:root { color-scheme: dark; --navy: #112a39; --ink: #2e2820; --gold: #d0ad70; --cream: #efe7d7; --muted: #b4bdc0; }
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; }
body { font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; background: var(--navy); color: #f8f1e4; font-size: 14px; }
button, input { font: inherit; }
button { cursor: pointer; transition: background .2s, color .2s, border-color .2s; }
button:disabled { cursor: wait; }
button:focus-visible, summary:focus-visible, input:focus-visible { outline: 2px solid #d0ad70; outline-offset: 4px; }
button { -webkit-tap-highlight-color: transparent; }
.museum-app { width: 100%; height: 100dvh; min-height: 450px; position: relative; background: #192f3d; isolation: isolate; }
.museum-header { position: absolute; inset: 0 0 auto; height: 88px; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; z-index: 5; background: #102737; border-bottom: 1px solid #a3834933; }
.brand { display: flex; align-items: center; gap: 15px; flex-shrink: 0; }
.brand-seal { width: 44px; height: 48px; display: grid; place-items: center; color: #e3c38e; border: 1px solid #ad8955; outline: 1px solid #ad895540; outline-offset: 3px; border-radius: 11px 3px 11px 3px; font: 27px "STSong", "SimSun", serif; }
h1 { font: 500 25px "STSong", "SimSun", serif; letter-spacing: 4px; margin: 0 0 8px; }
.brand p { font-size: 8px; letter-spacing: 2.5px; margin: 0; color: #b7a282; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.experience-tag { display: flex; align-items: center; gap: 8px; color: #b6c2c6; font-size: 12px; margin-right: 18px; letter-spacing: 1px; }
.experience-tag > span { width: 5px; height: 5px; border-radius: 50%; background: #d5b17b; }
.icon-button { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; padding: 0; border: 1px solid transparent; border-radius: 8px; background: transparent; color: #d8dcd9; }
.icon-button:hover, .icon-button.active { color: #e7c388; background: #ffffff0a; border-color: #d4af6c44; }
.quiet-button { padding: 9px 15px; background: transparent; border: 1px solid #c9a36566; color: #e3c28d; border-radius: 6px; }
.exhibit-nav { position: absolute; top: 88px; left: 0; right: 0; z-index: 4; display: flex; height: 59px; align-items: center; padding: 0 32px; gap: 28px; background: #132d3cec; border-bottom: 1px solid #c0a47a26; }
.nav-caption { font: 15px "STSong", "SimSun", serif; letter-spacing: 4px; color: #b9a689; white-space: nowrap; }
.exhibit-tabs { display: flex; height: 100%; gap: 6px; }
.exhibit-tab { display: flex; align-items: center; justify-content: center; min-width: 90px; gap: 10px; padding: 0 16px; color: #b9c4c7; background: transparent; border: 0; border-bottom: 2px solid transparent; }
.exhibit-tab:hover { background: #ffffff06; color: #f8e4bf; }
.exhibit-tab.selected { color: #efd2a1; border-bottom-color: #d3b077; background: linear-gradient(0deg, #bd9f5716, transparent); }
.tab-number { font: 10px Georgia, serif; color: #b7a07880; }
.mini-wave { height: 12px; display: flex; align-items: center; gap: 2px; }
.mini-wave i { width: 2px; height: 5px; background: #dcb881; }
.mini-wave i:nth-child(2) { height: 11px; }
.mini-wave.animating i { animation: wave 1s ease-in-out infinite alternate; }
.mini-wave.animating i:nth-child(2) { animation-delay: -.6s; }
.mini-wave.animating i:nth-child(3) { animation-delay: -.2s; }
.nav-tip { display: flex; align-items: center; gap: 7px; margin-left: auto; color: #a1b0b6; font-size: 11px; white-space: nowrap; }
.scene-area { position: absolute; inset: 147px 0 123px 0; overflow: hidden; transition: right .25s ease; background: #152d3b; }
.with-info .scene-area { right: 318px; }
.museum-canvas { position: absolute; inset: 0; }
.museum-canvas canvas { width: 100%; height: 100%; display: block; }
.scene-heading { position: absolute; top: 25px; left: 30px; pointer-events: none; text-shadow: 0 2px 8px #102735; }
