:root{--vh-shadow-dark-faint:rgba(0,0,0,0.1);--vh-shadow-dark-subtle:rgba(0,0,0,0.2);--vh-shadow-dark-btn:rgba(0,0,0,0.25);--vh-shadow-dark-soft:rgba(0,0,0,0.3);--vh-shadow-dark-medium:rgba(0,0,0,0.35);--vh-shadow-dark-strong:rgba(0,0,0,0.45);--vh-shadow-dark-stronger:rgba(0,0,0,0.5);--vh-shadow-light-soft:rgba(255,255,255,0.7);--vh-shadow-light-strong:rgba(255,255,255,0.8);--vh-highlight-soft:rgba(255,255,255,0.3);--vh-border-light-soft:rgba(255,255,255,0.1);--vh-border-light-medium:rgba(255,255,255,0.12);--vh-glass-white-soft:rgba(255,255,255,0.08);--vh-glass-dark-soft:rgba(0,0,0,0.45);--vh-glass-dark-medium:rgba(10,14,25,0.65);--vh-glass-dark-strong:rgba(10,14,25,0.72);--vh-popup-shadow:0 16px 48px var(--vh-shadow-dark-strong);--vh-popup-image-shadow:0 8px 24px var(--vh-shadow-dark-btn);--vh-control-shadow-hover:2px 2px 4px var(--vh-shadow-dark-faint),-2px -2px 4px var(--vh-shadow-light-soft);--vh-control-shadow-active:inset 2px 2px 4px var(--vh-shadow-dark-subtle),inset -2px -2px 4px var(--vh-shadow-light-strong);--viewer-polygon-fill-default:var(--accent-hover);--viewer-polygon-border-default:var(--light-color);--viewer-info-dot-size:8px;--viewer-info-dot-color:var(--light-color);--viewer-info-dot-opacity:0.9}.hotspot{cursor:pointer;pointer-events:auto;position:absolute;transform-origin:center center;transform:translate(-50%,-50%);z-index:100}.info-hotspot{width:32px;height:32px;background-color:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--light-color);box-shadow:4px 4px 8px var(--vh-shadow-dark-soft),-4px -4px 8px var(--vh-shadow-light-strong);transition:all var(--transition-speed) ease;transform:translate(-50%,-50%) translateY(-2px)}.info-hotspot:hover{box-shadow:6px 6px 12px var(--vh-shadow-dark-stronger),-6px -6px 12px var(--vh-shadow-light-strong);transform:translateY(-3px)}.info-hotspot svg{width:16px;height:16px}.info-hotspot .hotspot-icon{width:60%;height:60%;object-fit:contain;filter:invert(1)}.info-hotspot-dot{width:var(--viewer-info-dot-size);height:var(--viewer-info-dot-size);border-radius:50%;background:var(--viewer-info-dot-color);opacity:var(--viewer-info-dot-opacity)}.image-hotspot{transition:filter var(--transition-speed) ease;display:block;width:100px;height:100px}.image-hotspot:hover{filter:brightness(1.1) drop-shadow(0 4px 12px var(--vh-shadow-dark-stronger))}.image-hotspot img{display:block;width:100%;height:100%;object-fit:contain}.polygon-hotspot{cursor:pointer;transition:opacity var(--transition-speed) ease}.polygon-hotspot:hover{opacity:.8}.polygon-container{pointer-events:none;z-index:5;position:absolute;top:0;left:0;width:100%;height:100%}#pano{position:relative}#pano .hotspot-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10}#pano .hotspot{pointer-events:auto;position:absolute;z-index:100}.link-hotspot{display:block;width:var(--hotspot-size,40px);height:var(--hotspot-size,40px);margin-left:var(--hotspot-offset,-20px);margin-top:var(--hotspot-offset,-20px);background-color:transparent;border-radius:50%;transition:filter var(--transition-speed) ease}.link-hotspot:hover{filter:brightness(1.2) drop-shadow(0 4px 8px var(--vh-shadow-dark-soft));transform:scale(1.1)}.link-hotspot .link-icon{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 2px 4px var(--vh-shadow-dark-soft))}.link-hotspot .link-marker{display:flex;align-items:center;justify-content:center;width:100%;height:100%;border:2px solid var(--light-color);border-radius:50%;background:var(--accent);box-shadow:0 4px 10px var(--vh-shadow-dark-medium)}.link-hotspot .link-marker::before{content:"";width:38%;height:38%;margin-left:-8%;border-top:3px solid var(--light-color);border-right:3px solid var(--light-color);transform:rotate(45deg)}.icon-hotspot{display:block;cursor:pointer;transition:filter var(--transition-speed) ease;width:40px;height:40px;margin-left:-20px;margin-top:-20px}.icon-hotspot:hover{filter:drop-shadow(0 4px 8px var(--vh-shadow-dark-soft)) brightness(1.1);transform:scale(1.1)}.icon-hotspot .custom-icon{display:block;width:100%;height:100%;object-fit:contain}.hotspot-popup{position:fixed;top:50%;left:50%;background:var(--vh-glass-dark-medium);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:var(--radius);box-shadow:var(--vh-popup-shadow),0 4px 12px var(--vh-shadow-dark-soft);max-width:500px;width:90%;max-height:80vh;z-index:1000;overflow:hidden;transform:translate(-50%,-50%) translateY(-8px);border:1px solid var(--vh-border-light-medium)}.hotspot-popup::before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:var(--vh-glass-dark-soft);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:0}.popup-content{position:relative;z-index:1;padding:2rem;padding-top:2.5rem;padding-right:4.75rem;overflow-y:auto;max-height:80vh;color:var(--light-color);display:flex;flex-direction:column;gap:.9rem}.popup-close{position:absolute;top:1rem;right:1rem;background:var(--vh-glass-white-soft);border:none;border-radius:var(--radius);width:36px;height:36px;font-size:1.5rem;cursor:pointer;color:var(--light-color);transition:all var(--transition-speed) ease;z-index:2;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px var(--vh-shadow-dark-medium);transform:translateY(-1px)}.popup-close:hover{color:var(--dark-color);box-shadow:var(--vh-control-shadow-hover);transform:translateY(0)}.popup-close:active{box-shadow:var(--vh-control-shadow-active);transform:translateY(1px)}.popup-title{font-size:1.4rem;font-weight:600;margin:0;color:var(--light-color);min-height:1.75rem;padding-right:0}.popup-body{font-size:1rem;line-height:1.6;color:var(--light-color);margin-top:0;padding-right:0;min-height:1.5rem}.popup-body p{white-space:pre-wrap;margin:0}.popup-icon,.popup-image{text-align:center;margin-bottom:1rem}.popup-icon img{max-width:80px;max-height:80px;object-fit:contain;filter:drop-shadow(0 4px 8px var(--vh-shadow-dark-soft))}.popup-image img{max-width:100%;max-height:400px;border-radius:8px;box-shadow:var(--vh-popup-image-shadow);border:1px solid var(--vh-border-light-soft)}.vh-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:10000;background:var(--vh-glass-dark-soft);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.vh-modal.vh-modal--open{display:flex}.vh-modal-inner{max-width:640px;width:92%;border-radius:14px;background:var(--vh-glass-dark-strong);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--light-color);border:1px solid var(--vh-border-light-medium);overflow:hidden;box-shadow:0 18px 48px var(--vh-shadow-dark-stronger),0 6px 18px var(--vh-shadow-dark-medium)}.vh-modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;color:var(--light-color);border-bottom:1px solid var(--vh-border-light-medium)}.vh-modal-title{margin:0;font-size:18px;font-weight:700;color:var(--light-color)}.vh-modal-close{font-size:20px;line-height:1;background:0 0;border:none;color:var(--light-color);cursor:pointer;opacity:.8}.vh-modal-body{padding:22px 