@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/fef07dbb0973bf53-s.3p2_lha1f2xer.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.1qq4vpdcun5oj.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/53b9e256198e5412-s.390ncx5urfkfu.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.21jp631_3pja2.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.0wgildi0cnwt9.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_d633ac5f-module__BboVrW__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_d633ac5f-module__BboVrW__variable{--font-sans:"Geist", "Geist Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5ce348bf30bf5439-s.31988l_ccedte.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.2tuy5pz7dlieh.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6306c77e7c8268e4-s.2dbetqa9o8jxf.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7d817b4c03b0c5f1-s.1uyisp29ctx0d.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.1rgnod-3esatf.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.0r6juujl39pe6.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}.geist_mono_768fb615-module__nw7kYW__className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}.geist_mono_768fb615-module__nw7kYW__variable{--font-mono:"Geist Mono", "Geist Mono Fallback"}
:root{--ink:#10242b;--muted:#5c6d72;--line:#d7e0e1;--paper:#f5f7f6;--white:#fff;--accent:#00a884;--accent-dark:#007b63;--technical:#dff5ef}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:var(--font-sans),sans-serif}body{margin:0}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}.site-header{background:var(--white);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:76px;padding:0 max(24px,50vw - 590px);display:flex}.brand{letter-spacing:-.04em;font-size:20px;font-weight:750}.brand span{font:500 9px var(--font-mono);letter-spacing:.13em;text-transform:uppercase;color:var(--accent-dark);display:block}.site-header nav{gap:28px;font-size:14px;font-weight:600;display:flex}.page-wrap{width:min(1180px,100% - 40px);margin:auto}.breadcrumbs{color:var(--muted);padding:22px 0;font-size:12px}.breadcrumbs ol{gap:8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li+li:before{content:"/";color:#9eaaad;margin-right:8px}.hero{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;padding:34px 0 42px;display:flex}.eyebrow{font:600 11px var(--font-mono);text-transform:uppercase;letter-spacing:.12em;color:var(--accent-dark)}h1{letter-spacing:-.055em;max-width:850px;margin:13px 0 18px;font-size:clamp(36px,5vw,62px);line-height:1.02}.hero p{color:var(--muted);max-width:680px;margin:0;font-size:18px;line-height:1.55}.hero-badge{border:1px solid var(--line);background:var(--white);flex-direction:column;justify-content:center;align-items:center;width:92px;height:92px;display:flex}.hero-badge strong{font:700 12px var(--font-mono);color:var(--accent-dark)}.hero-badge span{font-size:30px;font-weight:700}.calculator-shell{background:var(--white);border:1px solid var(--line);grid-template-columns:1fr 1fr;margin:34px 0 20px;display:grid;box-shadow:0 18px 50px #10242b12}.input-panel,.result-panel{padding:34px 38px}.input-panel{border-right:1px solid var(--line)}.panel-heading{align-items:center;gap:12px;margin-bottom:28px;display:flex}.panel-heading h2{margin:0;font-size:21px}.step{font:600 10px var(--font-mono);color:var(--accent-dark);border:1px solid var(--accent);padding:5px}label{margin:18px 0 8px;font-size:13px;font-weight:650;display:block}.input-row{grid-template-columns:1fr 110px;display:grid}.field-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}input,select{width:100%;height:48px;color:var(--ink);font:500 16px var(--font-mono);background:#fff;border:1px solid #b8c5c7;border-radius:0;padding:0 13px}input:focus,select:focus,button:focus-visible,a:focus-visible{outline-offset:2px;outline:3px solid #00a8844d}.input-row input{border-right:0}button{background:var(--ink);color:#fff;cursor:pointer;border:0;justify-content:space-between;align-items:center;width:100%;height:50px;margin-top:28px;padding:0 20px;font-weight:700;display:flex}button:hover{background:var(--accent-dark)}button:disabled{opacity:.6}.result-panel{background:linear-gradient(145deg,#f8fbfa,#edf5f2)}.result-empty{text-align:center;min-height:235px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;display:flex}.result-empty p{max-width:390px;line-height:1.5}.tolerance-mark{font:700 35px var(--font-mono);color:var(--ink);border-bottom:2px solid var(--accent);margin-bottom:20px;padding:0 11px 5px;position:relative}.tolerance-mark span{color:var(--accent-dark);margin-left:8px;font-size:18px}.metadata-box{border:1px solid var(--line);background:var(--white);grid-template-columns:1fr 2fr;gap:30px;padding:24px 30px;display:grid}.metadata-box h2{margin:8px 0;font-size:16px}.metadata-box dl{grid-template-columns:repeat(3,1fr);margin:0;display:grid}.metadata-box dt{font:500 10px var(--font-mono);text-transform:uppercase;color:var(--muted)}.metadata-box dd{margin:7px 0;font-size:12px}.status{color:#956400}.content-grid{grid-template-columns:repeat(3,1fr);gap:40px;padding:62px 0 80px;display:grid}.content-grid article{border-top:2px solid var(--ink)}.content-grid h2{margin-top:20px;font-size:20px}.content-grid p{color:var(--muted);line-height:1.65}footer{background:var(--ink);color:#fff;justify-content:space-between;align-items:end;padding:40px max(24px,50vw - 590px);font-size:13px;display:flex}footer p{color:#b8c5c7;max-width:650px}.site-footer-copy{max-width:720px}.site-disclaimer{margin:12px 0 0;font-size:12px;line-height:1.5}.site-disclaimer strong{color:#fff}.standalone{padding:10vw}@media (max-width:760px){.site-header{padding:0 20px}.site-header nav a:first-child{display:none}.page-wrap{width:min(100% - 28px,1180px)}.hero{align-items:start}.hero-badge{display:none}.calculator-shell{grid-template-columns:1fr}.input-panel,.result-panel{padding:25px 20px}.input-panel{border-right:0;border-bottom:1px solid var(--line)}.field-grid,.metadata-box{grid-template-columns:1fr}.metadata-box dl{grid-template-columns:1fr;gap:12px}.content-grid{grid-template-columns:1fr;gap:28px;padding-top:42px}footer{flex-direction:column;align-items:start;gap:20px}.site-header{gap:14px;padding-left:14px;padding-right:14px}.site-header nav{white-space:nowrap;scrollbar-width:none;flex:1;justify-content:flex-end;gap:16px;overflow-x:auto}.site-header nav::-webkit-scrollbar{display:none}.site-header nav a{flex:none}}.legal-page{width:min(860px,100% - 40px);margin:0 auto;padding:64px 0 90px}.legal-page h1{margin-bottom:38px;font-size:clamp(38px,6vw,64px)}.legal-page section{border-top:1px solid var(--line);padding:25px 0}.legal-page h2{margin:0 0 12px;font-size:20px}.legal-page p,.legal-page address{color:var(--muted);font-style:normal;line-height:1.7}.legal-page code{color:var(--ink);background:var(--technical);padding:2px 5px}.legal-launch-warning{background:#fff8e8;border:2px solid #b97900;margin:0 0 32px;padding:18px 22px}.legal-launch-warning p{color:var(--ink);margin:7px 0 0}.legal-updated{font:500 11px var(--font-mono);text-transform:uppercase;letter-spacing:.08em}.consent-panel{z-index:1000;background:var(--white);border:1px solid var(--ink);grid-template-columns:1fr 300px;align-items:end;gap:28px;max-width:980px;margin:auto;padding:22px 25px;display:grid;position:fixed;bottom:20px;left:20px;right:20px;box-shadow:0 20px 70px #10242b40}.consent-panel strong{font-size:17px}.consent-panel p{color:var(--muted);margin:8px 0;line-height:1.55}.consent-panel a{font-size:12px;text-decoration:underline}.consent-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.consent-actions button{margin:0}.consent-actions .secondary-button{color:var(--ink);border:1px solid var(--ink);background:#fff}.consent-settings{z-index:50;background:var(--white);width:auto;height:34px;color:var(--ink);border:1px solid var(--line);margin:0;padding:0 12px;font-size:11px;position:fixed;bottom:12px;right:12px}.consent-settings:hover{color:#fff}@media (max-width:760px){.consent-panel{grid-template-columns:1fr;gap:16px;padding:18px;bottom:10px;left:10px;right:10px}.consent-actions{grid-template-columns:1fr}.consent-settings{width:auto;margin:10px 14px;position:static}}sub,sup{vertical-align:baseline;font-size:.82em;line-height:0;position:relative}sub{bottom:-.22em}sup{top:-.42em}.hero-badge{width:150px;min-width:150px}.hero-badge span{white-space:nowrap;font-size:clamp(18px,2.2vw,30px)}