.scene-heading > span { font-size: 10px; letter-spacing: 3px; color: #dbc8a6; }
.scene-heading p { margin: 7px 0 0; font: 19px "STSong", "SimSun", serif; letter-spacing: 3px; color: #f6ead4; }
.scene-tools { position: absolute; bottom: 19px; left: 22px; right: 22px; display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; pointer-events: none; }
.rotation-hint { display: flex; align-items: center; gap: 12px; padding: 10px 15px; background: #112736d6; backdrop-filter: blur(12px); border: 1px solid #c7a27050; border-radius: 9px; box-shadow: 0 6px 20px #07131b22; }
.rotation-symbol { border: 1px solid #bf9d67; border-radius: 50%; display: grid; place-items: center; width: 36px; height: 36px; color: #e8c38a; font: 12px Georgia, serif; transform: rotate(-12deg); }
.rotation-hint strong { display: block; font-size: 13px; font-weight: 500; letter-spacing: 2px; color: #e2c294; }
.rotation-hint div > span { display: block; font-size: 10px; color: #c6cccc; margin-top: 5px; letter-spacing: .5px; }
.view-controls { display: flex; padding: 6px; gap: 2px; background: #112736e0; backdrop-filter: blur(12px); border: 1px solid #d6b4774d; border-radius: 9px; pointer-events: auto; }
.view-controls button { border: 0; background: none; color: #e7d1ae; min-width: 31px; height: 32px; display: flex; align-items: center; justify-content: center; gap: 6px; border-radius: 4px; }
.view-controls button:hover { background: #cfb08326; color: #fff; }
.view-controls .reset-view { padding: 0 10px; font-size: 11px; }
.control-divider { width: 1px; height: 20px; background: #c3ae8e3b; align-self: center; margin: 0 4px; }
.info-panel { position: absolute; top: 147px; bottom: 123px; right: 0; width: 318px; color-scheme: light; background: var(--cream); color: var(--ink); z-index: 3; border-left: 1px solid #d6b783; box-shadow: -10px 0 30px #08131b24; display: flex; flex-direction: column; }
.panel-top { display: flex; align-items: center; justify-content: space-between; padding: 17px 23px 7px; color: #8b785a; font-size: 10px; letter-spacing: 2px; }
.panel-close { width: 25px; height: 25px; background: transparent; border: 0; color: #8a7658; display: grid; place-items: center; }
.panel-close:hover { color: #332a1e; }
.info-scroll { padding: 18px 27px 22px; overflow: auto; flex: 1; scrollbar-width: thin; scrollbar-color: #b4a382 transparent; animation: reveal .25s ease; }
.instrument-english { font: 9px Georgia, serif; letter-spacing: 3px; margin: 0 0 9px; color: #927551; }
.info-panel h2 { font: 500 49px "STSong", "SimSun", serif; letter-spacing: 8px; margin: 0 0 18px; color: #352417; }
.instrument-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: #827157; font-size: 11px; line-height: 1.8; }
.instrument-meta span:first-child { border: 1px solid #ac906459; border-radius: 3px; color: #765437; padding: 2px 7px; }
.ornament { display: flex; align-items: center; gap: 11px; color: #a27c46; margin: 24px 0; }
.ornament span { flex: 1; height: 1px; background: #b2977147; }
.description { color: #514737; font-size: 14px; line-height: 2.05; text-align: justify; margin: 0; letter-spacing: .3px; }
.look-closer { border-left: 2px solid #a98752; padding: 0 0 0 12px; margin: 24px 0; }
.look-closer > span { color: #8a6336; font-size: 10px; letter-spacing: 3px; }
.look-closer p { font-size: 12px; color: #82735c; line-height: 1.9; margin: 6px 0 0; }
.reference-photo { border-top: 1px solid #b49c7742; padding-top: 13px; }
.reference-photo summary { cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; font-size: 11px; color: #827058; }
.reference-photo summary::-webkit-details-marker { display: none; }
.reference-photo[open] summary svg { transform: rotate(180deg); }
.reference-photo img { width: 100%; max-height: 240px; object-fit: contain; margin-top: 13px; background: #fff8ec; border-radius: 3px; }
.reference-photo > span { color: #897c68; display: block; font-size: 10px; line-height: 1.8; margin-top: 7px; }
