:root {
  --home-ink: #102d2b;
  --home-ink-deep: #092422;
  --home-jade: #123f3c;
  --home-jade-mid: #1d5a54;
  --home-paper: #e7dcc1;
  --home-paper-light: #f0e7d3;
  --home-ivory: #f1e4c5;
  --home-muted: #8d998a;
  --home-brown: #654c36;
  --home-rust: #a23e32;
  --home-gold: #c4a061;
  --home-line: rgba(196, 160, 97, .38);
  --home-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --home-sans: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { overflow-x: hidden; scroll-behavior: smooth; scroll-snap-type: y proximity; scroll-padding-top: 58px; background: var(--home-ink-deep); }

body.home-exhibition {
  margin: 0 !important;
  padding-top: 0 !important;
  overflow-x: hidden;
  background: var(--home-ink-deep) !important;
  color: var(--home-ivory);
  font-family: var(--home-sans);
  line-height: 1.7;
}

body.home-exhibition::before,
body.home-exhibition::after { display: none !important; }

body.home-exhibition a { color: inherit; }
body.home-exhibition button,
body.home-exhibition input,
body.home-exhibition select,
body.home-exhibition textarea { font: inherit; }

.skip-link {
  position: fixed;
  left: 14px;
  top: -60px;
  z-index: 100000;
  padding: 8px 12px;
  background: var(--home-ivory);
  color: var(--home-ink) !important;
  border-radius: 2px;
  text-decoration: none;
}

.skip-link:focus { top: 14px; }

/* The shared nav remains the source of navigation state. Home only changes its visual shell. */
body.home-exhibition #gelvNav {
  height: 58px !important;
  background: rgba(9, 35, 33, .86) !important;
  border-bottom: 1px solid rgba(240, 228, 197, .18) !important;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .18) !important;
  -webkit-backdrop-filter: blur(18px) saturate(115%) !important;
  backdrop-filter: blur(18px) saturate(115%) !important;
}

body.home-exhibition #gelvNav .in { max-width: 1380px !important; height: 58px !important; }
body.home-exhibition #gelvNav .brand,
body.home-exhibition #gelvNav .lk,
body.home-exhibition #gelvNav .right a,
body.home-exhibition #gelvNav .burger { color: var(--home-ivory) !important; }
body.home-exhibition #gelvNav .brand { letter-spacing: .16em !important; font-family: var(--home-serif) !important; }
body.home-exhibition #gelvNav .lk { border-radius: 0 !important; padding: 8px 13px !important; }
body.home-exhibition #gelvNav .lk:hover,
body.home-exhibition #gelvNav .lk.on { color: #fff4d5 !important; background: transparent !important; box-shadow: inset 0 -2px 0 var(--home-gold) !important; }
body.home-exhibition #gelvNav .dd,
body.home-exhibition #gelvNav .mob { background: rgba(9, 35, 33, .98) !important; border-color: rgba(240, 228, 197, .16) !important; border-radius: 0 !important; }
body.home-exhibition #gelvNav .dd a,
body.home-exhibition #gelvNav .mob a { color: var(--home-ivory) !important; border-radius: 0 !important; }
body.home-exhibition #gelvNav .dd a:hover,
body.home-exhibition #gelvNav .dd a.on { color: #fff4d5 !important; background: rgba(196, 160, 97, .16) !important; }
body.home-exhibition #gelvNav .right .login { color: var(--home-ink) !important; background: var(--home-ivory) !important; border: 1px solid var(--home-ivory) !important; border-radius: 1px !important; }

.home-section {
  position: relative;
  isolation: isolate;
  --wave-fill: var(--home-ink-deep);
  scroll-margin-top: 58px;
  scroll-snap-align: start;
}

.home-section::before,
.home-section::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.home-section::after {
  left: 0;
  bottom: -54px;
  width: 102%;
  height: 108px;
  z-index: 3;
  background: var(--wave-fill);
  border-radius: 0 0 44% 56% / 0 0 86% 100%;
  box-shadow: 0 22px 34px rgba(5, 24, 22, .14);
  transform: translateX(-1%) rotate(-.25deg);
}

.home-section::before {
  left: -1%;
  bottom: -57px;
  width: 102%;
  height: 111px;
  z-index: 4;
  border-bottom: 1px solid color-mix(in srgb, var(--home-gold) 34%, transparent);
  border-radius: 0 0 44% 56% / 0 0 86% 100%;
  transform: rotate(-.25deg);
}

.home-section:nth-of-type(even)::after,
.home-section:nth-of-type(even)::before {
  border-radius: 0 0 58% 42% / 0 0 100% 82%;
  transform: translateX(-1%) rotate(.25deg);
}

.section-shell {
  width: min(1260px, calc(100% - 96px));
  margin: 0 auto;
  position: relative;
  z-index: 4;
}

.home-hero {
  --wave-fill: #123b38;
  min-height: min(890px, 88svh);
  padding: 58px 0 74px;
  display: flex;
  align-items: center;
  background-color: #123b38;
  background-image: linear-gradient(90deg, rgba(7, 27, 26, .54) 0%, rgba(7, 27, 26, .30) 43%, rgba(7, 27, 26, .08) 76%, rgba(7, 27, 26, .14) 100%), url("home/home-hero-brush.png");
  background-position: center calc(34% + var(--hero-parallax, 0px)), 68% center;
  background-size: 100% 100%, 82% 86%;
  background-repeat: no-repeat;
  overflow: visible;
}

.hero-film {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 27, 26, .12), transparent 22%, transparent 74%, rgba(7, 27, 26, .24));
}

