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.aae-hvac-tools .workspace{display:grid;grid-template-columns:260px minmax(0,1fr);gap:2rem}.aae-hvac-tools .tool-sidebar{padding-top:.1rem}.aae-hvac-tools .tool-tabs{display:flex;flex-direction:column;gap:.5rem}.aae-hvac-tools .tool-tabs button{display:flex;align-items:flex-start;gap:.9rem;padding:1.15rem .85rem;border:1px solid transparent;border-left:3px solid transparent;text-align:left;background:white;color:var(--steel);width:100%}.aae-hvac-tools .tool-tabs button:hover{background:var(--mist)}.aae-hvac-tools .tool-tabs button[aria-selected=true]{background:var(--mist);border-color:var(--line);border-left-color:var(--red);color:var(--ink)}.aae-hvac-tools .tool-number{font-size:.875rem;font-family:var(--serif);font-weight:700;padding-top:2px;color:var(--steel)}.aae-hvac-tools .tool-tabs button[aria-selected=true] .tool-number{color:var(--red-dark)}.aae-hvac-tools .tool-name{display:block;font-size:1rem;font-weight:700}.aae-hvac-tools .tool-description{display:block;font-size:.875rem;margin-top:.35rem;line-height:1.4;color:var(--steel)}.aae-hvac-tools .sidebar-caption{margin-top:2rem;padding:1.1rem .9rem;border-top:1px solid var(--line);color:var(--steel)}.aae-hvac-tools .sidebar-caption .small-label{color:var(--ink)}.aae-hvac-tools .sidebar-caption p{font-size:.875rem;margin-top:.7rem}.aae-hvac-tools .tool-content{min-width:0}.aae-hvac-tools .section-heading{display:flex;justify-content:space-between;align-items:center;gap:1rem;border-bottom:4px solid var(--ink);padding-bottom:.8rem}.aae-hvac-tools .audience{font-size:.75rem;letter-spacing:.05em;color:var(--steel);text-align:right}.aae-hvac-tools .intro{color:var(--steel);margin:1rem 0 1.4rem}.aae-hvac-tools .calculator-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--line)}.aae-hvac-tools form{padding:1.5rem;min-width:0}.aae-hvac-tools .form-top{display:flex;align-items:center;justify-content:space-between;gap:.7rem;margin-bottom:.8rem}.aae-hvac-tools .units{display:flex;border:1px solid var(--line);padding:3px;gap:3px}.aae-hvac-tools .units button{border:0;background:white;color:var(--steel);padding:.35rem .55rem;min-width:40px;min-height:36px;font-weight:700}.aae-hvac-tools .units button[aria-pressed=true]{background:var(--ink);color:white}.aae-hvac-tools .field-hint{font-size:.875rem;color:var(--steel);line-height:1.5}.aae-hvac-tools .form-top+.field-hint{margin-bottom:1.2rem}.aae-hvac-tools label{display:block;font-weight:700;font-size:.875rem;margin-top:1.15rem;margin-bottom:.4rem}.aae-hvac-tools label span{font-weight:400;color:var(--steel)}.aae-hvac-tools input,.aae-hvac-tools select{width:100%;border:1px solid #929ba3;border-radius:2px;background:white;color:var(--ink);padding:.72rem .75rem;min-height:48px}.aae-hvac-tools input{font-size:1.15rem;font-variant-numeric:tabular-nums}.aae-hvac-tools input[aria-invalid=true]{border:2px solid var(--red-dark)}.aae-hvac-tools .input-wrap{position:relative}.aae-hvac-tools .input-wrap input{padding-right:3rem}.aae-hvac-tools .input-unit{position:absolute;right:1rem;top:50%;transform:translateY(-50%);color:var(--steel);font-size:.875rem;pointer-events:none}.aae-hvac-tools .input-wrap+.field-hint{margin-top:.35rem}.aae-hvac-tools .field-pair{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}.aae-hvac-tools .fan-heading{margin-top:1.3rem;color:var(--steel)}.aae-hvac-tools .fan-heading+.field-pair label{margin-top:.45rem}.aae-hvac-tools .form-actions{display:flex;align-items:center;gap:1rem;margin-top:1.5rem}.aae-hvac-tools .primary{background:var(--red);color:white;border:0;font-weight:700;font-size:1rem;padding:.8rem 1.2rem;min-height:48px}.aae-hvac-tools .primary:hover{background:var(--red-dark)}.aae-hvac-tools .text-button{color:var(--steel);background:transparent;border:0;padding:.7rem .5rem;min-height:44px;text-decoration:underline;text-underline-offset:.2em}.aae-hvac-tools .text-button:hover{color:var(--ink)}.aae-hvac-tools .form-error{font-size:.875rem;color:#a12425;border-left:3px solid var(--red);padding:.6rem .75rem;margin-top:1rem;background:#fff3f3}
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.aae-hvac-tools a{color:var(--blue)}
.aae-hvac-tools a:hover{color:var(--red-dark)}
.aae-hvac-tools .brand-links a:first-child{color:#fff}


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.aae-hvac-tools .source-links{display:flex;flex-wrap:wrap;gap:.7rem 1rem}
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