:root{font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:#f7f5ed;background:#1c3631;color-scheme:light;font-synthesis:none;--ink:#203a36;--paper:#f6f3eb;--gold:#a58955;--muted:#6b736c;--line:#dddcd1}
*{box-sizing:border-box}html,body,main{width:100%;height:100%;margin:0;overflow:hidden}body{overscroll-behavior:none}button,select{font:inherit}button{cursor:pointer;min-height:44px;border:0;touch-action:manipulation;transition:background .18s,color .18s,box-shadow .18s}button:disabled{opacity:.45;cursor:wait}button:focus-visible,select:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid #c9a867;outline-offset:4px}[hidden]{display:none!important}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
#scene{display:block;width:100%;height:100%;touch-action:none;outline:none}.scene-shade{position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,#10241e66,transparent 22%,transparent 70%,#10241e7a);transition:opacity .5s}.topbar{position:absolute;top:max(30px,env(safe-area-inset-top));left:max(40px,env(safe-area-inset-left));right:max(40px,env(safe-area-inset-right));display:flex;justify-content:space-between;align-items:center;pointer-events:none;z-index:7}.identity{display:flex;align-items:center;gap:14px;text-shadow:0 1px 12px #10241e55}.museum-mark{width:34px;height:40px;fill:none;stroke:currentColor;stroke-width:1.25}.identity h1{font-family:Georgia,"Times New Roman",serif;font-size:20px;font-weight:400;letter-spacing:.14em;margin:0}.identity p{font-size:8px;letter-spacing:.14em;margin:8px 0 0;opacity:.78}.identity p span{padding:0 7px;opacity:.5}.header-actions{display:flex;gap:8px;pointer-events:auto}.icon-button{width:44px;height:44px;padding:0;border:1px solid #ffffff36;border-radius:50%;background:#172f284f;color:#fff;display:grid;place-items:center;backdrop-filter:blur(12px)}.icon-button:hover{background:#f6f3eb;color:var(--ink);border-color:#f6f3eb}.icon-button[aria-expanded=true]{background:var(--paper);color:var(--ink)}.mode-pill{position:absolute;top:38px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;border:1px solid #ffffff30;border-radius:30px;padding:8px 13px;background:#17322b80;backdrop-filter:blur(10px);font-size:10px;letter-spacing:.08em;pointer-events:none;z-index:2}.status-dot{width:5px;height:5px;border-radius:50%;background:#e3cf9e;box-shadow:0 0 0 3px #d4b87a16}
.eyebrow{font-size:9px;letter-spacing:.15em;font-weight:500}.intro{position:absolute;z-index:4;left:max(64px,env(safe-area-inset-left));bottom:clamp(74px,13vh,150px);animation:intro-enter .8s ease both}.intro-eyebrow{display:flex;align-items:center;gap:14px;color:#dfd5b8;font-size:9px;letter-spacing:.22em}.intro-eyebrow>span{width:34px;height:1px;background:#b59b67}.intro h2{font-family:Georgia,"Times New Roman",serif;font-weight:400;font-size:clamp(72px,7.2vw,110px);line-height:.91;letter-spacing:-.045em;margin:28px 0}.intro h2 em{font-weight:400;font-style:italic;color:#ede5d2}.intro-tagline{font-family:"Songti SC","SimSun",serif;font-size:24px;letter-spacing:.14em;margin:26px 0 16px}.intro-description{font-size:12px;line-height:1.95;color:#deded3;letter-spacing:.025em;margin:0}.intro-actions{display:flex;gap:12px;align-items:center;margin-top:31px}.entry-primary,.entry-secondary{display:flex;align-items:center;justify-content:center;gap:28px;min-height:50px;padding:0 24px;border-radius:6px;font-size:12px;letter-spacing:.05em}.entry-primary{background:var(--paper);color:var(--ink)}.entry-primary:hover{background:#fff;box-shadow:0 6px 20px #10241e30}.entry-secondary{gap:9px;background:#19302952;border:1px solid #ffffff40;color:var(--paper);backdrop-filter:blur(6px)}.entry-secondary:hover{background:#ffffff16}.entry-secondary>span{font-size:10px;opacity:.55;letter-spacing:0;margin-left:8px}.intro-details{display:flex;gap:13px;align-items:center;margin-top:26px;font-size:9px;letter-spacing:.06em;color:#dddaca9c}.intro-details i,.hint i{display:block;width:2px;height:2px;border-radius:50%;background:currentColor}
