.energy-calculator-page{max-width:1100px;margin:0 auto;padding:50px 20px 80px}.energy-calculator-header{max-width:800px;margin:0 auto 35px;text-align:center}.energy-calculator-header h1{margin:0 0 15px;font-size:clamp(30px,5vw,44px);line-height:1.2}.energy-calculator-header p{margin:0;color:#6b7280;font-size:17px}.energy-calculator{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:30px;box-shadow:0 5px 20px rgba(0,0,0,5%)}.energy-calculator h2{margin:0 0 22px;font-size:22px}.ec-form-group{margin-bottom:20px}.ec-form-group:last-child{margin-bottom:0}.ec-form-group label{display:block;margin-bottom:7px;font-size:14px;font-weight:600}.ec-input-wrapper{position:relative}.ec-input-wrapper input,.ec-input-wrapper select{width:100%;height:48px;padding:0 70px 0 14px;border:1px solid #d1d5db;border-radius:7px;background:#fff;color:#1f2937;font-size:16px;outline:none;transition:border-color .2s,box-shadow .2s}.ec-input-wrapper select{padding-right:14px}.ec-input-wrapper input:focus,.ec-input-wrapper select:focus{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.12)}.ec-unit{position:absolute;top:0;right:14px;height:48px;display:flex;align-items:center;color:#6b7280;font-size:14px;pointer-events:none}.ec-help{margin-top:5px;color:#6b7280;font-size:13px;line-height:1.5}.ec-duty-row{display:flex;align-items:center;gap:15px}.ec-duty-row input[type=range]{flex:1;accent-color:#2563eb}.ec-duty-value{min-width:55px;text-align:right;font-weight:600}.ec-results{padding:25px;background:#eff6ff;border-radius:10px}.ec-results h2{margin-bottom:22px}.ec-result-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.ec-result-item{padding:20px;background:#fff;border:1px solid #dbeafe;border-radius:8px}.ec-result-label{margin-bottom:6px;color:#6b7280;font-size:13px}.ec-result-value{font-size:23px;font-weight:700;line-height:1.3}.ec-main-result{grid-column:1/-1;background:#ecfdf5;border-color:#a7f3d0;padding:25px}.ec-main-result .ec-result-label{color:#047857;font-weight:600}.ec-main-result .ec-result-value{color:#047857;font-size:36px}.ec-note{margin-top:20px;padding-top:18px;border-top:1px solid #dbeafe;color:#6b7280;font-size:13px;line-height:1.6}.ec-content{max-width:850px;margin:55px auto 0}.ec-content h2{margin:40px 0 15px;font-size:28px;line-height:1.3}.ec-content h3{margin:28px 0 10px;font-size:21px}.ec-content p{margin:0 0 16px;color:#374151}.ec-formula{margin:20px 0;padding:18px;background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;font-family:monospace;overflow-x:auto}.ec-tip{margin:25px 0;padding:20px;background:#f9fafb;border-left:4px solid #2563eb;border-radius:4px}.ec-faq{margin-bottom:25px}.ec-faq h3{margin-bottom:8px}@media(max-width:768px){.energy-calculator-page{padding:35px 15px 60px}.energy-calculator{grid-template-columns:1fr;padding:20px}.ec-result-grid{grid-template-columns:1fr}.ec-main-result{grid-column:auto}}