@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--color-bg: #f8faff;--color-surface: rgba(255, 255, 255, .85);--color-primary: #4F46E5;--color-primary-hover: #4338CA;--color-secondary: #0ea5e9;--color-success: #10b981;--color-error: #ef4444;--color-text-main: #1e293b;--color-text-muted: #64748b;--color-border: rgba(226, 232, 240, .8);--sidebar-width: 280px;--header-height: 60px;--border-radius-md: 12px;--border-radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--glass-bg: rgba(255, 255, 255, .7);--glass-backdrop: blur(16px)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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#0000000d;flex-shrink:0}.target-slot{flex:1;min-height:48px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:#00000005;padding:.5rem}.drop-placeholder{display:flex;align-items:center;gap:6px;color:var(--color-text-muted);font-size:.85rem;opacity:.6}.drop-placeholder-icon{font-size:1.2rem;animation:bobDown 1.5s ease-in-out infinite}@keyframes bobDown{0%,to{transform:translateY(0)}50%{transform:translateY(4px)}}.choices-tray{background:var(--color-surface);border-radius:var(--border-radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);border:2px solid var(--color-border);position:sticky;bottom:1rem;-webkit-backdrop-filter:var(--glass-backdrop);backdrop-filter:var(--glass-backdrop);transition:all .25s ease}.choices-tray.tray-hint{border-color:#4f46e54d;background:#4f46e505}.choices-tray.tray-is-over{border-color:var(--color-primary);background:#4f46e50f;box-shadow:0 0 0 3px 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.2s}.progress-panel-toggle:hover{color:var(--color-primary);background:#4f46e50a}.progress-panel-toggle span{flex:1;text-align:left}.progress-panel-content{padding:0 1rem 1rem;display:flex;flex-direction:column;gap:.75rem;animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.progress-section{display:flex;flex-direction:column;gap:.4rem}.progress-section-label{font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em}.export-code-container{display:flex;flex-direction:column;gap:.4rem}.progress-code-textarea{width:100%;font-family:SF Mono,Fira Code,monospace;font-size:.75rem;padding:.5rem;border:1px solid var(--color-border);border-radius:8px;background:#00000005;color:var(--color-text-main);resize:none;word-break:break-all}.progress-code-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px 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