:root { color-scheme: dark; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; color: #f7f4ee; background: #0d171b; --gold: #e4c99b; --muted: #a1afb7; }
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; }
button:focus-visible { outline: 2px solid var(--gold); outline-offset: 5px; }
button:disabled { opacity: .4; cursor: wait; }
[hidden] { display: none !important; }
#stage { background: radial-gradient(ellipse at 55% 48%, #2a3540, #10181e 76%); }
#stage, #stage canvas { width: 100%; height: 100%; display: block; touch-action: none; }
#stage canvas { cursor: grab; }
#stage canvas:active { cursor: grabbing; }
body:not([data-story-phase="complete"]) #stage canvas { cursor: default; }
.stage-light { position: fixed; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 50% 86%, #bb93570a, transparent 44%); }
.vignette { position: fixed; inset: 0; pointer-events: none; background: linear-gradient(180deg, #0b131aba, transparent 33%, transparent 65%, #0b131acc), linear-gradient(90deg, #0b131a66, transparent 25%, transparent 85%, #0b131a22); }
.frame { position: fixed; inset: 18px; pointer-events: none; opacity: .3; }
.frame i { position: absolute; width: 18px; height: 18px; border-color: #e4c99b70; border-style: solid; border-width: 0; }
.frame i:nth-child(1) { left: 0; top: 0; border-left-width: 1px; border-top-width: 1px; }
.frame i:nth-child(2) { right: 0; top: 0; border-right-width: 1px; border-top-width: 1px; }
.frame i:nth-child(3) { left: 0; bottom: 0; border-left-width: 1px; border-bottom-width: 1px; }
.frame i:nth-child(4) { right: 0; bottom: 0; border-right-width: 1px; border-bottom-width: 1px; }
.header { position: fixed; top: 0; left: 0; right: 0; padding: 34px 48px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand svg { width: 38px; height: 38px; stroke: var(--gold); stroke-width: 1.4; fill: none; }
.brand strong { display: block; font-weight: 500; font-size: 19px; letter-spacing: .2em; }
.model-selector { position: relative; display: inline-flex; align-items: center; border: 1px solid #e4c99b99; border-radius: 10px; background: #e4c99b14; box-shadow: 0 4px 16px #0002; transition: background .2s, border-color .2s; }
.model-selector:hover, .model-selector:focus-within { background: #e4c99b25; border-color: var(--gold); }
.model-selector select { font: inherit; font-size: 18px; font-weight: 600; line-height: 1.2; letter-spacing: .08em; color: inherit; background: transparent; border: 0; appearance: none; padding: 22px 34px 8px 12px; min-width: 132px; max-width: 210px; cursor: pointer; border-radius: inherit; }
.model-selector select:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.brand .model-selector-hint { position: absolute; left: 12px; top: 7px; display: block; margin: 0; font-size: 9px; line-height: 1; letter-spacing: .08em; color: var(--gold); pointer-events: none; }
.model-selector option { background: #142129; color: #f7f4ee; }
.brand .model-selector svg { position: absolute; right: 12px; bottom: 12px; width: 16px; height: 16px; stroke-width: 1.6; pointer-events: none; }
body[data-model-id="imust"] .caption { isolation: isolate; text-shadow: 0 2px 12px #071218; }
body[data-model-id="imust"] .caption::before { content: ""; position: absolute; z-index: -1; inset: -22px -24px; border-radius: 24px; background: radial-gradient(ellipse at 35% 45%, #0b1924ba, #0b19244d 70%, transparent); pointer-events: none; }
body[data-model-id="imust"] .caption .description { color: #dce5e7; }
@media (max-width: 640px) { .model-selector select { font-size: 15px; padding: 21px 27px 7px 10px; min-width: 96px; max-width: min(150px, calc(100vw - 232px)); } .brand .model-selector-hint { left: 10px; top: 7px; } .brand .model-selector svg { right: 9px; bottom: 11px; width: 13px; height: 13px; } }
