.hc-fs-calculator{--hc-blue:#1e73e8;--hc-orange:#fe7c0d;--hc-text:#202733;--hc-muted:#657080;--hc-border:#dce2ea;--hc-soft:#f6f8fb;box-sizing:border-box;color:var(--hc-text);font-family:inherit;max-width:1120px;margin:0 auto;font-size:16px;line-height:1.5}.hc-fs-calculator *{box-sizing:border-box}.hc-fs-calculator [hidden]{display:none!important}.hc-fs-calculator .hc-fs-header{margin:0 0 22px}.hc-fs-calculator .hc-fs-eyebrow{display:inline-block;color:var(--hc-blue);font-size:12px;font-weight:750;letter-spacing:.08em;margin-bottom:6px}.hc-fs-calculator h2{font-size:clamp(25px,3vw,34px);line-height:1.2;margin:0 0 9px;color:inherit}.hc-fs-calculator h3{font-size:18px;line-height:1.3;margin:0 0 12px}.hc-fs-calculator p{margin:8px 0 14px}.hc-fs-calculator label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:650;min-width:0}.hc-fs-calculator label span{font-weight:500;color:var(--hc-muted)}.hc-fs-calculator input,.hc-fs-calculator select{width:100%;min-width:0;min-height:44px;border:1px solid #cbd3df;border-radius:7px;padding:10px 11px;background:#fff;color:var(--hc-text);font:inherit;font-size:15px;box-shadow:none}.hc-fs-calculator input:focus,.hc-fs-calculator select:focus{outline:2px solid #1e73e833;border-color:var(--hc-blue)}.hc-fs-calculator select{appearance:none;-webkit-appearance:none;padding-right:34px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath d='m3 5 4 4 4-4' fill='none' stroke='%231e73e8' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}.hc-fs-calculator .hc-fs-method-panel,.hc-fs-calculator .hc-fs-efficiency-panel{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:18px;border:1px solid var(--hc-border);border-radius:12px;background:#fff}.hc-fs-calculator .hc-fs-mode{border:1px solid var(--hc-border);border-radius:12px;padding:18px;margin:16px 0;background:#fff}.hc-fs-calculator .hc-fs-input-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.hc-fs-calculator .hc-fs-help{font-size:13px;color:var(--hc-muted);margin:8px 0 14px}.hc-fs-calculator .hc-fs-actions{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.hc-fs-calculator button{font:inherit;font-size:14px;font-weight:700;border-radius:7px;min-height:43px;padding:10px 16px;cursor:pointer;transition:background-color .15s,border-color .15s}.hc-fs-calculator .hc-fs-calculate{background:var(--hc-blue);color:#fff;border:1px solid var(--hc-blue);margin-left:auto}.hc-fs-calculator .hc-fs-calculate:hover{background:#155fc5}.hc-fs-calculator .hc-fs-reset{background:#fff;color:var(--hc-blue);border:1px solid var(--hc-blue)}.hc-fs-calculator .hc-fs-reset:hover{background:#eef5ff}.hc-fs-calculator .hc-fs-error{padding:12px 14px;border:1px solid #e3a09b;background:#fff4f2;color:#9a2e24;border-radius:8px}.hc-fs-calculator .hc-fs-results{border:1px solid var(--hc-border);border-radius:12px;padding:22px;margin:20px 0;background:#fff}.hc-fs-calculator .hc-fs-result-heading{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--hc-blue)}.hc-fs-calculator .hc-fs-result-label{font-size:14px;color:var(--hc-muted);margin:12px 0 0}.hc-fs-calculator .hc-fs-primary{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}.hc-fs-calculator .hc-fs-primary strong{font-size:clamp(32px,5vw,48px);line-height:1.15;color:var(--hc-blue);letter-spacing:-.03em}.hc-fs-calculator .hc-fs-primary span{font-size:17px;font-weight:650}.hc-fs-calculator .hc-fs-result-kw{font-size:14px;color:var(--hc-muted)}.hc-fs-calculator .hc-fs-result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:20px 0}.hc-fs-calculator .hc-fs-result-grid>div{padding:14px;background:var(--hc-soft);border-radius:8px;display:flex;flex-direction:column;gap:7px;min-width:0}.hc-fs-calculator .hc-fs-result-grid span{font-size:12px;color:var(--hc-muted)}.hc-fs-calculator .hc-fs-result-grid strong{font-size:17px;overflow-wrap:anywhere}.hc-fs-calculator .hc-fs-result-grid small{font-size:12px;color:var(--hc-muted);line-height:1.4}.hc-fs-calculator .hc-fs-result-note{font-size:13px;color:var(--hc-muted);margin:14px 0 0}.hc-fs-calculator .hc-fs-info-box{display:grid;grid-template-columns:1fr 1fr;gap:22px;padding:20px;border:1px solid var(--hc-border);border-radius:12px;margin-top:24px;background:#fff}.hc-fs-calculator .hc-fs-info-box h3{margin:0 0 10px;font-size:17px}.hc-fs-calculator .hc-fs-info-box ol,.hc-fs-calculator .hc-fs-info-box ul{padding-left:20px;margin:0}.hc-fs-calculator .hc-fs-info-box li{font-size:13px;color:var(--hc-muted);margin:7px 0}.hc-fs-calculator .hc-fs-footer{text-align:center;color:var(--hc-muted);font-size:12px;padding:14px 0 4px}.hc-fs-calculator .hc-fs-footer a{color:inherit;text-decoration:underline}
@media(max-width:720px){.hc-fs-calculator .hc-fs-method-panel,.hc-fs-calculator .hc-fs-efficiency-panel,.hc-fs-calculator .hc-fs-input-grid,.hc-fs-calculator .hc-fs-info-box{grid-template-columns:1fr}.hc-fs-calculator .hc-fs-result-grid{grid-template-columns:1fr}.hc-fs-calculator .hc-fs-calculate{margin-left:0}.hc-fs-calculator .hc-fs-actions>*{flex:1 1 auto}}
@media(max-width:420px){.hc-fs-calculator .hc-fs-mode,.hc-fs-calculator .hc-fs-results{padding:14px}.hc-fs-calculator .hc-fs-method-panel,.hc-fs-calculator .hc-fs-efficiency-panel{padding:14px}}

/* HomeCostify standard UI revision — Furnace Sizing Calculator v1.0.7 */
.hc-fs-calculator{
  --hc-blue:#1e73e8;
  --hc-text:#2c3e50;
  --hc-muted:#52677e;
  --hc-border:#d8e1ec;
  --hc-soft:#f5f8fc;
  color:#435a72;
  font-size:14px;
  line-height:1.65;
}
.hc-fs-calculator h2{
  font-size:26px;
  line-height:1.25;
  font-weight:700;
  color:#2c3e50;
}
.hc-fs-calculator h3{
  font-size:17px;
  line-height:1.4;
  font-weight:700;
  color:#2c3e50;
}
.hc-fs-calculator p,
.hc-fs-calculator li{
  font-size:14px;
  line-height:1.65;
  color:#435a72;
}
.hc-fs-calculator label{
  font-size:14px;
  line-height:1.4;
  color:#2c3e50;
}
.hc-fs-calculator label span{
  color:#52677e;
}
.hc-fs-calculator input,
.hc-fs-calculator select{
  font-size:14px;
  color:#2c3e50;
  border-color:#d8e1ec;
}
.hc-fs-calculator .hc-fs-method-panel,
.hc-fs-calculator .hc-fs-efficiency-panel,
.hc-fs-calculator .hc-fs-mode,
.hc-fs-calculator .hc-fs-results{
  border-color:#d8e1ec;
}
.hc-fs-calculator .hc-fs-info-box{
  display:grid;
  grid-template-columns:minmax(0,1fr)!important;
  gap:22px;
  padding:20px;
  border:1px solid #d8e1ec;
  border-radius:12px;
  margin-top:24px;
  background:#fff;
}
.hc-fs-calculator .hc-fs-info-box>div{
  min-width:0;
  margin:0!important;
  padding:0!important;
  border:0!important;
  border-top:0!important;
  border-bottom:0!important;
}
.hc-fs-calculator .hc-fs-info-box h3{
  margin:0 0 10px;
}
.hc-fs-calculator .hc-fs-info-box ol,
.hc-fs-calculator .hc-fs-info-box ul{
  padding-left:20px;
  margin:0;
}
.hc-fs-calculator .hc-fs-info-box li{
  margin:7px 0;
}
.hc-fs-calculator .hc-fs-calculate,
.hc-fs-calculator .hc-fs-reset{
  background:#1e73e8!important;
  color:#fff!important;
  border:1px solid #1e73e8!important;
}
.hc-fs-calculator .hc-fs-calculate:hover,
.hc-fs-calculator .hc-fs-reset:hover{
  background:#155fc5!important;
  border-color:#155fc5!important;
  color:#fff!important;
}
.hc-fs-calculator .hc-fs-footer{
  color:#66798c;
  font-size:12px;
}
.hc-fs-calculator .hc-fs-footer a{
  color:#1e73e8;
  text-decoration:underline;
}
@media(max-width:720px){
  .hc-fs-calculator h2{font-size:24px}
  .hc-fs-calculator .hc-fs-info-box{
    grid-template-columns:minmax(0,1fr)!important;
    padding:17px;
    gap:20px;
  }
}