:root{
  color-scheme:light dark; --bg:#eef1f4; --panel:#fff; --panel-2:#f6f8fa; --text:#15202b; --muted:#61707d;
  --line:#d8dee4; --accent:#175f8f; --accent-2:#0e4f79; --danger:#a92b2b; --warn:#8a6300; --ok:#206a3b;
  --shadow:0 1px 3px rgba(0,0,0,.08); --radius:10px; --mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media(prefers-color-scheme:dark){:root{--bg:#0d1319;--panel:#151d24;--panel-2:#1b252e;--text:#eef3f6;--muted:#9fb0bd;--line:#34424e;--accent:#65b8ec;--accent-2:#86c9f1;--danger:#ff8b8b;--warn:#ffd36a;--ok:#85d8a2;--shadow:none}}
html[data-theme="light"]{color-scheme:light;--bg:#eef1f4;--panel:#fff;--panel-2:#f6f8fa;--text:#15202b;--muted:#61707d;--line:#d8dee4;--accent:#175f8f;--accent-2:#0e4f79;--danger:#a92b2b;--warn:#8a6300;--ok:#206a3b}
html[data-theme="dark"]{color-scheme:dark;--bg:#0d1319;--panel:#151d24;--panel-2:#1b252e;--text:#eef3f6;--muted:#9fb0bd;--line:#34424e;--accent:#65b8ec;--accent-2:#86c9f1;--danger:#ff8b8b;--warn:#ffd36a;--ok:#85d8a2}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:15px;line-height:1.35;padding-bottom:calc(62px + env(safe-area-inset-bottom))}
button,input,select{font:inherit;color:inherit}button{cursor:pointer}.app-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(12px);padding:calc(10px + env(safe-area-inset-top)) 12px 9px;border-bottom:1px solid var(--line)}
.title-row{display:flex;align-items:center;justify-content:space-between;gap:10px;max-width:1000px;margin:auto}.title-row h1{font-size:19px;line-height:1.1;margin:0;font-weight:700;letter-spacing:.1px}.subtitle{font-size:11px;color:var(--muted);margin-top:2px}.status-pill{font-size:11px;border:1px solid var(--line);border-radius:999px;padding:4px 7px;color:var(--muted);white-space:nowrap}.status-pill.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 45%,var(--line))}.status-pill.error{color:var(--danger)}
.quick-search{max-width:1000px;margin:9px auto 0}.quick-search label{font-size:12px;font-weight:650;color:var(--muted);display:block;margin-bottom:4px}.search-row{display:grid;grid-template-columns:1fr auto;gap:6px}.search-row input,.control select,.control input{width:100%;border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:9px 10px;min-height:40px;outline:none}.search-row input{font-family:var(--mono);font-size:16px}.search-row input:focus,.control select:focus,.control input:focus{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 20%,transparent)}button.primary{background:var(--accent-2);border:1px solid var(--accent-2);color:white;border-radius:8px;padding:8px 15px;font-weight:700}.quick-help{font-family:var(--mono);color:var(--muted);font-size:10.5px;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#view{max-width:1000px;margin:0 auto;padding:10px 10px 22px}.loading-card,.empty-card,.error-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.error-card{border-color:color-mix(in srgb,var(--danger) 45%,var(--line));color:var(--danger)}
.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(57px + env(safe-area-inset-bottom));padding:0 5px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:color-mix(in srgb,var(--panel) 96%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--line)}.bottom-nav button{position:relative;border:0;background:transparent;color:var(--muted);font-size:11.5px;font-weight:650;padding:5px 2px}.bottom-nav button.active{color:var(--accent)}.bottom-nav button.active:before{content:"";position:absolute;top:0;left:25%;right:25%;height:2px;background:var(--accent)}.count-badge{display:inline-grid;place-items:center;min-width:16px;height:16px;margin-left:3px;padding:0 4px;border-radius:10px;background:var(--accent);color:white;font-size:10px}
.section-title{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin:3px 2px 8px}.section-title h2{font-size:17px;margin:0}.section-title .meta{font-size:11px;color:var(--muted)}
