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7px;border-radius:var(--radius-pill);flex-shrink:0;align-self:flex-start}.chip-badge.plus{background:var(--clr-amber-lt);color:#92400E}.chip-badge.minus{background:var(--clr-primary-xlt);color:var(--clr-primary)}.step-nav{display:flex;gap:10px}.btn-calculate,.btn-next{flex:1 1;min-height:48px;padding:12px 20px;background:var(--clr-primary);color:white;border-radius:var(--radius-sm);font-size:15px;font-weight:500;font-family:var(--font-family-display),system-ui,sans-serif;transition:all var(--transition);border:none}.btn-calculate:hover,.btn-next:hover:not(:disabled){background:#085041;transform:translateY(-1px);box-shadow:var(--shadow-hover)}.btn-next:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.btn-back{min-height:48px;padding:12px 18px;border:1.5px solid var(--clr-border-def);border-radius:var(--radius-sm);font-size:15px;font-weight:500;color:var(--clr-text-mid);background:var(--clr-surface);transition:all var(--transition);flex-shrink:0}.btn-back:hover{border-color:var(--clr-primary-lt);color:var(--clr-primary)}.result-wrapper{animation:fadeUp .35s ease both}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.room-canvas{width:100%;height:140px;border-radius:var(--radius-md);background:var(--clr-primary-xlt);display:block;margin-bottom:24px}.result-headline{text-align:center;margin-bottom:24px}.result-eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--clr-text-muted);margin-bottom:10px;font-family:var(--font-family-display),system-ui,sans-serif;font-weight:600}.ton-pill-calculated{background:var(--clr-surface-2);border-color:var(--clr-border-def)}.ton-pill-calculated .ton-number,.ton-pill-calculated .ton-unit{color:var(--clr-text)}.recommended-section{margin-bottom:20px}.recommended-title{font-size:13px;font-family:var(--font-family-display),system-ui,sans-serif;font-weight:600;color:var(--clr-primary);margin-bottom:6px}.recommended-intro{font-size:13px;color:var(--clr-text-mid);line-height:1.55;margin-bottom:12px}.ton-pill{display:inline-flex;align-items:baseline;gap:6px;padding:8px 24px;background:var(--clr-primary-xlt);border:1.5px solid var(--clr-primary-lt);border-radius:var(--radius-pill);margin-bottom:8px}.ton-number{font-family:var(--font-family-display),system-ui,sans-serif;font-size:3rem;font-weight:600;line-height:1}.ton-number,.ton-unit{color:var(--clr-primary)}.ton-unit{font-size:1rem;font-weight:500}.btu-sub{font-size:13px;color:var(--clr-text-muted);line-height:1.5;word-break:break-word}.window-area-section{margin-bottom:20px}.mini-unit-toggle{display:grid;grid-template-columns:1fr 1fr;grid-gap:8px;gap:8px;margin-bottom:12px}.mini-unit-toggle 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var(--clr-border-def);border-radius:var(--radius-md);background:var(--clr-surface)}.ac-option.recommended{border-color:var(--clr-primary)}.ac-size{font-size:17px;font-weight:600;font-family:var(--font-family-display),system-ui,sans-serif;color:var(--clr-text)}.ac-desc{font-size:12px;color:var(--clr-text-muted);margin-top:2px}.badge-rec{background:var(--clr-primary-xlt);color:var(--clr-primary);font-weight:600}.badge-alt,.badge-rec{font-size:11px;padding:4px 12px;border-radius:var(--radius-pill);white-space:nowrap}.badge-alt{background:var(--clr-bg);color:var(--clr-text-muted);font-weight:500}.badge-warn{font-size:11px;background:#fef3c7;color:#92400e;padding:4px 12px;border-radius:var(--radius-pill);font-weight:600;white-space:nowrap}.ac-option.undersized{border-color:#fcd34d}.ac-option.oversized{border-color:var(--clr-border-def)}.height-unit-toggle{margin-bottom:10px}.load-breakdown{margin-bottom:20px;padding:14px 16px;background:var(--clr-surface-2);border-radius:var(--radius-md)}.breakdown-grid{display:flex;flex-direction:column;gap:8px}.breakdown-row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:var(--clr-text)}.breakdown-row span:last-child{font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.input-hint{font-size:11px;color:var(--clr-text-muted);margin-top:4px;line-height:1.45}.occupancy-group,.tip-box{margin-bottom:20px}.tip-box{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:var(--clr-surface-2);border-left:3px solid