.vertical-model{margin:0 0 20px;background:#fff;border:1px solid #d2d9dc;border-radius:8px;overflow:hidden}.vertical-model .model-caption,.vertical-model figcaption{padding:14px 16px}.vertical-model figcaption{font-size:12px;line-height:1.5;color:#526470;border-top:1px solid #e5e9ec}.vertical-reference{max-height:520px;display:flex;justify-content:center;padding:12px;background:white}.vertical-reference svg{display:block;width:100%;height:auto;max-height:490px}.vertical-model-labels{margin:0;padding:0 16px 14px;font-size:12px;line-height:1.5}.vertical-model-labels>div{display:flex;gap:12px;padding:6px 0;border-top:1px solid #e5e9ec}.vertical-model-labels dt{flex:0 0 100px;color:#566875}.vertical-model-labels dd{margin:0;font-weight:700}.vertical-controls select{max-width:100%;width:100%;padding:12px;border:1px solid #b7c3ca;border-radius:4px;font:inherit;background:#fff}.vertical-controls .group{margin-bottom:20px}.vertical-controls .group legend{font-weight:700}.vertical-controls .motor-match{margin:12px 0;padding:14px;background:#eef4f7;border-radius:5px}.vertical-controls .motor-match strong{display:block}.vertical-controls .motor-match small{display:block;line-height:1.7}.vertical-controls .field-label{display:block;margin:12px 0 8px;font-weight:600}.vertical-invitation{margin-top:20px}.vertical-building .layout{align-items:start}@media(max-width:760px){.vertical-reference{max-height:440px}.vertical-reference svg{max-height:420px}.vertical-model-labels{font-size:12px}.vertical-model-labels dt{flex-basis:105px}}
/* Model Views Rev B: shared drawing presentation for both builders. */
.building main{max-width:1560px!important}
.building .layout{display:grid;grid-template-columns:minmax(350px,.84fr) minmax(0,1.16fr);gap:28px;align-items:start}
.building #summary{position:static;min-width:0}
.building #workspace{min-width:0}
.skid-model,.vertical-model,.bc-pump-photo{padding:14px;margin:0 0 18px;background:#fff;border:1px solid #cdd8e1;box-shadow:0 10px 32px #162e4414,inset 0 3px #234c6e;border-radius:9px;overflow:hidden}
.model-caption,.vertical-model .model-caption{padding:8px 8px 12px;display:flex;flex-wrap:wrap;gap:5px 14px;align-items:baseline;border-bottom:1px solid #dce5ed;margin-bottom:12px}
.model-caption strong{font-size:19px;font-weight:750;overflow-wrap:anywhere;color:#153853}
.model-caption .eyebrow{margin:0;color:#4e6d86;font-size:11px}
.skid-model svg,.skid-model svg.bc-skid-view,.vertical-reference svg{width:100%;height:auto;max-width:none;max-height:none!important;display:block}
.vertical-reference{display:block;padding:0;max-height:none;background:#fff}
.bc-pump-photo img{display:block;width:100%;height:clamp(320px,34vw,510px);max-height:none;object-fit:contain;padding:14px 6px;background:#fff;mix-blend-mode:multiply;animation:bc-photo-in .4s ease-out both}
.skid-model figcaption,.vertical-model figcaption,.bc-pump-photo figcaption{margin:12px 0 0;padding:10px 8px 2px;border-top:1px solid #e1e7ed;font-size:12px;line-height:1.5;color:#52677b}
.bc-view-key{display:none;margin:4px 0 0;padding:0;list-style:none;counter-reset:bc-label}
.bc-view-key li{counter-increment:bc-label;display:grid;grid-template-columns:28px 1fr;gap:0 9px;border-top:1px solid #e1e7ed;padding:9px 4px;color:#183d5a;font-size:13px;line-height:1.45;min-width:0}
.bc-view-key li:before{content:counter(bc-label);grid-row:1/3;align-self:center;display:grid;place-items:center;width:25px;height:25px;border:1px solid #527795;border-radius:50%;font-weight:700;font-size:13px;background:#fff}
.bc-view-key li b,.bc-view-key li span{grid-column:2;overflow-wrap:anywhere}
.bc-view-key li span{font-size:12px;color:#52677b}
.bc-view-extras{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px;padding:0 8px;margin:10px 0 0;font-size:12px;line-height:1.5}
.bc-view-extras>div{border-top:1px solid #e1e7ed;padding:8px 0;min-width:0}
.bc-view-extras dt{font-weight:700;color:#214866;overflow-wrap:anywhere}
.bc-view-extras dd{margin:0;color:#52677b;overflow-wrap:anywhere}
.building .summary-panel .model{overflow-wrap:anywhere}
@keyframes bc-photo-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(max-width:1000px){.building .layout{grid-template-columns:minmax(300px,.9fr) minmax(0,1.1fr);gap:18px}.building .choice-grid{grid-template-columns:1fr}}
@media(max-width:820px){.building .layout{display:flex;flex-direction:column;gap:20px}.building #summary{order:-1;width:100%}.building #workspace{width:100%}.building .summary-panel{display:block}.bc-pump-photo img{height:350px}}
@media(max-width:600px){.skid-model,.vertical-model,.bc-pump-photo{padding:9px}.bc-view-key{display:block}.bc-view-extras{grid-template-columns:1fr}.bc-pump-photo img{height:280px}.model-caption strong{font-size:16px}.bc-proof-svg .label-text{display:none}.bc-proof-svg .mobile-marker{display:block}.vertical-reference svg{max-height:none!important}}
@media(prefers-reduced-motion:reduce){.bc-pump-photo img{animation:none}}
@media print{.skid-model,.vertical-model,.bc-pump-photo{box-shadow:none}}

/* Rev D: one primary path, compact supporting controls. */
.build-tools{margin:18px 0;border-top:1px solid #dbe3e9;padding-top:14px}
.build-tools>summary,.assembly-items>summary{cursor:pointer;font-weight:600;color:#264f70;padding:10px 0}
.assembly-items{border-top:1px solid #dbe3e9;margin-top:16px;padding-top:8px}
#builder-toolbar{justify-content:flex-end;background:transparent;border:0;padding:0;margin:0 0 12px}
#builder-toolbar button{min-height:36px;padding:5px 10px;font-size:13px;background:transparent}
.summary-panel:empty{display:none}