#experience[data-intro=true] .scene-shade{background:linear-gradient(90deg,#132b23ed 0%,#132b23b8 29%,#172e2340 63%,#132b2310),linear-gradient(0deg,#0d251d66,transparent 60%)}#experience[data-intro=true] .mode-pill,#experience[data-intro=true] .toolbar,#experience[data-intro=true] .hint,#experience[data-intro=true] .touch-controls,#experience[data-intro=true] .view-location{display:none}#experience[data-intro=true] .quiet-credit{opacity:.65}
.view-location{position:absolute;bottom:43px;left:40px;display:flex;gap:13px;align-items:center;pointer-events:none;text-shadow:0 1px 12px #12291c55}.location-line{height:32px;width:1px;background:#ccb680}.view-location .eyebrow{font-size:8px;color:#e4dcca;letter-spacing:.18em}.view-location p{font-size:10px;letter-spacing:.03em;margin:7px 0 0;color:#f4f1e4bd}.view-location p span{margin:0 5px;color:#bda571}.toolbar{position:absolute;z-index:3;left:50%;transform:translateX(-50%);bottom:max(34px,calc(env(safe-area-inset-bottom) + 20px));display:flex;align-items:center;gap:8px;padding:9px 10px 9px 18px;background:#f6f3ebf5;color:var(--ink);border:1px solid #ffffff70;border-radius:12px;box-shadow:0 8px 40px #10291f30;white-space:nowrap;backdrop-filter:blur(16px)}.tour-meta{display:flex;flex-direction:column;gap:5px;min-width:93px;padding-right:9px}.tour-meta .eyebrow{color:#7c7969;font-size:8px;letter-spacing:.12em}.tour-meta>span:last-child{font-size:10px;letter-spacing:.02em}.toolbar-divider{height:28px;width:1px;background:#d5d5c8;margin-right:6px}.toolbar button{display:flex;align-items:center;justify-content:center;gap:7px;padding:0 13px;min-height:44px;font-size:12px;border-radius:7px;background:transparent;color:var(--ink)}.toolbar button:hover{background:#e9e8dc}.toolbar .primary{background:var(--ink);color:var(--paper);min-width:120px}.toolbar .primary:hover{background:#31534b}.toolbar .primary .icon{width:17px;height:17px}.toolbar .reset-button{width:42px;padding:0}.toolbar .manual-button{font-size:11px;padding:0 10px}.toolbar .manual-button .icon{width:17px;height:17px}.tour-progress{position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:#203a361a;border-radius:2px;overflow:hidden}.tour-progress span{display:block;height:100%;width:0;background:var(--gold);transition:width .2s linear}
.hint{position:absolute;left:50%;bottom:118px;transform:translateX(-50%);display:flex;gap:12px;align-items:center;pointer-events:none;color:#fffaf0;font-size:10px;letter-spacing:.04em;text-shadow:0 1px 8px #10251b;opacity:.85;transition:opacity .8s}.hint.is-faded{opacity:0}.quiet-credit{position:absolute;bottom:max(12px,env(safe-area-inset-bottom));right:22px;font-size:8px;letter-spacing:.03em;color:#fff9;text-shadow:0 1px 4px #0009;pointer-events:none}.help-panel{position:absolute;z-index:8;right:max(40px,env(safe-area-inset-right));top:90px;width:360px;max-width:calc(100% - 32px);max-height:calc(100dvh - 130px);overflow:auto;border:1px solid #fff7;border-radius:12px;background:var(--paper);color:var(--ink);padding:22px 24px;box-shadow:0 16px 60px #10251c3d;scrollbar-width:thin;scrollbar-color:#bdc0b5 transparent;animation:panel-enter .2s ease-out}.help-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.help-heading .eyebrow{font-size:8px;color:var(--gold);letter-spacing:.2em}.help-panel h2{font-family:"Songti SC","SimSun",serif;font-weight:400;font-size:24px;letter-spacing:.05em;margin:8px 0 14px}.paper-icon-button{display:grid;place-items:center;background:transparent;color:#6c756c;width:44px;height:44px;padding:0;border-radius:50%}.paper-icon-button:hover{background:#e8e7dc}.help-section{display:flex;gap:15px;padding:15px 0;border-bottom:1px solid #deded2}.section-number{font-family:Georgia,serif;font-size:13px;color:var(--gold);padding-top:1px}.help-section h3{font-weight:500;font-size:12px;margin:0 0 7px}.help-section p{font-size:11px;line-height:1.85;color:#6a736a;margin:0}.help-section