.scope-note{color:var(--muted);font:500 10px var(--font-mono);text-align:center;margin:12px 0 0}.quick-entry{border-color:var(--accent-dark);font-size:19px;font-weight:650}.field-help{min-height:18px;color:var(--muted);margin:6px 0 14px;font-size:11px;line-height:1.45}.field-help.has-status{color:var(--accent-dark);font-weight:650}.tolerance-pair{grid-template-columns:1fr 1fr;display:grid}.tolerance-pair select:first-child{border-right:0}.warning-box{color:#7c2c21;background:#fff2ef;border-left:4px solid #c44d3d;padding:16px;line-height:1.5}.loading-mark{border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;width:34px;height:34px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.fit-status{border-left:4px solid var(--accent);background:#fff;justify-content:space-between;align-items:center;margin-bottom:16px;padding:14px 16px;display:flex}.fit-status span{font-weight:750}.fit-status strong{font:700 18px var(--font-mono)}.fit-status.fit-transition{border-color:#d69220}.fit-status.fit-interference{border-color:#d65445}.primary-results{grid-template-columns:1fr 1fr;gap:12px;display:grid}.primary-results div{border:1px solid var(--line);background:#fff;padding:17px}.primary-results span{color:var(--muted);margin-bottom:8px;font-size:11px;display:block}.primary-results strong{font:700 23px var(--font-mono);letter-spacing:-.04em}.result-panel details{border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.result-panel summary{cursor:pointer;font-size:12px;font-weight:700}.limit-grid{grid-template-columns:1fr 1fr;gap:8px 20px;margin-top:16px;display:grid}.limit-grid h3{color:var(--accent-dark);grid-column:1/-1;margin:12px 0 2px;font-size:12px}.limit-grid span{color:var(--muted);justify-content:space-between;gap:12px;font-size:11px;display:flex}.limit-grid b{color:var(--ink);font:600 11px var(--font-mono);white-space:nowrap}.fit-visualization{border:1px solid var(--line);background:#fff;margin:0 0 20px;padding:30px 34px}.visual-heading{justify-content:space-between;align-items:flex-end;display:flex}.visual-heading h3{margin:8px 0;font-size:19px}.schematic-note{color:var(--muted);font:500 10px var(--font-mono)}.section-drawing{border:1px solid var(--line);background:#fbfcfc;width:100%;height:auto;display:block}.section-scroll{scrollbar-gutter:stable;overflow-x:auto}.section-axis{stroke:#263a41;stroke-width:1.3px;stroke-dasharray:18 9 3 9}.dimension-guide{stroke-width:.75px;stroke-opacity:.72}.hole-guide{stroke:#7f9ed5}.shaft-guide{stroke:#2362ac}.dimension-line{stroke:#2d69b3;stroke-width:.85px;marker-start:url(#dimension-arrow);marker-end:url(#dimension-arrow)}.dimension-hitbox{stroke:#0000;stroke-width:18px;pointer-events:stroke}.dimension-measure{cursor:help;outline:none}.dimension-measure:focus-visible .dimension-line{stroke-width:1.5px}.tolerance-boundary{vector-effect:non-scaling-stroke;stroke-width:.9px}.hole-boundary{stroke:#527ebd}.shaft-boundary{stroke:#124982}.dimension-text{fill:#2d69b3;font:600 10px var(--font-sans);text-anchor:middle}.dimension-label,.dimension-value{transition:opacity .12s}.dimension-value,.dimension-measure:hover .dimension-label,.dimension-measure:focus .dimension-label{opacity:0}.dimension-measure:hover .dimension-value,.dimension-measure:focus .dimension-value{opacity:1}.section-part-label{font:650 17px var(--font-sans)}.hole-label{fill:#7899d5}.shaft-label{fill:#14559f}.section-note{fill:var(--muted);font:600 11px var(--font-sans)}.fit-visualization.fit-transition{box-shadow:inset 4px 0 #d69220}.fit-visualization.fit-interference{box-shadow:inset 4px 0 #d65445}.fit-visualization.fit-clearance{box-shadow:inset 4px 0 var(--accent)}.tolerance-zone-card{border:1px solid var(--line);background:#fff;margin-top:20px;padding:18px}.tolerance-zone-title{justify-content:space-between;gap:16px;font-size:11px;display:flex}.tolerance-zone-title span{color:var(--muted)}.tolerance-zone-scale{background:#f4f7f6;height:92px;margin-top:14px;position:relative;overflow:hidden}.tolerance-zero-line{border-left:1px dashed var(--ink);position:absolute;top:0;bottom:0;left:50%}.tolerance-zone-bar{white-space:nowrap;background:var(--accent);color:#fff;height:44px;font:700 14px var(--font-mono);place-items:center;display:grid;position:absolute;top:24px;overflow:visible}.tolerance-limit-grid{margin-top:20px}.tolerance-limit-grid span{border-bottom:1px solid var(--line);padding:8px 0}.fit-presets,.basis-assistants{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.fit-presets{margin:18px 0 10px}.secondary-button,.text-button{min-height:38px;border:1px solid var(--line)!important;background:var(--white)!important;width:auto!important;color:var(--ink)!important;font:650 13px var(--font-mono)!important;padding:8px 12px!important}.secondary-button[aria-pressed=true]{box-shadow:inset 0 -3px var(--accent);border-color:var(--accent)!important}.text-button{text-decoration:underline;color:var(--accent-dark)!important;border:0!important;padding-inline:0!important}.basis-assistants{justify-content:space-between;margin-bottom:16px}.fit-cluster-tools,.fit-landing-copy{border:1px solid var(--line);background:var(--white);margin:32px 0;padding:30px}.fit-cluster-tools h2,.fit-landing-copy h2{margin:8px 0 12px}.comparison-controls{grid-template-columns:repeat(2,minmax(130px,1fr)) auto;align-items:end;gap:12px;margin-top:20px;display:grid}.comparison-controls label{gap:6px;display:grid}.comparison-controls button{min-height:48px}.comparison-table-wrap{margin-top:24px;overflow-x:auto}.comparison-table{border-collapse:collapse;width:100%}.comparison-table th,.comparison-table td{border-bottom:1px solid var(--line);text-align:left;padding:12px}.comparison-table .is-muted{opacity:.42}.comparison-table .is-match{box-shadow:inset 3px 0 var(--accent)}.fit-copy-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.fit-copy-grid article{background:var(--soft);border-top:3px solid var(--accent);padding:20px}.fit-copy-grid h3{margin:0 0 8px}.fit-copy-grid p{color:var(--muted);margin:0;line-height:1.6}@media (max-width:760px){.primary-results{grid-template-columns:1fr}.visual-heading{flex-direction:column;align-items:flex-start;gap:8px}.fit-visualization{padding:24px 16px}.section-scroll .section-drawing{min-width:650px}.limit-grid{grid-template-columns:1fr}.primary-results strong{font-size:20px}.comparison-controls,.fit-copy-grid{grid-template-columns:1fr}.fit-cluster-tools,.fit-landing-copy{padding:20px}.basis-assistants{justify-content:flex-start}}
.bearing-badge{gap:0}.bearing-badge small{color:var(--muted);font:650 10px var(--font-mono)}.bearing-input-grid{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.bearing-input-grid>div{flex-direction:column;display:flex}.bearing-input-grid>div>.unit-field{margin-top:auto}.unit-field{background:#fff;border:1px solid #b8c5c7;grid-template-columns:1fr auto;display:grid}.unit-field input{border:0;min-width:0}.unit-field span{color:var(--muted);font:650 11px var(--font-mono);align-items:center;padding:0 12px;display:flex}.advanced-inputs{border-top:1px solid var(--line);margin-top:20px;padding-top:14px}.advanced-inputs summary{cursor:pointer;color:var(--accent-dark);font-size:12px;font-weight:700}.bearing-primary{grid-template-columns:1fr 1fr;gap:10px;display:grid}.bearing-primary div{border:1px solid var(--line);background:#fff;padding:17px}.bearing-primary span,.bearing-secondary span{color:var(--muted);margin-bottom:7px;font-size:11px;display:block}.bearing-primary strong{font:700 20px var(--font-mono);letter-spacing:-.04em;display:block}.bearing-secondary{grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;display:grid}.bearing-secondary div{background:#ffffffb8;padding:12px 14px}.bearing-secondary b{font:650 13px var(--font-mono)}.life-bars{border-top:1px solid var(--line);margin-top:22px;padding-top:14px}.life-bars h3{margin:0 0 12px;font-size:12px}.life-bars div{grid-template-columns:48px 1fr;align-items:center;margin:8px 0;display:grid;overflow:hidden}.life-bars span{color:var(--muted);font:600 10px var(--font-mono)}.life-bars i{background:var(--accent);height:12px;transition:width .18s;display:block}.life-bars div:first-of-type i{background:#243b43}.bearing-warning{color:#76510c;background:#fff8e8;border-left:3px solid #d69220;padding:9px 11px;font-size:11px;line-height:1.45}@media (max-width:760px){.bearing-input-grid,.bearing-primary,.bearing-secondary{grid-template-columns:1fr}.site-header nav{gap:14px}.site-header nav a:first-child{display:none}}