.source-note { font-size: 9px; color: #9f8e73; line-height: 1.8; margin: 20px 0 0; }
.panel-footer { display: flex; align-items: center; gap: 10px; padding: 18px 25px; border-top: 1px solid #b2977133; color: #8b7759; font-size: 10px; background: #e6ddca60; }
.audio-dock { position: absolute; inset: auto 0 0; min-height: 123px; padding: 19px 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: #102736; border-top: 1px solid #c4a16c5c; z-index: 6; }
.now-playing { display: flex; gap: 16px; align-items: center; flex: 1; min-width: 195px; }
.sound-emblem { width: 53px; height: 57px; display: flex; align-items: center; justify-content: center; gap: 3px; border: 1px solid #bf9a5c5c; border-radius: 8px; background: #ffffff03; }
.sound-emblem i { width: 2px; height: 13px; background: #c5a36b; }
.sound-emblem i:nth-child(2), .sound-emblem i:nth-child(4) { height: 25px; }
.sound-emblem i:nth-child(3) { height: 34px; }
.sound-emblem.is-playing i { animation: wave .9s ease-in-out infinite alternate; }
.sound-emblem.is-playing i:nth-child(2n) { animation-delay: -.4s; }
.sound-emblem.is-playing i:nth-child(3) { animation-delay: -.7s; }
.audio-eyebrow { color: #a7b3b8; font-size: 10px; letter-spacing: 1px; }
.now-playing strong { display: flex; align-items: center; gap: 13px; font: 22px "STSong", "SimSun", serif; letter-spacing: 3px; margin-top: 7px; white-space: nowrap; }
.now-playing small { font: 9px "Microsoft YaHei", sans-serif; color: #b39c77; letter-spacing: 1px; }
.audio-center { width: 470px; max-width: 47%; }
.play-controls { display: flex; align-items: center; justify-content: center; gap: 15px; }
.play-button { min-width: 141px; display: flex; gap: 12px; justify-content: center; align-items: center; padding: 10px 20px; border-radius: 6px; background: #dbb879; border: 1px solid #e6c593; color: #22313a; font-weight: 600; font-size: 13px; letter-spacing: 1px; }
.play-button:hover { background: #ebcc98; }
.restart-button { display: flex; align-items: center; gap: 9px; padding: 10px 16px; background: transparent; border: 1px solid #aa95784a; border-radius: 6px; color: #d1c3ad; font-size: 12px; }
.restart-button:hover { background: #ffffff08; border-color: #bc9c69; }
.timeline { display: flex; align-items: center; gap: 12px; margin-top: 13px; }
.timeline time { color: #a9b4b8; font: 10px Georgia, serif; min-width: 26px; }
.timeline time:last-child { text-align: right; }
input[type="range"] { appearance: none; -webkit-appearance: none; height: 3px; border-radius: 4px; outline: none; background: linear-gradient(to right, #d6b57f var(--progress), #50616b var(--progress)); cursor: pointer; min-width: 0; }
input[type="range"]::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 10px; height: 10px; border-radius: 50%; background: #e0c18f; border: 0; }
input[type="range"]::-moz-range-thumb { width: 10px; height: 10px; border-radius: 50%; background: #e0c18f; border: 0; }
input[type="range"]:disabled { opacity: .4; cursor: default; }
.timeline input { flex: 1; width: 100%; }
.volume-controls { display: flex; align-items: center; justify-content: flex-end; gap: 9px; flex: 1; }
.volume-controls input { width: 85px; }
.volume-controls > span { color: #a9b4b8; width: 30px; font: 10px Georgia, serif; text-align: right; }
.audio-error { position: absolute; bottom: calc(100% + 10px); left: 50%; transform: translateX(-50%); padding: 10px 18px; border: 1px solid #b9986390; background: #1a3240f5; color: #f1dbb6; border-radius: 6px; font-size: 12px; width: max-content; max-width: 92vw; }
.loading-overlay, .scene-error { position: absolute; inset: 0; background: #162e3de8; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 12px; z-index: 3; text-align: center; padding: 30px; }
.loading-seal { font: 40px "STSong", "SimSun", serif; color: #dbbb83; border: 1px solid #c5a47166; border-radius: 15px 3px; padding: 10px 18px; animation: breathe 1.5s infinite alternate; }