.brand span { display: block; font-size: 8px; color: var(--muted); letter-spacing: .15em; margin-top: 7px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.live { font-size: 10px; color: #c4cccb; letter-spacing: .1em; margin-right: 12px; }
.live i { display: inline-block; width: 5px; height: 5px; background: var(--gold); border-radius: 50%; margin-right: 8px; box-shadow: 0 0 12px #e4c99b77; }
.text-button { font-size: 11px; padding: 9px 13px; background: #ffffff05; border: 1px solid #ffffff24; border-radius: 24px; white-space: nowrap; flex-shrink: 0; }
.text-button .line-icon { width: 12px; height: 12px; margin-left: 6px; color: var(--gold); }
.line-icon { width: 20px; height: 20px; display: inline-block; vertical-align: middle; fill: none; stroke: currentColor; stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto; }
.playback-icon .pause-path { display: none; }
#tour[aria-pressed="true"] .play-path { display: none; }
#tour[aria-pressed="true"] .pause-path { display: block; }
.icon-button { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid #ffffff20; border-radius: 50%; background: #1b252b66; font-family: Georgia, serif; font-style: italic; }
.icon-button svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.icon-button:hover, .text-button:hover { background: #ffffff16; }
.caption { position: fixed; top: 17%; left: 52px; max-width: 560px; }
.eyebrow { color: var(--gold); font-size: 9px; letter-spacing: .25em; margin: 0 0 21px; display: flex; align-items: center; gap: 12px; }
.eyebrow-line { width: 31px; height: 1px; background: var(--gold); }
h1 { font-family: "Songti SC", "SimSun", serif; font-weight: 400; font-size: clamp(42px, 4.5vw, 72px); letter-spacing: .06em; line-height: 1.35; margin: 0; text-shadow: 0 3px 30px #0004; }
h1 span { color: #e8d5b4; }
h1 em { color: var(--gold); font-style: normal; }
.description { font-size: 12px; color: #b5bfc4; font-weight: 300; margin: 22px 0 24px; line-height: 2; letter-spacing: .12em; }
.primary-button { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 12px 18px; background: var(--gold); color: #202829; font-size: 12px; border-radius: 2px; box-shadow: 0 6px 24px #0002; transition: background .2s, transform .2s; }
.primary-button:hover { background: #f1dbb9; transform: translateY(-2px); }
.primary-button .line-icon { transition: transform .3s; }
.primary-button:hover .line-icon { transform: translateX(3px); }
.journey-duration { display: flex; align-items: center; gap: 9px; font-size: 9px; color: #96a6ac; letter-spacing: .06em; margin: 14px 0 0; }
.journey-duration i { width: 3px; height: 3px; border-radius: 50%; background: #e4c99b80; }
.exhibit-note { position: fixed; right: 52px; top: 19%; text-align: right; display: grid; justify-items: end; gap: 12px; }
.exhibit-note strong { font-family: Georgia, serif; font-size: 42px; line-height: 1; font-weight: 400; color: #d5c5ab; }
.exhibit-note sup { font-family: "Segoe UI", sans-serif; font-size: 23px; vertical-align: top; }
.exhibit-note span { font-size: 8px; color: #9babad; letter-spacing: .22em; }
.exhibit-note i { display: block; width: 45px; height: 1px; background: #e4c99b66; margin-top: 4px; }
.exhibit-note small { font-size: 9px; color: #85959f; letter-spacing: .08em; }
.footer { position: fixed; bottom: 40px; left: 48px; right: 48px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.view-note { display: flex; align-items: center; gap: 13px; min-width: 182px; }
.view-note > span { color: var(--gold); font-family: Georgia, serif; font-size: 29px; font-weight: 300; font-variant-numeric: tabular-nums; }
.view-note strong { display: block; font-size: 12px; font-weight: 400; }