.filters{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:9px;box-shadow:var(--shadow);margin-bottom:9px}.filters.flange{grid-template-columns:repeat(5,minmax(0,1fr))}.control label{display:block;font-size:10.5px;color:var(--muted);font-weight:700;margin:0 0 3px 2px;text-transform:uppercase;letter-spacing:.35px}.control select{padding:7px 8px;min-height:38px;font-size:13px;background:var(--panel-2)}
.result-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.result-head{padding:10px 11px 8px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:8px;align-items:flex-start}.result-title{font-size:14px;font-weight:750;line-height:1.25}.result-sub{font-size:11px;color:var(--muted);margin-top:3px}.actions{display:flex;gap:5px;flex-wrap:wrap;justify-content:flex-end}.small-btn,.icon-btn{border:1px solid var(--line);background:var(--panel-2);border-radius:7px;padding:6px 8px;font-size:11px;font-weight:650}.small-btn:hover,.small-btn:focus{border-color:var(--accent)}.small-btn.active{color:var(--accent);border-color:var(--accent)}
.result-body{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(270px,.9fr)}.fields{border-right:1px solid var(--line)}.field-row{display:grid;grid-template-columns:minmax(145px,1.1fr) minmax(125px,.9fr);align-items:start;gap:8px;padding:6px 10px;border-bottom:1px solid color-mix(in srgb,var(--line) 72%,transparent);min-height:35px}.field-row:last-child{border-bottom:0}.field-name{font-size:12.5px;color:var(--muted)}.field-value{font-family:var(--mono);font-size:13px;font-weight:700;text-align:right;word-break:break-word;font-variant-numeric:tabular-nums}.field-basis{grid-column:1/-1;font-size:9.5px;color:var(--muted);margin-top:-4px;display:none}.field-row.expanded .field-basis{display:block}.field-row.copyable{cursor:pointer}.field-row.copyable:active{background:var(--panel-2)}.field-row.highlight{background:color-mix(in srgb,var(--accent) 12%,var(--panel))}
.diagram-wrap{padding:8px;min-height:270px;display:flex;align-items:center;justify-content:center;overflow:auto;touch-action:pinch-zoom}.engineering-diagram{width:100%;min-width:300px;max-height:360px;color:var(--text)}.engineering-diagram .shape{fill:color-mix(in srgb,var(--muted) 16%,transparent);stroke:currentColor;stroke-width:1.6}.engineering-diagram .void{fill:var(--panel);stroke:currentColor;stroke-width:1.2}.engineering-diagram .bolt-hole{fill:var(--panel);stroke:currentColor;stroke-width:.9}.engineering-diagram .face-ring{fill:none;stroke:var(--accent);stroke-width:2}.engineering-diagram .rtj-ring{fill:none;stroke:var(--accent);stroke-width:2.8;stroke-dasharray:5 3}.engineering-diagram .face-detail{fill:color-mix(in srgb,var(--accent) 30%,transparent);stroke:var(--accent)}.engineering-diagram .groove-detail{fill:var(--panel);stroke:var(--accent);stroke-width:2}.engineering-diagram .dimension,.engineering-diagram .tick{stroke:var(--muted);stroke-width:1}.engineering-diagram text{fill:var(--text);font-size:12px;font-family:var(--mono)}.engineering-diagram .dim-name{fill:var(--muted);font-size:10px}.engineering-diagram .dim-value{font-weight:700}.engineering-diagram .diagram-note,.engineering-diagram .view-label{fill:var(--muted);font-size:9.5px}.engineering-diagram [data-key]{cursor:pointer}.engineering-diagram [data-key].highlight{stroke:var(--accent)!important;stroke-width:3!important}.engineering-diagram g.highlight text{fill:var(--accent)!important}
.source-box{border-top:1px solid var(--line);padding:8px 10px;background:var(--panel-2);font-size:10.5px;color:var(--muted)}.source-box strong{color:var(--text)}.source-actions{margin-top:6px;display:flex;gap:6px;flex-wrap:wrap}.notes-toggle{border:0;background:transparent;color:var(--accent);padding:0;font-size:10.5px}.notes-text{margin-top:6px;white-space:pre-wrap;word-break:break-word;color:var(--muted)}