.hero-film::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(241, 228, 197, .18);
  margin: 20px;
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 2; width: min(1260px, calc(100% - 96px)); margin: 0 auto; padding-top: 36px; }
.hero-overline { display: flex; justify-content: space-between; gap: 24px; color: rgba(241, 228, 197, .76); font: 11px/1.4 var(--home-sans); letter-spacing: .16em; text-transform: uppercase; }
.hero-brand-lockup { display: flex; align-items: center; gap: 12px; margin-top: 84px; color: var(--home-ivory); font: 600 18px/1 var(--home-serif); letter-spacing: .15em; }
.hero-seal { width: 30px; height: 30px; object-fit: contain; filter: sepia(.28) saturate(.72); }
.hero-edition { position: absolute; top: 23%; right: clamp(32px, 5.5vw, 92px); z-index: 3; display: grid; justify-items: center; gap: 12px; width: 74px; padding: 12px 10px 16px; border: 1px solid rgba(241, 228, 197, .40); background: rgba(9, 35, 33, .16); color: rgba(241, 228, 197, .78); pointer-events: none; }
.hero-edition::before, .hero-edition::after { content: ""; position: absolute; left: 10px; right: 10px; height: 1px; background: rgba(196, 160, 97, .72); }
.hero-edition::before { top: 8px; }
.hero-edition::after { bottom: 9px; }
.hero-edition span { writing-mode: vertical-rl; font: 10px/1 var(--home-sans); letter-spacing: .18em; }
.hero-edition i { width: 1px; height: 62px; background: rgba(241, 228, 197, .50); }
.hero-edition b { writing-mode: vertical-rl; color: var(--home-gold); font: 10px/1.7 var(--home-sans); letter-spacing: .14em; font-weight: 400; }
.hero-kicker { margin: 30px 0 13px; color: var(--home-gold); font-size: 15px; letter-spacing: .16em; }
.home-hero h1 { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; }
.hero-lead { width: min(650px, 100%); margin: 24px 0 30px; color: rgba(241, 228, 197, .82); font: 16px/2 var(--home-serif); letter-spacing: .06em; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.home-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 0 18px; border-radius: 1px !important; text-decoration: none; font-size: 13px; letter-spacing: .08em; transition: transform .24s ease, background .24s ease, color .24s ease, border-color .24s ease; }
.home-button:hover { transform: translateY(-2px); }
.home-button-primary { background: var(--home-rust) !important; color: #fff4d8 !important; border: 1px solid var(--home-rust) !important; box-shadow: 0 10px 24px rgba(63, 17, 12, .28) !important; }
.home-button-primary:hover { background: #b24b3d !important; }
.home-button-light { background: rgba(239, 226, 194, .10) !important; color: var(--home-ivory) !important; border: 1px solid rgba(241, 228, 197, .48) !important; }
.home-button-light:hover { background: rgba(241, 228, 197, .18) !important; }
.hero-stats { width: min(100%, 580px); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 86px; }
.hero-stats div { min-width: 142px; padding: 0 25px; border-left: 1px solid rgba(241, 228, 197, .34); }
.hero-stats div:first-child { padding-left: 0; border-left: 0; }
.hero-stats strong { display: block; color: #f1e4c5; font: 700 24px/1.1 var(--home-serif); }
.hero-stats span { display: block; margin-top: 6px; color: rgba(241, 228, 197, .62); font-size: 11px; letter-spacing: .12em; }
.hero-scroll { position: absolute; right: 7%; bottom: 68px; display: grid; gap: 8px; justify-items: center; width: 42px; padding: 0; border: 0; color: var(--home-ivory); background: transparent; cursor: pointer; }
.hero-scroll span { font-size: 11px; letter-spacing: .16em; }
.hero-scroll i { font-size: 17px; animation: homeFloat 2.2s ease-in-out infinite; }
@keyframes homeFloat { 0%, 100% { transform: translateY(0); opacity: .62; } 50% { transform: translateY(7px); opacity: 1; } }
.home-scroll-meter { position: fixed; top: 58px; left: 0; z-index: 80; width: 100%; height: 2px; background: rgba(241, 228, 197, .16); pointer-events: none; }
.home-scroll-meter i { display: block; width: 100%; height: 100%; transform: scaleX(var(--home-scroll-progress, 0)); transform-origin: left center; background: var(--home-rust); }

.light-section { --wave-fill: var(--home-paper); background: var(--home-paper); color: var(--home-ink); }
.ink-section { --wave-fill: var(--home-jade); background: var(--home-jade); color: var(--home-ivory); }
.section-shell { padding-top: 116px; padding-bottom: 128px; }
.section-heading { margin-bottom: 44px; }
.heading-row { display: flex; align-items: end; justify-content: space-between; gap: 32px; }
.section-index { display: block; margin-bottom: 15px; color: var(--home-rust); font: 11px/1.2 var(--home-sans); letter-spacing: .2em; }
.ink-section .section-index, .timeline-section .section-index, .closing-section .section-index { color: var(--home-gold); }
.section-heading h2, .chapter-copy h2, .closing-inner h2 { margin: 0; font: 700 42px/1.24 var(--home-serif); letter-spacing: .04em; }
.section-heading p { max-width: 360px; margin: 0; color: rgba(16, 45, 43, .66); font-size: 13px; line-height: 1.9; }
.ink-section .section-heading p { color: rgba(241, 228, 197, .68); }
.timeline-section .section-heading p { color: rgba(241, 228, 197, .58); }
.section-heading em, .chapter-copy em, .closing-inner em { color: var(--home-rust); font-style: normal; }
.ink-section .section-heading em, .ink-section .chapter-copy em, .closing-inner em { color: var(--home-gold); }