.view-note small { display: block; font-size: 8px; color: #8c9ba4; margin-top: 7px; letter-spacing: .08em; }
.toolbar { display: flex; align-items: center; padding: 6px; gap: 3px; border-radius: 50px; border: 1px solid #e4c99b26; background: #142129a8; box-shadow: 0 8px 32px #0003; backdrop-filter: blur(18px); }
.toolbar button { height: 40px; padding: 0 14px; background: transparent; border-radius: 30px; font-size: 12px; white-space: nowrap; transition: background .2s, color .2s; }
.toolbar button[aria-pressed="true"] { background: var(--gold); color: #222b2e; }
.toolbar button:hover:not([aria-pressed="true"]) { background: #ffffff12; }
.toolbar .reset { padding: 0; width: 36px; }
.toolbar .line-icon { width: 17px; height: 17px; }
#tour .line-icon, #quality-full .line-icon { margin-right: 6px; }
.divider { height: 17px; width: 1px; background: #ffffff26; margin: 0 6px; }
.gesture { font-size: 9px; color: #9caeb9; white-space: nowrap; min-width: 182px; text-align: right; letter-spacing: .03em; }
.gesture-line { display: inline-block; width: 23px; height: 1px; margin: 0 10px 3px 0; background: var(--gold); }
.tour-readout { position: fixed; bottom: 126px; left: 50%; transform: translateX(-50%); width: min(470px, calc(100vw - 52px)); }
.tour-readout > div { display: flex; align-items: center; gap: 16px; font-size: 10px; color: #aebdc5; letter-spacing: .05em; }
.tour-readout strong { font-weight: 400; color: var(--gold); font-size: 12px; }
#tour-time { margin-left: auto; font-variant-numeric: tabular-nums; font-size: 9px; }
.tour-readout progress { margin: 14px 0 0; height: 1px; background: #ffffff25; }
.exhibition-ui { transition: opacity 1.1s ease, transform 1.1s ease; }
body:not([data-story-phase="complete"]) .exhibition-ui { opacity: 0; visibility: hidden; transform: translateY(10px); pointer-events: none; }
body[data-loaded="true"][data-story-phase="complete"] .caption { animation: reveal 1.1s ease both; }
body[data-loaded="true"][data-story-phase="complete"] .exhibit-note { animation: reveal 1.2s .15s ease both; }
@keyframes reveal { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.immersive .exhibition-ui { opacity: 0; visibility: hidden; pointer-events: none; }
.immersive .frame { opacity: .2; }
.exit-immersive { position: fixed; right: 32px; top: 30px; padding: 11px 16px; border: 1px solid #ffffff29; border-radius: 24px; background: #121e26b8; backdrop-filter: blur(12px); font-size: 11px; color: #c0ccd0; }
.exit-immersive span { color: #7c919f; margin-left: 12px; font-size: 9px; }
.loading { position: fixed; z-index: 30; inset: 0; display: grid; place-items: center; background: radial-gradient(ellipse at 50% 45%, #253238, #0d171b 70%); }
.loading-card { width: min(640px, calc(100vw - 48px)); text-align: center; }
.loading-card .eyebrow { justify-content: center; }
.loading-mark { height: 43px; display: flex; align-items: flex-end; justify-content: center; gap: 6px; margin: 0 auto 33px; opacity: .6; }
.loading-mark span { width: 11px; height: 37px; border: 1px solid #e4c99b88; transform: skewY(-12deg); animation: breathe 1.8s ease-in-out infinite; }
.loading-mark span:nth-child(2) { height: 43px; animation-delay: .15s; }
.loading-mark span:nth-child(3) { animation-delay: .3s; }
@keyframes breathe { 50% { opacity: .3; transform: skewY(-12deg) translateY(-4px); } }
h2 { font-size: 24px; font-weight: 400; letter-spacing: .12em; margin: 0 0 18px; }
#status { color: #b4c0c8; font-size: 12px; min-height: 20px; }
progress { width: 100%; height: 2px; border: 0; display: block; background: #364249; margin: 22px 0 16px; }
progress::-webkit-progress-bar { background: #ffffff20; }
progress::-webkit-progress-value { background: var(--gold); }