.home-page{padding-bottom:84px}.home-hero{align-items:center;min-height:440px}.home-hero h1{max-width:900px}.home-count{flex:0 0 102px;height:102px}.home-count strong{letter-spacing:.08em;text-transform:uppercase;margin-top:5px;font-size:9px}.calculator-index{padding-top:62px}.calculator-index-heading{grid-template-columns:1fr minmax(280px,440px);align-items:end;gap:48px;margin-bottom:28px;display:grid}.calculator-index-heading h2{letter-spacing:-.04em;margin:10px 0 0;font-size:clamp(28px,3vw,40px)}.calculator-index-heading p{color:var(--muted);margin:0;line-height:1.6}.category-overview-heading{margin-bottom:22px}.home-category-grid{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:64px;display:grid}.home-category-link{border:1px solid var(--line);background:var(--white);grid-template-columns:1fr auto;gap:8px 18px;padding:18px;display:grid}.home-category-link:hover{border-color:#9eb1b3;text-decoration:none}.home-category-link span{font-weight:750}.home-category-link b{color:var(--accent-dark)}.home-category-link small{color:var(--muted);grid-column:1/-1;line-height:1.45}.home-card-grid{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.home-card{border:1px solid var(--line);background:var(--white);flex-direction:column;min-width:0;transition:border-color .16s,transform .16s,box-shadow .16s;display:flex}.home-card:hover{border-color:#9eb1b3;text-decoration:none;transform:translateY(-3px);box-shadow:0 18px 45px #10242b17}.home-card-topline{border-bottom:1px solid var(--line);color:var(--muted);font:600 10px var(--font-mono);letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;padding:14px 18px;display:flex}.home-card-topline span:first-child{color:var(--accent-dark)}.home-card-graphic{border-bottom:1px solid var(--line);background-color:#edf5f2;background-image:linear-gradient(#10242b0d 1px,#0000 1px),linear-gradient(90deg,#10242b0d 1px,#0000 1px);background-size:20px 20px;height:208px;position:relative;overflow:hidden}.home-card-graphic img{object-fit:cover;transition:transform .42s cubic-bezier(.2,.7,.2,1),filter .18s}.unit-card-graphic{color:var(--ink);font:700 clamp(18px, 2.2vw, 28px) var(--font-mono);justify-content:center;align-items:center;gap:22px;display:flex}.unit-card-graphic span{border:1px solid var(--accent);background:#ffffffc7;padding:13px 15px}.unit-card-graphic b{color:var(--accent-dark);font-size:28px}.engineering-symbol-graphic{font:700 27px var(--font-mono);color:var(--accent-dark);justify-content:center;align-items:center;gap:28px;display:flex}.engineering-symbol-graphic b{text-align:center;border:2px solid var(--ink);min-width:90px;color:var(--ink);background:#ffffffbf;padding:16px}.mechanics-card-graphic{background-color:#f2f7f5;background-size:16px 16px}.mechanics-card-graphic svg{width:100%;height:100%;font:600 12px var(--font-mono);color:var(--ink);display:block}.mechanics-card-graphic svg *{vector-effect:non-scaling-stroke}.mechanics-solid{fill:#00a88421;stroke:var(--ink);stroke-width:2px}.mechanics-axis{stroke:#718085;stroke-width:1px;stroke-dasharray:7 5}.mechanics-centroid{fill:var(--accent-dark)}.mechanics-dimension,.mechanics-load{fill:none;stroke:var(--accent-dark);stroke-width:1.4px;marker-start:url(#section-arrow);marker-end:url(#section-arrow)}.mechanics-formula{fill:var(--accent-dark);font-size:16px}.mechanics-beam{fill:#ffffffdb;stroke:var(--ink);stroke-width:2px}.mechanics-neutral{stroke:#718085;stroke-dasharray:6 5}.mechanics-moment{fill:none;stroke:var(--accent-dark);stroke-width:2px;marker-end:url(#stress-arrow)}.mechanics-stress-field{fill:#00a8842b;stroke:var(--accent-dark);stroke-width:1.4px}.mechanics-stress-line{stroke:var(--accent-dark);stroke-width:1.4px}.mechanics-beam-line{stroke:var(--ink);stroke-width:6px}.mechanics-support{fill:#fff;stroke:var(--ink);stroke-width:1.5px}.mechanics-load{marker-start:none;marker-end:url(#load-arrow);stroke-width:2px}.mechanics-deflection{fill:none;stroke:var(--accent);stroke-width:3px;stroke-dasharray:7 4}.mechanics-deflection+.mechanics-dimension{marker-start:none;marker-end:url(#load-arrow)}.mechanics-caption{border-left:3px solid var(--accent);color:var(--accent-dark);font:700 11px var(--font-mono);letter-spacing:.06em;background:#ffffffe6;padding:5px 8px;position:absolute;top:14px;left:16px}.home-card:hover .mechanics-card-graphic svg{transform:scale(1.012)}.mechanics-card-graphic svg{transition:transform .22s}.home-card:hover .home-card-graphic img{filter:saturate(1.04)contrast(1.02);transform:scale(1.025)}.fit-reference{border-top:1px dashed #809195;position:absolute;top:50%;left:12%;right:12%}.fit-hole,.fit-shaft{height:44px;font:700 14px var(--font-mono);border:2px solid;padding:10px 13px;position:absolute;left:18%;right:18%}.fit-hole{color:#6d8ecb;background:#6d8ecb1f;border-color:#6d8ecb;top:39px}.fit-shaft{color:var(--accent-dark);border-color:var(--accent);text-align:right;background:#00a88421;bottom:39px;left:29%}.fit-measure{color:var(--muted);font:600 10px var(--font-mono);writing-mode:vertical-rl;position:absolute;top:93px;left:18px;transform:rotate(180deg)}.bearing-card-graphic{place-items:center;display:grid}.bearing-ring{border:13px solid #243b43;border-radius:50%;position:absolute}.bearing-ring-outer{width:156px;height:156px}.bearing-ring-inner{border-width:10px;width:72px;height:72px}.bearing-ball{background:var(--accent);border:3px solid #edf5f2;border-radius:50%;width:25px;height:25px;position:absolute}.ball-one{transform:translateY(-54px)}.ball-two{transform:translate(47px,27px)}.ball-three{transform:translate(-47px,27px)}.bearing-life-mark{font:700 22px var(--font-mono);color:var(--accent-dark);position:absolute;bottom:18px;right:24px}.bearing-life-mark sub{font-size:11px}.spring-card-graphic{place-items:center;display:grid}.spring-card-plate{background:#243b43;height:4px;position:absolute;left:25%;right:25%}.spring-card-plate.top{top:27px}.spring-card-plate.bottom{bottom:27px}.spring-card-coil{background:repeating-linear-gradient(160deg, transparent 0 12px, var(--accent) 13px 18px, transparent 19px 28px);border-left:3px solid var(--accent-dark);border-right:3px solid var(--accent-dark);width:105px;height:148px}.spring-card-mark{color:var(--accent-dark);font:700 11px var(--font-mono);position:absolute;bottom:10px;right:18px}.disc-card-graphic{place-items:center;display:grid}.disc-card-ring{border:15px solid var(--accent);width:178px;height:76px;box-shadow:0 7px 0 var(--accent-dark);background:#edf5f2;border-radius:50%;position:absolute;transform:perspective(220px)rotateX(62deg)}.disc-card-ring.back{opacity:.45;transform:translateY(-35px)perspective(220px)rotateX(62deg)}.disc-card-ring.middle{opacity:.72;transform:translateY(-7px)perspective(220px)rotateX(62deg)}.disc-card-ring.front{transform:translateY(22px)perspective(220px)rotateX(62deg)}.disc-card-mark{color:var(--accent-dark);font:700 13px var(--font-mono);position:absolute;bottom:10px;right:18px}.thread-card-profile{background:repeating-linear-gradient(135deg, transparent 0 22px, var(--accent-dark) 23px 27px, transparent 28px 49px);height:66px;position:absolute;left:12%;right:12%}.thread-card-profile.top{top:29px}.thread-card-profile.bottom{opacity:.62;bottom:28px;transform:rotate(180deg)}.thread-card-axis{border-top:1px dashed #718085;position:absolute;top:50%;left:10%;right:10%}.thread-card-mark{color:var(--accent-dark);font:700 11px var(--font-mono);background:#edf5f2;padding:4px 7px;position:absolute;bottom:10px;right:18px}.home-card-content{flex:1;padding:27px 28px 24px}.home-card-content h3{letter-spacing:-.035em;margin:0 0 12px;font-size:25px}.home-card-content p{color:var(--muted);margin:0;line-height:1.62}.standard-list{flex-wrap:wrap;gap:7px;margin-top:22px;display:flex}.standard-list span{background:var(--technical);color:var(--accent-dark);font:650 10px var(--font-mono);padding:6px 8px}.home-card-link{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:17px 28px;font-size:13px;font-weight:700;display:flex}.home-card-link b{color:var(--accent-dark);font-size:21px;transition:transform .16s}.home-card:hover .home-card-link b{transform:translate(4px)}@media (max-width:980px){.home-card-grid{grid-template-columns:1fr 1fr}}@media (max-width:760px){.home-page{padding-bottom:52px}.home-hero{min-height:auto;padding:58px 0}.calculator-index{padding-top:42px}.calculator-index-heading{grid-template-columns:1fr;gap:16px}.home-card-grid,.home-category-grid{grid-template-columns:1fr}.home-card-graphic{height:180px}.home-card-content{padding:23px 22px}.home-card-link{padding:16px 22px}}