.chips{display:flex;gap:5px;overflow:auto;padding:0 1px 8px;scrollbar-width:none}.chip{white-space:nowrap;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:5px 8px;font-family:var(--mono);font-size:10.5px;color:var(--muted)}.chip:hover{border-color:var(--accent);color:var(--accent)}
.quick-matches{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:9px;margin-bottom:9px}.quick-matches h3{margin:0 0 6px;font-size:13px}.match-list{display:grid;gap:5px}.match-btn{display:flex;justify-content:space-between;gap:10px;text-align:left;border:1px solid var(--line);background:var(--panel-2);padding:7px 8px;border-radius:7px}.match-btn strong{font-family:var(--mono);font-size:11.5px}.match-btn span{font-size:10.5px;color:var(--muted)}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.compare-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.compare-card h3{font-size:12px;margin:0;padding:8px;border-bottom:1px solid var(--line)}.compare-row{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:5px 8px;border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent);font-size:10.5px}.compare-row .v{font-family:var(--mono);text-align:right;font-weight:650}.compare-row.diff{background:color-mix(in srgb,var(--warn) 11%,var(--panel))}.compare-actions{padding:7px}.pin-empty{padding:25px;text-align:center;color:var(--muted)}
.reference-list,.settings-list{display:grid;gap:8px}.reference-card,.setting-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:10px}.reference-card h3,.setting-card h3{font-size:13px;margin:0 0 4px}.reference-card p,.setting-card p{font-size:11px;color:var(--muted);margin:3px 0}.reference-card a{display:inline-block;margin-top:5px;color:var(--accent);font-weight:700;text-decoration:none}.segmented{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;width:max-content;max-width:100%}.segmented button{border:0;border-right:1px solid var(--line);background:var(--panel-2);padding:7px 10px;font-size:11px}.segmented button:last-child{border-right:0}.segmented button.active{background:var(--accent-2);color:white}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:5px;margin-top:7px}.stat{background:var(--panel-2);padding:7px;border-radius:6px}.stat strong{display:block;font-family:var(--mono);font-size:14px}.stat span{font-size:9.5px;color:var(--muted)}
.disclaimer{margin:8px 2px 0;color:var(--muted);font-size:9.5px}.toast{position:fixed;left:50%;bottom:calc(68px + env(safe-area-inset-bottom));z-index:100;transform:translate(-50%,12px);opacity:0;pointer-events:none;background:#101820;color:white;border-radius:8px;padding:8px 11px;font-size:11px;transition:.18s;max-width:90vw;box-shadow:0 4px 18px rgba(0,0,0,.25)}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:760px){.filters.flange{grid-template-columns:repeat(2,minmax(0,1fr))}.filters.flange .control:first-child{grid-column:1/-1}.result-body{display:block}.fields{border-right:0;border-bottom:1px solid var(--line)}.diagram-wrap{min-height:220px}.result-head{display:block}.actions{justify-content:flex-start;margin-top:7px}.field-row{grid-template-columns:minmax(130px,1fr) minmax(120px,1fr)}.compare-grid{grid-template-columns:1fr}.quick-help{font-size:9.5px}}
@media(max-width:430px){body{font-size:14px}.app-header{padding-left:9px;padding-right:9px}#view{padding-left:7px;padding-right:7px}.filters{grid-template-columns:1fr 1fr}.filters .control:first-child{grid-column:1/-1}.field-row{padding:5px 8px}.field-name{font-size:11.5px}.field-value{font-size:12px}.title-row h1{font-size:18px}.subtitle{display:none}.status-pill{font-size:9.5px}.bottom-nav button{font-size:10.5px}}
@media(orientation:landscape) and (max-height:520px){.app-header{position:relative}.bottom-nav{height:48px}.diagram-wrap{min-height:200px}.result-body{grid-template-columns:1fr 1fr}}