progress::-moz-progress-bar { background: var(--gold); }
.loading-card small { color: #8c9ba4; font-size: 11px; }
.loading-card h2 { font-family: "Songti SC", "SimSun", serif; font-size: clamp(30px, 3.9vw, 54px); line-height: 1.6; letter-spacing: .09em; margin-bottom: 30px; }
.loading-card h2 span { color: #e8d5b4; }
.loading-card progress { width: min(260px, 80%); margin: 22px auto 18px; height: 1px; }
.loading-card #status { font-size: 10px; letter-spacing: .12em; }
.loading-card small { font-size: 10px; letter-spacing: .1em; }
.cinema-bars { position: fixed; inset: 0; pointer-events: none; opacity: 1; transition: opacity 1.2s ease; }
.cinema-bars::before, .cinema-bars::after { content: ""; position: absolute; left: 0; width: 100%; height: clamp(26px, 6vh, 64px); background: #080f13; }
.cinema-bars::before { top: 0; }
.cinema-bars::after { bottom: 0; }
body[data-story-phase="complete"] .cinema-bars { opacity: 0; }
.story-screen { position: fixed; z-index: 12; inset: 0; background: linear-gradient(180deg, #0b141b85, transparent 40%); pointer-events: none; opacity: 0; transition: opacity 1.2s ease; }
body[data-story-phase="points"] .story-screen { opacity: 1; }
.story-quote { position: absolute; top: 12%; left: 52px; text-align: left; padding: 0; max-width: calc(100vw - 80px); }
.story-quote .eyebrow { justify-content: flex-start; font-size: 8px; letter-spacing: .22em; margin-bottom: 22px; }
.story-quote h2 { font-family: "Songti SC", "SimSun", serif; font-size: clamp(28px, 3vw, 44px); line-height: 1.5; font-weight: 400; letter-spacing: .08em; margin-bottom: 18px; text-shadow: 0 2px 24px #0008; }
.story-quote h2 span { color: #e8d5b4; }
.story-quote > p:last-child { font-size: 10px; color: #95a6ae; letter-spacing: .15em; }
.opening-readout { position: fixed; z-index: 15; left: 50%; bottom: clamp(56px, 9vh, 90px); transform: translateX(-50%); width: min(620px, calc(100vw - 56px)); text-align: center; }
.opening-steps { display: flex; justify-content: center; gap: 26px; padding: 0; list-style: none; margin: 0 0 23px; }
.opening-steps li { display: flex; align-items: center; gap: 7px; color: #758992; font-size: 9px; letter-spacing: .12em; transition: color .5s; }
.opening-steps li span { font-family: Georgia, serif; font-size: 10px; opacity: .6; }
.opening-steps li[aria-current="step"] { color: var(--gold); }
.opening-steps li[data-completed="true"] { color: #abb9bd; }
.opening-chapter span { font-size: 8px; color: var(--gold); letter-spacing: .2em; }
.opening-chapter p { font-family: "Songti SC", "SimSun", serif; font-size: 18px; font-weight: 400; letter-spacing: .15em; margin: 14px 0 30px; }
.opening-track { display: flex; align-items: center; gap: 24px; }
.opening-track progress { flex: 1; height: 1px; margin: 0; }
#retry { display: block; margin: 24px auto 0; padding: 10px 20px; background: var(--gold); border-radius: 20px; color: #222b2e; }
dialog { width: min(440px, calc(100vw - 40px)); border: 1px solid #ffffff27; border-radius: 14px; padding: 32px; background: #19262e; color: #edf0ee; box-shadow: 0 30px 100px #0008; }
dialog::backdrop { background: #0b141aaa; backdrop-filter: blur(5px); }
dialog h2 { font-size: 20px; }
dialog p:not(.eyebrow) { color: #bcc7cc; font-size: 13px; line-height: 1.9; }
dialog button { width: 100%; background: var(--gold); color: #222b2e; padding: 12px; border-radius: 6px; margin-top: 12px; }
.quality-setting { display: grid; gap: 9px; font-size: 13px; color: #e4c99b; }
.quality-setting select { width: 100%; padding: 11px; border: 1px solid #ffffff29; border-radius: 6px; background: #101b22; color: #edf0ee; font: inherit; }
.quality-setting small { font-size: 11px; line-height: 1.6; color: #9eafb8; }