18px;color:var(--light-color);display:flex;flex-direction:column;gap:12px;line-height:1.6}.vh-modal-image-wrap{margin-bottom:8px;text-align:center}.vh-modal-image-icon{max-width:64px;max-height:64px}.vh-modal-image-full{max-width:80vw;max-height:80vh;width:auto;height:auto}.vh-modal-text{margin:0}.vh-modal-placeholder{margin:0;padding-top:4px;opacity:.8}.icon-hotspot,.image-hotspot,.info-hotspot,.link-hotspot{display:block;visibility:visible;opacity:1}.info-hotspot .hotspot-icon{filter:invert(1)}.polygon-container svg{pointer-events:none;position:absolute;top:0;left:0;width:100%;height:100%}.polygon-container polygon{pointer-events:auto;cursor:pointer}.polygon-container--fade-out{transition:opacity .5s;opacity:0}.vq-status{position:absolute;top:16px;left:50%;z-index:25;max-width:min(620px,calc(100% - 32px));padding:10px 14px;background:var(--vh-glass-dark-strong);border:1px solid var(--vh-border-light-medium);border-radius:var(--radius);box-shadow:0 8px 24px var(--vh-shadow-dark-medium);color:var(--light-color);font-size:.9rem;font-weight:600;line-height:1.35;text-align:center;transform:translateX(-50%)}.vq-status[hidden]{display:none}.vq-question-rail{display:flex;flex-direction:column;width:218px;min-width:218px;overflow:hidden;background:var(--surface);border:1px solid var(--border-color-dark);border-radius:18px;box-shadow:var(--shadow-card)}body.vq-question-rail-active .viewer-scene-panel{display:none}.vq-question-rail-title{padding:14px 14px 0;margin:0;color:var(--dark-color);font-size:.92rem;font-weight:600}.vq-question-rail-help{padding:4px 14px 12px;margin:0;color:var(--text-muted);border-bottom:1px solid var(--border-color-strong);font-size:.76rem;line-height:1.35}.vq-question-rail-list{display:flex;flex:1;flex-direction:column;gap:10px;min-height:0;padding:14px;overflow-y:auto}.vq-question-button{width:100%;min-height:56px;padding:9px 10px;background:var(--surface-hover);border:1px solid var(--border-color);border-radius:14px;color:var(--text-muted);cursor:not-allowed;font-family:var(--font);text-align:left;box-shadow:var(--shadow-sm)}.vq-question-button span,.vq-question-button strong{display:block}.vq-question-button strong{color:inherit;font-size:.82rem;font-weight:700}.vq-question-button span{margin-top:4px;font-size:.7rem;font-weight:700}.vq-question-button.is-unlocked{background:var(--surface);border-color:var(--accent-border-active);color:var(--dark-color);cursor:pointer}.vq-question-button.is-current{box-shadow:inset 3px 0 0 var(--accent),var(--shadow-card)}.vq-question-button.is-complete{color:var(--accent)}.vq-dialog{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--vh-glass-dark-soft);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.vq-dialog[hidden]{display:none}.vq-dialog-inner{width:92%;max-width:640px;overflow:hidden;background:var(--vh-glass-dark-strong);border:1px solid var(--vh-border-light-medium);border-radius:14px;box-shadow:0 18px 48px var(--vh-shadow-dark-stronger),0 6px 18px var(--vh-shadow-dark-medium);color:var(--light-color);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.vq-title{padding:12px 16px;margin:0;color:var(--light-color);border-bottom:1px solid var(--vh-border-light-medium);font-size:18px;font-weight:700;line-height:1.25}.vq-body{display:flex;flex-direction:column;gap:12px;padding:22px 18px 0;color:var(--light-color);font-size:.94rem;line-height:1.6}.vq-body p{margin:0;white-space:pre-wrap}.vq-actions{display:flex;justify-content:flex-end;gap:10px;padding:22px 18px;margin-top:0}.vq-button{min-height:36px;padding:0 16px;background:var(--vh-glass-white-soft);border:1px solid var(--vh-border-light-medium);border-radius:10px;color:var(--light-color);cursor:pointer;font-family:var(--font);font-size:.86rem;font-weight:600;box-shadow:0 