.fb{max-width:1240px;margin:auto;padding-bottom:48px}.fb header{padding:28px 0 12px}.fb h1{font-size:clamp(1.65rem,4vw,2.75rem);line-height:1.12}.fb h2{font-size:1.55rem;margin:0 0 18px}.fb section{margin:30px 0;padding-top:12px}.fb p{max-width:90ch;line-height:1.65}.fb-links,.fb-actions{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.fb-links a{padding:8px 12px;background:#edf3f6;border-radius:6px}.fb-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:14px;align-items:end}.fb label{display:flex;flex-direction:column;gap:6px;font-weight:600}.fb select,.fb input,.fb textarea{width:100%;min-height:46px;padding:10px;border:1px solid #a9bac6;border-radius:6px;background:#fff;color:#182d40;font:inherit}.fb details{border:1px solid #ccd8e0;padding:14px;margin:14px 0;border-radius:8px}.fb summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:650}.fb button{min-height:44px;padding:10px 16px;border:1px solid #9fb5c5;background:#f0f5f8;color:#173851;border-radius:6px;font:inherit;cursor:pointer}.fb button:hover{background:#dceaf2}.fb button:disabled{opacity:.45;cursor:not-allowed}.fb :focus-visible{outline:3px solid #dc7428;outline-offset:3px}.fb-main-drawing{border:1px solid #cbd7df;border-radius:12px;background:#f9fbfc;padding:12px}.fb svg,.fb-print svg{display:block;width:100%;max-height:480px;overflow:visible;font-family:Arial,sans-serif}.fb svg text,.fb-print svg text{fill:#27475e;stroke:none;text-anchor:middle;font-size:16px}.fb svg line,.fb svg circle,.fb svg polygon,.fb svg path,.fb-print svg line,.fb-print svg circle,.fb-print svg polygon,.fb-print svg path{stroke:#284b63;stroke-width:1.5;vector-effect:non-scaling-stroke;fill:none}.fb .metal,.fb-print .metal{fill:#e0e9ee}.fb .head,.fb-print .head{fill:#cbdbe5}.fb .fb-axis,.fb-print .fb-axis{stroke:#8298a6;stroke-dasharray:9 4 2 4}.fb .fb-faint,.fb-print .fb-faint{stroke:#8298a6;stroke-width:1}.fb .fb-thread,.fb-print .fb-thread{stroke:#69899e;stroke-width:1}.fb .fb-support,.fb-print .fb-support{stroke-dasharray:4 3}.fb .fb-tooth,.fb-print .fb-tooth{stroke:#425d70;stroke-width:1.2}.fb .fb-groove,.fb-print .fb-groove{stroke:#b46028;stroke-width:2}.fb .fb-dim,.fb-print .fb-dim{stroke:#407ba3;stroke-width:1}.fb .fb-bracket,.fb-print .fb-bracket{fill:#d9e7e6;stroke:#618884}.fb .fb-housing,.fb-print .fb-housing{fill:#e6e0d7;stroke:#a59178}.fb .fb-contact{stroke:#d17126;stroke-width:5}.fb .fb-part{cursor:pointer;transition:opacity .18s,stroke .18s,fill .18s}.fb .fb-active,.fb .fb-active>*{stroke:#dc7428;stroke-width:3}.fb tr.fb-active{background:#fff0dd;color:#263b4c}.fb-config{font-size:1.15rem;font-weight:650}.fb-muted{color:#546a79;font-size:.92rem}.fb-views{display:grid;grid-template-columns:1fr 1fr;gap:16px}.fb figure{margin:0;min-width:0}.fb-scroll{max-width:100%;overflow:auto;border:1px solid #ccd8e0;border-radius:8px}.fb table,.fb-sheet table{border-collapse:collapse;width:100%;font-size:.92rem}.fb th,.fb td,.fb-sheet th,.fb-sheet td{padding:10px 12px;border-bottom:1px solid #dce4e9;text-align:left;vertical-align:top}.fb th{font-weight:600}.fb thead th{position:sticky;top:0;background:#e8f0f5;z-index:1;white-space:nowrap}.fb caption{padding:14px;text-align:left;font-weight:650}.fb small,.fb-sheet small{display:block;max-width:46ch;font-weight:400;color:#526779;margin-top:4px}.fb-matrix{max-height:510px}.fb-matrix td{padding:3px}.fb-matrix button{width:100%;white-space:nowrap}.fb-selected{background:#eaf4f9}.fb [data-fb-warning]:not(:empty){padding:12px;background:#fff3df;border-left:4px solid #d68d2c;margin:12px 0}.fb-print{display:none}.fb [data-fb-request]{max-width:100%}.fb [data-fb-order-summary]{padding:14px;background:#f0f5f8}.fb a{overflow-wrap:anywhere}.fb [hidden]{display:none!important}@media(max-width:600px){.fb-controls{grid-template-columns:1fr 1fr}.fb-controls label:first-child{grid-column:1/-1}.fb-views{grid-template-columns:1fr 1fr;gap:0}.fb h2{font-size:1.3rem}.fb-main-drawing{padding:0}.fb svg{min-height:185px}.fb-actions button{flex:1 1 140px}.fb th,.fb td{padding:8px}.fb{min-width:0}.fb table{min-width:650px}.fb .fb-matrix table{min-width:800px}}@media(max-width:340px){.fb-controls{grid-template-columns:1fr}.fb-views{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.fb *{transition:none!important;animation:none!important;scroll-behavior:auto!important}}@media print{@page{size:A4;margin:12mm}body>*{display:none!important}body>main{display:block!important}main>*{display:none!important}main>.fb-print{display:block!important}.fb-print{font:10pt Arial,sans-serif;color:#172c3e}.fb-sheet h1{font-size:19pt}.fb-sheet h2{font-size:14pt}.fb-sheet svg{max-height:75mm}.fb-sheet .fb-views{display:grid;grid-template-columns:1fr 1fr}.fb-sheet .fb-views svg{max-height:45mm}.fb-sheet .fb-scroll{overflow:visible;border:0}.fb-sheet table{font-size:8pt}.fb-sheet th,.fb-sheet td{padding:4px;border:1px solid #bccbd4}.fb-sheet thead{display:table-header-group}.fb-sheet tr{break-inside:avoid}.fb-sheet p{line-height:1.4}.fb-sheet{display:block}.skip,.skip-link{display:none!important}}

/* Compact selection alongside the drawing; scroll stays inside the drawing. */
.fb header{padding:18px 0 0}.fb header h1{margin:12px 0}.fb header p{margin:8px 0}.fb header .fb-links{margin:12px 0}.fb #fb-select{margin-top:20px;display:grid;grid-template-columns:310px minmax(0,1fr);gap:14px 24px;align-items:start}.fb #fb-select>h2{grid-column:1/-1;margin:0}.fb #fb-select>form{grid-column:1;grid-row:2}.fb #fb-select>.fb-actions{grid-column:1;grid-row:4;margin:0}.fb #fb-select>[data-fb-status]{grid-column:1;grid-row:3;margin:0}.fb [data-fb-select]>.fb-controls{grid-template-columns:1fr 1fr}.fb [data-fb-select]>.fb-controls label:first-child,.fb [data-fb-select]>.fb-controls label:last-child{grid-column:1/-1}.fb [data-fb-main]{grid-column:2;grid-row:2/6;min-width:0}.fb [data-fb-main]>.fb-config{margin:0 0 8px}.fb .fb-main-drawing{overflow:auto}.fb [data-fb-main]>.fb-views svg{max-height:230px}.fb [data-fb-main]>.fb-muted{margin:8px 0}.fb .fb-extra .fb-controls{grid-template-columns:1fr}.fb .fb-extra{padding:10px;margin:10px 0}.fb .fb-extra summary{font-size:.95rem}.fb .fb-main-drawing svg{min-width:580px}.fb [data-fb-main] .fb-views{background:#fafcfd;border-radius:8px}.fb #fb-select .fb-actions{flex-direction:column}
@media(max-width:850px){.fb #fb-select{display:block}.fb #fb-select>h2{margin-bottom:14px}.fb [data-fb-select]>.fb-controls{grid-template-columns:1fr 1fr}.fb [data-fb-main]{margin-top:16px}.fb .fb-main-drawing svg{min-width:640px}.fb #fb-select .fb-actions{flex-direction:row}.fb .fb-views svg{min-height:0}.fb .fb-config{font-size:1rem}.fb section{margin-top:24px}}

.fb-scroll-hint{display:none}.fb-field-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:20px;align-items:start}.fb-peek{position:sticky;top:20px;border:1px solid #d2dee5;border-radius:8px;padding:12px;background:#f8fbfc}.fb-peek p{font-size:.95rem}.fb-peek svg{max-height:260px}.fb-field-layout>.fb-scroll{min-width:0}
@media(max-width:850px){.fb-scroll-hint{display:block;font-size:.85rem;color:#536b7b}.fb-field-layout{display:block}.fb-peek{position:static;margin-top:12px}.fb-peek svg{min-height:0;max-height:220px}}