panel:nth-of-type(even) {
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr);
}

.essay-panel figure img {
  aspect-ratio: 16 / 11;
  box-shadow: var(--shadow);
}

.essay-panel h3 {
  font-size: clamp(30px, 4vw, 50px);
}

.essay-no {
  color: var(--cinnabar) !important;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.watching-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 24px;
  align-items: start;
}

.method-note {
  padding: 32px 0;
  border-top: 1px solid var(--line-strong);
}

.method-note:nth-child(2) {
  margin-top: 90px;
}

.method-note > span {
  color: var(--cinnabar);
  font-family: var(--serif);
}

.method-note h3 {
  font-size: 30px;
}

.watch-note {
  max-width: 860px;
  margin: 100px 0 0 auto;
  padding: 34px 42px;
  background: var(--paper-strong);
  border-left: 3px solid var(--cinnabar);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.archive-tools {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: flex-end;
  margin-bottom: 30px;
}

.theme-filter-panel {
  display: grid;
  grid-template-columns: minmax(220px, 0.32fr) minmax(0, 1fr);
  gap: 42px;
  align-items: start;
  margin: 8px 0 38px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.theme-filter-intro > span {
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
}

.theme-filter-intro p {
  max-width: 320px;
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
}

.theme-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.theme-button {
  min-height: 38px;
  padding: 7px 13px;
  color: var(--ink-soft);
  background: var(--paper-strong);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
}

.theme-button b {
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 14px;
}

.theme-button:hover,
.theme-button.is-active {
  color: var(--ink);
  border-color: var(--cinnabar);
}

.theme-button.is-active {
  background: color-mix(in srgb, var(--cinnabar) 11%, var(--paper-strong));
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  min-height: 38px;
  padding: 6px 15px;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.filter-button:hover,
.filter-button.is-active {
  color: #fff;
  background: var(--cinnabar);
  border-color: var(--cinnabar);
}

.search-field {
  display: grid;
  gap: 7px;
  width: min(330px, 100%);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.search-field input {
  width: 100%;
  min-height: 42px;
  padding: 8px 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
}

.search-field input::placeholder {
  color: var(--ink-soft);
}

.archive-status {
  min-height: 26px;
  margin: 0 0 20px;
  color: var(--ink-soft);
  font-size: 13px;
}

.photo-grid {
  columns: 4 250px;
  column-gap: 16px;
}

.photo-card {
  position: relative;
  display: inline-block;
  width: 100%;
  margin: 0 0 16px;
  overflow: hidden;
  color: white;
  background: #242924;
  border: 0;
  border-radius: var(--radius);
  cursor: zoom-in;
  text-align: left;
  break-inside: avoid;
}

.photo-card img {
  width: 100%;
  height: auto;
  min-height: 180px;
  object-fit: cover;
  transition: transform 420ms cubic-bezier(.2,.7,.2,1), filter 420ms ease;
}

.photo-card:hover img {
  transform: scale(1.025);
  filter: brightness(0.72);
}

.photo-card-copy {
  position: absolute;
  inset: auto 0 0;
  padding: 70px 16px 14px;
  background: linear-gradient(transparent, rgba(5, 8, 6, 0.9));
  transform: translateY(42%);
  transition: transform 240ms ease;
}

.photo-card:hover .photo-card-copy,
.photo-card:focus-visible .photo-card-copy {
  transform: translateY(0);
}

.photo-card-copy b {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.35;
}

.photo-card-copy span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 10px;
}

.photo-grid.is-loading {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  columns: auto;
  gap: 16px;
}

.skeleton {
  min-height: 320px;
  border-radius: var(--radius);
  background: linear-gradient(105deg, var(--paper-soft) 35%, var(--paper-strong) 50%, var(--paper-soft) 65%);
  background-size: 250% 100%;
  animation: shimmer 1.4s infinite;
}

.archive-empty,
.archive-error {
  padding: 70px 20px;
  color: var(--ink-soft);
  text-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.next-field {
  position: relative;
  width: 100%;
  min-height: 760px;
  padding: 0;
  overflow: hidden;
  color: #f2eee4;
  border-top: 0 !important;
}

.next-field > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) brightness(0.35);
}

.next-field::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 12, 10, 0.84), rgba(8, 12, 10, 0.14));
}

.next-copy {
  position: relative;
  z-index: 2;
  width: min(760px, calc(100vw - 48px));
  margin-left: max(24px, calc((100vw - 1180px) / 2));
  padding: 130px 0;
}