.spring-badge{gap:1px;width:150px;min-width:150px}.spring-badge span{white-space:nowrap;font-size:18px}.spring-badge small{color:var(--muted);font:650 9px var(--font-mono);text-transform:uppercase}.spring-input-grid{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.spring-shell fieldset{border:0;border-top:1px solid var(--line);margin:24px 0 0;padding:0}.spring-shell legend{color:var(--accent-dark);padding:16px 0 0;font-size:12px;font-weight:750}.spring-primary{grid-template-columns:1fr 1fr;gap:10px;display:grid}.spring-primary>div{border:1px solid var(--line);background:#fff;padding:16px}.spring-primary span{color:var(--muted);margin-bottom:7px;font-size:11px;display:block}.spring-primary strong{font:700 18px var(--font-mono);letter-spacing:-.035em}.spring-checks{grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;display:grid}.spring-checks>div{border-left:3px solid var(--accent);background:#ffffffbf;justify-content:space-between;gap:10px;padding:11px 13px;font-size:11px;display:flex}.spring-checks .spring-check-critical{background:#fff2ef;border-color:#c44d3d}.spring-checks b{font-family:var(--font-mono)}.spring-warning{color:#76510c;background:#fff8e8;border-left:3px solid #d69220;padding:9px 11px;font-size:11px;line-height:1.45}.spring-visualization{border:1px solid var(--line);background:#fff;margin:0 0 20px;padding:30px 34px}.spring-visualization .schematic-note{font-size:12px}.spring-visual-grid{grid-template-columns:1.2fr 1fr;gap:26px;margin-top:20px;display:grid}.spring-section-svg,.spring-force-chart svg{border:1px solid var(--line);background:#fbfcfc;width:100%;height:auto;display:block}.spring-plate{stroke:#20353d;stroke-width:5px}.muted-plate{stroke:#8a9a9e}.loaded-plate{stroke:var(--accent-dark)}.spring-wire{fill:none;stroke-width:7px;stroke-linecap:round;stroke-linejoin:round}.free-wire{stroke:#789093}.loaded-wire{stroke:var(--accent)}.spring-dimension{stroke:#24705f;stroke-width:1px;marker-start:url(#spring-arrow);marker-end:url(#spring-arrow)}.spring-dimension-text,.force-label,.chart-label,.limit-label,.chart-axis-label{fill:#24705f;font:650 12px var(--font-mono)}.spring-state-label{fill:var(--muted);font:700 13px var(--font-sans);text-anchor:middle}.force-arrow{fill:none;stroke:#c44d3d;stroke-width:2px;marker-end:url(#force-arrowhead)}.force-label{fill:#9b392d}.spring-force-chart h4{margin:0 0 10px;font-size:14px}.chart-axis{stroke:#607277;stroke-width:1px}.chart-line{stroke:var(--accent-dark);stroke-width:2.5px}.limit-line{stroke:#d69220;stroke-width:1px;stroke-dasharray:5 4}.chart-point{fill:var(--accent);stroke:#fff;stroke-width:2px}.chart-point.first{fill:#243b43}.chart-label{text-anchor:middle}.curve-hit-area{fill:#0000;cursor:crosshair;outline:none}.curve-hit-area:focus-visible{stroke:var(--accent);stroke-width:2px;stroke-dasharray:4 3}.curve-readout line{stroke:#789093;stroke-width:1px;stroke-dasharray:3 3;pointer-events:none}.curve-readout circle{fill:var(--accent);stroke:#fff;stroke-width:2px;pointer-events:none}.curve-readout rect{fill:var(--ink);stroke:var(--ink);pointer-events:none}.curve-readout text{fill:#fff;font:650 10px var(--font-mono);pointer-events:none}.curve-shape-note{color:var(--muted);font:600 11px/1.4 var(--font-mono);margin:8px 0 0}.limit-label{fill:#956400;text-anchor:end}.clearance-indicator{background:var(--technical);border-left:3px solid var(--accent);justify-content:space-between;padding:12px 14px;font-size:13px;display:flex}.clearance-indicator.critical{background:#fff2ef;border-color:#c44d3d}.clearance-indicator strong{font-family:var(--font-mono)}@media (max-width:900px){.spring-visual-grid{grid-template-columns:1fr}}@media (max-width:760px){.spring-input-grid,.spring-primary,.spring-checks{grid-template-columns:1fr}.spring-visualization{padding:24px 16px}.spring-section-scroll{overflow-x:auto}.spring-section-svg{min-width:520px}}
.belleville-badge{gap:1px}.belleville-badge span{font-size:18px}.belleville-badge small{color:var(--muted);font:650 9px var(--font-mono)}.belleville-input-grid{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.belleville-shell fieldset{border:0;border-top:1px solid var(--line);margin:0 0 22px;padding:0}.belleville-shell fieldset:first-of-type{border-top:0}.belleville-shell legend{color:var(--accent-dark);padding:13px 0 0;font-size:12px;font-weight:750}.belleville-primary{grid-template-columns:1fr 1fr;gap:10px;display:grid}.belleville-primary>div{border:1px solid var(--line);background:#fff;padding:16px}.belleville-primary span{min-height:30px;color:var(--muted);margin-bottom:5px;font-size:11px;display:block}.belleville-primary strong{font:700 18px var(--font-mono);letter-spacing:-.035em}.belleville-warning{color:#76510c;background:#fff8e8;border-left:3px solid #d69220;padding:9px 11px;font-size:11px;line-height:1.45}.belleville-visualization{border:1px solid var(--line);background:#fff;margin:0 0 20px;padding:30px 34px}.belleville-visualization .schematic-note{font-size:12px}.belleville-visual-grid{grid-template-columns:1.08fr 1fr;gap:26px;margin-top:20px;display:grid}.belleville-chart-only{grid-template-columns:1fr}.belleville-section>svg,.belleville-chart svg{border:1px solid var(--line);background:#fbfcfc;width:100%;height:auto;display:block}.technical-disc-section{fill:url(#disc-section-hatch);stroke:#263a41;stroke-width:2.4px;stroke-linejoin:round}.technical-hatch-line{stroke:#718085;stroke-width:1.2px}.technical-centerline{stroke:#aab5b8;stroke-width:1px;stroke-dasharray:12 7}.technical-extension{stroke:#718085;stroke-width:1px}.technical-dimension{stroke:#263a41;stroke-width:1.2px;marker-start:url(#technical-dimension-arrow);marker-end:url(#technical-dimension-arrow)}.technical-arrow-head{fill:#263a41}.technical-dimension-label{fill:#263a41;font:650 12px var(--font-mono);text-anchor:middle}.technical-vertical-label{dominant-baseline:middle;transform-box:fill-box;transform-origin:50%;transform:rotate(-90deg)}.disc-stack-strip{border:1px solid var(--line);border-top:0;grid-template-columns:auto 150px 1fr;align-items:center;gap:16px;min-height:132px;padding:10px 14px;font-size:12px;display:grid}.disc-stack-strip>svg{background:0 0;border:0;width:150px;height:108px;display:block}.stack-disc{fill:none;stroke:var(--accent-dark);stroke-width:3.2px;stroke-linecap:round;stroke-linejoin:round}.stack-disc.reversed{stroke:var(--accent)}.disc-stack-strip strong{font:700 11px var(--font-mono);gap:7px;display:grid}.disc-stack-strip strong span{display:block}.belleville-chart h4{margin:0 0 10px;font-size:14px}.disc-curve{fill:none;stroke:var(--accent-dark);stroke-width:2.5px}.disc-working-point{fill:var(--accent);stroke:#fff;stroke-width:2px}@media (max-width:900px){.belleville-visual-grid{grid-template-columns:1fr}}@media (max-width:760px){.belleville-input-grid,.belleville-primary{grid-template-columns:1fr}.belleville-visualization{padding:24px 16px}.belleville-section{overflow-x:auto}.belleville-section>svg{min-width:520px}.disc-stack-strip{grid-template-columns:auto 130px 1fr}.disc-stack-strip>svg{width:130px}}