.task-rail, .chapter-rail, .timeline-track, .exhibit-rail { width: 100%; max-width: 100%; min-width: 0; }
.exhibit-rail { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: rgba(16, 45, 43, .35) transparent; padding: 4px 4px 18px 0; overscroll-behavior-x: contain; overscroll-behavior-y: none; touch-action: pan-x; }
.exhibit-rail::-webkit-scrollbar { height: 5px; }
.exhibit-rail::-webkit-scrollbar-thumb { background: rgba(16, 45, 43, .35); }
.exhibit-rail:focus-visible { outline: 1px solid var(--home-rust); outline-offset: 7px; }
.ink-section .exhibit-rail { scrollbar-color: rgba(241, 228, 197, .42) transparent; }
.ink-section .exhibit-rail::-webkit-scrollbar-thumb { background: rgba(241, 228, 197, .42); }
.home-tasks {
  --wave-fill: #0b2a27;
  background-color: #0b2a27;
  background-image: linear-gradient(135deg, rgba(8, 35, 32, .86), rgba(22, 75, 67, .72) 48%, rgba(6, 28, 27, .88)), url("platform/home-feature-stage-gpt.png");
  background-position: center;
  background-size: cover;
  background-blend-mode: normal, soft-light;
  color: var(--home-ivory);
}
.feature-section .section-index { color: var(--home-gold); }
.feature-section .section-heading p { color: rgba(241, 228, 197, .62); }
.feature-section .section-heading,
.feature-section .feature-showcase { transform: translate3d(var(--feature-linked-shift, 0px), 0, 0); transition: transform .72s cubic-bezier(.18,.82,.18,1); will-change: transform; }
.feature-showcase { position: relative; min-height: 690px; border: 1px solid rgba(241, 228, 197, .26); overflow: hidden; background: linear-gradient(145deg, rgba(22, 78, 70, .30), rgba(5, 27, 26, .38)); box-shadow: inset 0 0 80px rgba(0, 0, 0, .18); }
.feature-showcase::before { content: "GELV / INTERACTIVE INDEX"; position: absolute; left: 24px; top: 20px; color: rgba(241, 228, 197, .46); font-size: 9px; letter-spacing: .2em; }
.feature-showcase::after { content: "08 MODULES"; position: absolute; right: 24px; top: 20px; color: rgba(241, 228, 197, .46); font-size: 9px; letter-spacing: .2em; }
.feature-section { touch-action: pan-y; }
.feature-stage { position: relative; min-width: 0; min-height: 690px; perspective: 1300px; transform-style: preserve-3d; touch-action: pan-y; cursor: grab; }
.feature-showcase.is-dragging .feature-stage { cursor: grabbing; }
.feature-stage { transform: none; }
.feature-detail { transform: none; }
.feature-controls { transform: translate3d(-50%, 0, 0); }
.feature-showcase.is-dragging .feature-stage,
.feature-showcase.is-dragging .feature-detail,
.feature-showcase.is-dragging .feature-controls,
.feature-section.is-feature-dragging .section-heading,
.feature-section.is-feature-dragging .feature-showcase { transition: none; }
.feature-showcase.is-dragging .feature-strip { transition: none; }
.feature-strips {
  position: absolute;
  left: 50%;
  top: 45%;
  width: min(980px, 90%);
  height: 410px;
  overflow: visible;
  transform: translate(-50%, -50%);
  transform-style: preserve-3d;
}
.feature-strip {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 184px;
  height: 294px;
  margin: -147px 0 0 -92px;
  padding: 18px 14px;
  border: 0 !important;
  border-radius: 8px !important;
  outline-offset: 6px;
  overflow: hidden;
  color: var(--home-ivory);
  background-color: var(--home-jade);
  background-position: center;
  background-size: cover;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .44);
  cursor: pointer;
  opacity: var(--feature-opacity, .5);
  filter: saturate(var(--feature-saturation, .65)) brightness(var(--feature-brightness, .62));
  transform: translate3d(var(--feature-x, 0), var(--feature-y, 0), var(--feature-z, 0)) rotateY(var(--feature-angle, 0deg)) scale(var(--feature-scale, 1));
  transform-style: preserve-3d;
  transition: opacity .65s ease, filter .65s ease, transform .72s cubic-bezier(.18,.82,.18,1), box-shadow .65s ease;
  will-change: transform, opacity, filter;
}
.feature-strip::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 25, 24, .06), rgba(6, 25, 24, .12) 45%, rgba(6, 25, 24, .88)); transition: background .4s ease; }
.feature-strip::after { content: ""; position: absolute; inset: 8px; border: 1px solid rgba(241, 228, 197, .25); border-radius: 5px; pointer-events: none; }
.feature-strip:hover { --feature-brightness: .88; }
.feature-strip.is-active { opacity: 1; filter: saturate(1) brightness(1); box-shadow: 0 34px 78px rgba(0, 0, 0, .58); }
.feature-strip.is-active::before { background: linear-gradient(180deg, rgba(6, 25, 24, .02), rgba(6, 25, 24, .08) 43%, rgba(6, 25, 24, .88)); }
.feature-number, .feature-strip > i, .feature-name { position: absolute; z-index: 1; }
.feature-number { left: 14px; top: 14px; font: 700 18px/1 var(--home-serif); }
.feature-strip > i { left: 16px; bottom: 47px; font-size: 13px; }
.feature-name { left: 16px; right: 12px; bottom: 16px; color: rgba(241, 228, 197, .9); font: 600 16px/1.2 var(--home-serif); letter-spacing: .08em; text-align: left; }
.feature-controls { position: absolute; left: 50%; bottom: 18px; z-index: 8; display: flex; align-items: center; justify-content: center; gap: 18px; color: rgba(241, 228, 197, .66); transform: translate3d(-50%, 0, 0); }
.feature-controls::before { content: "拖动浏览"; color: rgba(241, 228, 197, .48); font-size: 9px; letter-spacing: .14em; }
.feature-controls button, .feature-detail-close { display: grid; place-items: center; width: 36px; height: 36px; padding: 0; border: 1px solid rgba(241, 228, 197, .28) !important; border-radius: 50% !important; color: var(--home-ivory); background: rgba(4, 17, 16, .62) !important; cursor: pointer; }
.feature-controls button:hover, .feature-detail-close:hover { color: var(--home-ink); background: var(--home-ivory) !important; }
.feature-controls span { min-width: 70px; text-align: center; font-size: 10px; letter-spacing: .16em; }
.feature-controls b { color: var(--home-gold); font: 700 19px/1 var(--home-serif); }
.feature-detail { position: absolute; left: 36px; right: 36px; bottom: 72px; z-index: 7; display: grid; grid-template-columns: 88px 180px minmax(240px, 1fr) auto; align-items: center; gap: 22px; min-height: 108px; padding: 20px 48px 20px 0; border-top: 1px solid rgba(241, 228, 197, .22); transform: none; animation: featureDetailIn .55s cubic-bezier(.2,.82,.2,1); }
.feature-detail-close { position: absolute; right: 0; top: 20px; }
.feature-detail-code { color: var(--home-gold); font-size: 10px; letter-spacing: .18em; }
.feature-detail h3 { margin: 0; color: var(--home-ivory); font: 700 27px/1.2 var(--home-serif); }
.feature-detail p { margin: 0; color: rgba(241, 228, 197, .62); font: 12px/1.8 var(--home-serif); }
.feature-detail a, .tile-copy b, .under-links a { display: inline-flex; align-items: center; gap: 9px; color: var(--home-gold); font-size: 11px; font-weight: 600; letter-spacing: .06em; text-decoration: none; white-space: nowrap; }
.feature-detail a i, .tile-copy b i, .under-links i { transition: transform .2s ease; }
.feature-detail a:hover i, .exhibit-tile:hover b i, .under-links a:hover i { transform: translateX(4px); }
@keyframes featureDetailIn { from { opacity: 0; transform: translateX(28px); } to { opacity: 1; transform: none; } }