.loading-overlay p { color: #b9b3a5; letter-spacing: 3px; font-size: 12px; }
.scene-error p { max-width: 350px; line-height: 1.9; }
.scene-error span { font-size: 12px; color: #afb9bf; }
.notice { position: absolute; z-index: 20; left: 50%; top: 160px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; padding: 14px 18px; background: #f3ead8; border: 1px solid #c9a86f; box-shadow: 0 5px 24px #0003; border-radius: 7px; color: #443624; max-width: 90%; width: max-content; font-size: 13px; }
.notice button { background: none; border: 0; color: inherit; display: grid; place-items: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@keyframes wave { from { transform: scaleY(.35); } to { transform: scaleY(1); } }
@keyframes breathe { from { opacity: .5; } to { opacity: 1; } }
@keyframes reveal { from { opacity: .4; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 1700px) { .with-info .scene-area { right: 370px; } .info-panel { width: 370px; } .info-scroll { padding: 26px 35px; } .description { font-size: 15px; } }
@media (max-width: 1100px) { .museum-header, .exhibit-nav { padding-left: 22px; padding-right: 22px; } .nav-tip, .nav-caption { display: none; } .exhibit-tabs { width: 100%; justify-content: center; } .exhibit-tab { flex: 1; } .experience-tag { display: none; } .with-info .scene-area { right: 280px; } .info-panel { width: 280px; } .info-scroll { padding: 15px 23px; } .info-panel h2 { font-size: 43px; } .description { font-size: 13px; } .scene-tools { flex-wrap: wrap; gap: 8px; bottom: 15px; left: 16px; right: 16px; } .rotation-hint { padding: 8px 11px; } .rotation-hint div > span { font-size: 9px; } .volume-controls input, .volume-controls > span { display: none; } .volume-controls { flex: 0; } .audio-dock { padding: 17px 23px; gap: 20px; } .audio-center { max-width: 54%; width: 430px; } }
@media (max-width: 760px) { .museum-app { min-height: 380px; } .museum-header { height: 72px; padding: 0 17px; } .brand { gap: 11px; } .brand-seal { width: 32px; height: 37px; font-size: 22px; } h1 { font-size: 19px; letter-spacing: 2px; margin-bottom: 6px; } .brand p { font-size: 6px; letter-spacing: 1.4px; } .header-actions { gap: 0; } .icon-button { width: 32px; height: 34px; } .quiet-button { font-size: 11px; padding: 7px; } .exhibit-nav { top: 72px; height: 48px; padding: 0 8px; } .exhibit-tabs { gap: 0; } .exhibit-tab { gap: 6px; min-width: 0; padding: 0 10px; font-size: 13px; white-space: nowrap; } .tab-number { display: none; } .scene-area, .with-info .scene-area { inset: 120px 0 149px; } .scene-heading { top: 18px; left: 20px; } .scene-heading p { font-size: 16px; } .scene-heading > span { font-size: 8px; } .scene-tools { gap: 8px; flex-direction: column; align-items: center; bottom: 13px; } .rotation-hint { background: #102b3ade; padding: 7px 12px; gap: 9px; } .rotation-symbol { width: 29px; height: 29px; font-size: 10px; } .rotation-hint strong { font-size: 12px; } .rotation-hint div > span { margin-top: 3px; } .view-controls { padding: 3px 5px; } .view-controls button { height: 27px; } .info-panel { width: min(320px, 87vw); top: 120px; bottom: 149px; box-shadow: -30px 0 70px #08172399; } .info-panel h2 { font-size: 42px; } .panel-top { padding-top: 13px; } .info-scroll { padding-top: 12px; } .description { font-size: 13px; line-height: 1.9; } .ornament { margin: 17px 0; } .panel-footer { padding: 12px 23px; } .audio-dock { height: 149px; padding: 12px 18px; gap: 10px; display: grid; grid-template-columns: 1fr auto; grid-template-rows: 38px 1fr; } .now-playing { min-width: 0; gap: 10px; } .sound-emblem { width: 32px; height: 34px; gap: 2px; } .sound-emblem i { height: 8px; } .sound-emblem i:nth-child(2), .sound-emblem i:nth-child(4) { height: 16px; } .sound-emblem i:nth-child(3) { height: 22px; } .audio-eyebrow { font-size: 8px; } .now-playing strong { font-size: 18px; margin-top: 3px; } .now-playing small { font-size: 8px; } .audio-center { grid-column: 1 / 3; grid-row: 2; width: 100%; max-width: 100%; display: flex; flex-direction: column-reverse; gap: 11px; } .timeline { margin-top: 0; gap: 10px; } .play-controls { gap: 12px; } .play-button { padding: 8px 17px; font-size: 12px; min-width: 142px; } .restart-button { padding: 8px 14px; font-size: 11px; } .volume-controls { grid-column: 2; grid-row: 1; } .notice { top: 130px; } }