.thread-badge small{color:var(--muted);font:650 9px var(--font-mono)}.thread-size-grid,.thread-tolerance-grid{grid-template-columns:1fr 1fr;align-items:end;gap:0 16px;display:grid}.thread-tolerance-grid{grid-template-columns:repeat(3,1fr)}.thread-shell fieldset{border:0;border-top:1px solid var(--line);margin:22px 0 0;padding:14px 0 0}.thread-shell legend{color:var(--accent-dark);font-size:12px;font-weight:750}.thread-results h3{margin:22px 0 10px;font-size:13px}.thread-designation{border-left:4px solid var(--accent);background:#fff;padding:18px}.thread-designation span,.thread-basic-grid span,.thread-clearance span{color:var(--muted);margin-bottom:6px;font-size:11px;display:block}.thread-designation strong{font:750 21px var(--font-mono)}.thread-basic-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.thread-basic-grid>div{border:1px solid var(--line);background:#fff;padding:12px}.thread-basic-grid>div:last-child{grid-column:1/-1}.thread-basic-grid strong,.thread-clearance strong{font:700 12px var(--font-mono)}.thread-limit-table{border:1px solid var(--line);background:#fff;margin-top:9px}.thread-limit-table h4{border-bottom:1px solid var(--line);color:var(--accent-dark);margin:0;padding:10px 12px;font-size:11px}.thread-limit-table>div{font:650 11px var(--font-mono);border-top:1px solid #edf1f1;grid-template-columns:52px 1fr 1fr;gap:8px;padding:8px 12px;display:grid}.thread-limit-table .thread-limit-head{color:var(--muted);font:600 9px var(--font-sans);border-top:0}.thread-clearance{grid-template-columns:1fr 1fr;gap:8px;margin-top:12px;display:grid}.thread-clearance>div{background:var(--technical);padding:12px}.thread-visualization{border:1px solid var(--line);background:#fff;margin:0 0 20px;padding:30px 34px}.thread-visualization svg{border:1px solid var(--line);background:#fbfcfc;width:100%;height:auto;margin-top:18px;display:block}.thread-external-profile{fill:#00a8841a;stroke:var(--accent-dark);stroke-width:4px;stroke-linejoin:round}.thread-internal-profile{fill:none;stroke:#718085;stroke-width:3px;stroke-linejoin:round}.thread-pitch-line{stroke:var(--accent);stroke-width:1.3px;stroke-dasharray:8 5}.thread-axis{stroke:#aab5b8;stroke-width:1px;stroke-dasharray:12 7}.thread-dimension{stroke:#263a41;stroke-width:1.2px;marker-start:url(#thread-arrow);marker-end:url(#thread-arrow)}#thread-arrow path{fill:#263a41}.thread-extension{stroke:#718085;stroke-width:1px}.thread-dimension-label{fill:#263a41;font:650 11px var(--font-mono);text-anchor:middle}.thread-vertical-label{dominant-baseline:middle;transform-box:fill-box;transform-origin:50%;transform:rotate(-90deg)}.thread-legend text{fill:var(--muted);font:600 10px var(--font-mono)}.thread-major-swatch{stroke:var(--accent-dark);stroke-width:4px}.thread-pitch-swatch{stroke:var(--accent);stroke-width:2px;stroke-dasharray:5 3}.thread-minor-swatch{stroke:#718085;stroke-width:3px}@media (max-width:760px){.thread-size-grid,.thread-tolerance-grid,.thread-basic-grid,.thread-clearance{grid-template-columns:1fr}.thread-basic-grid>div:last-child{grid-column:auto}.thread-visualization{padding:24px 16px;overflow-x:auto}.thread-visualization svg{min-width:620px}}
.site-header nav{align-items:center}.unit-preset{border:1px solid var(--line);background:var(--paper);padding:2px;display:inline-flex}.unit-preset button{width:auto;height:26px;color:var(--muted);font:700 9px var(--font-mono);background:0 0;margin:0;padding:0 8px}.unit-preset button:hover{background:var(--technical);color:var(--accent-dark)}.unit-preset button.active{background:var(--ink);color:#fff}.quantity-field{grid-template-columns:minmax(0,1fr) auto;display:grid}.quantity-field input{border-right:0}.quantity-field .unit-select,.unit-select{width:auto;min-width:74px;padding:0 25px 0 10px;font-size:13px}.quantity-output{align-items:center;gap:7px;display:inline-flex}.quantity-output .unit-select{min-width:66px;height:30px}@media (max-width:900px){.site-header nav{gap:14px}.unit-preset{order:2}}@media (max-width:760px){.unit-preset{display:inline-flex}.unit-preset button{display:block!important}.site-header nav{gap:10px}.site-header nav>a:nth-child(2),.site-header nav>a:nth-child(3){display:none}}
.gear-input-grid{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.gear-input-grid label{min-width:0}.gear-shell details{border-top:1px solid var(--line);margin-top:22px;padding-top:16px}.gear-shell summary{cursor:pointer;color:var(--accent-dark);font-size:13px;font-weight:700}.gear-result-list{margin:0}.gear-result-list div{border-bottom:1px solid var(--line);justify-content:space-between;gap:20px;padding:10px 0;display:flex}.gear-result-list dt{color:var(--muted);font-size:12px}.gear-result-list dd{font:650 13px var(--font-mono);text-align:right;margin:0}.gear-detail-grid{grid-template-columns:1fr 1fr;gap:20px;margin:20px 0;display:grid}.gear-detail-grid article{background:var(--white);border:1px solid var(--line);padding:26px 30px}.gear-detail-grid h3,.result-panel h3{margin:0 0 16px;font-size:18px}.warning,.error-message{background:#fff5d9;border-left:3px solid #d89b18;padding:12px;font-size:12px;line-height:1.5}@media (max-width:760px){.gear-input-grid,.gear-detail-grid{grid-template-columns:1fr}}
.shaft-hub-shell{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}.shaft-hub-shell fieldset{border:0;border-top:1px solid var(--line);margin:22px 0 0;padding:18px 0 0}.shaft-hub-shell legend{font:650 12px var(--font-mono);color:var(--accent-dark);padding-right:10px}.shaft-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px;display:grid}.shaft-hub-input{grid-template-columns:1fr auto;display:grid}.shaft-hub-input input{border-right:0}.shaft-hub-input span{min-width:58px;font:500 12px var(--font-mono);color:var(--muted);border:1px solid #b8c5c7;place-items:center;padding:0 8px;display:grid}.shaft-hub-check{align-items:center;gap:10px;display:flex}.shaft-hub-check input{width:18px;height:18px}.scope-note{font:500 11px var(--font-mono);color:var(--muted);line-height:1.5}.shaft-hub-status{border-left:4px solid;justify-content:space-between;align-items:center;margin-bottom:22px;padding:16px;display:flex}.shaft-hub-status.ok{border-color:var(--accent-dark);background:#e5f6ef}.shaft-hub-status.critical{background:#fff0e6;border-color:#c24d17}.shaft-hub-results{margin:0}.shaft-hub-results>div{border-bottom:1px solid var(--line);justify-content:space-between;gap:20px;padding:14px 0;display:flex}.shaft-hub-results dt{color:var(--muted);font-size:13px}.shaft-hub-results dd{text-align:right;font:650 14px var(--font-mono);margin:0}.shaft-hub-diagram{fill:none;width:220px;max-width:80%;stroke:var(--ink);stroke-width:2px}.shaft-hub-diagram rect{fill:var(--accent);stroke:var(--accent-dark)}.warning,.error-message{color:#813710;background:#fff0e6;padding:12px;font-size:13px}.shaft-hub-badge span{font-size:18px}@media (max-width:900px){.shaft-hub-grid{grid-template-columns:1fr}}@media (max-width:760px){.shaft-hub-shell{grid-template-columns:1fr}}
.bolt-shell{grid-template-columns:1fr 1fr}.bolt-grid{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.bolt-results{margin:0}.bolt-results>div{border-bottom:1px solid var(--line);justify-content:space-between;gap:20px;padding:16px 0;display:flex}.bolt-results dt{color:var(--muted);font-size:13px}.bolt-results dd{text-align:right;font:700 15px var(--font-mono);margin:0}@media (max-width:760px){.bolt-shell,.bolt-grid{grid-template-columns:1fr}}
.result-label.result-label{min-width:0;min-height:0;color:inherit;font-size:inherit;cursor:help;background:0 0;border:0;border-bottom:1px dotted #7b9094;margin:0;padding:0;display:inline;position:relative}.input-panel label,.converter-controls label{width:100%;min-width:0}.input-panel :is(input,select,.input-row,.unit-field,.quantity-field),.converter-controls :is(input,select,.input-row,.unit-field,.quantity-field){min-width:0;max-width:100%}.automatic-input-tooltip{cursor:help;border-bottom:1px dotted #7b9094;width:100%;min-width:0;position:relative}.automatic-input-tooltip:after{z-index:40;background:var(--ink);color:#fff;content:attr(data-input-help);width:min(20rem,100vw - 3rem);font:500 .78rem/1.45 var(--font-sans),sans-serif;letter-spacing:normal;text-align:left;text-transform:none;white-space:normal;opacity:0;pointer-events:none;border:1px solid #b8c8ca;padding:.7rem .8rem;transition:opacity .12s,transform .12s;display:block;position:absolute;bottom:calc(100% + .65rem);left:50%;transform:translate(-50%,.25rem);box-shadow:0 8px 24px #10242b2e}.automatic-input-tooltip:hover,.automatic-input-tooltip:focus-visible{border-bottom-color:var(--accent-dark);color:var(--accent-dark);outline:none}.automatic-input-tooltip:hover:after,.automatic-input-tooltip:focus-visible:after{opacity:1;transform:translate(-50%)}.result-tooltip-trigger:hover,.result-tooltip-trigger:focus-visible{border-bottom-color:var(--accent-dark);color:var(--accent-dark)}.result-tooltip-trigger:focus-visible{outline-offset:3px;outline:2px