:root{font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#17323f;background:#f0f3f4;font-synthesis:none;--bore:#007f83;--shaft:#b86a25;--line:#dce4e7}*{box-sizing:border-box}body{margin:0}header{background:#112e3b;color:#fff;display:flex;justify-content:space-between;align-items:center;padding:22px max(24px,calc((100vw - 1200px)/2));gap:20px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;font-size:14px;line-height:1.25}.brand-icon{border:1px solid #728b95;border-radius:9px;padding:10px;font-size:20px;font-weight:750;letter-spacing:-1px}.brand strong{font-size:19px}.version{font-size:11px;letter-spacing:1.5px;color:#b8cbd3}main{max-width:1248px;margin:auto;padding:32px 24px}.intro{margin-bottom:28px}.eyebrow{font-size:11px;font-weight:750;letter-spacing:1.7px}.intro .eyebrow{color:#52707f}.intro h1{font-size:clamp(32px,5vw,46px);letter-spacing:-1.6px;margin:8px 0}.intro>p:last-child{color:#5a717d;margin:10px 0}.toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:20px}.segmented{display:flex;gap:4px;padding:4px;border-radius:12px;background:#e1e8eb}.segmented button{border:0;background:transparent;box-shadow:none;color:#47616e;flex:1;white-space:nowrap}.segmented button[aria-pressed=true]{background:#fff;color:#163b4b;box-shadow:0 1px 4px #132d3c15}.small{border-radius:9px}.small button{font-size:12px;padding:10px;white-space:normal}button,input,select{font:inherit}button{min-height:44px;border:1px solid #c6d3da;border-radius:8px;background:#fff;color:#234859;padding:10px 15px;cursor:pointer;font-size:13px;font-weight:650;touch-action:manipulation}button:hover{background:#f0f6f7}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid #49a7c5;outline-offset:3px}input,select{width:100%;min-width:0;min-height:48px;border:1px solid #becdd4;background:#fff;color:#163542;padding:11px 12px;border-radius:8px;font-size:16px}input:disabled,select:disabled{color:#526873;background:#f1f4f5;opacity:1}label{display:block;font-size:12px;font-weight:650;color:#46616e}label input,label select{margin-top:8px}label.units{display:flex;align-items:center;gap:10px}.units select{margin:0;width:auto;font-size:13px;min-height:44px}.workspace{display:grid;grid-template-columns:365px minmax(0,1fr);align-items:start;gap:24px}.panel{border:1px solid var(--line);border-radius:15px;background:white;padding:24px}.panel-heading{display:flex;align-items:center;gap:12px;margin-bottom:24px}.step{font-size:11px;padding:7px;border-radius:6px;background:#ecf2f4;color:#657b86}h2{font-size:17px;letter-spacing:-.3px;margin:0}h3{font-size:16px;margin:0 0 18px;display:flex;align-items:center;gap:8px}.component{padding-top:24px;margin-top:22px;border-top:1px solid var(--line)}.component-symbol{margin-left:auto;font-family:Georgia,serif;font-style:italic;color:#8ca0a9}.dot{width:9px;height:9px;border-radius:50%;display:inline-block}.bore{background:var(--bore)}.shaft{background:var(--shaft)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.unit-label{float:right;color:#7a8c96}.hint{font-size:12px;color:#627985;line-height:1.6}.check{display:flex;gap:8px;align-items:center;margin-top:18px;font-size:13px;min-height:44px}.check input{width:20px;min-height:20px;height:20px;margin:0;accent-color:var(--bore)}#preset-label{margin-top:18px}#preset{font-size:14px}.fit-card{padding:25px;border-radius:15px;background:#112e3b;color:#fff}.fit-top{display:flex;justify-content:space-between;align-items:center}.fit-top .eyebrow{color:#b5cdd6}#fit-badge{font-size:10px;letter-spacing:1px;background:#214c58;color:#a9e4d8;padding:7px 10px;border-radius:20px}.fit-card h2{font-size:29px;margin:14px 0 24px;letter-spacing:-.8px}.clearances{display:grid;grid-template-columns:1fr 1fr;gap:22px}.clearances span{display:block;color:#b9cdd6;font-size:12px;margin-bottom:8px}.clearances strong{font-size:24px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.5px;overflow-wrap:anywhere}.clearances strong small{font-size:13px;font-weight:400;letter-spacing:0}.fit-card p{font-size:12px;line-height:1.6;color:#c3d8df;margin:18px 0 0}#unequal{color:#ffd7a2}.diagram-panel,.limits-panel{margin-top:20px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}#diagram{width:100%;height:auto;display:block;overflow:visible}#diagram