4px 12px var(--vh-shadow-dark-soft);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:background-color var(--transition-speed) ease,border-color var(--transition-speed) ease,box-shadow var(--transition-speed) ease}.vq-button:hover{background:var(--vh-highlight-soft);border-color:var(--vh-border-light-medium);box-shadow:0 6px 14px var(--vh-shadow-dark-medium)}.vq-button:focus-visible{outline:var(--focus-outline);outline-offset:var(--border-width-md)}@media (max-width:560px){.vq-dialog{align-items:flex-end;padding:12px}.vq-dialog-inner{width:100%}.vq-actions{align-items:stretch;flex-direction:column}.vq-question-rail{width:100%;min-width:0;max-height:180px}.vq-question-rail-list{flex-direction:row;overflow-x:auto;overflow-y:hidden}.vq-question-button{min-width:168px}}:root{--bg:#f4f7fb;--surface:#ffffff;--accent:#1a3d8f;--accent-hover:#2251c3;--font:Arial,Helvetica,sans-serif;--radius:8px;--dark-color:#0f172a;--light-color:#ffffff;--text-muted:#64748b;--gray-dark:#64748b;--border-width-md:2px;--border-color:rgba(15,23,42,0.1);--border-color-strong:rgba(15,23,42,0.16);--border-color-dark:rgba(15,23,42,0.22);--border-color-neutral:rgba(0,0,0,0.1);--accent-border-active:rgba(26,61,143,0.28);--hover-blue:rgba(26,61,143,0.07);--scene-thumbnail-border:rgba(15,23,42,0.3);--scene-thumbnail-border-active:rgba(26,61,143,0.45);--scene-thumbnail-gradient-start:#f8fafc;--scene-thumbnail-gradient-end:#eef2f7;--shadow-header:0 12px 32px -28px rgba(15,23,42,0.2);--shadow-card:0 12px 24px -18px rgba(15,23,42,0.18);--shadow-card-strong:0 18px 36px -22px rgba(15,23,42,0.2);--shadow-sm:0 1px 1px rgba(15,23,42,0.03);--transition-speed:0.2s;--focus-outline:2px solid rgba(26,61,143,0.35);--header-surface-translucent:rgba(255,255,255,0.94);--main-accent-radial:rgba(26,61,143,0.05);--preview-shell-gradient-start:#dde7f2;--preview-shell-gradient-end:#d0dcea;--preview-canvas-highlight:rgba(255,255,255,0.6);--preview-canvas-gradient-start:#cfd8e8;--preview-canvas-gradient-end:#c4d0e2;--header-height:84px;--panel-header-height:52px}*{box-sizing:border-box;margin:0;padding:0}body{min-width:320px;overflow:hidden;background-color:var(--bg);color:var(--dark-color);font-family:var(--font)}.skip-link{position:absolute;top:-40px;left:0;z-index:1001;padding:8px;background:var(--accent);color:var(--light-color)}.skip-link:focus{top:0}:focus{outline:var(--focus-outline);outline-offset:var(--border-width-md)}.scorm-hidden{display:none}.header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;height:var(--header-height);padding:0 20px;background:var(--header-surface-translucent);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-header);backdrop-filter:blur(14px)}.logo-container{position:relative;z-index:10;display:flex;align-items:center;gap:14px;width:218px;padding-left:0}.logo-wrapper{display:inline-block;width:auto;height:auto;padding:0;margin:0;overflow:visible;background:0 0;border:0;border-radius:0;box-shadow:none;line-height:0}.header-logo{display:block;width:auto;max-height:98px;margin:-18px;object-fit:contain}.header-center{display:flex;flex:1;justify-content:center}.header-actions{display:flex;align-items:center;justify-content:flex-start;width:240px}.main-container{display:flex;gap:20px;height:calc(100vh - var(--header-height));padding:20px;background:radial-gradient(circle at top left,var(--main-accent-radial),transparent 28%),var(--bg);transition:all .3s ease}.panel{display:flex;flex-direction:column;overflow:hidden;background:var(--surface);border:1px solid