/* The existing pointer/wheel carousel is the primary control. Keep the count, de-emphasize arrow affordances. */
.feature-showcase { touch-action: pan-y; overscroll-behavior-inline: contain; }
.feature-stage { touch-action: pan-y; }
.feature-strip { user-select: none; -webkit-user-select: none; }
.feature-controls button[data-feature-direction] { display: none; }
.feature-controls { gap: 10px; }
.feature-controls::before { content: "DRAG TO EXPLORE"; }
.feature-controls span { min-width: 76px; }

.feature-strip.image-check { background-image: url("home/home-check.png"); background-position: 54% center; }
.feature-strip.image-engine { background-image: url("home/home-engine.png"); background-position: 52% center; }
.feature-strip.image-create { background-image: url("home/home-create.png"); background-position: 50% center; }
.feature-strip.image-rhyme { background-image: url("home/home-rhyme.png"); background-position: 54% center; }
.feature-strip.image-corpus { background-image: url("home/home-corpus.png"); background-position: 50% center; }
.feature-strip.image-immersive { background-image: url("home/home-immersive.png"); background-position: 48% center; }
.feature-strip.image-ancient { background-image: url("home/home-ancient.png"); background-position: 50% center; }
.feature-strip.image-learning { background-image: url("home/home-learning.png"); background-position: 50% center; }

.chapter-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(380px, 1.18fr); align-items: center; gap: 92px; }
.chapter-copy { max-width: 500px; }
.chapter-copy h2 { font-size: 56px; }
.chapter-copy p { max-width: 460px; margin: 24px 0 28px; color: rgba(241, 228, 197, .72); font: 15px/2 var(--home-serif); }
.chapter-links { display: grid; gap: 0; width: min(100%, 400px); border-top: 1px solid rgba(241, 228, 197, .28); }
.chapter-links a { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid rgba(241, 228, 197, .20); text-decoration: none; color: var(--home-ivory); font-size: 13px; }
.chapter-links a:hover { color: var(--home-gold); }
.chapter-visual { position: relative; min-height: 520px; background-color: #1c5550; background-position: center; background-size: cover; border: 1px solid rgba(241, 228, 197, .34); box-shadow: 20px 24px 0 rgba(196, 160, 97, .13); overflow: hidden; }
.chapter-visual::after, .tile-image::after { content: ""; position: absolute; inset: 12px; border: 1px solid rgba(241, 228, 197, .30); pointer-events: none; }
.image-engine { background-image: url("platform/home-feature-stage-gpt.png"); background-position: 70% center; }
.visual-stamp { position: absolute; right: 24px; bottom: 26px; color: rgba(241, 228, 197, .86); font: 700 108px/1 var(--home-serif); }
.visual-caption { position: absolute; left: 25px; bottom: 24px; color: rgba(241, 228, 197, .78); font-size: 11px; letter-spacing: .18em; }

.chapter-rail { display: flex; align-items: stretch; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 18px; }
.exhibit-tile { position: relative; display: grid; grid-template-columns: minmax(220px, .76fr) minmax(260px, 1fr); min-width: min(720px, 88vw); min-height: 390px; flex: 0 0 min(720px, 88vw); color: inherit; border: 1px solid currentColor; text-decoration: none; scroll-snap-align: start; overflow: hidden; transition: transform .28s ease, background .28s ease, box-shadow .28s ease; }
.exhibit-tile:hover { transform: translateY(-5px); background: rgba(255, 250, 236, .10); }
.exhibit-tile:hover { box-shadow: 12px 14px 0 rgba(196, 160, 97, .18); }
.light-section .exhibit-tile:hover { background: rgba(255, 250, 236, .46); }
.tile-image { position: relative; min-height: 390px; background-color: var(--home-jade-mid); background-position: center; background-size: cover; overflow: hidden; transition: transform .45s cubic-bezier(.2,.8,.2,1); }
.exhibit-tile:hover .tile-image { transform: scale(1.025); }
.tile-image span { position: absolute; left: 20px; top: 17px; z-index: 1; color: rgba(241, 228, 197, .86); font: 700 27px/1 var(--home-serif); }
.tile-copy { display: flex; flex-direction: column; align-items: flex-start; padding: 30px 27px 24px; }
.tile-copy h3 { margin: 20px 0 11px; font: 700 30px/1.2 var(--home-serif); }
.tile-copy p { margin: 0; color: rgba(241, 228, 197, .70); font: 14px/1.9 var(--home-serif); }
.light-section .tile-copy p { color: rgba(16, 45, 43, .66); }
.light-section .tile-code { color: var(--home-brown); }
.light-section .tile-copy b { color: var(--home-rust); }
.light-section .tile-image { background-color: var(--home-jade-mid); }
.image-create { --tile-fallback: #52746c; }
.image-check { --tile-fallback: #69796a; }
.image-rhyme { --tile-fallback: #4d716c; }
.image-corpus { --tile-fallback: #65756a; }
.image-immersive { --tile-fallback: #5d7469; }
.image-ancient { --tile-fallback: #4c6b67; }
.image-challenge { --tile-fallback: #5c7063; }
.image-learning { --tile-fallback: #6b7966; }
.image-create .tile-image,
.image-check .tile-image,
.image-rhyme .tile-image,
.image-corpus .tile-image,
.image-immersive .tile-image,
.image-ancient .tile-image,
.image-challenge .tile-image,
.image-learning .tile-image {
  background-color: var(--tile-fallback);
  background-image: url("platform/home-feature-stage-gpt.png");
}
.image-create .tile-image { background-position: 26% center; }
.image-check .tile-image { background-position: 38% center; }
.image-rhyme .tile-image { background-position: 50% center; }
.image-corpus .tile-image { background-position: 62% center; }
.image-immersive .tile-image { background-position: 74% center; }
.image-ancient .tile-image { background-position: 86% center; }
.image-challenge .tile-image { background-position: 34% center; }
.image-learning .tile-image { background-position: 66% center; }
.under-links { display: flex; flex-wrap: wrap; gap: 23px; margin-top: 30px; }
.under-links a { margin: 0; padding: 0; color: var(--home-gold); text-decoration: none; }
.light-section .under-links a { color: var(--home-rust); }

