.phys-pg { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important; color: #1e293b !important; }
.phys-pg * { box-sizing: border-box; }

.phys-pg .pp-hero { background: linear-gradient(135deg, #1e3a5f 0%, #1565c0 50%, #0d47a1 100%) !important; padding: 50px 30px !important; text-align: center !important; color: #fff !important; border-radius: 18px !important; margin-bottom: 30px !important; position: relative !important; overflow: hidden !important; }
.phys-pg .pp-hero::before { content: '' !important; position: absolute !important; top: -50% !important; left: -50% !important; width: 200% !important; height: 200% !important; background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%) !important; }
.phys-pg .pp-hero h1 { font-size: 34px !important; font-weight: 800 !important; margin: 0 0 10px 0 !important; position: relative !important; line-height: 1.2 !important; color: #fff !important; letter-spacing: -0.5px !important; }
.phys-pg .pp-hero p { font-size: 16px !important; opacity: 0.9 !important; max-width: 650px !important; margin: 0 auto 18px auto !important; line-height: 1.6 !important; position: relative !important; color: #fff !important; }
.phys-pg .pp-hero .pp-badge-row { display: flex !important; gap: 8px !important; justify-content: center !important; flex-wrap: wrap !important; position: relative !important; }
.phys-pg .pp-unit-badge { display: inline-block !important; background: rgba(255,255,255,0.15) !important; color: #fff !important; font-size: 12px !important; padding: 4px 14px !important; border-radius: 20px !important; font-weight: 600 !important; cursor: pointer !important; transition: background 0.2s !important; border: 1px solid rgba(255,255,255,0.2) !important; }
.phys-pg .pp-unit-badge:hover, .phys-pg .pp-unit-badge.active { background: rgba(255,255,255,0.3) !important; }

.phys-pg .pp-safety { background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%) !important; border: 1px solid #fbbf24 !important; border-radius: 14px !important; padding: 16px 24px !important; margin-bottom: 28px !important; display: flex !important; align-items: flex-start !important; gap: 14px !important; }
.phys-pg .pp-safety-icon { flex-shrink: 0 !important; width: 36px !important; height: 36px !important; background: #fbbf24 !important; border-radius: 8px !important; display: flex !important; align-items: center !important; justify-content: center !important; font-size: 18px !important; color: #92400e !important; }
.phys-pg .pp-safety-text { font-size: 13px !important; line-height: 1.6 !important; color: #78350f !important; margin: 0 !important; }
.phys-pg .pp-safety-text strong { color: #92400e !important; }

.phys-pg .pp-grid { display: grid !important; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)) !important; gap: 20px !important; margin-bottom: 30px !important; }
.phys-pg .pp-card { background: #fff !important; border-radius: 14px !important; padding: 24px !important; box-shadow: 0 2px 12px rgba(0,0,0,0.05) !important; border: 1px solid #e2e8f0 !important; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s !important; text-decoration: none !important; color: #1e293b !important; display: block; position: relative !important; overflow: hidden !important; }
.phys-pg .pp-card.pp-hidden { display: none !important; }
.phys-pg .pp-card:hover { transform: translateY(-4px) !important; box-shadow: 0 12px 30px rgba(0,0,0,0.1) !important; border-color: #1976d2 !important; text-decoration: none !important; color: #1e293b !important; }
.phys-pg .pp-card-icon { width: 48px !important; height: 48px !important; border-radius: 12px !important; display: flex !important; align-items: center !important; justify-content: center !important; font-size: 22px !important; margin-bottom: 14px !important; }
.phys-pg .pp-card h3 { font-size: 17px !important; font-weight: 700 !important; margin: 0 0 6px 0 !important; line-height: 1.3 !important; color: #1e293b !important; letter-spacing: 0 !important; }
.phys-pg .pp-card p { font-size: 13px !important; color: #64748b !important; margin: 0 0 12px 0 !important; line-height: 1.5 !important; }
.phys-pg .pp-card-footer { display: flex !important; align-items: center !important; justify-content: space-between !important; }
.phys-pg .pp-card-unit { font-size: 11px !important; padding: 3px 10px !important; border-radius: 20px !important; font-weight: 600 !important; display: inline-block !important; }
.phys-pg .pp-card-cta { font-size: 13px !important; font-weight: 600 !important; color: #1565c0 !important; }
.phys-pg .pp-card:hover .pp-card-cta { color: #1976d2 !important; }