solid #00a88440}.result-tooltip-content.result-tooltip-content{z-index:30;background:var(--ink);color:#fff;width:min(19rem,100vw - 3rem);min-height:0;font:500 .78rem/1.45 var(--font-sans), sans-serif;letter-spacing:normal;text-align:left;text-transform:none;white-space:normal;opacity:0;pointer-events:none;border:1px solid #b8c8ca;margin:0;padding:.7rem .8rem;transition:opacity .12s,transform .12s;display:block;position:absolute;bottom:calc(100% + .65rem);left:50%;transform:translate(-50%,.25rem);box-shadow:0 8px 24px #10242b2e}.result-tooltip-content:after{border:.35rem solid #0000;border-top-color:var(--ink);content:"";position:absolute;top:100%;left:50%;transform:translate(-50%)}.result-tooltip-trigger:hover .result-tooltip-content,.result-tooltip-trigger:focus-visible .result-tooltip-content{opacity:1;transform:translate(-50%)}@media (max-width:760px){.automatic-input-tooltip:after{width:auto;position:fixed;bottom:1rem;left:1rem;right:1rem;transform:translateY(.25rem)}.automatic-input-tooltip:hover:after,.automatic-input-tooltip:focus-visible:after{transform:translateY(0)}.result-tooltip-content.result-tooltip-content{width:auto;position:fixed;bottom:1rem;left:1rem;right:1rem;transform:translateY(.25rem)}.result-tooltip-content:after{display:none}.result-tooltip-trigger:hover .result-tooltip-content,.result-tooltip-trigger:focus-visible .result-tooltip-content{transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.result-tooltip-content{transition:none}}
.standard-guidance{--guide:#007b63;border-top:4px solid var(--guide);background:var(--white);margin:42px 0 30px;box-shadow:0 12px 34px #10242b0d}.guidance-lead{grid-template-columns:120px 1fr;gap:28px;padding:30px 38px 24px;display:grid}.guidance-marker{background:var(--ink);color:#fff;min-height:100px;font:700 23px var(--font-mono);letter-spacing:-.05em;place-items:center;display:grid}.guidance-lead h2{letter-spacing:-.035em;margin:7px 0 10px;font-size:clamp(24px,3vw,34px)}.guidance-lead p{max-width:800px;color:var(--muted);margin:8px 0 0;line-height:1.6}.guidance-lead .guidance-calculation{color:var(--ink);margin-top:0;font-weight:620}.guidance-examples{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:120px 1fr;gap:28px;margin:0 38px;padding:18px 0;display:grid}.guidance-examples>span{font:650 11px var(--font-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--guide)}.guidance-examples ul{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.guidance-examples li{background:var(--technical);padding:7px 10px;font-size:12px}.guidance-related{padding:22px 38px 26px}.guidance-related h2{margin:0 0 12px;font-size:15px}.guidance-related>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.guidance-related a{border:1px solid var(--line);justify-content:space-between;gap:16px;padding:15px;text-decoration:none;display:flex}.guidance-related a:hover,.guidance-related a:focus-visible{border-color:var(--guide);background:color-mix(in srgb,var(--guide) 4%,white)}.guidance-related span{gap:5px;display:grid}.guidance-related strong{font-size:13px}.guidance-related small{color:var(--muted);font-size:12px;line-height:1.4}.guidance-related b{color:var(--guide)}.guidance-details{border-top:1px solid var(--line)}.guidance-details summary{cursor:pointer;color:var(--guide);font:700 12px var(--font-mono);padding:17px 38px}.guidance-details[open] summary{background:color-mix(in srgb,var(--guide) 4%,white)}.guidance-columns{grid-template-columns:1fr 1fr;gap:42px;padding:18px 38px 38px;display:grid}.guidance-columns>section>h2{margin:0 0 13px;font-size:15px}.guidance-list{border-top:1px solid var(--ink)}.guidance-list article,.guidance-list a{border-bottom:1px solid var(--line);grid-template-columns:30px 1fr auto;gap:12px;padding:15px 0;text-decoration:none;display:grid}.guidance-list b{color:var(--guide);font:600 10px var(--font-mono);padding-top:3px}.guidance-list h3{margin:0 0 4px;font-size:13px}.guidance-list p{color:var(--muted);margin:0;font-size:12px;line-height:1.5}.guidance-list a>span{color:var(--guide)}.guidance-list a:hover h3,.guidance-list a:focus-visible h3{color:var(--guide);text-decoration:underline}.guidance-next{border-top-color:var(--guide)}.guidance-bearing{--guide:#316c91}.guidance-compression{--guide:#6a7d2d}.guidance-belleville{--guide:#956400}.guidance-gear{--guide:#74569a}.guidance-parallel-key{--guide:#8b572a}.guidance-interference-fit{--guide:#a34848}.guidance-bolt-torque,.guidance-bolt-preload,.guidance-bolt-stress,.guidance-bolt-proof{--guide:#006e76}@media (max-width:760px){.guidance-lead,.guidance-examples{grid-template-columns:1fr}.guidance-marker{min-height:68px}.guidance-columns,.guidance-related>div{grid-template-columns:1fr}.guidance-lead,.guidance-columns,.guidance-related,.guidance-details summary{padding-left:20px;padding-right:20px}.guidance-examples{gap:12px;margin-left:20px;margin-right:20px}}
.standard-guidance .guidance-related{padding:22px 38px 26px;display:block}.standard-guidance .guidance-related>h2{margin:0 0 12px;font-size:15px}.standard-guidance .guidance-related>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.standard-guidance .guidance-related>div>a{border:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:16px;min-width:0;padding:15px;text-decoration:none;display:flex}.standard-guidance .guidance-related>div>a>span{gap:5px;min-width:0;display:grid}.standard-guidance .guidance-related strong,.standard-guidance .guidance-related small{display:block}.standard-guidance .guidance-related small{color:var(--muted);font-size:12px;line-height:1.4}.standard-guidance .guidance-related a:hover,.standard-guidance .guidance-related a:focus-visible{border-color:var(--guide);background:color-mix(in srgb, var(--guide) 4%, white)}.standard-guidance .guidance-details{border-top:1px solid var(--line);display:block}.standard-guidance .guidance-details>summary{cursor:pointer;color:var(--guide);font:700 12px var(--font-mono);padding:17px 38px;list-style-position:inside;display:list-item}@media (max-width:760px){.standard-guidance .guidance-related{padding-left:20px;padding-right:20px}.standard-guidance .guidance-related>div{grid-template-columns:1fr}.standard-guidance .guidance-details>summary{padding-left:20px;padding-right:20px}}
.category-page{padding-bottom:80px}.category-hero{align-items:center;min-height:330px}.category-workflow{border-bottom:1px solid var(--line);grid-template-columns:180px 1fr;gap:40px;padding:26px 0;display:grid}.category-workflow span{font:650 10px var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent-dark)}.category-workflow p{max-width:850px;color:var(--muted);margin:0;line-height:1.65}.category-index{padding-top:55px}.category-index h2{letter-spacing:-.04em;margin:10px 0 26px;font-size:clamp(28px,3vw,40px)}.category-card-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.category-card{border:1px solid var(--line);background:var(--white);flex-direction:column;min-height:245px;padding:25px;transition:transform .16s,border-color .16s,box-shadow .16s;display:flex}.category-card:hover{border-color:#9eb1b3;text-decoration:none;transform:translateY(-2px);box-shadow:0 14px 35px #10242b12}.category-card>div{color:var(--accent-dark);font:650 10px var(--font-mono);text-transform:uppercase;letter-spacing:.06em;justify-content:space-between;gap:20px;display:flex}.category-card small{text-align:right;color:var(--muted)}.category-card h3{letter-spacing:-.03em;margin:26px 0 10px;font-size:23px}.category-card p{color:var(--muted);margin:0 0 24px;line-height:1.58}.category-card strong{margin-top:auto;font-size:13px}@media (max-width:760px){.category-workflow{grid-template-columns:1fr;gap:8px}.category-card-grid{grid-template-columns:1fr}.category-card{min-height:220px}}