@media (max-height: 600px) and (min-width: 761px) { .museum-header { height: 66px; } .brand-seal { height: 38px; width: 36px; } h1 { font-size: 21px; margin-bottom: 4px; } .exhibit-nav { top: 66px; height: 44px; } .scene-area { top: 110px; bottom: 99px; } .info-panel { top: 110px; bottom: 99px; } .audio-dock { min-height: 99px; padding-top: 12px; padding-bottom: 12px; } .scene-heading { display: none; } .panel-footer { display: none; } .info-scroll { padding-top: 7px; } .info-panel h2 { font-size: 37px; margin-bottom: 12px; } .ornament { margin: 14px 0; } .timeline { margin-top: 9px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* Full-room panorama with the ivory and warm-wood controls of the approved scene. */
.museum-app { min-height: 320px; background: #3e3024; }
.scene-area, .with-info .scene-area { inset: 0; transition: none; }
.museum-header { height: 76px; background: linear-gradient(#201a15b0, #201a1530, transparent); border: 0; pointer-events: none; padding: 16px 26px; }
.brand, .header-actions { pointer-events: auto; }
.brand { gap: 12px; text-shadow: 0 2px 6px #26160780; }
.brand-seal { width: 34px; height: 40px; font-size: 24px; color: #f7dcaf; background: #3f301e50; border-color: #e6c697; }
h1 { font-size: 20px; letter-spacing: 3px; color: #ffedcd; margin-bottom: 5px; }
.brand p { font-size: 7px; color: #eddbc0; letter-spacing: 1.4px; }
.header-actions { padding: 4px 6px 4px 15px; border: 1px solid #bf9c675a; background: #eee1c9eb; border-radius: 7px; box-shadow: 0 3px 20px #33231120; }
.experience-tag { color: #786044; margin-right: 8px; letter-spacing: .5px; }
.experience-tag > span { background: #9d733a; }
.header-actions .icon-button { color: #594731; }
.header-actions .icon-button:hover, .header-actions .icon-button.active { color: #173c4d; background: #af87511b; border-color: #9a733f5a; }
.quiet-button { color: #3e5b66; border-color: #9c7b4b6e; }
.exhibit-nav { top: 84px; left: 50%; right: auto; transform: translateX(-50%); height: 40px; padding: 0 13px; gap: 15px; background: #182d3bed; width: max-content; max-width: calc(100% - 36px); border: 1px solid #d4b382c7; border-radius: 7px; box-shadow: 0 4px 17px #17161624; }
.nav-caption { display: none; }
.nav-tip { display: none; }
.exhibit-tabs { gap: 2px; }
.exhibit-tab { min-width: 81px; padding: 0 12px; font-family: "STSong", "SimSun", serif; font-size: 15px; letter-spacing: 2px; }
.tab-number { font-size: 8px; }
.exhibit-tab.selected { background: #cbab7530; border-bottom-color: #ecc485; }
.panorama-compass { position: absolute; top: 92px; left: 29px; display: flex; align-items: center; gap: 9px; color: #f7e6c5; text-shadow: 0 1px 5px #211407; font-size: 12px; pointer-events: none; }
.panorama-compass small { font-size: 10px; color: #e5d4b7; }
.scene-tools { bottom: 154px; left: 50%; right: auto; transform: translateX(-50%); align-items: center; flex-direction: column; justify-content: center; gap: 6px; width: max-content; max-width: calc(100% - 32px); }
.mode-switch { display: flex; gap: 3px; padding: 4px; background: #efe2cbeF; border: 1px solid #b78a50; border-radius: 7px; box-shadow: 0 3px 15px #32231126; pointer-events: auto; }
.mode-switch button { display: flex; align-items: center; justify-content: center; gap: 7px; padding: 9px 16px; color: #795c38; background: transparent; border: 1px solid transparent; border-radius: 4px; font-size: 12px; letter-spacing: .5px; }
.mode-switch button.chosen { color: #f5deba; background: #1e3b4c; border-color: #b49871; }