.phys-pg .pp-unit1 { background: #dbeafe !important; color: #1e40af !important; }
.phys-pg .pp-unit2 { background: #cffafe !important; color: #0e7490 !important; }
.phys-pg .pp-unit3 { background: #fef3c7 !important; color: #92400e !important; }
.phys-pg .pp-unit4 { background: #d1fae5 !important; color: #065f46 !important; }
.phys-pg .pp-icon-unit1 { background: #dbeafe !important; color: #2563eb !important; }
.phys-pg .pp-icon-unit2 { background: #cffafe !important; color: #0891b2 !important; }
.phys-pg .pp-icon-unit3 { background: #fef3c7 !important; color: #d97706 !important; }
.phys-pg .pp-icon-unit4 { background: #d1fae5 !important; color: #059669 !important; }

.phys-pg .pp-back { display: inline-flex !important; align-items: center !important; gap: 8px !important; background: linear-gradient(135deg, #0d47a1 0%, #1565c0 100%) !important; color: #fff !important; border-radius: 10px !important; padding: 10px 22px !important; font-size: 14px !important; font-weight: 600 !important; text-decoration: none !important; transition: transform 0.2s, box-shadow 0.2s !important; box-shadow: 0 3px 12px rgba(21,101,192,0.25) !important; margin-bottom: 20px !important; }
.phys-pg .pp-back:hover { transform: translateY(-2px) !important; box-shadow: 0 5px 18px rgba(21,101,192,0.35) !important; text-decoration: none !important; color: #fff !important; }

.phys-pg .pp-exp-hero { background: linear-gradient(135deg, #1e3a5f 0%, #1565c0 50%, #0d47a1 100%) !important; padding: 30px !important; text-align: center !important; color: #fff !important; border-radius: 18px !important; margin-bottom: 24px !important; position: relative !important; overflow: hidden !important; }
.phys-pg .pp-exp-hero h1 { font-size: 26px !important; font-weight: 800 !important; margin: 0 0 8px 0 !important; position: relative !important; line-height: 1.3 !important; color: #fff !important; }
.phys-pg .pp-exp-hero .pp-exp-meta { display: flex !important; gap: 10px !important; justify-content: center !important; flex-wrap: wrap !important; position: relative !important; }

.phys-pg .pp-lab-layout { display: grid !important; grid-template-columns: 1fr 380px !important; gap: 20px !important; margin-bottom: 24px !important; }
.phys-pg .pp-lab-bench { background: #fff !important; border-radius: 14px !important; padding: 24px !important; box-shadow: 0 2px 12px rgba(0,0,0,0.06) !important; border: 1px solid #e2e8f0 !important; min-height: 400px !important; position: relative !important; }
.phys-pg .pp-lab-bench h3 { font-size: 14px !important; font-weight: 700 !important; color: #64748b !important; text-transform: uppercase !important; letter-spacing: 0.5px !important; margin: 0 0 16px 0 !important; line-height: 1.3 !important; }
.phys-pg .pp-observation-panel { background: #fff !important; border-radius: 14px !important; padding: 24px !important; box-shadow: 0 2px 12px rgba(0,0,0,0.06) !important; border: 1px solid #e2e8f0 !important; }
.phys-pg .pp-observation-panel h3 { font-size: 14px !important; font-weight: 700 !important; color: #64748b !important; text-transform: uppercase !important; letter-spacing: 0.5px !important; margin: 0 0 16px 0 !important; line-height: 1.3 !important; }

.phys-pg .pp-reagent-shelf { display: flex !important; flex-wrap: wrap !important; gap: 10px !important; margin-bottom: 20px !important; }
.phys-pg .pp-reagent { display: inline-flex !important; align-items: center !important; gap: 6px !important; padding: 8px 14px !important; border-radius: 10px !important; font-size: 13px !important; font-weight: 600 !important; cursor: grab !important; transition: transform 0.15s, box-shadow 0.15s !important; border: 2px solid #e2e8f0 !important; background: #fff !important; color: #334155 !important; user-select: none !important; }
.phys-pg .pp-reagent:hover { transform: translateY(-2px) !important; box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important; border-color: #1976d2 !important; }
.phys-pg .pp-reagent.active { border-color: #1565c0 !important; background: #e3f2fd !important; }
.phys-pg .pp-reagent:active { cursor: grabbing !important; }
.phys-pg .pp-reagent .pp-dot { width: 10px !important; height: 10px !important; border-radius: 50% !important; flex-shrink: 0 !important; }

.phys-pg .pp-canvas-wrap { background: #f8fafc !important; border-radius: 12px !important; border: 1px solid #e2e8f0 !important; overflow: hidden !important; position: relative !important; margin-bottom: 16px !important; }
.phys-pg .pp-canvas-wrap canvas { display: block !important; width: 100% !important; }

