:root{--bg-color: #f8f9fa;--text-color: #212529;--primary-color: #007bff;--secondary-color: #6c757d;--surface-color: #ffffff;--border-color: #dee2e6;--accent-color: #28a745}body{background-color:var(--bg-color);color:var(--text-color);margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.app-container{max-width:1400px;margin:0 auto;padding:40px 20px;display:flex;flex-direction:column;gap:30px;overflow-x:hidden}.main-content{display:flex;gap:40px;align-items:flex-start}.synth-column{flex:0 0 900px;position:sticky;top:20px}.sidebar-column{flex:1;display:flex;flex-direction:column;gap:12px;min-width:350px}@media(max-width:1024px){.app-container{padding:20px 10px}.main-content{flex-direction:column;gap:20px}.synth-column{flex:0 0 auto;width:100%;position:static}.sidebar-column{min-width:0;width:100%}h1{font-size:24px}.intro-text{font-size:14px;padding:0 10px}.learning-panel{padding:20px 15px}.step-title{font-size:18px}}header{text-align:center}h1{font-weight:300;letter-spacing:-.5px;margin-bottom:10px}.recipe-grid{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.recipe-card{padding:6px 14px;background:var(--surface-color);border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all .2s ease;-webkit-user-select:none;user-select:none}.recipe-card:hover{border-color:var(--primary-color);background:var(--bg-color)}.recipe-card.active{background:var(--primary-color);border-color:var(--primary-color);box-shadow:0 2px 8px #007bff33}.recipe-card-name{font-size:13px;font-weight:500;color:var(--text-color);white-space:nowrap}.recipe-card.active .recipe-card-name{color:#fff}.synth-wrapper{background:#111;padding:2px;border-radius:8px;box-shadow:0 10px 30px #00000026;overflow:hidden;display:flex;justify-content:center;align-items:center;border:1px solid var(--border-color)}.learning-panel{background:var(--surface-color);padding:30px;border-radius:12px;box-shadow:0 2px 15px #0000000d;border:1px solid var(--border-color)}.step-nav{display:flex;align-items:center;gap:15px;margin-bottom:20px}.step-indicator{font-weight:700;color:var(--primary-color);font-size:12px;text-transform:uppercase;letter-spacing:1px}.step-title{font-size:20px;margin:0}.step-instruction{font-size:16px;line-height:1.6;color:#4a4a4a;margin:0}.concept-box{background:#f0f7ff;border-left:4px solid var(--primary-color);padding:15px 20px;margin-bottom:20px;border-radius:0 8px 8px 0}.concept-label{display:block;font-size:12px;font-weight:700;color:var(--primary-color);margin-bottom:5px;text-transform:uppercase}.concept-text{font-size:14px;margin:0;color:#334e68}.instruction-box{background:#fffbe6;border-left:4px solid #faad14;padding:15px 20px;margin-bottom:30px;border-radius:0 8px 8px 0}.instruction-label{display:block;font-size:12px;font-weight:700;color:#d48806;margin-bottom:5px;text-transform:uppercase}.step-controls{display:flex;justify-content:space-between}.nav-btn{padding:8px 16px;border:1px solid var(--border-color);background:#fff;border-radius:4px;cursor:pointer;font-size:14px}.nav-btn:disabled{opacity:.5;cursor:not-allowed}.nav-btn.secondary{background:#6c757d;color:#fff}.nav-btn.secondary:hover{background:#5a6268}.nav-btn.primary{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.intro-text{text-align:center;max-width:600px;margin:0 auto;color:var(--secondary-color)}.target-params-list{margin-top:15px;background:#fff9;padding:10px 15px;border-radius:6px;border:1px dashed #d48806}.target-params-list strong{display:block;font-size:13px;margin-bottom:5px;color:#d48806}.target-params-list ul{margin:0;padding-left:0;list-style-type:none}.target-params-list li{font-size:14px;margin-bottom:4px;display:flex;align-items:center}.param-name{font-weight:700;color:#555;width:110px;flex-shrink:0}.param-value{color:#007bff;font-family:monospace;font-weight:700;background:#007bff0d;padding:2px 6px;border-radius:4px}.app-footer{margin-top:40px;padding:20px 0;text-align:center;border-top:1px solid var(--border-color);color:var(--secondary-color);font-size:11px;letter-spacing:.5px}