.mode-switch button small { font-size: 10px; opacity: .8; }
.gesture-hint { margin: 0; padding: 5px 13px; font-size: 10px; letter-spacing: .8px; color: #ffeacc; background: #2b211c86; border-radius: 20px; text-align: center; }
.view-controls { padding: 4px 6px; background: #17313ddd; border-color: #dfc3998c; }
.view-controls button { height: 26px; min-width: 29px; }
.view-controls .reset-view { font-size: 10px; }
.audio-dock { inset: auto 5% 29px; width: min(1100px, 90%); margin: 0 auto; min-height: 102px; padding: 16px 24px; gap: 22px; border: 1px solid #9f733f; outline: 1px solid #f1d9b2; outline-offset: 4px; border-radius: 12px 5px; background: linear-gradient(105deg, #f2e2c4f5, #f8eddbf5 48%, #ebd8b7f5); box-shadow: 0 10px 45px #3926134a, inset 0 0 0 5px #d4b5813b; color: #4a321c; }
.now-playing { gap: 13px; min-width: 210px; }
.sound-emblem { border-color: #a9844d55; background: #b98a4810; width: 42px; height: 45px; }
.sound-emblem i { background: #8e6135; }
.sound-emblem i:nth-child(3) { height: 27px; }
.sound-emblem i:nth-child(2), .sound-emblem i:nth-child(4) { height: 19px; }
.audio-eyebrow { color: #896b47; letter-spacing: .4px; font-size: 9px; }
.now-playing strong { color: #3f2a18; font-size: 24px; }
.now-playing small { color: #8c704c; }
.open-description { align-self: center; margin-left: auto; padding: 6px 9px; border: 1px solid #a782505f; border-radius: 4px; background: transparent; color: #70522f; font-size: 10px; }
.open-description:hover { color: #153749; background: #ac895329; }
.audio-center { width: 440px; max-width: 46%; }
.play-button { background: #1b3a4d; color: #f6deba; border-color: #ad8a56; font-size: 13px; font-weight: 400; }
.play-button:hover { background: #2b5165; }
.restart-button { color: #5b4025; border-color: #aa824a; background: #e5d2b340; }
.restart-button:hover { background: #d5b98e55; }
.timeline time, .volume-controls > span { color: #806344; }
.timeline input, .volume-controls input { background: linear-gradient(to right, #8e633a var(--progress), #bcac9290 var(--progress)); }
input[type="range"]::-webkit-slider-thumb { background: #8e633a; }
input[type="range"]::-moz-range-thumb { background: #8e633a; }
.volume-controls .icon-button { color: #765630; }
.volume-controls .icon-button:hover { background: #b0936326; border-color: #aa865369; }
.info-panel { top: 143px; bottom: 156px; right: 26px; width: 310px; border: 1px solid #bc9356; outline: 1px solid #efd7b3; outline-offset: 3px; border-radius: 10px 4px; background: #f1e5d0f5; box-shadow: 0 10px 50px #261a1155; }
.info-panel h2 { font-size: 42px; }
.info-scroll { padding: 12px 25px 20px; }
.panel-top { padding: 13px 20px 7px; }
.description { font-size: 13px; line-height: 1.95; }
.ornament { margin: 18px 0; }
.panel-footer { padding: 13px 22px; }
.notice { top: 140px; }
@media (max-width: 1100px) {
  .museum-header { padding: 14px 20px; } .with-info .scene-area { right: 0; }
  .exhibit-tabs { width: auto; } .exhibit-tab { flex: none; }
  .scene-tools { flex-wrap: nowrap; bottom: 152px; left: 50%; right: auto; }
  .audio-dock { gap: 18px; padding: 14px 22px; } .audio-center { max-width: 54%; }
  .info-panel { width: 284px; right: 18px; }
}
@media (max-width: 760px) {
  .museum-header { height: 66px; padding: 11px 15px; } h1 { font-size: 16px; letter-spacing: 1px; }
  .brand { gap: 9px; } .brand p { font-size: 5px; letter-spacing: 1px; } .brand-seal { width: 27px; height: 32px; font-size: 20px; outline-offset: 2px; }
  .header-actions { padding: 2px 3px; gap: 0; } .header-actions .icon-button { width: 30px; height: 30px; }
  .exhibit-nav { top: 73px; height: 37px; padding: 0 5px; max-width: calc(100% - 24px); }
  .exhibit-tab { min-width: 58px; padding: 0 9px; gap: 4px; font-size: 14px; letter-spacing: 1px; } .tab-number { display: none; }
  .scene-area, .with-info .scene-area { inset: 0; }
  .panorama-compass { top: 125px; left: 18px; font-size: 10px; gap: 7px; }
