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ease}.pg-step-content{background:#10b98108;border:1px solid rgba(16,185,129,.08);border-radius:10px;padding:16px;margin-bottom:12px}.pg-instruction{font-size:13px;color:#fffc;line-height:1.6;margin:0 0 10px}.pg-hint{font-size:12px;color:#f59e0b;background:#f59e0b0f;padding:8px 12px;border-radius:6px;border-left:3px solid rgba(245,158,11,.3);margin:0 0 10px}.pg-step-actions{display:flex;gap:8px;justify-content:flex-end}.pg-hint-btn{background:transparent;border:1px solid rgba(245,158,11,.3);color:#f59e0b;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:11px}.pg-next-btn{background:linear-gradient(135deg,#10b981,#06d6a0);border:none;color:#fff;padding:6px 16px;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600}.pg-abandon{background:transparent;border:none;color:#ffffff4d;cursor:pointer;font-size:11px;padding:4px 0}.pg-achievements-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.pg-achievement{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:10px;border:1px solid rgba(16,185,129,.08);transition:all .2s}.pg-achievement.unlocked{background:#10b9810d;border-color:#10b98133}.pg-achievement.locked{background:#ffffff04;opacity:.5}.pg-ach-icon{font-size:22px}.pg-ach-info h4{margin:0;font-size:12px;color:#fffc}.pg-ach-info p{margin:2px 0 0;font-size:10px;color:#ffffff59}.pg-toast{position:absolute;bottom:16px;left:50%;transform:translate(-50%);background:linear-gradient(135deg,#10b981e6,#06d6a0e6);color:#fff;padding:10px 20px;border-radius:30px;display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;box-shadow:0 4px 20px #10b9814d;animation:toastIn .4s ease,toastOut .4s ease 2.6s forwards}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toastOut{0%{opacity:1}to{opacity:0;transform:translate(-50%) translateY(-10px)}}:root.light .waveform-lab{background:#fffffff7;border-color:#0000001a}:root.light .wflab-header{background:#00000005;border-bottom-color:#00000014}:root.light .wflab-header h3{color:#1e293b}:root.light .montecarlo-panel{background:#fffffff7;border-color:#6366f126}:root.light .mc-header{background:#6366f108}:root.light .mc-header h3{color:#4f46e5}:root.light .smith-panel{background:#fffffff7;border-color:#5078c826}:root.light .smith-header h3{color:#3b82f6}:root.light .playground-panel{background:#fffffff7;border-color:#10b98126}:root.light .pg-header h3{color:#059669}:root.light .pg-lesson-info h4{color:#1e293b}:root.light .pg-instruction{color:#334155}:root.light .pg-ach-info h4{color:#1e293b}