kbd{font:9px sans-serif;display:inline-block;min-width:16px;padding:0 3px;background:#eeece2;border:1px solid #d6d7cb;border-radius:3px;text-align:center;color:#42544a}.quality-label{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:12px;padding:20px 0}.quality-label small{display:block;font-size:9px;color:#7b8074;margin-top:7px}.quality-label select{background:#eeece3;color:var(--ink);border:1px solid #d8dbce;border-radius:5px;min-height:40px;padding:7px 10px;font-size:11px}.source-note{border-top:1px solid #deded2;padding-top:16px;font-size:9px;line-height:1.9;color:#7b8076}.source-note a{color:#62725d;text-underline-offset:3px}details{font-size:10px;margin-top:14px}summary{cursor:pointer}#stats{display:block;font-size:9px;white-space:pre-wrap;line-height:1.7;padding-top:8px;font-family:monospace}
.loading-layer{position:absolute;inset:0;display:grid;place-items:center;background:#1b342f;z-index:10}.loading-card{text-align:center;width:min(330px,80vw)}.loading-monogram{font:72px Georgia,serif;letter-spacing:-.17em;display:block;margin:0 0 35px;color:#e4ddc8;padding-right:12px}.loading-monogram>span{font-style:italic;font-size:62px;position:relative;top:12px}.loading-card .eyebrow{display:block;color:#c3b493;font-size:8px;letter-spacing:.2em}.loading-card h2{font-family:"Songti SC","SimSun",serif;font-weight:400;font-size:23px;letter-spacing:.06em;margin:26px 0 17px}.loading-card p{font-size:11px;color:#c8d0c6;line-height:1.8}.loading-card progress{display:block;width:100%;height:2px;border:0;margin:24px 0 18px;background:#ffffff16;accent-color:#c2ab78}.loading-card progress::-webkit-progress-bar{background:#ffffff16}.loading-card progress::-webkit-progress-value{background:#c2ab78;transition:width .25s}.loading-card .load-note{font-size:9px;opacity:.5}.loading-card button{background:#e8e1ce;color:var(--ink);border-radius:5px;font-size:12px;padding:10px 24px;margin-top:10px}.ui-notice{position:absolute;z-index:20;left:50%;bottom:120px;transform:translateX(-50%);max-width:calc(100% - 32px);padding:12px 20px;background:var(--paper);border-radius:8px;color:var(--ink);font-size:12px;box-shadow:0 5px 30px #10291c33}
.touch-controls,.touch-help{display:none}.move-pad{position:relative;width:126px;height:126px;touch-action:none;user-select:none}.pad-ring{position:absolute;inset:0;border-radius:50%;background:#193a2f66;border:1px solid #ffffff3b;backdrop-filter:blur(10px);box-shadow:inset 0 0 25px #173b2b30;pointer-events:none}.move-pad button{position:absolute;width:42px;height:42px;color:#f2f0df;border:0;border-radius:50%;padding:0;background:transparent;font-size:20px;font-family:Arial,sans-serif;touch-action:none;user-select:none}.move-pad button:active,.move-pad button.is-down{background:#e9e1cb77;color:#1a3428}.move-pad [data-move=forward]{top:0;left:42px}.move-pad [data-move=back]{bottom:0;left:42px}.move-pad [data-move=left]{top:42px;left:0}.move-pad [data-move=right]{top:42px;right:0}.pad-center{position:absolute;top:58px;left:58px;width:10px;height:10px;border-radius:50%;background:#ede2c0a6;box-shadow:0 0 0 5px #ede2c00a;pointer-events:none}body[data-touch=true] .touch-controls{display:block;position:absolute;left:max(22px,env(safe-area-inset-left));bottom:max(115px,calc(env(safe-area-inset-bottom) + 95px));z-index:2}body[data-touch=true] .touch-help{display:block}body[data-touch=true] .desktop-help{display:none}.touch-look-hint{display:block;text-align:center;font-size:9px;letter-spacing:.12em;padding-top:10px;color:#fffd;text-shadow:0 1px 5px #0008}
@keyframes intro-enter{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes panel-enter{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1050px){.view-location{display:none}.topbar{left:28px;right:28px}.intro{left:48px}}