.poet-guide-section { --wave-fill: #0c302d; min-height: 820px; background: linear-gradient(135deg, #123e3a 0%, #174f48 48%, #0a2927 100%); color: var(--home-ivory); }
.poet-guide-section .section-index { color: var(--home-gold); }
.poet-guide-section .section-heading p { color: rgba(241, 228, 197, .70); }
.poet-stage { position: relative; min-height: 590px; overflow: hidden; border: 1px solid rgba(241, 228, 197, .30); background-color: #0d3531; background-image: linear-gradient(180deg, rgba(12, 54, 49, .62), rgba(5, 29, 28, .78)), url("platform/home-feature-stage-gpt.png"); background-position: center; background-size: cover; box-shadow: inset 0 0 110px rgba(0, 0, 0, .30); }
.poet-stage-head, .poet-stage-foot { position: absolute; left: 24px; right: 24px; z-index: 4; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: rgba(241, 228, 197, .46); font-size: 9px; letter-spacing: .17em; }
.poet-stage-head { top: 20px; }
.poet-stage-foot { bottom: 18px; }
.poet-strips { position: absolute; left: 50%; top: 47%; z-index: 2; display: flex; align-items: center; justify-content: center; gap: clamp(5px, .55vw, 9px); width: min(880px, calc(100% - 90px)); height: 330px; transform: translate(-50%, -50%); }
.poet-strip { position: relative; flex: 0 0 clamp(54px, 5.2vw, 70px); width: clamp(54px, 5.2vw, 70px); height: var(--poet-height, 230px); padding: 12px 8px; overflow: hidden; border: 0 !important; border-radius: 0 !important; color: var(--home-ivory); background-color: var(--home-jade); background-position: center; background-size: cover; box-shadow: 0 18px 42px rgba(0, 0, 0, .30); cursor: pointer; opacity: .72; filter: saturate(.62) brightness(.72); transform: scaleY(.08); transform-origin: center center; transition: flex-basis .72s cubic-bezier(.18,.82,.18,1), width .72s cubic-bezier(.18,.82,.18,1), height .72s cubic-bezier(.18,.82,.18,1), opacity .5s ease, filter .5s ease, transform .82s cubic-bezier(.18,.82,.18,1); transition-delay: var(--poet-delay, 0ms); }
.poet-guide-section.is-visible .poet-strip { transform: scaleY(1); }
.poet-strip::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9, 42, 39, .05), rgba(7, 34, 32, .18) 45%, rgba(4, 25, 24, .74)); }
.poet-strip::after { content: ""; position: absolute; inset: 7px; border: 1px solid rgba(241, 228, 197, .24); }
.poet-strip { background-image: var(--poet-image, url("platform/home-feature-stage-gpt.png")); background-size: cover; background-position: center; }
.poet-strip > span, .poet-strip > b { position: absolute; z-index: 1; left: 50%; transform: translateX(-50%); }
.poet-strip > span { top: 13px; color: var(--home-gold); font: 700 14px/1 var(--home-serif); }
.poet-strip > b { bottom: 14px; writing-mode: vertical-rl; font: 600 13px/1.3 var(--home-serif); letter-spacing: .12em; }
.poet-strip:hover { opacity: .96; filter: saturate(.88) brightness(.88); transform: scaleY(1) translateY(-7px); }
.poet-strip.is-active { flex-basis: clamp(174px, 15vw, 214px); width: clamp(174px, 15vw, 214px); height: 330px; opacity: 1; filter: saturate(1) brightness(1); transform: scaleY(1) translateY(-8px); box-shadow: 0 30px 72px rgba(0, 0, 0, .42); transition-delay: 0ms; }
.poet-strip.is-active > b { left: 18px; bottom: 17px; writing-mode: horizontal-tb; font-size: 20px; transform: none; }
.poet-detail { position: absolute; left: 24px; right: 24px; bottom: 48px; z-index: 5; display: grid; grid-template-columns: 58px minmax(240px, 1fr) auto; align-items: center; gap: 20px; min-height: 88px; padding-top: 16px; border-top: 1px solid rgba(241, 228, 197, .28); background: linear-gradient(180deg, transparent, rgba(7, 34, 32, .78) 28%); animation: poetDetailIn .5s cubic-bezier(.2,.82,.18,1) both; }
.poet-detail-rank { color: var(--home-gold); font: 700 30px/1 var(--home-serif); }
.poet-detail-period { color: var(--home-gold); font-size: 9px; letter-spacing: .16em; }
.poet-detail h3 { display: inline; margin: 0 14px 0 0; font: 700 24px/1.2 var(--home-serif); }
.poet-detail p { display: inline; margin: 0; color: rgba(241, 228, 197, .58); font-size: 11px; }
.poet-detail p strong { color: var(--home-ivory); font: 700 17px/1 var(--home-serif); }
.poet-detail a { display: inline-flex; align-items: center; gap: 9px; color: var(--home-gold); font-size: 11px; text-decoration: none; white-space: nowrap; }
@keyframes poetDetailIn { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

