.input-group{margin-bottom:10px;display:flex;align-items:center;flex-wrap:wrap}.input-group label{width:130px;font-weight:bold}.input-group input{padding:8px;border:1px solid #ccc;border-radius:4px;flex:1;min-width:150px}.calc-item{background-color:#fff;border:1px solid #ddd;padding:15px;margin-bottom:15px;border-radius:5px;position:relative;box-shadow:0 1px 3px rgba(0,0,0,0.05);border-left:4px solid #b3a2c7}.calc-item h4{margin-top:0;margin-bottom:10px;color:#555;font-size:1em;border-bottom:1px dashed #ccc;padding-bottom:5px}.calc-field label{font-size:0.9em;margin-bottom:4px;font-weight:bold}.calc-field input,.calc-field select{padding:8px;border:1px solid #ccc;border-radius:4px;height:38px;box-sizing:border-box}.custom-modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:rgba(0,0,0,0.5);display:none;justify-content:center;align-items:center;z-index:9999;opacity:0;animation:fadeIn 0.2s forwards;box-sizing:border-box}.custom-modal-overlay[style*="display: flex"]{opacity:1}.custom-modal-content{background-color:#fff;padding:25px;border-radius:10px;width:90%;max-width:500px;box-shadow:0 4px 20px rgba(0,0,0,0.2);transform:translateY(-20px);animation:slideDown 0.3s forwards;position:relative;margin:auto;box-sizing:border-box}@keyframes slideDown{to{transform:translateY(0)}}input[type="number"]{-moz-appearance:textfield}.usage-guide-content{background-color:#fcfaff;border:1px solid #e1d3f0;border-radius:10px;padding:18px 25px;color:#555;line-height:1.8;width:100%;box-sizing:border-box;margin-top:10px;box-shadow:0 2px 8px rgba(74,59,108,0.05);animation:smoothDropdown 0.25s ease-out forwards;transform-origin:top}@keyframes smoothDropdown{from{opacity:0;transform:scaleY(0.95)}to{opacity:1;transform:scaleY(1)}}@keyframes fadeIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}