@media(max-width:700px){.topbar{top:max(18px,env(safe-area-inset-top));left:22px;right:18px}.identity{gap:10px}.museum-mark{width:27px;height:34px}.identity h1{font-size:15px;letter-spacing:.1em}.identity p{font-size:7px;margin-top:7px;letter-spacing:.05em}.identity p span{padding:0 3px}.header-actions{gap:5px}.icon-button{width:40px;min-height:44px;border:0;background:#14302755}.icon-button .icon{width:19px}.mode-pill{top:78px;padding:7px 12px;font-size:9px}.intro{left:26px;right:26px;bottom:max(55px,calc(env(safe-area-inset-bottom) + 35px))}.intro-eyebrow{font-size:7px;letter-spacing:.18em;gap:10px}.intro-eyebrow>span{width:22px}.intro h2{font-size:83px;line-height:.92;margin:23px 0}.intro-tagline{font-size:20px;margin:23px 0 16px;letter-spacing:.1em}.intro-description{font-size:11px;line-height:1.9}.intro-actions{margin-top:27px;flex-wrap:wrap;gap:10px}.entry-primary,.entry-secondary{padding:0 19px;min-height:48px;font-size:11px;gap:19px}.entry-secondary{gap:5px}.entry-secondary>span{display:none}.intro-details{font-size:8px;gap:12px;margin-top:22px}.toolbar{bottom:max(28px,calc(env(safe-area-inset-bottom) + 16px));gap:5px;padding:8px 8px 8px 13px;border-radius:10px;max-width:calc(100% - 32px)}.tour-meta{min-width:81px;padding-right:5px;gap:5px}.tour-meta .eyebrow{font-size:7px}.tour-meta>span:last-child{font-size:9px}.toolbar-divider{margin-right:4px;height:26px}.toolbar button{font-size:11px;padding:0 11px}.toolbar .primary{min-width:106px}.toolbar .reset-button{width:38px}.toolbar .manual-button{width:38px;padding:0}.manual-button>span{display:none}.hint{bottom:111px;font-size:9px;width:max-content;max-width:calc(100% - 40px)}.quiet-credit{font-size:7px;bottom:9px;right:18px}.help-panel{right:16px;top:78px;padding:20px;max-height:calc(100dvh - 110px);width:350px}.help-panel h2{font-size:23px}.help-section{padding:13px 0}.help-section p{font-size:11px}.quality-label{padding:17px 0}.touch-help{display:block}.desktop-help{display:none}#experience[data-intro=true] .scene-shade{background:linear-gradient(90deg,#122b22cc,#122b2240),linear-gradient(0deg,#122b22f5 0%,#122b22a6 55%,#122b2226 100%)}}
@media(max-width:360px){.identity h1{font-size:13px}.identity p{font-size:6px}.identity{gap:7px}.museum-mark{width:24px}.header-actions{gap:0}.icon-button{width:35px}.intro h2{font-size:74px}.intro{left:24px;right:24px}.intro-details{gap:9px;font-size:7px}#experience[data-tour-state=playing] .tour-meta,#experience[data-tour-state=paused] .tour-meta,#experience[data-tour-state=playing] .toolbar-divider,#experience[data-tour-state=paused] .toolbar-divider{display:none}}
@media(max-height:670px) and (orientation:portrait){.intro{bottom:42px}.intro h2{font-size:66px;margin:18px 0}.intro-tagline{font-size:18px;margin:16px 0 12px}.intro-actions{margin-top:20px}.intro-details{margin-top:17px}.intro-description{font-size:10px}.intro-eyebrow{display:none}}
@media(max-height:520px) and (orientation:landscape){.topbar{top:17px;left:25px;right:25px}.identity h1{font-size:16px}.identity p{font-size:7px}.museum-mark{width:27px;height:33px}.mode-pill{top:23px}.intro{left:42px;bottom:42px}.intro h2{font-size:60px;margin:16px 0}.intro h2 br{display:none}.intro h2 em{margin-left:12px}.intro-eyebrow{font-size:7px}.intro-tagline{font-size:18px;margin:17px 0}.intro-description,.intro-details{display:none}.intro-actions{margin-top:20px}.entry-primary,.entry-secondary{min-height:44px;font-size:11px}.toolbar{bottom:22px}.touch-controls,body[data-touch=true] .touch-controls{bottom:26px;left:20px}.move-pad{transform:scale(.8);transform-origin:left bottom}.touch-look-hint,.view-location{display:none}.help-panel{top:69px;max-height:calc(100dvh - 87px);right:22px;padding:18px 22px}.hint{bottom:100px}.quiet-credit{font-size:7px}.tour-meta{min-width:80px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
.header-actions .icon-button{width:44px;min-width:44px}.toolbar .reset-button{width:44px;min-width:44px}.move-pad button{width:44px;height:44px}@media(max-width:700px){.toolbar .manual-button{width:44px;min-width:44px}}
#scene:focus-visible{outline:2px solid #c9a867;outline-offset:-4px}