.converter-page{padding-bottom:80px}.converter-shell{border:1px solid var(--line);background:var(--white);grid-template-columns:1fr 1fr;margin:34px 0 20px;display:grid;box-shadow:0 18px 50px #10242b12}.converter-controls,.converter-result{padding:34px 38px}.converter-controls{border-right:1px solid var(--line)}.converter-result{background:linear-gradient(145deg,#f8fbfa,#edf5f2)}.converter-field-grid{grid-template-columns:1.4fr 1fr;gap:16px;display:grid}.converter-swap{margin-top:22px}.converter-result output{border-bottom:2px solid var(--accent);align-items:baseline;gap:12px;padding:24px 0 16px;display:flex}.converter-result output strong{font:700 clamp(30px,4vw,48px) var(--font-mono);overflow-wrap:anywhere}.converter-result output span{font:650 17px var(--font-mono);color:var(--accent-dark)}.converter-result>p{color:var(--muted);line-height:1.55}.converter-result h3{margin-top:30px;font-size:14px}.converter-result dl{background:var(--line);border:1px solid var(--line);grid-template-columns:1fr 1fr;gap:1px;margin:0;display:grid}.converter-result dl div{background:#ffffffd1;justify-content:space-between;gap:15px;padding:10px 12px;display:flex}.converter-result dt{font:650 11px var(--font-mono);color:var(--accent-dark)}.converter-result dd{text-align:right;font:600 12px var(--font-mono);overflow-wrap:anywhere;margin:0}.converter-error{color:#9b2c2c}.converter-explainer{grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;display:grid}.converter-explainer article{border-top:2px solid var(--ink);background:var(--white);padding:28px}.converter-explainer h2{margin:0 0 12px;font-size:20px}.converter-explainer p{color:var(--muted);margin:0;line-height:1.65}@media (max-width:760px){.converter-shell{grid-template-columns:1fr}.converter-controls{border-right:0;border-bottom:1px solid var(--line)}.converter-controls,.converter-result{padding:25px 20px}.converter-field-grid,.converter-explainer,.converter-result dl{grid-template-columns:1fr}}
.roadmap-calculator .calculator-shell{margin-top:34px}.roadmap-primary{border-left:4px solid var(--accent);background:#ffffffdb;justify-content:space-between;align-items:baseline;gap:20px;padding:20px 22px;display:flex}.roadmap-primary span{font-weight:700}.roadmap-primary strong{font:700 26px var(--font-mono);text-align:right}.roadmap-results{grid-template-columns:1fr 1fr;gap:0 24px;margin:24px 0;display:grid}.roadmap-results>div{border-bottom:1px solid var(--line);justify-content:space-between;gap:15px;padding:14px 0;display:flex}.roadmap-results dt{color:var(--muted)}.roadmap-results dd{text-align:right;font:650 13px var(--font-mono);margin:0}.technical-placeholder{font:700 38px var(--font-mono);color:var(--accent-dark)}.roadmap-check{align-items:center;gap:10px;display:flex}.roadmap-check input{width:18px;height:18px}.roadmap-calculator .warning{font-size:12px;line-height:1.5}.calculator-context{grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;display:grid}.calculator-context article{background:var(--white);border-top:2px solid var(--ink);padding:28px}.calculator-context h2,.related-roadmap h2{margin:10px 0 12px;font-size:22px}.calculator-context p{color:var(--muted);margin:0;line-height:1.65}.related-roadmap{padding:56px 0 80px}.related-roadmap>h2{margin-bottom:24px;font-size:30px}@media (max-width:760px){.roadmap-results,.calculator-context{grid-template-columns:1fr}.roadmap-primary{flex-direction:column;align-items:flex-start}.roadmap-primary strong{text-align:left}}.spring-curve-card{border:1px solid var(--line);background:#fff;margin:22px 0;padding:18px}.spring-curve-card h3{margin:0 0 12px;font-size:15px}.spring-curve-card svg{width:100%;height:auto;display:block}.spring-curve-card p{color:var(--muted);margin:8px 0 0;font-size:11px}.curve-axis{stroke:#607277;stroke-width:1px}.force-curve{fill:none;stroke:var(--accent-dark);stroke-width:3px}.mechanics-badge{flex:0 0 92px}.mechanics-badge strong{white-space:nowrap}.mechanics-badge span{line-height:1}.section-shape-figure{border:1px solid var(--line);background:#fbfcfc;margin:20px 0 24px}.section-shape-figure figcaption{border-bottom:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:16px;padding:12px 15px;font-size:11px;display:flex}.section-shape-figure figcaption strong{color:var(--ink)}.section-shape-figure svg{width:100%;height:auto;max-height:285px;display:block}.section-shape-figure>p{border-top:1px solid var(--line);color:var(--muted);margin:0;padding:10px 15px;font-size:10px;line-height:1.45}.section-shape-material{fill:url(#section-hatch);stroke:var(--ink);stroke-width:2.2px}.section-shape-void{fill:#fbfcfc;stroke:var(--ink);stroke-width:2.2px}.section-shape-axis{stroke:var(--accent-dark);stroke-width:1.1px;stroke-dasharray:10 6}.section-shape-axis-label,.section-shape-centroid-label{fill:var(--accent-dark);font:700 13px var(--font-mono);paint-order:stroke;stroke:#fbfcfc;stroke-width:4px;stroke-linejoin:round}.section-shape-centroid{fill:var(--accent-dark)}.section-shape-dimension line{stroke:var(--ink);stroke-width:.9px;marker-start:url(#section-dimension-arrow);marker-end:url(#section-dimension-arrow)}.section-shape-dimension text{fill:var(--ink);font:700 14px var(--font-mono);paint-order:stroke;stroke:#fbfcfc;stroke-width:5px;stroke-linejoin:round}.section-shape-extension{stroke:var(--muted);stroke-width:.75px}
.reference-figure{border:1px solid var(--line);background:var(--white);grid-template-columns:minmax(240px,.8fr) minmax(320px,1.2fr);gap:28px;margin:28px 0;padding:30px;display:grid}.reference-figure-copy{align-self:center}.reference-figure h2{margin:10px 0 12px;font-size:24px}.reference-figure p{color:var(--muted);margin:0;line-height:1.6}.reference-figure-image{border:1px solid var(--line);background:#f8faf9;justify-content:center;align-items:center;min-height:260px;padding:16px;display:flex}.reference-figure-image img{object-fit:contain;width:100%;height:auto;max-height:390px;display:block}.reference-figure figcaption{border-top:1px solid var(--line);color:var(--muted);font:500 11px/1.5 var(--font-mono);grid-column:1/-1;padding-top:14px}.reference-figure figcaption a{color:var(--accent-dark);text-decoration:underline}@media (max-width:760px){.reference-figure{grid-template-columns:1fr;padding:20px}.reference-figure figcaption{grid-column:1}.reference-figure-image{min-height:200px}}.bending-reference-image{padding:10px}.bending-reference-image svg{width:100%;height:auto;max-height:410px;display:block}.bending-beam{fill:url(#bending-beam-hatch);stroke:var(--ink);stroke-width:2.2px}.bending-fibre{fill:none;stroke:#88a0a4;stroke-width:1.4px}.bending-neutral-fibre{fill:none;stroke:var(--accent-dark);stroke-width:1.5px;stroke-dasharray:10 6}.bending-centroid{fill:var(--accent-dark)}.bending-neutral-label,.bending-zone-label,.bending-formula,.bending-diagram-heading{font:650 14px var(--font-mono);fill:var(--ink)}.bending-diagram-heading{font-family:var(--font-sans);font-weight:750}.bending-neutral-label{fill:var(--accent-dark)}.bending-neutral-leader{stroke:var(--accent-dark);stroke-width:1px}.bending-moment{fill:none;stroke:var(--accent-dark);stroke-width:2.6px}.bending-moment-label{fill:var(--accent-dark);font:700 25px var(--font-mono)}.bending-zone-label{fill:var(--muted)}.bending-compression-label,.bending-tension-label{text-anchor:middle}.bending-formula{fill:var(--accent-dark);text-anchor:middle;font-size:14px}.beam-load-visualization{border:1px solid var(--line);background:var(--white);grid-template-columns:minmax(220px,.7fr) minmax(420px,1.3fr);gap:24px;margin:28px 0;padding:28px;display:grid}.beam-load-copy{align-self:center}.beam-load-copy h2{margin:10px 0 12px;font-size:24px}.beam-load-copy p{color:var(--muted);margin:0;line-height:1.6}.beam-load-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.beam-load-panel{border:1px solid var(--line);background:#f8faf9;padding:12px}.beam-load-panel h3{margin:0 0 4px;font-size:13px;line-height:1.3}.beam-load-panel svg{width:100%;height:auto;display:block}.beam-load-visualization figcaption{border-top:1px solid var(--line);color:var(--muted);font:500 11px/1.5 var(--font-mono);grid-column:1/-1;padding-top:12px}@media (max-width:900px){.beam-load-visualization{grid-template-columns:1fr}}@media (max-width:560px){.beam-load-grid{grid-template-columns:1fr}}.beam-load-panel svg text{text-transform:none;font-family:Arial,sans-serif;font-variant-caps:normal}.beam-load-panel svg tspan{font-size:11px}
