:root{--webgl-primary: #9333ea;--webgl-secondary: #ec4899;--webgl-accent: #a855f7;--webgl-light: #f472b6;--webgl-bg-dark: rgba(30, 30, 40, .95);--webgl-bg-semi: rgba(30, 30, 40, .8);--webgl-bg-light: rgba(30, 30, 40, .7);--webgl-text-primary: rgba(255, 255, 255, .9);--webgl-text-secondary: rgba(255, 255, 255, .85);--webgl-text-muted: rgba(255, 255, 255, .7);--webgl-border-primary: rgba(147, 51, 234, .6);--webgl-border-secondary: rgba(255, 255, 255, .3);--webgl-border-light: rgba(255, 255, 255, .2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,Noto Sans KR,sans-serif;background:#0d0d0d;color:#eee;min-height:100vh;overflow:hidden}canvas{display:block}#static-loading{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--webgl-static-bg, #0d0d0d);display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:99999;color:#fff;font-family:Segoe UI,sans-serif;transition:opacity .4s}#static-loading .spinner{width:48px;height:48px;border:4px solid rgba(255,255,255,.15);border-top-color:var(--webgl-spinner-color, var(--webgl-accent, #a855f7));border-radius:50%;animation:webgl-spin .9s linear infinite;margin-bottom:16px}@keyframes webgl-spin{to{transform:rotate(360deg)}}#loading{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--webgl-loading-bg, linear-gradient(135deg, #0a0a1a 0%, #111128 50%, #0d0d1f 100%));display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:10000;transition:opacity .8s ease}#loading.hidden{opacity:0;pointer-events:none}#loading-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:#0d0d0d;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9997;gap:16px}.loading-bar-track{width:280px;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden}.loading-bar-fill{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);border-radius:3px;transition:width .3s}.loading-text{font-size:.85em;color:#ffffff80}.common-footer{font-family:Noto Sans KR,sans-serif;position:fixed;bottom:0;left:0;right:0;width:100%;background:#333333e6;color:#fff;padding:3px;text-align:center;font-size:14px;box-shadow:0 -2px 10px #0000004d;z-index:9999;pointer-events:auto}.common-footer a{color:gold;text-decoration:none;margin-left:10px;font-weight:700;transition:color .3s}.common-footer a:hover{color:orange;text-decoration:underline}.welcome-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000b3;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;z-index:9998;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.welcome-popup{background:#1a1a2e;border:2px solid #667eea;border-radius:20px;padding:40px;max-width:700px;width:90%;box-shadow:0 12px 48px #00000080;animation:popupSlideIn .4s ease-out;text-align:center}@keyframes popupSlideIn{0%{opacity:0;transform:scale(.8) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.welcome-popup h2{margin:0 0 25px;font-size:32px;font-weight:700;color:#a78bfa}.welcome-content{margin-bottom:25px;padding:20px 0}.welcome-content p{margin:12px 0;color:#eee;font-size:16px;line-height:1.6}.welcome-credits p{margin:8px 0;color:#aaa;font-size:15px}.welcome-credits strong{color:#a78bfa;font-weight:600}.welcome-close{padding:14px 32px;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;font-size:18px;font-weight:700;color:#fff;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea66}.welcome-close:hover{transform:translateY(-3px);box-shadow:0 8px 25px #667eea99}.welcome-close:active{transform:translateY(-1px)}@media(max-height:500px)and (orientation:landscape){.welcome-popup{max-height:85vh;padding:20px 28px;border-radius:14px;display:flex;flex-direction:column}.welcome-popup h2{font-size:22px;margin:0 0 10px}.welcome-content{margin-bottom:12px;padding:8px 0;overflow-y:auto;flex:1;min-height:0}.welcome-content p{font-size:13px;margin:6px 0;line-height:1.5}.welcome-content h3{font-size:14px;margin-top:10px!important}.welcome-credits p{font-size:12px;margin:4px 0}.welcome-close{padding:10px 24px;font-size:15px;border-radius:10px;flex-shrink:0}}.shortcut-toggle{position:fixed;top:20px;right:20px;padding:12px 24px;background:#9333eab3;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:#fff;border:2px solid var(--webgl-border-secondary);border-radius:12px;cursor:pointer;font-size:16px;font-weight:700;z-index:1000;transition:all .3s ease;box-shadow:0 4px 15px #0003}.shortcut-toggle:hover{transform:translateY(-2px);box-shadow:0 6px 20px #9333ea66;background:#9333eae6}.shortcut-toggle.active{background:#ec4899cc;border-color:#ffffff80}.shortcut-panel{position:fixed;top:80px;right:20px;width:300px;max-height:500px;background:var(--webgl-bg-semi);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);border:2px solid var(--webgl-border-light);border-radius:12px;padding:20px;z-index:1000;box-shadow:0 8px 32px #0000004d;overflow-y:auto;animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.shortcut-panel h3{margin:0 0 15px;color:#fff;font-size:20px;font-weight:700}.artwork-list{display:flex;flex-direction:column;gap:10px}.artwork-button{padding:12px;background:#9333ea99;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;border:1px solid var(--webgl-border-light);border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s}.artwork-button:hover{transform:translate(5px);background:#9333eae6;box-shadow:0 4px 12px #9333ea4d}.focus-panel{position:fixed;bottom:90px;left:50%;transform:translate(-50%);background:var(--webgl-bg-semi);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);border:3px solid var(--webgl-border-secondary);border-radius:16px;padding:30px;min-width:min(400px,90vw);max-width:700px;z-index:1000;box-shadow:0 8px 32px #0000004d;animation:slideUp .5s ease;max-height:80vh;overflow-y:auto;-webkit-overflow-scrolling:touch}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(50px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.artwork-info h2{margin:0 0 10px;color:var(--webgl-secondary);font-size:28px}.artwork-info p{margin:0 0 20px;color:var(--webgl-text-primary);font-size:16px;line-height:1.6;white-space:pre-line}.back-button{padding:12px 24px;background:#9333eacc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid var(--webgl-border-secondary);border-radius:8px;font-size:16px;font-weight:700;color:#fff;cursor:pointer;transition:all .3s}.back-button:hover{transform:translateY(-2px);background:#9333ea;box-shadow:0 6px 16px #9333ea66}@media(max-width:768px){.welcome-popup{padding:30px 20px;max-width:90%}.welcome-popup h2{font-size:24px;margin-bottom:20px}.welcome-content p{font-size:14px}.welcome-credits p{font-size:13px}.welcome-close{padding:12px 24px;font-size:16px}.focus-panel{min-width:auto;width:90%;padding:20px;bottom:60px}.shortcut-panel{width:90%;right:5%}.shortcut-toggle{padding:10px 16px;font-size:14px}.artwork-info h2{font-size:22px}.artwork-info p{font-size:14px}}@media(max-width:768px)and (orientation:portrait){.welcome-popup{max-height:none;overflow-y:auto;-webkit-overflow-scrolling:touch}.focus-panel{max-height:60vh;overflow-y:auto}}.interaction-hint{position:fixed;bottom:36px;left:0;right:0;text-align:center;z-index:100;pointer-events:none}.interaction-hint p{display:inline-block;padding:6px 20px;background:#0006;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:20px;color:#ffffffb3;font-size:12px;letter-spacing:.5px;margin:0}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.card{padding:2em}#app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.artwork-button{white-space:pre-line;font-size:14px;line-height:1.4;text-align:left}.bgm-control{position:fixed;bottom:42px;min-height:36px;left:20px;z-index:1000}.bgm-volume-row{display:flex;align-items:center;gap:6px;background:#1e143cb3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.15);border-radius:8px;padding:6px 10px}.bgm-icon-btn{background:none;border:none;cursor:pointer;font-size:18px;line-height:1;padding:0;transition:transform .15s;display:flex;align-items:center}.bgm-icon-btn:hover{transform:scale(1.2)}.bgm-shortcut-hint{font-size:10px;color:#ffffff73;font-weight:600;line-height:1;margin-right:2px;-webkit-user-select:none;user-select:none;align-self:flex-end;margin-bottom:1px}.bgm-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:90px;height:4px;border-radius:2px;background:#ffffff4d;outline:none;cursor:pointer}.bgm-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:#a855f7;cursor:pointer;border:2px solid white}.bgm-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#a855f7;cursor:pointer;border:2px solid white}.bgm-volume-value{font-size:11px;color:#ffffffb3;min-width:30px;text-align:right;-webkit-user-select:none;user-select:none}.artwork-info p{white-space:pre-line}.camera-settings{position:fixed;bottom:42px;right:20px;display:flex;flex-direction:column;gap:6px;z-index:1000}.setting-toggle{padding:8px 14px;background:#1e143cb3;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#ffffffbf;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s ease;white-space:nowrap}.setting-toggle:hover{background:#9333ea80;border-color:#9333ea99;color:#fff}.setting-toggle.active{background:#9333eab3;border-color:#a855f7cc;color:#fff}.mouse-rotation-status{position:fixed;bottom:128px;right:20px;z-index:1000;pointer-events:none}.rotation-indicator{display:grid;grid-template-columns:18px 22px 18px;grid-template-rows:16px 22px 16px;align-items:center;justify-items:center;background:#1e143c99;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:6px 8px;gap:1px;transition:opacity .3s}.rotation-indicator.disabled{opacity:.3}.rotation-indicator .arrow-up{grid-column:2;grid-row:1}.rotation-indicator .arrow-left{grid-column:1;grid-row:2}.rotation-indicator .mouse-icon{grid-column:2;grid-row:2}.rotation-indicator .arrow-right{grid-column:3;grid-row:2}.rotation-indicator .arrow-down{grid-column:2;grid-row:3}.rotation-indicator .arrow{font-size:10px;color:#ffffff80;line-height:1;display:flex;align-items:center;justify-content:center}.rotation-indicator .mouse-icon{font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center}