.next-copy > p:not(.section-no) {
  max-width: 680px;
  color: rgba(242, 238, 228, 0.73);
}

.next-list {
  display: grid;
  gap: 0;
  max-width: 680px;
  margin: 40px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}

.next-list span {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 20px;
  padding: 18px 0;
  color: rgba(242, 238, 228, 0.68);
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 13px;
}

.next-list b {
  color: #f2eee4;
  font-family: var(--serif);
  font-size: 16px;
}

.next-copy .source-link {
  color: #f2d49c;
}

.methodology {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8vw;
  width: var(--content);
  margin: 0 auto;
  padding: 110px 0;
}

.methodology h2 {
  font-size: clamp(34px, 4.4vw, 58px);
}

.method-legend {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 36px;
}

.method-legend p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.method-legend .evidence-tag {
  margin-right: 8px;
}

.sources-details {
  grid-column: 1 / -1;
  margin-top: 30px;
}

.source-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px 26px;
  padding: 0 0 30px;
}

.source-columns a {
  color: var(--green);
  font-size: 13px;
  text-underline-offset: 4px;
}

.method-footnote {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: center;
  padding: 36px max(24px, calc((100vw - 1180px) / 2));
  color: rgba(242, 238, 228, 0.7);
  background: #101411;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  flex: none;
  color: #f2eee4;
  text-underline-offset: 5px;
}

.lightbox {
  width: min(1100px, calc(100vw - 40px));
  max-width: none;
  height: min(90vh, 900px);
  max-height: none;
  margin: auto;
  padding: 52px 72px 30px;
  color: #f3efe5;
  background: rgba(10, 13, 11, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.62);
}

.lightbox::backdrop {
  background: rgba(4, 6, 5, 0.84);
  backdrop-filter: blur(8px);
}

.lightbox figure {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  width: 100%;
  height: 100%;
  margin: 0;
}

.lightbox figure img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
}

.lightbox figcaption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin: 16px 0 0;
  color: rgba(243, 239, 229, 0.65);
}

.lightbox figcaption b {
  color: #f3efe5;
  font-family: var(--serif);
  font-size: 17px;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  color: #f3efe5;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  cursor: pointer;
}

.lightbox-close {
  top: 14px;
  right: 14px;
  padding: 5px 12px;
  font-size: 12px;
}

.lightbox-nav {
  top: 50%;
  width: 52px;
  height: 52px;
  transform: translateY(-50%);
  font-size: 11px;
}

.lightbox-nav.is-prev { left: 10px; }
.lightbox-nav.is-next { right: 10px; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.75,.2,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes hero-in {
  from { opacity: 0; transform: scale(1.035); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
  to { background-position-x: -250%; }
}

@media (max-width: 980px) {
  :root { --content: min(100% - 40px, 760px); }

  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0 20px;
  }

  .site-nav { display: none; }

  .hero-copy {
    margin-left: 24px;
    margin-bottom: 14vh;
  }

  .hero-index { display: none; }

  .route-strip,
  .pair-stage,
  .bronze-hero,
  .ritual-grid,
  .artifact-focus,
  .conservation-split,
  .yaozhou-map,
  .export-note,
  .identity-stage,
  .world-note,
  .essay-panel,
  .essay-panel:nth-of-type(even),
  .methodology {
    grid-template-columns: 1fr;
  }

  .route-strip { gap: 24px; }

  .pair-stage { gap: 50px; }
  .photo-wide { transform: none; }
  .pair-argument { grid-template-columns: 70px 1fr; }
  .pair-divider { display: none; }

  .bronze-hero figure img,
  .identity-mural img { min-height: 0; aspect-ratio: 4 / 3; }

  .ritual-grid { margin-top: 80px; }
  .ritual-grid figure img { aspect-ratio: 4 / 3; }
  .ritual-grid .photo-offset { transform: none; }

  .metalwork-gallery { grid-template-columns: repeat(2, 1fr); }
  .metalwork-gallery figure:nth-child(2) { margin-top: 0; }

  .dance-horse { margin-left: 0; }

  .timeline { grid-template-columns: 1fr; gap: 0; }
  .timeline::before { top: 0; bottom: 0; left: 5px; width: 1px; height: auto; }
  .timeline-item { padding: 0 0 56px 38px; }
  .timeline-item::before { top: 10px; left: 0; }

  .chai-columns { grid-template-columns: 1fr; gap: 16px; }

  .essay-panel figure { grid-row: auto; }
  .museums-panel figure,
  .journey-panel figure { grid-row: 1; }

