.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)}.mode-tabs{display:flex;gap:12px;margin-bottom:24px;border-bottom:1px solid var(--gray-200);padding-bottom:12px}.mode-btn{background:transparent;border:none;padding:10px 24px;border-radius:40px;cursor:pointer;font-size:0.9rem;transition:all 0.2s;color:var(--gray-600)}.mode-btn i{margin-right:8px}.mode-btn.active{background:var(--primary-color);color:white}.input-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:20px;margin-bottom:20px}.input-group label{display:block;font-size:0.85rem;font-weight:500;margin-bottom:8px;color:var(--gray-700)}.input-wrapper{position:relative}.input-wrapper .input-field{width:100%;padding:12px 16px;padding-right:60px;border:1px solid var(--gray-300);border-radius:12px;font-size:1rem}.input-wrapper .input-unit{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--gray-500);font-size:0.8rem}.calc-btn{width:100%;padding:12px;font-size:1rem}.comparison-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:start}.vehicle-card{background:var(--gray-50);border-radius:16px;padding:20px}.vehicle-card h4{margin-bottom:16px;color:var(--gray-700)}.vehicle-card .input-group{margin-bottom:12px}.vehicle-card .input-group label{font-size:0.75rem}.vs-divider{display:flex;align-items:center;padding-top:40px}.vs-divider span{background:var(--primary-color);color:white;padding:8px 16px;border-radius:40px;font-weight:700}.comparison-result{margin-top:20px;padding:20px;background:var(--gray-50);border-radius:16px}.result-section{margin-top:24px;background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.result-header h3{font-size:1rem;display:flex;align-items:center;gap:8px}.result-actions{display:flex;gap:8px}.result-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:16px;padding:20px}.result-card{background:var(--gray-50);border-radius:16px;padding:16px;display:flex;align-items:center;gap:12px}.result-icon{font-size:24px;color:var(--primary-color)}.result-info{flex:1}.result-label{font-size:0.7rem;color:var(--gray-500)}.result-value{font-size:1.2rem;font-weight:700;color:var(--gray-800)}.result-detail{padding:16px 20px;border-top:1px solid var(--gray-200)}.result-detail h4{font-size:0.85rem;margin-bottom:12px;color:var(--gray-700)}#detailContent{font-size:0.85rem;color:var(--gray-600);line-height:1.6}.fuel-rating{display:grid;grid-template-columns:repeat(5, 1fr);gap:12px;margin-top:16px}.rating-item{padding:16px;border-radius:12px;text-align:center}.rating-item.excellent{background:#d1fae5}.rating-item.good{background:#dbeafe}.rating-item.average{background:#fef3c7}.rating-item.poor{background:#fde68a}.rating-item.terrible{background:#fecaca}.rating-label{font-weight:700;display:block}.rating-range{font-size:0.75rem;display:block;margin:4px 0}.rating-desc{font-size:0.7rem;color:var(--gray-500)}.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}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.input-grid{grid-template-columns:1fr}.result-grid{grid-template-columns:repeat(2, 1fr)}.comparison-grid{grid-template-columns:1fr}.vs-divider{padding-top:0;justify-content:center}.fuel-rating{grid-template-columns:repeat(2, 1fr)}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.result-grid{grid-template-columns:1fr}.fuel-rating{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:1fr}}