var(--clr-primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.tip-icon{width:18px;height:18px;flex-shrink:0;color:var(--clr-primary);margin-top:1px}.tip-text{font-size:13px;color:var(--clr-text-mid);line-height:1.6}.btn-restart{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:500;font-family:var(--font-family-display),system-ui,sans-serif;color:white;background:var(--clr-primary);transition:all var(--transition)}.btn-restart:hover{background:#085041;transform:translateY(-1px);box-shadow:var(--shadow-hover)}.custom-height-input{margin-top:12px}.custom-height-input .input-group{max-width:200px}.step3-form{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--clr-border-def)}.step3-form .field-label{margin-bottom:10px}.temp-toggle{margin-bottom:14px}.step3-inputs{margin-bottom:8px}.step3-factors-label{margin-bottom:12px}.factor-field{margin-bottom:18px;min-width:0;max-width:100%}.factor-options-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:8px;gap:8px;width:100%}.factor-options-grid .height-btn{white-space:normal;text-align:center;width:100%;line-height:1.3;padding:10px 8px;min-height:44px;font-size:12px}.factor-options-grid .height-btn:last-child:nth-child(odd):not(:only-child){grid-column:1/-1}.factor-options-scroll{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;scroll-snap-type:x proximity;max-width:100%}.factor-options-scroll::-webkit-scrollbar{display:none}.factor-options-scroll .height-btn{flex-shrink:0;scroll-snap-align:start}.equipment-grid{grid-template-columns:1fr 1fr}.tip-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--clr-primary);margin-bottom:4px;font-family:var(--font-family-display),system-ui,sans-serif}.energy-tip{border-left-color:var(--clr-amber)}.disclaimer-box{padding:12px 14px;background:var(--clr-surface-2);border-radius:var(--radius-sm);margin-bottom:20px;font-size:12px;color:var(--clr-text-muted);line-height:1.6;border:1px solid var(--clr-border-def)}.btn-calculate:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.info-section{padding:64px 0;background:var(--clr-surface);border-top:1px solid var(--clr-border-def)}.section-intro{color:var(--clr-text-mid);margin:12px 0 32px;font-size:15px}.how-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:20px;gap:20px}.how-card{padding:20px;background:var(--clr-bg);border-radius:var(--radius-md)}.how-num{font-family:var(--font-family-display),system-ui,sans-serif;font-size:2rem;font-weight:600;color:var(--clr-primary-lt);line-height:1;margin-bottom:12px}.how-card h3{margin-bottom:8px}.how-card p{font-size:14px;color:var(--clr-text-mid)}.table-section{padding:64px 0;border-top:1px solid var(--clr-border-def)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-md);border:1px solid var(--clr-border-def);margin-bottom:12px}table{width:100%;border-collapse:collapse;font-size:14px}thead{background:var(--clr-surface-2)}th{text-align:left;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--clr-text-muted);white-space:nowrap}td,th{padding:12px 16px}td{border-top:1px solid var(--clr-border-def);color:var(--clr-text)}tbody tr:hover td{background:var(--clr-primary-xlt)}.ton-cell{font-weight:600;color:var(--clr-primary);font-family:var(--font-family-display),system-ui,sans-serif}.table-note{font-size:12px;color:var(--clr-text-muted);font-style:italic}.faq-section{padding:64px 0;background:var(--clr-surface);border-top:1px solid var(--clr-border-def)}.faq-list{margin-top:28px;display:flex;flex-direction:column;gap:4px}.faq-item{border:1px solid var(--clr-border-def);border-radius:var(--radius-sm);overflow:hidden}.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;font-size:15px;font-weight:500;color:var(--clr-text);background:var(--clr-surface);text-align:left;transition:background var(--transition);font-family:var(--font-family-display),system-ui,sans-serif}.faq-q:hover{background:var(--clr-bg)}.faq-q[aria-expanded=true]{color:var(--clr-primary);background:var(--clr-primary-xlt)}.faq-arrow{width:18px;height:18px;flex-shrink:0;transition:transform var(--transition);color:var(--clr-text-muted)}.faq-q[aria-expanded=true] .faq-arrow{transform:rotate(180deg);color:var(--clr-primary)}.faq-a{padding:0 20px 16px;border-top:1px solid var(--clr-border-def);background:var(--clr-surface)}.faq-a p{font-size:14px;color:var(--clr-text-mid);line-height:1.7;padding-top:14px}.faq-a strong{color:var(--clr-text)}.site-footer{background:var(--clr-text);padding:32px 0}.footer-text{font-size:13px;color:rgba(255,255,255,.55);line-height:1.6;margin-bottom:6px}.footer-text:last-child{margin-bottom:0}@media (max-width:768px){.calc-section{padding:32px 0 56px}.calc-intro h1{font-size:1.5rem;line-height:1.25}.calc-subtitle{font-size:14px}.step-question{font-size:1.05rem;margin-bottom:16px}.factor-options-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.factor-options-grid .height-btn{font-size:11px;padding:10px 6px;min-height:48px}.height-section>.height-options{flex-wrap:wrap}}@media (max-width:640px){.container{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.calc-section{padding:28px 0 48px}.calc-card{padding:20px 16px 24px;border-radius:var(--radius-md)}.calc-intro{margin-bottom:20px}.calc-intro h1{font-size:1.35rem}.header-nav-link{min-height:48px;font-size:11px;padding:8px 4px}.header-nav-icon{width:16px;height:16px}.logo-name{font-size:1.1rem}.logo-tagline{font-size:11px;line-height:1.35}.logo-mark svg{width:32px;height:32px}.room-grid{grid-template-columns:repeat(3,1fr);gap:8px}.room-tile{padding:12px 6px 10px;min-height:80px;gap:6px}.room-tile:hover{transform:none}.tile-icon{width:22px;height:22px}.tile-label{font-size:11px;line-height:1.25}.unit-toggle:not(.mini-unit-toggle){display:grid;grid-template-columns:1fr 1fr;grid-gap:6px;gap:6px}.unit-toggle{gap:6px;margin-bottom:16px}.unit-btn{min-height:44px;padding:10px;font-size:12px}.mini-unit-toggle .unit-btn{font-size:11px;padding:10px 8px}.height-btn{min-height:44px;padding:8px 12px;font-size:12px}.dim-inputs{grid-template-columns:1fr 1fr;gap:10px}.equipment-grid,.step3-inputs{grid-template-columns:1fr}.input-wrap input{font-size:16px;padding:12px 52px 12px 14px;min-height:48px}.input-unit{font-size:11px;right:10px;max-width:42%;text-align:right;overflow:hidden;text-overflow:ellipsis}.factor-grid{grid-template-columns:1fr;gap:8px}.factor-chip{padding:14px 12px;min-height:48px}.factor-field{margin-bottom:16px}.how-grid{grid-template-columns:1fr}.faq-section,.info-section,.table-section{padding:48px 0}.detail-grid{grid-template-columns:1fr 1fr;gap:8px}.detail-val{font-size:14px;word-break:break-word}.height-options{gap:6px}.height-section>.height-options .height-btn{font-size:11px;padding:8px 10px}.ton-number{font-size:2.5rem}.ton-pill{padding:8px 18px;max-width:100%}.btu-sub,.recommended-intro,.recommended-title{font-size:12px}.step-nav{gap:8px}.step-nav.two-col{flex-direction:column-reverse}.step-nav.two-col .btn-back,.step-nav.two-col .btn-calculate,.step-nav.two-col .btn-next{width:100%;flex:none}.btn-back,.btn-calculate,.btn-next,.btn-restart{min-height:48px;font-size:15px}.ac-option{flex-direction:column;align-items:flex-start;gap:8px;padding:12px 14px}.ac-size{font-size:15px}.ac-desc{font-size:12px;line-height:1.45}.badge-alt,.badge-rec,.badge-warn{align-self:flex-start}.load-breakdown{padding:12px 14px}.breakdown-row{font-size:12px;gap:8px}.breakdown-row span:first-child{flex:1 1;min-width:0}.breakdown-row span:last-child{flex-shrink:0}table{font-size:13px}td,th{padding:10px 12px}.faq-q{padding:14px 16px;font-size:14px;min-height:48px}.faq-a{padding:0 16px 14px}.site-footer{padding:28px 0 max(28px,env(safe-area-inset-bottom))}.result-headline{text-align:center}.room-canvas{max-width:100%;height:auto}}@media (max-width:480px){.calc-card{padding:16px 14px 20px}.calc-intro h1{font-size:1.25rem}.step-question{font-size:1rem}.room-grid{grid-template-columns:repeat(2,1fr)}.unit-toggle:not(.mini-unit-toggle){grid-template-columns:1fr}.height-section>.height-options{display:grid;grid-template-columns:1fr 1fr}.height-section>.height-options .height-btn{white-space:normal;text-align:center;line-height:1.25;min-height:44px}.breakdown-row{flex-direction:column;align-items:flex-start;gap:2px}.breakdown-row span:last-child{font-size:14px}.detail-grid{grid-template-columns:1fr}.detail-card{padding:10px 12px}.ton-number{font-size:2.2rem}}@media (max-width:400px){.logo-tagline{font-size:10px}.logo{gap:10px}.header-nav-track{padding:4px}.header-nav-list{gap:4px}.mini-unit-toggle{grid-template-columns:1fr}}@media (max-width:360px){.dim-inputs,.height-section>.height-options{grid-template-columns:1fr}}@media (hover:none){.btn-calculate:hover,.btn-next:hover:not(:disabled),.btn-restart:hover,.room-tile:hover{transform:none}.header-nav-link:active:not(.is-active){background:rgba(255,255,255,.85);color:var(--clr-primary)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}