@media (max-width: 1200px) { .gesture { display: none; } .footer { gap: 16px; } .live { display: none; } }
@media (min-width: 1000px) { .caption { display: grid; grid-template-columns: minmax(330px, 480px) 250px; column-gap: 48px; max-width: calc(100vw - 104px); } .caption .eyebrow { grid-column: 1 / -1; } .caption h1 { grid-column: 1; grid-row: 2 / 5; } .caption .description { grid-column: 2; grid-row: 2; margin: 6px 0 12px; align-self: end; } .caption .primary-button { grid-column: 2; grid-row: 3; align-self: start; } .caption .journey-duration { grid-column: 2; grid-row: 4; margin-top: 12px; align-self: start; } }
@media (max-width: 950px) { .caption { top: 15%; left: 36px; } .exhibit-note { right: 36px; top: 18%; } .exhibit-note strong { font-size: 43px; } .header { padding: 30px 32px; } .footer { left: 32px; right: 32px; bottom: 30px; flex-wrap: wrap; } .view-note { min-width: 154px; } .toolbar button { padding: 0 11px; } .tour-readout { bottom: 112px; } }
@media (max-width: 640px) { .frame { inset: 12px; } .header { padding: 23px 22px; gap: 10px; } .brand { gap: 8px; } .brand svg { width: 29px; } .brand strong { font-size: 16px; } .brand span { font-size: 7px; } .header-actions { gap: 7px; } .text-button { padding: 9px 11px; font-size: 10px; } .text-button .line-icon { display: none; } .icon-button { width: 30px; height: 30px; } .caption { left: 26px; right: 26px; top: 13%; } h1 { font-size: clamp(25px, 7vw, 32px); line-height: 1.4; } .eyebrow { font-size: 7px; margin-bottom: 12px; } .description { font-size: 10px; margin: 12px 0 14px; line-height: 1.8; } .primary-button { font-size: 10px; padding: 8px 13px; gap: 22px; } .primary-button .line-icon { width: 18px; height: 18px; } .exhibit-note { display: none; } .footer { left: 18px; right: 18px; bottom: max(24px, env(safe-area-inset-bottom)); justify-content: center; gap: 14px; } .view-note { min-width: 0; width: 100%; padding-left: 6px; } .view-note small { display: inline; margin-left: 12px; font-size: 7px; } .view-note strong { display: inline; font-size: 11px; } .view-note > span { font-size: 22px; } .toolbar { width: 100%; justify-content: center; flex-wrap: wrap; border-radius: 20px; } .toolbar button { padding: 0 12px; font-size: 11px; } .divider { display: none; } .tour-readout { bottom: 170px; } .exit-immersive { right: 22px; top: 22px; } }
@media (max-width: 640px) { .story-quote { left: 26px; top: 12%; max-width: calc(100vw - 52px); } .story-quote .eyebrow { font-size: 7px; letter-spacing: .12em; } .story-quote h2 { font-size: clamp(24px, 6.5vw, 34px); letter-spacing: .04em; } .story-quote > p:last-child { font-size: 9px; } .opening-chapter p { font-size: 13px; letter-spacing: .05em; } .opening-track { gap: 14px; } .journey-duration { font-size: 8px; } }
@media (max-width: 640px) { .caption .journey-duration { display: none; } }
@media (max-width: 360px) { .header { padding: 20px 18px; } .brand span { display: none; } .brand svg { width: 26px; height: 26px; } .brand strong { font-size: 15px; } .header-actions { gap: 6px; } .icon-button { width: 28px; height: 28px; } }
@media (max-height: 680px) and (min-width: 641px) { .caption { top: 110px; } h1 { font-size: 36px; } .description { margin: 12px 0; } .exhibit-note { top: 125px; } .header { padding-top: 22px; } .footer { bottom: 22px; } }
@media (max-height: 520px) { .caption, .exhibit-note { display: none; } .header { padding-top: 16px; } .footer { bottom: 16px; } }
@media (max-width: 640px) and (max-height: 760px) { .caption { top: 13%; } .caption h1 { font-size: 25px; } .caption .description, .caption .journey-duration { display: none; } .caption .primary-button { margin-top: 14px; } .story-quote > p:last-child { display: none; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }