body{margin:0;overflow:hidden;font-family:sans-serif}.a-enter-vr{display:none!important}#scene-container{position:fixed;top:0;left:0;width:100%;height:100%;touch-action:none}.ui-overlay{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1000;text-align:center;padding:2rem;box-sizing:border-box}.ui-overlay.hidden{display:none}.ui-loading{background:#000c;color:#fff}.ui-error{background:#000000d9;color:#ff6b6b}.ui-guide{background:transparent;color:#fff;pointer-events:none;justify-content:flex-end;padding-bottom:4rem}.ui-guide #ui-message{background:#0009;padding:.8rem 1.5rem;border-radius:8px;font-size:1rem}.spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.3);border-top:3px solid white;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}.spinner.hidden{display:none}@keyframes spin{to{transform:rotate(360deg)}}#ui-message{font-size:1.2rem;line-height:1.6;white-space:pre-line;max-width:300px}.sticky-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:999;pointer-events:none}.sticky-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:transparent;pointer-events:auto;opacity:0;transition:opacity .3s ease}.sticky-overlay.sticky-visible{opacity:1}.sticky-content{max-width:90vw;max-height:80vh;object-fit:contain;border-radius:8px}.sticky-close-btn{position:absolute;top:1rem;right:1rem;width:44px;height:44px;border:none;border-radius:50%;background:#0009;color:#fff;font-size:1.5rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent}.sticky-close-btn:active{background:#000c}.action-buttons{position:fixed;bottom:2rem;right:1rem;z-index:1001;display:flex;flex-direction:column;gap:.75rem}.action-buttons.hidden{display:none}.action-btn{width:48px;height:48px;border:none;border-radius:50%;background:#0009;color:#fff;font-size:1.4rem;cursor:pointer;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.action-btn:active{background:#000c;transform:scale(.92)}.photo-preview-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:2000;background:#000000d9;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem}.photo-preview-image{max-width:90%;max-height:70vh;border-radius:8px;object-fit:contain;box-shadow:0 4px 24px #00000080}.photo-preview-controls{display:flex;gap:1rem;margin-top:1.5rem}.photo-preview-btn{padding:.75rem 2rem;border:none;border-radius:24px;font-size:1rem;font-weight:700;cursor:pointer;-webkit-tap-highlight-color:transparent}.photo-preview-btn-download{background:#4caf50;color:#fff}.photo-preview-btn-download:active{background:#388e3c}.photo-preview-btn-close{background:#fff3;color:#fff}.photo-preview-btn-close:active{background:#ffffff4d}.scan-frame{position:absolute;width:65vw;height:65vw;max-width:280px;max-height:280px;top:50%;left:50%;transform:translate(-50%,-60%);animation:scan-pulse 2s ease-in-out infinite}.scan-corner{position:absolute;width:28px;height:28px;border-color:#fff;border-style:solid}.scan-corner:nth-child(1){top:0;left:0;border-width:3px 0 0 3px}.scan-corner:nth-child(2){top:0;right:0;border-width:3px 3px 0 0}.scan-corner:nth-child(3){bottom:0;left:0;border-width:0 0 3px 3px}.scan-corner:nth-child(4){bottom:0;right:0;border-width:0 3px 3px 0}@keyframes scan-pulse{0%,to{opacity:.5}50%{opacity:1}}.progress-bar{width:200px;margin-top:1rem;text-align:center}.progress-fill{height:4px;background:#fff;border-radius:2px;transition:width .3s ease}.progress-label{font-size:.8rem;color:#ffffffb3;margin-top:.5rem}.retry-btn{margin-top:1.5rem;padding:.8rem 2rem;border:2px solid #ff6b6b;border-radius:8px;background:transparent;color:#ff6b6b;font-size:1rem;cursor:pointer;-webkit-tap-highlight-color:transparent}.retry-btn:active{background:#ff6b6b33}.orientation-warning{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;background:#000000e6;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem;box-sizing:border-box}.orientation-warning.hidden{display:none}.orientation-warning-icon{font-size:3rem;margin-bottom:1rem;animation:rotate-hint 1.5s ease-in-out infinite}.orientation-warning-message{font-size:1.1rem;line-height:1.6}@keyframes rotate-hint{0%,to{transform:rotate(0)}50%{transform:rotate(-90deg)}}.hint-toast{position:fixed;bottom:5rem;left:50%;transform:translate(-50%);background:#000000bf;color:#fff;padding:.7rem 1.2rem;border-radius:8px;font-size:.85rem;line-height:1.5;text-align:center;z-index:1500;opacity:0;transition:opacity .3s ease;pointer-events:none;white-space:pre-line;max-width:280px}.hint-toast-visible{opacity:1}.target-name-display{position:fixed;top:1rem;left:50%;transform:translate(-50%);z-index:1002;background:#0009;color:#fff;padding:.5rem 1.5rem;border-radius:20px;font-size:.95rem;font-weight:600;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);pointer-events:none;opacity:0;transition:opacity .3s ease;max-width:80vw;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.target-name-display.target-name-visible{opacity:1}.audio-play-prompt{position:fixed;top:0;left:0;right:0;padding:12px;background:#000c;color:#fff;text-align:center;z-index:10000;cursor:pointer;font-size:14px}.sticky-overlay--book-preview,.sticky-overlay:has(.sticky-content--book-preview){background:#000}.sticky-content--book-preview{width:100%;height:100%;display:flex;flex-direction:column;pointer-events:auto}.book-viewer{position:relative;width:100%;height:100%}.book-page-container{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:none}.book-page{max-width:100vw;max-height:100vh;width:100%;height:100%;object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none}.book-spinner{width:32px;height:32px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:book-spin .7s linear infinite;position:absolute}@keyframes book-spin{to{transform:rotate(360deg)}}.book-nav-btn,.book-indicator-area,.book-link-btn,.sticky-overlay--book-preview .sticky-close-btn{transition:opacity .3s ease}.book-ui-hidden{opacity:0!important;pointer-events:none!important}.book-nav-btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:none;border-radius:50%;background:#0006;color:#fff;font-size:1.4rem;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent;z-index:1;cursor:pointer}.book-nav-btn--prev{left:.5rem}.book-nav-btn--next{right:.5rem}.book-nav-btn:disabled{opacity:.2;pointer-events:none}.book-nav-btn:active{background:#000000b3}.book-indicator-area{position:absolute;bottom:4.5rem;left:0;right:0;text-align:center;z-index:2;pointer-events:none}.book-page-indicator{color:#fff;font-size:.85rem;text-shadow:0 1px 3px rgba(0,0,0,.8)}.book-progress{position:relative;width:60%;max-width:200px;height:3px;margin:0 auto .25rem;background:#2563eb4d;border-radius:2px}.book-progress__thumb{position:absolute;top:50%;width:10px;height:10px;border-radius:50%;background:#2563eb;transform:translate(-50%,-50%);transition:left .2s ease;box-shadow:0 1px 3px #00000080}.book-link-btn{position:absolute;bottom:1rem;left:50%;transform:translate(-50%);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;background:#2563eb;color:#fff;border:none;border-radius:8px;font-size:.95rem;font-weight:600;text-decoration:none;-webkit-tap-highlight-color:transparent;cursor:pointer;z-index:2}.book-link-btn:active{background:#1d4ed8}.book-link-btn--highlight{animation:book-link-pulse 2s ease-in-out infinite}@keyframes book-link-pulse{0%,to{box-shadow:0 0 #2563eb66}50%{box-shadow:0 0 0 8px #2563eb00}}