  .scene-tools { bottom: 173px; max-width: calc(100% - 22px); gap: 5px; }
  .mode-switch button { padding: 7px 10px; font-size: 11px; gap: 6px; }
  .mode-switch button small { font-size: 9px; } .gesture-hint { font-size: 8px; padding: 4px 10px; letter-spacing: .3px; }
  .view-controls { padding: 2px 4px; } .view-controls button { height: 24px; }
  .audio-dock { inset: auto 12px 17px; width: auto; height: 137px; min-height: 137px; padding: 10px 15px; gap: 8px; grid-template-rows: 34px 1fr; border-radius: 9px 4px; }
  .now-playing { min-width: 0; gap: 9px; } .sound-emblem { width: 31px; height: 33px; } .audio-eyebrow { font-size: 8px; }
  .now-playing strong { font-size: 20px; gap: 12px; margin-top: 3px; } .now-playing small { font-size: 8px; }
  .open-description { padding: 5px 8px; font-size: 10px; margin-left: 7px; }
  .audio-center { max-width: 100%; width: 100%; gap: 10px; } .play-button, .restart-button { padding-top: 7px; padding-bottom: 7px; }
  .info-panel { top: 122px; bottom: 171px; right: 15px; width: min(300px, calc(100% - 30px)); }
  .notice { top: 123px; } .panel-footer { display: none; }
}
@media (max-height: 620px) and (min-width: 761px) {
  .museum-header { height: 64px; } .exhibit-nav { top: 70px; height: 34px; }
  .scene-area, .with-info .scene-area { inset: 0; }
  .audio-dock { bottom: 18px; min-height: 87px; padding: 10px 21px; }
  .scene-tools { bottom: 126px; flex-direction: row; gap: 10px; } .gesture-hint { display: none; }
  .mode-switch button { padding: 7px 12px; } .view-controls { padding: 5px; }
  .info-panel { top: 116px; bottom: 126px; }
}
@media (max-height: 480px) and (max-width: 760px) {
  .museum-header { height: 54px; } .brand p { display: none; } .brand-seal { height: 25px; font-size: 17px; }
  .exhibit-nav { top: 58px; height: 31px; } .panorama-compass { top: 106px; }
  .audio-dock { left: 20%; right: 20%; height: 104px; min-height: 104px; bottom: 12px; grid-template-rows: 24px 1fr; padding: 7px 12px; }
  .sound-emblem { display: none; } .audio-eyebrow { display: none; } .now-playing strong { margin: 0; font-size: 17px; }
  .timeline { gap: 8px; } .audio-center { gap: 7px; } .play-button { min-width: 110px; } .restart-button { padding-left: 10px; padding-right: 10px; }
  .scene-tools { bottom: 133px; flex-direction: row; gap: 8px; } .gesture-hint { display: none; } .mode-switch button { padding: 5px 8px; }
  .mode-switch button small { display: none; } .info-panel { top: 101px; bottom: 131px; }
}

/* Supplied talking guide and the Seedance gallery film. */
.museum-media-actions { position: absolute; top: 142px; right: 26px; z-index: 6; display: flex; gap: 8px; }
.museum-media-actions > button { display: flex; align-items: center; gap: 8px; padding: 10px 14px; color: #f3dfbc; border: 1px solid #c9a471; border-radius: 6px; background: #173342ef; box-shadow: 0 4px 16px #21170c30; font-size: 14px; }
.digital-guide { position: absolute; z-index: 6; left: 26px; bottom: 161px; width: clamp(138px, 13vw, 188px); border: 1px solid #b48953; border-radius: 10px 3px; overflow: hidden; background: #f4eadc; color: #513c24; box-shadow: 0 6px 26px #25170c45; transition: width .2s; }
.digital-guide.expanded { width: min(290px, 34vw, calc((100dvh - 250px) * .75)); }
.guide-heading { display: flex; align-items: center; justify-content: space-between; gap: 3px; padding: 7px 8px 7px 11px; border-bottom: 1px solid #b892593c; font-size: 12px; white-space: nowrap; }
.guide-heading > div { display: flex; }
.guide-heading button { border: 0; background: transparent; color: #725b3d; display: grid; place-items: center; padding: 3px; }
.guide-picture { position: relative; width: 100%; aspect-ratio: 3 / 4; }
.guide-picture video { display: block; width: 100%; height: 100%; object-fit: contain; background: #f4eadc; }
.guide-picture-button { position: absolute; inset: 0; width: 100%; border: 0; background: transparent; display: grid; place-items: center; }