.timeline-section { --wave-fill: #0b2e2b; min-height: 960px; background: linear-gradient(150deg, #0c312e 0%, #174e47 46%, #082624 100%); color: var(--home-ivory); overflow: hidden; }
.timeline-stage { --timeline-progress: .46; position: relative; width: 100%; min-height: 650px; aspect-ratio: 16 / 8.6; overflow: hidden; border: 1px solid rgba(200, 165, 99, .38); background: #0d3430; box-shadow: 0 42px 90px rgba(0, 0, 0, .26); isolation: isolate; }
.timeline-stage::before { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg, rgba(8, 39, 36, .90) 0%, rgba(13, 58, 53, .78) 34%, rgba(13, 62, 56, .30) 67%, rgba(6, 31, 30, .68) 100%), linear-gradient(180deg, rgba(5, 27, 26, .18), transparent 25%, transparent 72%, rgba(3, 19, 19, .72)); }
.timeline-stage::after { content: ""; position: absolute; inset: 18px; z-index: 6; border: 1px solid rgba(241, 228, 197, .18); pointer-events: none; }
.timeline-backdrop, .timeline-backdrop-layer { position: absolute; inset: 0; }
.timeline-backdrop { z-index: 0; overflow: hidden; background: #0b302d; }
.timeline-backdrop-layer { opacity: 0; background-image: url("platform/home-timeline-gpt.png"); background-position: var(--timeline-bg-x, 54%) center; background-size: 116% auto; background-repeat: no-repeat; filter: saturate(.78) contrast(1.02) brightness(.88); transform: scale(1.035); transition: opacity .8s ease, transform 1.25s cubic-bezier(.2,.78,.2,1); }
.timeline-backdrop-layer.is-visible { opacity: 1; transform: scale(1); }
.timeline-stage-top { position: absolute; left: 32px; right: 32px; top: 30px; z-index: 7; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.timeline-status { color: rgba(241, 228, 197, .52); font-size: 10px; letter-spacing: .12em; }
.timeline-controls { display: flex; gap: 10px; }
.timeline-controls button { display: grid; place-items: center; width: 42px; height: 42px; padding: 0; border: 1px solid rgba(200, 165, 99, .72) !important; border-radius: 50% !important; color: var(--home-gold); background: rgba(5, 18, 17, .48) !important; cursor: pointer; transition: color .25s ease, background .25s ease, opacity .25s ease, transform .25s ease; }
.timeline-controls button:hover:not(:disabled) { color: #fff7df; background: rgba(162, 62, 50, .42) !important; transform: translateY(-2px); }
.timeline-controls button:disabled { opacity: .28; cursor: default; }
.timeline-detail { position: absolute; left: 8%; top: 50%; z-index: 5; display: block; width: 37%; max-width: 450px; transform: translateY(-48%); }
.timeline-detail-index { display: block; margin-bottom: 22px; color: rgba(241, 228, 197, .38); font: 600 11px/1 var(--home-sans); letter-spacing: .16em; }
.timeline-detail-years { display: block; color: var(--home-gold); font-size: 10px; letter-spacing: .18em; }
.timeline-detail h3 { margin: 10px 0 15px; color: #f2dfb2; font: 700 50px/1.08 var(--home-serif); letter-spacing: 0; }
.timeline-detail-rule { position: relative; display: block; width: min(100%, 330px); height: 1px; margin-bottom: 23px; background: rgba(200, 165, 99, .55); }
.timeline-detail-rule::after { content: ""; position: absolute; right: -3px; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: #e0ad3c; box-shadow: 0 0 18px rgba(224, 173, 60, .62); }
.timeline-detail p { max-width: 390px; min-height: 44px; margin: 0 0 24px; color: rgba(241, 228, 197, .68); font: 13px/1.75 var(--home-serif); }
.timeline-detail dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; margin: 0 0 26px; }
.timeline-detail dl div { min-width: 0; padding-left: 11px; border-left: 1px solid rgba(200, 165, 99, .34); }
.timeline-detail dt { color: rgba(241, 228, 197, .46); font-size: 9px; white-space: nowrap; }
.timeline-detail dd { margin: 7px 0 0; color: var(--home-ivory); font: 700 19px/1 var(--home-serif); }
.timeline-detail > a { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-width: 158px; min-height: 42px; padding: 0 18px; border: 1px solid rgba(200, 165, 99, .78); border-radius: 24px; color: #efd89f; font-size: 11px; text-decoration: none; transition: background .25s ease, color .25s ease, transform .25s ease; }
.timeline-detail > a:hover { color: #fff7df; background: rgba(162, 62, 50, .4); transform: translateY(-2px); }
.timeline-route { position: absolute; right: 1%; top: 0; z-index: 4; width: 54%; height: 100%; outline: 0; }
.timeline-route:focus-visible { outline: 1px solid rgba(224, 173, 60, .65); outline-offset: -9px; }
.timeline-route-lines, .timeline-track { position: absolute; inset: 0; width: 100%; height: 100%; }
.timeline-route-lines { overflow: visible; }
.timeline-route-base, .timeline-route-progress { fill: none; vector-effect: non-scaling-stroke; }
.timeline-route-base { stroke: rgba(241, 228, 197, .22); stroke-width: 1.3; }
.timeline-route-progress { stroke: #d5aa58; stroke-width: 2; stroke-dasharray: var(--timeline-progress) 1; filter: drop-shadow(0 0 8px rgba(213, 170, 88, .34)); transition: stroke-dasharray .75s cubic-bezier(.2,.78,.2,1); }
.timeline-track { overflow: visible; }
.timeline-node { --node-x: 21%; --node-y: 11%; position: absolute; left: var(--node-x); top: var(--node-y); z-index: 2; display: grid; grid-template-columns: 22px minmax(0, 1fr); align-items: center; gap: 11px; width: 230px; min-height: 52px; padding: 0; border: 0 !important; border-radius: 0 !important; color: rgba(241, 228, 197, .46); background: transparent !important; cursor: pointer; text-align: left; transform: translate(-11px, -50%); transition: color .45s ease, opacity .45s ease, transform .55s cubic-bezier(.2,.82,.2,1); }
.timeline-node:nth-child(1) { --node-x: 21%; --node-y: 11%; }
.timeline-node:nth-child(2) { --node-x: 36%; --node-y: 23%; }
.timeline-node:nth-child(3) { --node-x: 43%; --node-y: 37%; }
.timeline-node:nth-child(4) { --node-x: 46%; --node-y: 53%; }
.timeline-node:nth-child(5) { --node-x: 43%; --node-y: 69%; }
.timeline-node:nth-child(6) { --node-x: 34%; --node-y: 84%; }
.timeline-dot { position: relative; display: block; width: 12px; height: 12px; border: 1px solid rgba(213, 170, 88, .74); border-radius: 50%; background: rgba(8, 24, 23, .92); box-shadow: 0 0 0 0 rgba(213, 170, 88, 0); transition: width .45s ease, height .45s ease, background .45s ease, border-color .45s ease, box-shadow .45s ease, transform .45s ease; }
.timeline-node.is-past .timeline-dot { background: #bb8d40; border-color: #d9b46b; }
.timeline-node.is-active { z-index: 3; color: #f2dfb2; transform: translate(-15px, -50%); }
.timeline-node.is-active .timeline-dot { width: 28px; height: 28px; border: 2px solid #e0b562; background: rgba(8, 24, 23, .86); box-shadow: 0 0 0 7px rgba(224, 181, 98, .15), 0 0 24px rgba(224, 181, 98, .24); transform: translateX(-3px); }
.timeline-node.is-active .timeline-dot::after { content: ""; position: absolute; inset: 6px; border: 1px solid #efd89f; border-radius: 50%; background: #a23e32; }
.timeline-node-copy { display: grid; gap: 5px; min-width: 0; }
.timeline-node-copy b { font: 500 13px/1.2 var(--home-serif); letter-spacing: 0; white-space: nowrap; transition: font-size .45s ease, color .45s ease; }
.timeline-node-copy small { color: rgba(241, 228, 197, .32); font-size: 8px; letter-spacing: .12em; white-space: nowrap; transition: color .45s ease; }
.timeline-node.is-active .timeline-node-copy { transform: translateX(5px); }
.timeline-node.is-active .timeline-node-copy b { color: #f4dfab; font-size: 29px; }
.timeline-node.is-active .timeline-node-copy small { color: rgba(241, 228, 197, .65); }
.timeline-node:hover:not(.is-active) { color: #e8cd91; transform: translate(-7px, -50%); }
.timeline-loading { opacity: .48; }
.timeline-note { position: absolute; left: 32px; right: 32px; bottom: 24px; z-index: 7; display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 10px; color: rgba(241, 228, 197, .36); font-size: 9px; }
.timeline-note i { height: 1px; background: linear-gradient(90deg, rgba(200, 165, 99, .5), rgba(200, 165, 99, .08)); }
.timeline-note b { margin-left: 10px; font-weight: 400; white-space: nowrap; }