text{font-family:ui-sans-serif,system-ui,sans-serif;fill:#516b78;font-size:13px}#diagram .bore-zone{fill:#ccebea;stroke:var(--bore);stroke-width:2}#diagram .shaft-zone{fill:#f7e7d8;stroke:var(--shaft);stroke-width:2}#diagram .axis{stroke:#cfdbdf;stroke-width:1}#diagram .basic{stroke:#78949f;stroke-dasharray:5 4}#diagram .zone-name{font-weight:700;fill:#1e414f}.precision{display:flex;align-items:center;gap:8px}.precision select{margin:0;min-height:36px;font-size:12px;padding:7px;width:62px}.limit-table{width:100%;border-collapse:collapse;font-size:13px;table-layout:fixed}.limit-table th{text-align:right;padding:12px 0;border-bottom:2px solid var(--line);font-size:13px}.limit-table th:first-child{width:40%;text-align:left;font-size:11px;color:#67808d;font-weight:500}.limit-table td{text-align:right;border-bottom:1px solid #edf1f3;padding:12px 0;vertical-align:top;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.limit-table td:first-child{text-align:left;color:#5b7480;padding-right:6px;font-size:12px}.limit-table tr.actual td{font-weight:700;color:#1e414f;background:#f6f9fa}.limit-table .sub{display:block;font-size:10px;color:#6c818b;font-weight:400;margin-top:3px}.save-panel{margin-top:24px;display:flex;justify-content:space-between;gap:24px;align-items:center}.save-panel .hint{margin-bottom:0}.save-controls{display:flex;gap:8px;flex-wrap:wrap;max-width:580px}.save-controls input{width:100%}.primary{background:#0b7378;color:#fff;border-color:#0b7378}.primary:hover{background:#095d62}.status{font-size:13px;line-height:1.5;color:#315d68;min-height:20px}.saved-panel{margin-top:14px}.actions{display:flex;gap:8px}.actions button{font-size:12px}.saved-tabs{max-width:300px;margin-bottom:12px}.saved-item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 0;border-top:1px solid var(--line)}.saved-item h3{margin:0 0 5px;font-size:14px;overflow-wrap:anywhere;display:block}.saved-item p{font-size:12px;color:#657d89;margin:0;line-height:1.6}.saved-item>div:first-child{min-width:0}.saved-item .actions{flex-wrap:wrap}.saved-item .actions button{padding:8px 10px}.empty{font-size:13px;color:#6f8490;padding:20px 0}.explanations{margin-top:16px;font-size:13px;line-height:1.7}.explanations summary{font-weight:650;cursor:pointer;min-height:24px}.explanations a{color:#006f78}footer{display:flex;justify-content:space-between;gap:16px;color:#758a96;font-size:11px;line-height:1.6;padding:30px 0 0}.error{padding:24px;border:1px solid #eabca6;border-radius:12px;color:#8b3d20;background:#fff7f2;line-height:1.6;font-size:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}
@media(max-width:800px){main{padding:24px 16px}.workspace{grid-template-columns:1fr;gap:20px}.inputs{padding:20px}.toolbar{flex-wrap:wrap}.toolbar>.segmented{width:100%}.units{margin-left:auto}.save-panel{display:block}.save-controls{margin-top:18px;max-width:none}.version{font-size:9px;max-width:90px;line-height:1.6;text-align:right}.panel{padding:20px}.clearances strong{font-size:23px}.saved-item{align-items:flex-start;flex-direction:column}.saved-item .actions{width:100%}.saved-item .actions button{flex:1}.section-title{flex-wrap:wrap}.saved-panel>.section-title{align-items:flex-start}footer{flex-direction:column;gap:6px}header{padding:18px 20px}.intro{margin-bottom:22px}.limit-table{font-size:12px}.limit-table th:first-child{width:34%}.fit-card{padding:22px}.clearances{gap:14px}.precision select{min-height:44px}.small button{font-size:13px}}
@media print{@page{margin:14mm}body{background:white;color:black}header{padding:0;background:white;color:black;border-bottom:1px solid #999;padding-bottom:12px}.version{color:black}.intro{margin:12px 0}.intro h1{font-size:25px}.intro p{display:none}main{padding:12px 0;max-width:none}.toolbar,.inputs,.save-panel,.saved-panel,.explanations,.status,.precision,footer{display:none!important}.workspace{display:block}.fit-card{background:white;color:black;border:1px solid #999;padding:16px;break-inside:avoid}.fit-card h2{font-size:24px;margin:10px 0}.fit-card p,.fit-top .eyebrow,.clearances span,#unequal{color:black}#fit-badge{color:black;background:#eee}.panel{border-color:#ccc;break-inside:avoid;padding:16px}.clearances strong{font-size:22px}.diagram-panel{max-height:280px}#diagram{max-height:190px}.limits-panel{margin-top:12px}.limit-table td{padding:8px 0}a{color:black} }
.print-only{display:none}@media print{.print-only{display:block;font-size:12px}}
.tool-tabs{display:flex;gap:8px;margin-bottom:24px;border-bottom:1px solid #c6d5db;padding-bottom:14px}.tool-tabs button[aria-pressed=true]{background:#163b4b;color:#fff;border-color:#163b4b}.new-tag{font-size:9px;margin-left:5px;letter-spacing:1px}.finder-inputs>label{margin-top:18px}.finder-step{padding-top:24px;border-top:1px solid var(--line);margin:24px 0 0}.known-summary{background:#eef7f6;border-left:3px solid var(--bore);border-radius:6px;padding:14px;margin-top:20px;font-size:13px;line-height:1.7}.known-summary strong{display:block;color:#1e5357}.finder-advanced{border-top:1px solid var(--line);padding-top:16px;margin:18px 0}.finder-advanced summary{min-height:44px;font-size:14px;font-weight:650;cursor:pointer}.finder-advanced label{margin-top:16px}.finder-advanced h3{font-size:14px;margin:24px 0 0}.full-width{width:100%;margin-top:12px}.finder-controls .check{margin-top:10px}.finder-controls>label>select{font-size:14px}.finder-results{min-width:0}.finder-card{margin-top:14px}.finder-card h3{margin:0;font-size:21px}.finder-card .section-title{align-items:flex-start;margin-bottom:10px}.finder-badge{font-size:11px;border-radius:5px;padding:6px 8px;background:#edf3f5;color:#42616e;line-height:1.4}.finder-badge.common{background:#dff1ec;color:#256453}.finder-classification{font-size:13px;font-weight:650;color:#0b7378;margin:10px 0 16px}.finder-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0 16px}.finder-metrics dt{font-size:11px;color:#617b88;line-height:1.4}.finder-metrics dd{margin:5px 0 0;font-size:17px;font-weight:650;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.finder-card .actions{align-items:center;flex-wrap:wrap;margin-top:18px}.finder-card .check{margin:0 0 0 auto}.finder-card .hint{margin:6px 0}.finder-count{font-weight:650}.zone-diagram{width:100%;height:auto;display:block}.zone-diagram text{font-family:ui-sans-serif,system-ui,sans-serif;fill:#516b78;font-size:12px}.zone-diagram .bore-zone{fill:#ccebea;stroke:var(--bore);stroke-width:2}.zone-diagram .shaft-zone{fill:#f7e7d8;stroke:var(--shaft);stroke-width:2}.zone-diagram .axis{stroke:#cfdbdf}.zone-diagram .basic{stroke:#78949f;stroke-dasharray:5 4}.zone-diagram .zone-name{font-weight:700;fill:#1e414f}#ff-compare{margin:14px 0}#ff-comparison-list>article{border-top:1px solid var(--line);padding:16px 0}#ff-comparison-list h3{margin:0;font-size:14px}#ff-comparison-list p{font-size:12px;line-height:1.7}.finder-controls select{white-space:normal;text-overflow:ellipsis}#ff-status:empty{display:none}
@media(max-width:800px){.tool-tabs button{flex:1;font-size:13px;padding:10px}.tool-tabs .new-tag{display:none}.finder-card .check{width:100%;margin-top:3px}.finder-card .actions button{flex:1}.finder-card{padding:18px}.finder-metrics dd{font-size:16px}.finder-badge{max-width:145px}.finder-card h3{font-size:19px}}
@media print{.tool-tabs,#finder-tool{display:none!important}#calculator-tool{display:block!important}}

.assembly-section{margin-top:24px}.assembly-section details{margin:16px 0;padding:16px;border:1px solid #d5dfe1;border-radius:12px}.assembly-section summary{cursor:pointer;font-weight:650;min-height:30px}.assembly-section input,.assembly-section select{max-width:100%}.assembly-card{padding:16px;border-left:4px solid #167b80;background:#f0f6f5;border-radius:8px;margin:12px 0}.assembly-card p{line-height:1.6;overflow-wrap:anywhere}.assembly-section .actions{margin-top:20px}
@media print{.assembly-section{break-before:page}.assembly-section .actions{display:none}.assembly-section details{display:block}.assembly-section input,.assembly-section select{border:0;background:white;color:black}.assembly-card{break-inside:avoid}.assembly-section:has(>label>input:not(:checked)){display:none}}

@media print{.assembly-section{break-inside:auto}.assembly-section details{break-inside:avoid}}