.guide-picture-button > span { width: 43px; height: 43px; border: 1px solid #ead2ac; border-radius: 50%; display: grid; place-items: center; padding-left: 2px; color: #ffe7bc; background: #173441dc; box-shadow: 0 2px 15px #182b3950; }
.guide-controls { display: flex; align-items: center; gap: 4px; padding: 6px; border-top: 1px solid #b892593c; }
.guide-controls button { display: flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid #b08b5b77; border-radius: 4px; padding: 8px; background: #193746; color: #f6dfba; min-height: 32px; font-size: 12px; }
.guide-controls button:first-child { flex: 1; }
.guide-controls button:last-child { background: transparent; color: #705132; }
.guide-error { margin: 0; padding: 6px 10px; font-size: 12px; line-height: 1.6; }
.hall-film-dialog { padding: 0; border: 1px solid #ba945a; border-radius: 12px; color: #f4dfbb; background: #132a36; width: min(1120px, 94vw); max-width: 94vw; max-height: 94dvh; box-shadow: 0 20px 80px #0009; }
.hall-film-dialog::backdrop { background: #10181de8; backdrop-filter: blur(7px); }
.hall-film-content > header { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 17px 24px; }
.hall-film-content > header span { font-size: 12px; color: #c0aa87; letter-spacing: 2px; }
.hall-film-content h2 { margin: 5px 0 0; font: 23px "STSong", "SimSun", serif; letter-spacing: 2px; }
.hall-film-content header button { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border: 1px solid #b6956570; border-radius: 5px; color: #f5dfbb; background: #f0c97b0a; font-size: 14px; white-space: nowrap; }
.hall-film-content video { display: block; width: 100%; max-height: calc(94dvh - 141px); aspect-ratio: 16 / 9; object-fit: contain; background: #090d10; }
.hall-film-content > p { margin: 0; padding: 13px 24px; color: #c5b89f; font-size: 14px; line-height: 1.6; }
.with-info .museum-media-actions { right: 355px; }
@media (max-width: 1100px) { .with-info .museum-media-actions { right: 295px; } .digital-guide { left: 18px; width: 138px; } }
@media (max-width: 760px) {
  .museum-media-actions, .with-info .museum-media-actions { top: 120px; right: 12px; gap: 5px; }
  .museum-media-actions > button { padding: 7px 9px; font-size: 12px; gap: 5px; }
  .digital-guide { left: 12px; bottom: 191px; width: 106px; }
  .digital-guide.expanded { width: min(230px, 55vw, calc((100dvh - 260px) * .75)); }
  .guide-heading { padding: 5px; font-size: 11px; }
  .guide-heading button:first-child { display: none; }
  .guide-controls { padding: 4px; gap: 3px; }
  .guide-controls button { padding: 6px 4px; font-size: 11px; gap: 3px; }
  .guide-controls button span { white-space: nowrap; }
  .hall-film-content > header { padding: 13px; gap: 8px; }
  .hall-film-content h2 { font-size: 19px; }
  .hall-film-content header span { font-size: 11px; letter-spacing: .5px; }
  .hall-film-content header button { font-size: 12px; padding: 8px; gap: 4px; }
  .hall-film-content > p { padding: 12px 14px; font-size: 12px; }
}
@media (max-height: 600px) and (min-width: 761px) {
  .digital-guide { width: 112px; bottom: 119px; }
  .guide-heading { padding: 5px; font-size: 11px; }
  .guide-controls button { padding: 5px; font-size: 11px; }
  .museum-media-actions { top: 122px; }
}

/* Keep the reference composition clear of large interface blocks. */
@media (min-width: 761px) {
  .brand > div { display: none; }
  .exhibit-nav { top: 21px; height: 37px; background: #173140d9; }
  .scene-tools { bottom: 147px; flex-direction: row; gap: 9px; }
  .scene-tools .gesture-hint { display: none; }
  .mode-switch { padding: 3px; }
  .mode-switch button { padding: 7px 12px; }
  .view-controls { padding: 4px; }
  .panorama-compass { top: 86px; }
  .museum-media-actions { top: 87px; }
  .audio-dock { bottom: 29px; }
}

.museum-loading{height:100vh;display:grid;place-items:center;color:#f7dfb5;background:#17313d;font-family:Microsoft YaHei,sans-serif}