.closing-section { --wave-fill: #0d342f; min-height: 620px; display: grid; place-items: center; background-color: #0d342f; background-image: linear-gradient(135deg, rgba(8, 33, 31, .84), rgba(25, 86, 76, .70) 52%, rgba(7, 29, 28, .88)), url("platform/home-closing-gpt.png"); background-position: center; background-size: cover; background-blend-mode: normal, soft-light; color: var(--home-ivory); text-align: center; }
.closing-section::before { content: ""; position: absolute; inset: 26px; border: 1px solid rgba(241, 228, 197, .18); pointer-events: none; }
.closing-inner { position: relative; z-index: 2; width: min(700px, calc(100% - 48px)); }
.closing-inner h2 { font-size: 58px; }
.closing-inner p { margin: 22px auto 30px; color: rgba(241, 228, 197, .78); font: 15px/1.9 var(--home-serif); }
.closing-inner .hero-actions { justify-content: center; }
.closing-footer { position: absolute; left: 6.7%; right: 6.7%; bottom: 25px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 13px; border-top: 1px solid rgba(241, 228, 197, .22); color: rgba(241, 228, 197, .56); font-size: 10px; letter-spacing: .12em; }
.closing-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.closing-footer a { color: rgba(241, 228, 197, .72); text-decoration: none; }
.closing-footer a:hover { color: var(--home-gold); }

.section-index-rail { position: fixed; top: 50%; right: 24px; z-index: 20; display: grid; gap: 10px; transform: translateY(-50%); }
.section-index-rail a { display: flex; align-items: center; justify-content: flex-end; gap: 8px; color: rgba(241, 228, 197, .46); font-size: 10px; text-decoration: none; letter-spacing: .1em; }
.section-index-rail a::after { content: ""; width: 7px; height: 7px; border: 1px solid currentColor; background: transparent; }
.section-index-rail a span { opacity: 0; transform: translateX(5px); transition: opacity .2s ease, transform .2s ease; }
.section-index-rail a:hover span, .section-index-rail a.is-active span { opacity: 1; transform: none; }
.section-index-rail a.is-active { color: var(--home-gold); }
.section-index-rail a.is-active::after { background: var(--home-gold); }

.feedback-dock { position: fixed; right: 18px; bottom: 19px; z-index: 40; }
.feedback-dock button { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 12px; border: 1px solid rgba(241, 228, 197, .38) !important; border-radius: 1px !important; color: var(--home-ivory); background: rgba(9, 35, 33, .84) !important; cursor: pointer; font-size: 12px; }
.feedback-dock button:hover { color: var(--home-gold); }
.feedback-panel { position: fixed; right: 18px; bottom: 18px; z-index: 45; display: none; width: min(330px, calc(100vw - 28px)); padding: 18px; border: 1px solid rgba(196, 160, 97, .54); border-radius: 1px; background: var(--home-ivory); color: var(--home-ink); box-shadow: 0 24px 60px rgba(0, 0, 0, .28); }
.feedback-panel.is-open { display: block; }
.feedback-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; border-bottom: 1px solid rgba(16, 45, 43, .22); }
.feedback-header h2 { margin: 0 0 9px; font: 700 20px/1.2 var(--home-serif); }
.feedback-header button { padding: 0 0 9px; border: 0; background: transparent; color: var(--home-ink); cursor: pointer; }
.feedback-panel label { display: block; margin: 9px 0 4px; color: var(--home-brown); font-size: 11px; }
.feedback-panel input, .feedback-panel select, .feedback-panel textarea { width: 100%; padding: 8px 9px; border: 1px solid rgba(16, 45, 43, .28) !important; border-radius: 0 !important; background: rgba(255, 252, 241, .62) !important; color: var(--home-ink); font-size: 12px; }
.feedback-panel textarea { resize: vertical; }
.feedback-submit { width: 100%; margin-top: 12px; padding: 10px; border: 0 !important; border-radius: 0 !important; color: var(--home-ivory); background: var(--home-rust) !important; cursor: pointer; font-size: 12px; }
.feedback-message { min-height: 18px; margin: 7px 0 0; color: var(--home-brown); font-size: 11px; }
.home-toast { position: fixed; left: 50%; bottom: 24px; z-index: 50; padding: 8px 13px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; background: var(--home-ivory); color: var(--home-ink); font-size: 12px; transition: opacity .2s ease, transform .2s ease; }
.home-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 980px) {
  .section-shell, .hero-inner { width: min(100% - 56px, 820px); }
  .home-hero { background-image: linear-gradient(90deg, rgba(7, 27, 26, .62) 0%, rgba(7, 27, 26, .36) 55%, rgba(7, 27, 26, .08) 100%), url("home/home-hero-brush.png"); background-position: center, 68% center; background-size: 100% 100%, 82% 86%; background-repeat: no-repeat; }
  .hero-inner { padding-right: clamp(210px, 31vw, 300px); }
  .hero-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .hero-edition { right: 34px; }
  .heading-row { align-items: start; flex-direction: column; }
  .section-heading p { max-width: 520px; }
  .chapter-layout { grid-template-columns: 1fr; gap: 38px; }
  .chapter-copy { max-width: 680px; }
  .chapter-visual { min-height: 430px; }
  .feature-detail { grid-template-columns: 70px 150px minmax(220px, 1fr); }
  .feature-detail > a { grid-column: 2 / -1; justify-self: end; }
  .feature-detail-close { top: 18px; }
  .poet-strips { width: calc(100% - 48px); }
  .timeline-detail { left: 6%; width: 40%; }
  .timeline-route { right: -4%; width: 60%; }
  .section-index-rail { display: none; }
}

