.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.bmr-layout{display:grid;grid-template-columns:380px 1fr;gap:24px;margin-bottom:24px}.input-panel{background:var(--gray-50);border-radius:20px;padding:24px}.form-section h3{font-size:1rem;margin-bottom:20px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:0.85rem;font-weight:500;color:var(--gray-600);margin-bottom:8px}.gender-buttons,.unit-buttons{display:flex;gap:12px}.gender-btn,.unit-btn{flex:1;padding:10px;border:2px solid var(--gray-200);border-radius:12px;background:white;cursor:pointer;transition:all 0.2s;font-size:0.85rem;text-align:center}.gender-btn.active,.unit-btn.active{border-color:var(--primary-color);background:#e0e7ff}.gender-btn i,.unit-btn i{margin-right:6px}.form-range{width:100%;accent-color:var(--primary-color)}.form-select{width:100%;padding:10px 12px;border:1px solid var(--gray-300);border-radius:12px;background:white;font-size:0.85rem}.calc-btn{width:100%;padding:14px;font-size:1rem}.result-panel{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;min-height:500px}.result-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:500px;color:var(--gray-400)}.result-placeholder i{font-size:48px;margin-bottom:16px}.result-placeholder p{font-size:1.1rem}.result-placeholder span{font-size:0.8rem}.result-content{padding:24px}.bmr-result{text-align:center;padding:30px;background:linear-gradient(135deg, #1a1a2e, #16213e);border-radius:16px;margin-bottom:24px}.bmr-value{font-size:3rem;font-weight:700;color:#4ade80}.bmr-label{color:var(--gray-400);font-size:0.9rem;margin:8px 0}.bmr-unit{color:var(--gray-500);font-size:0.8rem}.daily-calories{margin-bottom:24px}.daily-calories h4{font-size:0.85rem;margin-bottom:12px;color:var(--gray-700)}.calorie-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:12px}.calorie-item{background:var(--gray-50);border-radius:12px;padding:12px;text-align:center}.calorie-label{display:block;font-size:0.7rem;color:var(--gray-500)}.calorie-value{display:block;font-size:1.2rem;font-weight:700;color:var(--gray-800)}.chart-container{height:200px;margin-bottom:24px}.result-detail{background:var(--gray-50);border-radius:16px;padding:16px;margin-bottom:24px}.detail-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:8px}.detail-item{display:flex;justify-content:space-between;padding:4px 0;font-size:0.8rem}.detail-item span:first-child{color:var(--gray-500)}.health-tips{background:#fef3c7;border-radius:16px;padding:16px}.health-tips h4{font-size:0.85rem;margin-bottom:12px;color:#92400e}.health-tips ul{margin:0;padding-left:20px;font-size:0.8rem;color:#78350f}.health-tips li{margin-bottom:6px}.knowledge-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.knowledge-card{background:var(--gray-50);border-radius:16px;padding:20px;text-align:center}.knowledge-card i{font-size:28px;color:var(--primary-color);margin-bottom:12px}.knowledge-card h4{font-size:0.85rem;margin-bottom:8px}.knowledge-card p{font-size:0.75rem;color:var(--gray-500);line-height:1.5}@media (max-width:1000px){.bmr-layout{grid-template-columns:1fr}.calorie-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.gender-buttons,.unit-buttons{flex-direction:column}.knowledge-grid{grid-template-columns:1fr}}