  .watching-grid { grid-template-columns: 1fr; }
  .method-note:nth-child(2) { margin-top: 0; }

  .methodology { gap: 40px; }
}

@media (max-width: 680px) {
  :root { --content: calc(100% - 32px); }

  body { font-size: 15px; }
  html { scroll-padding-top: 58px; }

  .site-header { min-height: 54px; padding: 0 16px; }
  .wordmark { font-size: 15px; }

  .hero { min-height: 780px; }
  .hero-media { object-position: 58% center; }
  .hero-scrim { background: linear-gradient(0deg, rgba(5,8,7,.92), rgba(5,8,7,.12) 78%); }
  .hero-copy { width: calc(100vw - 32px); margin: 0 16px 104px; }
  .hero h1 { font-size: clamp(58px, 21vw, 92px); max-width: 340px; }
  .hero-subtitle { font-size: 18px; }
  .hero-deck { font-size: 14px; }
  .generated-stamp { right: 16px; bottom: 16px; }

  .route-strip { padding: 36px 0; }
  .route-line { overflow-x: auto; padding-bottom: 10px; }
  .route-stop.is-next { max-width: 140px; line-height: 1.35; }

  .chapter { padding: 90px 0; }
  .chapter-heading { grid-template-columns: 38px 1fr; gap: 10px; margin-bottom: 54px; }
  .chapter-heading h2 { font-size: 36px; }
  .chapter-heading p:last-child { font-size: 15px; }
  .section-no { margin-top: 7px; }

  .pair-argument { grid-template-columns: 54px 1fr; }
  .pair-word { font-size: 52px; }
  .pull-quote { margin-top: 78px; padding: 24px 0 24px 24px; }
  .pull-quote p { font-size: 26px; }

  .research-note { margin-top: 80px; }
  .research-note > div { padding-left: 4px; }

  .technique-ribbon { justify-content: flex-start; margin: 70px 0; padding: 20px 14px; }
  .technique-ribbon span { padding: 0 9px; font-size: 15px; }

  .metalwork-gallery { grid-template-columns: 1fr; }
  .metalwork-gallery img { aspect-ratio: 4 / 3; }

  .dance-horse { grid-template-columns: 1fr; gap: 8px; margin-top: 90px; }
  .dance-horse-mark { font-size: 90px; }

  .source-row { flex-direction: column; gap: 10px; }

  .truth-row { grid-template-columns: 1fr; gap: 10px; padding: 22px 0; }
  .truth-head { display: none; }
  .truth-row p:first-child { font-family: var(--serif); font-size: 18px; }

  .chai-dossier { padding: 30px 24px; }
  .chai-dossier h3 { font-size: 32px; }

  .directions { min-height: 390px; margin: 90px 0; }
  .direction-center { max-width: 230px; padding: 24px; box-shadow: none; }
  .direction-center b { font-size: 20px; }
  .direction-center p { font-size: 11px; }

  .essay-panel { gap: 28px; margin-bottom: 90px; }
  .essay-panel h3 { font-size: 31px; }

  .watch-note { padding: 26px 22px; }

  .archive-tools { display: grid; align-items: stretch; }
  .search-field { width: 100%; }
  .theme-filter-panel { grid-template-columns: 1fr; gap: 18px; }
  .theme-filter-intro p { max-width: none; }
  .theme-filter-list { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; }
  .theme-button { flex: none; }
  .photo-grid { columns: 2 145px; column-gap: 10px; }
  .photo-card { margin-bottom: 10px; }
  .photo-card-copy { padding: 50px 10px 10px; transform: none; }
  .photo-card-copy b { font-size: 13px; }
  .photo-card-copy span { display: none; }
  .photo-grid.is-loading { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .skeleton { min-height: 210px; }

  .next-field { min-height: 850px; }
  .next-copy { width: calc(100vw - 32px); margin-left: 16px; padding: 95px 0; }
  .next-copy h2 { font-size: 42px; }
  .next-list span { grid-template-columns: 1fr; gap: 4px; }

  .method-legend { grid-template-columns: 1fr; }
  .source-columns { grid-template-columns: 1fr; }

  .site-footer { align-items: flex-start; }

  .lightbox { width: calc(100vw - 20px); height: calc(100vh - 20px); padding: 52px 16px 22px; }
  .lightbox-nav { top: auto; bottom: 14px; width: auto; height: auto; padding: 8px 12px; transform: none; }
  .lightbox-nav.is-prev { left: 16px; }
  .lightbox-nav.is-next { right: 16px; }
  .lightbox figcaption { display: grid; padding-bottom: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}