@media (max-width: 640px) {
  body.home-exhibition #gelvNav { height: 52px !important; }
  body.home-exhibition #gelvNav .in { height: 52px !important; }
  .home-section { scroll-margin-top: 52px; }
  html { scroll-padding-top: 52px; }
  .home-scroll-meter { top: 52px; }
  .section-shell, .hero-inner { width: calc(100% - 32px); }
  .home-hero { min-height: 760px; padding-top: 52px; padding-bottom: 54px; align-items: flex-start; background-image: linear-gradient(90deg, rgba(7, 27, 26, .84) 0%, rgba(7, 27, 26, .62) 54%, rgba(7, 27, 26, .12) 100%), url("platform/home-hero-mobile-gpt.png"); background-position: center, 54% center; background-size: 100% 100%, 66% 74%; background-repeat: no-repeat; }
  .hero-inner { padding-top: 24px; padding-right: 92px; }
  .hero-edition { top: 78px; right: 16px; width: 42px; gap: 7px; padding: 12px 5px 13px; }
  .hero-edition span { font-size: 8px; }
  .hero-edition i { height: 36px; }
  .hero-edition b { display: none; }
  .hero-overline { display: block; font-size: 9px; line-height: 2; }
  .hero-overline span { display: block; }
  .hero-brand-lockup { margin-top: 64px; font-size: 16px; }
  .hero-kicker { font-size: 13px; line-height: 1.6; }
  .hero-lead { font-size: 14px; line-height: 1.9; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .home-button { width: 100%; }
  .hero-stats { width: 100%; margin-top: 52px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 0; }
  .hero-stats div, .hero-stats div:first-child { min-width: 0; padding: 0 0 0 14px; border-left: 1px solid rgba(241, 228, 197, .34); }
  .hero-stats div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .hero-scroll { right: 16px; bottom: 28px; }
  .section-shell { padding-top: 78px; padding-bottom: 90px; }
  .section-heading { margin-bottom: 30px; }
  .section-heading h2, .chapter-copy h2 { font-size: 34px; }
  .feature-showcase, .feature-stage { min-height: 660px; }
  .feature-showcase::before, .feature-showcase::after { top: 14px; font-size: 7px; }
  .feature-showcase::before { left: 14px; }
  .feature-showcase::after { right: 14px; }
  .feature-strips { top: 39%; width: 100%; height: 320px; }
  .feature-strip { width: 156px; height: 250px; margin: -125px 0 0 -78px; }
  .feature-name { font-size: 14px; }
  .feature-detail { left: 15px; right: 15px; bottom: 62px; grid-template-columns: 52px minmax(0, 1fr); gap: 11px 14px; min-height: 178px; padding: 16px 40px 14px 0; }
  .feature-detail h3 { font-size: 22px; }
  .feature-detail p { grid-column: 1 / -1; }
  .feature-detail > a { grid-column: 1 / -1; justify-self: start; }
  .feature-detail-close { top: 14px; }
  .feature-controls { bottom: 13px; }
  .chapter-visual { min-height: 340px; }
  .visual-stamp { font-size: 76px; }
  .exhibit-tile { grid-template-columns: 1fr; min-width: 86vw; flex-basis: 86vw; min-height: auto; }
  .tile-image { min-height: 260px; }
  .tile-copy { min-height: 240px; padding: 23px 21px 20px; }
  .tile-copy h3 { font-size: 26px; }
  .poet-guide-section { min-height: 880px; }
  .poet-stage { min-height: 650px; }
  .poet-stage-head, .poet-stage-foot { left: 14px; right: 14px; }
  .poet-stage-head span:first-child, .poet-stage-foot span:first-child { display: none; }
  .poet-strips { left: 0; top: 42%; justify-content: flex-start; width: 100%; height: 360px; padding: 0 18vw; overflow-x: auto; transform: translateY(-50%); scrollbar-width: none; }
  .poet-strips::-webkit-scrollbar { display: none; }
  .poet-strip { flex-basis: 54px; width: 54px; }
  .poet-strip.is-active { flex-basis: 58vw; width: 58vw; }
  .poet-detail { left: 14px; right: 14px; bottom: 48px; grid-template-columns: 46px 1fr; gap: 12px; min-height: 150px; }
  .poet-detail > a { grid-column: 1 / -1; justify-self: start; }
  .timeline-section { min-height: 1120px; }
  .timeline-stage { min-height: 960px; aspect-ratio: auto; }
  .timeline-stage::before { background: linear-gradient(180deg, rgba(5, 18, 17, .92) 0%, rgba(5, 18, 17, .79) 37%, rgba(5, 18, 17, .28) 65%, rgba(5, 18, 17, .72) 100%); }
  .timeline-stage::after { inset: 10px; }
  .timeline-backdrop-layer { background-position: 58% center; background-size: auto 100%; filter: saturate(.7) contrast(1.05) brightness(.62); }
  .timeline-stage-top { left: 20px; right: 20px; top: 22px; }
  .timeline-status { max-width: 190px; line-height: 1.6; }
  .timeline-controls button { width: 38px; height: 38px; }
  .timeline-detail { left: 24px; top: 80px; width: calc(100% - 48px); max-width: none; transform: none; }
  .timeline-detail-index { margin-bottom: 10px; }
  .timeline-detail h3 { margin: 6px 0 10px; font-size: 38px; }
  .timeline-detail-rule { margin-bottom: 14px; }
  .timeline-detail p { min-height: 40px; margin-bottom: 14px; font-size: 12px; }
  .timeline-detail dl { gap: 7px; margin-bottom: 16px; }
  .timeline-detail dl div { padding-left: 8px; }
  .timeline-detail dd { font-size: 17px; }
  .timeline-detail > a { min-width: 150px; min-height: 38px; }
  .timeline-route { right: -15%; top: 352px; width: 112%; height: 560px; }
  .timeline-node { width: 168px; grid-template-columns: 19px minmax(0, 1fr); gap: 8px; }
  .timeline-node.is-active .timeline-node-copy b { font-size: 21px; }
  .timeline-node-copy b { font-size: 12px; }
  .timeline-node-copy small { font-size: 7px; }
  .timeline-note { left: 20px; right: 20px; bottom: 18px; grid-template-columns: auto 1fr auto; }
  .timeline-note b { grid-column: 1 / -1; margin: 0; white-space: normal; }
  .closing-section { min-height: 560px; }
  .closing-inner h2 { font-size: 44px; }
  .closing-footer { position: static; width: calc(100% - 32px); margin: 24px auto 0; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
  .closing-footer nav { justify-content: center; gap: 10px 16px; }
  .feedback-dock { right: 12px; bottom: 14px; }
  .feedback-dock span { display: none; }
  .feedback-dock button { width: 38px; height: 38px; justify-content: center; padding: 0; }
  .feedback-panel { right: 12px; bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}