var(--border-color-dark);border-radius:18px;box-shadow:var(--shadow-card)}.scene-panel{width:218px;min-width:218px;background:var(--surface)}.ch360-viewer .viewer-scene-panel{display:flex}.ch360-viewer .viewer-scene-panel[hidden]{display:none}.panel-header{display:flex;align-items:flex-end;height:var(--panel-header-height);padding:14px 14px 12px;background:var(--surface);border-bottom:1px solid var(--border-color-strong)}.panel-header h2{color:var(--dark-color);font-size:.92rem;font-weight:600}.tab-panel{display:none;min-height:0}.tab-panel.active,.viewer-scenes-panel{display:flex;flex:1;min-height:0}.tab-content{flex:1;min-height:0;height:calc(100vh - var(--header-height) - var(--panel-header-height) - 60px);padding:0 14px 14px;overflow-y:auto;background:var(--surface)}.scene-list{display:flex;flex:1;flex-direction:column;margin-top:.25rem;overflow-y:hidden}.scene-item{display:flex;flex-shrink:1;align-items:center;min-height:0;padding:.35rem .5rem;margin:0 0 10px;gap:.4rem;cursor:pointer;background:var(--surface);border:1px solid var(--border-color);border-radius:14px;box-shadow:var(--shadow-sm);transition:all var(--transition-speed) ease}.scene-item:hover{border-color:var(--border-color-strong);box-shadow:var(--shadow-card);transform:translateY(-1px)}.scene-item.active{background:var(--hover-blue);border-color:var(--accent-border-active);box-shadow:inset 3px 0 0 var(--accent),var(--shadow-card)}.scene-thumbnail{width:36px;min-width:36px;height:36px;object-fit:cover;background:linear-gradient(180deg,var(--scene-thumbnail-gradient-start) 0,var(--scene-thumbnail-gradient-end) 100%);border:1px solid var(--scene-thumbnail-border);border-radius:10px}.scene-item.active .scene-thumbnail{border-color:var(--scene-thumbnail-border-active)}.scene-info{flex:1;min-width:0}.scene-name{margin-bottom:.1rem;overflow:hidden;color:var(--dark-color);font-size:.75rem;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.no-scenes-message{padding:2rem .5rem;color:var(--text-muted);font-size:.9rem;text-align:center}.preview-container{position:relative;display:flex;flex:1;flex-direction:column;min-width:0;overflow:hidden;background:linear-gradient(180deg,var(--preview-shell-gradient-start) 0,var(--preview-shell-gradient-end) 100%);border:1px solid var(--border-color-dark);border-radius:22px;box-shadow:var(--shadow-card-strong);transition:width .3s ease,max-width .3s ease}.ch360-viewer .preview-container{width:100%;height:calc(100vh - var(--header-height) - 40px)}.pano-preview,.pano-viewer{position:relative;flex:1;width:100%;min-height:0;overflow:hidden;background:radial-gradient(circle at top,var(--preview-canvas-highlight),transparent 36%),linear-gradient(180deg,var(--preview-canvas-gradient-start) 0,var(--preview-canvas-gradient-end) 100%);box-shadow:none}.preview-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--surface);border-radius:22px;transition:opacity .5s ease-out}.welcome-message{max-width:480px;padding:28px 32px;color:var(--dark-color);text-align:center}.welcome-message h2{margin-bottom:.6rem;color:var(--accent);font-size:1.45rem;font-weight:600}.welcome-message p{color:var(--text-muted);font-size:.95rem}.view-info-bar{padding:.75rem 1.5rem;margin-top:auto;color:var(--dark-color);background-color:var(--surface);border-top:2px solid var(--border-color-neutral)}.view-info-content{display:flex;align-items:center;justify-content:space-between;gap:1rem}.view-info-content .scene-name{color:var(--accent);font-size:1rem;font-weight:600}.view-controls-hint{color:var(--gray-dark);font-size:.85rem}