.notch-gallery{border:1px solid var(--line);background:var(--white);margin:32px 0;padding:32px}.notch-gallery-heading{max-width:900px}.notch-gallery-heading h2{margin:8px 0 12px;font-size:28px}.notch-gallery-heading p,.notch-gallery article p{color:var(--muted);line-height:1.55}.notch-gallery-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px;display:grid}.notch-gallery article{border:1px solid var(--line);background:#f8faf9;flex-direction:column;padding:18px;display:flex}.notch-gallery article h3{margin:14px 0 4px;font-size:17px}.notch-gallery article p{flex:1;margin:4px 0 14px;font-size:13px}.notch-gallery article a{color:var(--accent-dark);font:600 11px/1.45 var(--font-mono);text-decoration:underline}.notch-gallery svg{border:1px solid var(--line);background:#fff;width:100%;height:auto}.notch-gallery svg path,.notch-gallery svg rect{fill:#e5f1ee;stroke:var(--ink);stroke-width:2px}.notch-gallery svg .axis{stroke:#9aacb0;stroke-width:1px;stroke-dasharray:8 5}.notch-gallery svg .dimension{fill:none;stroke:#65767a;stroke-width:1px}.notch-gallery svg .accent-line{fill:none;stroke:var(--accent-dark);stroke-width:4px}.notch-gallery svg .cutout{fill:#fff}.notch-gallery svg .key{fill:#b9ded4;stroke:var(--accent-dark)}.notch-gallery svg text{fill:var(--ink);font:600 11px var(--font-mono)}@media (max-width:1000px){.notch-gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:650px){.notch-gallery{padding:20px}.notch-gallery-grid{grid-template-columns:1fr}}
.fit-assistant{margin:34px 0}.fit-assistant-status{background:var(--ink);color:#fff;font:650 12px var(--font-mono);justify-content:space-between;align-items:center;padding:14px 18px;display:flex}.fit-assistant-status>div{gap:7px;display:flex}.fit-assistant-status i{background:#51656b;width:34px;height:3px}.fit-assistant-status i.active{background:var(--accent)}.fit-question,.fit-final{border:1px solid var(--line);background:var(--white);padding:40px}.fit-question h2,.fit-final h2{margin:12px 0 24px;font-size:28px}.fit-question>.secondary-button,.fit-final>.secondary-button{margin-top:18px}.fit-choice-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.fit-choice-grid button{text-align:left;min-height:64px;margin:0}.fit-final>p{max-width:760px;color:var(--muted);line-height:1.6}.fit-final label{max-width:420px}.fit-unit{font:600 14px var(--font-mono);border:1px solid #b8c5c7;place-items:center;display:grid}.fit-candidate-chips{flex-wrap:wrap;gap:8px;margin:20px 0;display:flex}.fit-candidate-chips span{background:var(--technical);padding:9px 12px;font-size:12px}.fit-recommendations{border:1px solid var(--line);background:#edf5f2;margin-top:24px;padding:32px}.fit-recommendations article{border-left:3px solid var(--line);background:#fff;grid-template-columns:1.4fr 1fr auto;align-items:center;gap:22px;margin-top:14px;padding:24px;display:grid}.fit-recommendations article.primary{border-color:var(--accent)}.fit-recommendations article>div>span{font:600 10px var(--font-mono);color:var(--accent-dark);text-transform:uppercase}.fit-recommendations h3{font:750 25px var(--font-mono);margin:5px 0}.fit-recommendations p{color:var(--muted);margin:0;line-height:1.5}.fit-recommendations dl{grid-template-columns:repeat(3,1fr);gap:15px;margin:0;display:grid}.fit-recommendations dt{color:var(--muted);font-size:10px}.fit-recommendations dd{font:650 12px var(--font-mono);margin:5px 0 0}.fit-transfer{border:1px solid var(--accent);color:var(--accent-dark);padding:12px;font-weight:700}.press-follow-up{background:#fff7e8;border-left:3px solid #d69220;grid-column:1/-1;padding:14px!important}.press-follow-up p{margin:5px 0}.press-follow-up a{color:var(--accent-dark);text-decoration:underline}.fit-legal-note,.fit-assistant-sources{border:1px solid var(--line);background:#fff;margin-top:24px;padding:24px}.fit-legal-note{border-left:4px solid #d69220}.fit-legal-note p,.fit-assistant-sources p,.fit-assistant-sources li{color:var(--muted);line-height:1.65}.fit-assistant-sources{margin-bottom:70px}.fit-assistant-sources h2{margin:10px 0}.fit-assistant-sources a{color:var(--accent-dark);text-decoration:underline}@media (max-width:760px){.fit-choice-grid{grid-template-columns:1fr}.fit-question,.fit-final,.fit-recommendations{padding:22px}.fit-recommendations article{grid-template-columns:1fr}.fit-recommendations dl{grid-template-columns:1fr 1fr}.fit-assistant-status i{width:18px}}
.tolerance-stack-tool{border:1px solid var(--line);background:var(--white);grid-template-columns:minmax(0,1.18fr) minmax(360px,.82fr);display:grid}.stack-input-panel,.stack-results{padding:38px}.stack-results{background:var(--panel);border-left:1px solid var(--line)}.stack-help{color:var(--muted);margin:-8px 0 22px}.stack-table-wrap{overflow-x:auto}.stack-table{border-collapse:collapse;width:100%;min-width:900px}.stack-table th{text-align:left;color:var(--muted);padding:8px 5px;font-size:11px}.stack-table td{vertical-align:top;padding:5px}.stack-table input,.stack-table select,.stack-settings input,.stack-settings select{border:1px solid var(--line);width:100%;min-height:46px;font:600 14px var(--font-mono);background:#fff;padding:8px 10px}.stack-table td:first-child{width:90px}.stack-table td:nth-child(2){width:65px}.stack-table td:nth-child(3){width:150px}.stack-table td:nth-child(4){width:115px}.stack-table td:nth-child(5){width:230px}.stack-table td:nth-child(6){width:180px}.number-with-unit{display:flex}.number-with-unit span{border:1px solid var(--line);font:600 12px var(--font-mono);border-left:0;place-items:center;padding:0 9px;display:grid}.deviation-pair,.iso-pair,.distribution-fields{grid-template-columns:1fr 1fr;gap:5px;display:grid}.distribution-fields{grid-template-columns:1fr}.row-remove{min-height:46px;width:42px!important;color:var(--muted)!important;border:1px solid var(--line)!important;background:0 0!important;padding:0!important}.row-remove:disabled{opacity:.3}.stack-add{width:auto!important;color:var(--accent-dark)!important;border:1px solid var(--accent)!important;background:0 0!important;margin:14px 0 24px!important;padding:11px 16px!important}.stack-settings{border:1px solid var(--line);grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 22px;padding:18px;display:grid}.stack-settings legend{padding:0 8px;font-weight:750}.stack-settings label{font-size:12px}.stack-submit{justify-content:space-between;display:flex}.stack-primary{border-left:4px solid var(--accent);background:#fff;justify-content:space-between;align-items:baseline;gap:20px;padding:20px;display:flex}.stack-primary strong{font:700 22px var(--font-mono)}.method-cards{gap:10px;margin:20px 0;display:grid}.method-cards article{border:1px solid var(--line);background:#fff;padding:16px}.method-cards span,.method-cards small{color:var(--muted);display:block}.method-cards strong{font:700 15px var(--font-mono);margin:6px 0;display:block}.stack-histogram{border:1px solid var(--line);background:#fff;margin:20px 0;padding:14px}.stack-histogram figcaption{font-weight:700}.stack-histogram svg{width:100%;height:auto;display:block}.stack-histogram rect{fill:var(--accent)}.stack-histogram line{stroke:var(--ink)}.stack-histogram text{font:10px var(--font-mono);fill:var(--muted)}.stack-metrics{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.stack-metrics div{border-bottom:1px solid var(--line);padding:12px 0}.stack-metrics dt{color:var(--muted);font-size:11px}.stack-metrics dd{font:650 12px var(--font-mono);margin:5px 0}.stack-results details{margin:22px 0}.stack-results summary{cursor:pointer;font-weight:750}.resolved-table{border-collapse:collapse;width:100%;margin-top:12px;font-size:11px}.resolved-table th,.resolved-table td{text-align:left;border-bottom:1px solid var(--line);padding:8px 4px}.stack-results .warning{color:var(--muted);font-size:11px}@media (max-width:1100px){.tolerance-stack-tool{grid-template-columns:1fr}.stack-results{border-left:0;border-top:1px solid var(--line)}}@media (max-width:760px){.stack-input-panel,.stack-results{padding:22px}.stack-settings,.stack-metrics{grid-template-columns:1fr 1fr}.stack-primary{flex-direction:column;align-items:flex-start}}.stack-histogram rect{cursor:crosshair}.stack-histogram rect:hover{fill:var(--accent-dark)}.stack-histogram text{fill:var(--ink)!important;font-size:14px!important}.histogram-hover{z-index:5;background:var(--ink);font:600 12px/1.45 var(--font-mono);box-sizing:border-box;white-space:normal;overflow-wrap:anywhere;width:100%;max-width:100%;margin-top:8px;padding:8px 12px;position:relative;color:#fff!important;visibility:visible!important;opacity:1!important;display:block!important}