.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #10b981, #059669);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #10b981);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat{background:white;border-radius:60px;padding:16px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.core-stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #d1fae5, #a7f3d0);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#10b981;font-size:1.3rem}.core-stat-info{text-align:left}.core-stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.core-stat-label{font-size:0.7rem;color:var(--gray-500)}.input-card{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:32px;padding:24px;margin-bottom:24px;border:1px solid var(--gray-200)}.input-group{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}.input-field-wrapper{flex:1;min-width:180px;display:flex;align-items:center;background:white;border:1px solid var(--gray-200);border-radius:60px;padding:8px 16px;transition:all 0.3s}.input-field-wrapper:focus-within{border-color:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,0.1)}.input-field-wrapper i{color:#10b981;font-size:1rem;margin-right:10px}.number-input{flex:1;border:none;padding:10px 0;font-size:1rem;background:transparent}.number-input:focus{outline:none}.input-unit{color:var(--gray-400);font-size:0.8rem;margin-left:8px}.preset-section{margin-bottom:28px}.preset-title{font-size:0.85rem;font-weight:500;color:var(--gray-600);margin-bottom:12px;display:flex;align-items:center;gap:8px}.preset-buttons{display:flex;flex-wrap:wrap;gap:10px}.preset-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:8px 18px;border-radius:40px;font-size:0.8rem;cursor:pointer;transition:all 0.2s}.preset-btn:hover{background:#10b981;border-color:#10b981;color:white;transform:translateY(-2px)}.result-area{animation:fadeIn 0.4s ease}.ppi-dashboard{display:flex;align-items:center;justify-content:center;gap:40px;margin-bottom:32px;flex-wrap:wrap}.ppi-gauge{position:relative;width:180px;height:180px}.gauge-center{position:absolute;top:50%;left:50%;transform:translate(-50%, -50%);text-align:center}.gauge-value{display:block;font-size:2.2rem;font-weight:700;color:var(--gray-800)}.gauge-unit{font-size:0.7rem;color:var(--gray-500)}.ppi-rating{text-align:center}.rating-badge{font-size:1.2rem;font-weight:600;padding:8px 24px;border-radius:40px;margin-bottom:8px}.rating-badge.retina{background:#d1fae5;color:#065f46}.rating-badge.high{background:#dbeafe;color:#1e40af}.rating-badge.medium{background:#fef3c7;color:#92400e}.rating-badge.low{background:#fee2e2;color:#991b1b}.rating-desc{font-size:0.8rem;color:var(--gray-500)}.metrics-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;margin-bottom:28px}.metric-card{background:white;border-radius:20px;padding:16px;display:flex;align-items:center;gap:14px;border:1px solid var(--gray-200);transition:all 0.3s}.metric-card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,0.08)}.metric-icon{width:44px;height:44px;background:linear-gradient(135deg, #d1fae5, #a7f3d0);border-radius:16px;display:flex;align-items:center;justify-content:center;color:#10b981;font-size:1.2rem}.metric-info{flex:1}.metric-label{display:block;font-size:0.7rem;color:var(--gray-500);margin-bottom:4px}.metric-value{display:block;font-size:1rem;font-weight:600;color:var(--gray-800)}.reference-table{background:var(--gray-50);border-radius:24px;overflow:hidden;margin-bottom:24px}.ref-header{background:linear-gradient(135deg, #f8fafc, #fff);padding:14px 20px;font-weight:600;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--gray-200)}.ref-content{padding:12px}.ref-row{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--gray-200)}.ref-row:last-child{border-bottom:none}.ref-row span:first-child{font-weight:500}.ref-row span:last-child{color:var(--gray-500);font-size:0.8rem}.formula-section{background:linear-gradient(135deg, #f0fdf4, #dcfce7);border-radius:24px;padding:20px;margin-top:20px}.formula-header{display:flex;align-items:center;gap:8px;font-weight:600;color:#065f46;margin-bottom:16px}.formula-content{display:flex;flex-direction:column;gap:12px}.formula-item{display:flex;justify-content:space-between;align-items:center;font-family:monospace;font-size:0.85rem;flex-wrap:wrap;gap:8px}.formula-desc{font-size:0.7rem;color:#065f46;font-family:inherit}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.metrics-grid{grid-template-columns:repeat(2, 1fr)}.input-group{flex-direction:column}.input-field-wrapper{width:100%}}@media (max-width:480px){.core-stats{gap:12px}.core-stat{padding:12px 20px}.metrics-grid{grid-template-columns:1fr}.preset-buttons{justify-content:center}.formula-item{flex-direction:column;align-items:flex-start}}