.phys-pg .pp-controls { display: flex !important; gap: 10px !important; flex-wrap: wrap !important; }
.phys-pg .pp-btn { display: inline-flex !important; align-items: center !important; gap: 6px !important; padding: 10px 20px !important; border-radius: 10px !important; font-size: 14px !important; font-weight: 600 !important; cursor: pointer !important; transition: all 0.2s !important; border: none !important; text-decoration: none !important; }
.phys-pg .pp-btn-primary { background: linear-gradient(135deg, #0d47a1 0%, #1565c0 100%) !important; color: #fff !important; box-shadow: 0 3px 10px rgba(21,101,192,0.25) !important; }
.phys-pg .pp-btn-primary:hover { transform: translateY(-1px) !important; box-shadow: 0 5px 15px rgba(21,101,192,0.35) !important; color: #fff !important; }
.phys-pg .pp-btn-secondary { background: #f1f5f9 !important; color: #475569 !important; border: 1px solid #e2e8f0 !important; }
.phys-pg .pp-btn-secondary:hover { background: #e2e8f0 !important; color: #1e293b !important; }

.phys-pg .pp-steps { background: #fff !important; border-radius: 14px !important; padding: 20px 24px !important; box-shadow: 0 2px 12px rgba(0,0,0,0.06) !important; border: 1px solid #e2e8f0 !important; margin-bottom: 20px !important; }
.phys-pg .pp-steps h3 { font-size: 14px !important; font-weight: 700 !important; color: #64748b !important; text-transform: uppercase !important; letter-spacing: 0.5px !important; margin: 0 0 12px 0 !important; line-height: 1.3 !important; }
.phys-pg .pp-step-text { font-size: 15px !important; line-height: 1.6 !important; color: #1e293b !important; margin: 0 0 12px 0 !important; }
.phys-pg .pp-step-nav { display: flex !important; gap: 10px !important; }

.phys-pg .pp-physics { background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%) !important; border: 1px solid #90caf9 !important; border-radius: 14px !important; padding: 20px 24px !important; margin-bottom: 20px !important; }
.phys-pg .pp-physics h3 { font-size: 14px !important; font-weight: 700 !important; color: #1565c0 !important; text-transform: uppercase !important; letter-spacing: 0.5px !important; margin: 0 0 10px 0 !important; line-height: 1.3 !important; }
.phys-pg .pp-equation { font-size: 18px !important; font-weight: 600 !important; color: #0d47a1 !important; margin: 0 0 10px 0 !important; font-family: 'Georgia', serif !important; letter-spacing: 0.5px !important; }
.phys-pg .pp-explain { font-size: 14px !important; line-height: 1.7 !important; color: #334155 !important; margin: 0 !important; }

.phys-pg .pp-result-card { background: #f8fafc !important; border-radius: 10px !important; padding: 10px 14px !important; margin-bottom: 8px !important; border-left: 4px solid #1565c0 !important; display: flex !important; justify-content: space-between !important; align-items: center !important; gap: 8px !important; flex-wrap: wrap !important; }
.phys-pg .pp-result-label { font-size: 12px !important; font-weight: 600 !important; color: #64748b !important; margin: 0 !important; }
.phys-pg .pp-result-value { font-size: 15px !important; font-weight: 700 !important; color: #1565c0 !important; margin: 0 !important; line-height: 1.2 !important; font-family: monospace !important; }
.phys-pg .pp-result-detail { font-size: 12px !important; color: #64748b !important; margin: 0 !important; width: 100% !important; }
.phys-pg .pp-step-counter { font-size: 11px !important; font-weight: 700 !important; color: #1565c0 !important; text-transform: uppercase !important; letter-spacing: 0.5px !important; margin: 0 0 6px 0 !important; }

.phys-pg .pp-slider-group { margin-bottom: 16px !important; }
.phys-pg .pp-slider-label { font-size: 12px !important; font-weight: 600 !important; color: #475569 !important; margin: 0 0 6px 0 !important; display: flex !important; justify-content: space-between !important; }
.phys-pg .pp-slider { width: 100% !important; accent-color: #1565c0 !important; }

@media (max-width: 900px) {
    .phys-pg .pp-lab-layout { grid-template-columns: 1fr !important; }
    .phys-pg .pp-hero h1 { font-size: 26px !important; }
    .phys-pg .pp-grid { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    .phys-pg .pp-hero { padding: 30px 20px !important; }
    .phys-pg .pp-hero h1 { font-size: 22px !important; }
    .phys-pg .pp-reagent-shelf { gap: 6px !important; }
    .phys-pg .pp-reagent { padding: 6px 10px !important; font-size: 12px !important; }
    .phys-pg .pp-exp-hero h1 { font-size: 20px !important; }
}