@layer mc-foundation{:root{color-scheme:light;--mc-color-canvas:#f5f7f9;--mc-color-surface:#fff;--mc-color-surface-subtle:#edf2f6;--mc-color-text:#102a43;--mc-color-text-muted:#526579;--mc-color-border:#d4dde5;--mc-color-border-strong:#98aabb;--mc-color-primary:#0868b2;--mc-color-primary-hover:#05518c;--mc-color-primary-soft:#e8f3fb;--mc-color-copper:#ad531f;--mc-color-copper-soft:#fff1e8;--mc-color-result:#102f4c;--mc-color-result-muted:#c8d8e5;--mc-color-error:#a62b22;--mc-color-error-soft:#fff0ee;--mc-color-success:#17633b;--mc-color-focus:#075ea8;--mc-shadow-panel:0 1px 2px #102a4314, 0 12px 28px #102a4312;--mc-shadow-raised:0 18px 50px #102a431a;--mc-radius-sm:.4rem;--mc-radius-md:.7rem;--mc-radius-lg:.95rem;--mc-space-1:.25rem;--mc-space-2:.5rem;--mc-space-3:.75rem;--mc-space-4:1rem;--mc-space-5:1.25rem;--mc-space-6:1.5rem;--mc-space-8:2rem;--mc-space-10:2.5rem;--mc-space-12:3rem;--mc-space-16:4rem;--mc-max-width:72rem;--mc-font-sans:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", "Noto Sans Arabic", "Noto Sans JP", Arial, sans-serif;--mc-font-numeric:"SFMono-Regular", "Roboto Mono", Consolas, "Liberation Mono", ui-monospace, monospace;--ink:var(--mc-color-text);--muted:var(--mc-color-text-muted);--line:var(--mc-color-border);--panel:var(--mc-color-surface-subtle);--accent:var(--mc-color-primary);--accent-dark:var(--mc-color-primary-hover);--max:var(--mc-max-width)}*,:before,:after{box-sizing:border-box}html{background:var(--mc-color-canvas);color:var(--mc-color-text);font-family:var(--mc-font-sans);text-size-adjust:100%;line-height:1.55}body{background:var(--mc-color-canvas);min-inline-size:20rem;margin:0}button,input,select,textarea,summary{min-block-size:44px;font:inherit}button,summary,select{cursor:pointer}:focus-visible{outline:3px solid var(--mc-color-focus);outline-offset:3px;box-shadow:0 0 0 5px var(--mc-color-surface)}::selection{background:var(--mc-color-primary-soft);color:var(--mc-color-text)}a{color:var(--mc-color-primary);text-underline-offset:.16em}a:hover{color:var(--mc-color-primary-hover)}h1,h2,h3,p{overflow-wrap:anywhere}h1{letter-spacing:-.035em;margin:0;font-size:clamp(2rem,5vw,3.7rem);line-height:1.04}h2,h3{margin-block-start:0;line-height:1.2}code,pre,output,.result-layer__value{font-family:var(--mc-font-numeric);font-variant-numeric:tabular-nums lining-nums}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;block-size:1px;inline-size:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.site-header,footer,main{inline-size:min(calc(100% - 2rem), var(--mc-max-width));margin-inline:auto}.site-header{justify-content:space-between;align-items:center;gap:var(--mc-space-6);border-block-end:1px solid var(--mc-color-border);min-block-size:4.5rem;display:flex}.brand{color:var(--mc-color-text);letter-spacing:-.015em;font-size:1.05rem;font-weight:800;text-decoration:none}nav{gap:var(--mc-space-5);flex-wrap:wrap;display:flex}nav a{color:var(--mc-color-text-muted);font-weight:650;text-decoration:none}main{min-block-size:70vh}footer{border-block-start:1px solid var(--mc-color-border);color:var(--mc-color-text-muted);margin-block-start:4rem;padding-block:1.75rem 3rem;font-size:.9rem}.hero{max-inline-size:52rem;padding-block:clamp(3rem,8vw,5rem) 2.75rem}.eyebrow{margin:0 0 var(--mc-space-2);color:var(--mc-color-primary);letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;font-weight:800}.lede{max-inline-size:68ch;color:var(--mc-color-text-muted);font-size:1.12rem}.tool-grid{gap:var(--mc-space-5);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.tool-card{padding:var(--mc-space-6);border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-md);background:var(--mc-color-surface);color:var(--mc-color-text);text-decoration:none;transition:border-color .16s,box-shadow .16s,transform .16s;box-shadow:0 1px 2px #101f2c0d}.tool-card:hover{border-color:var(--mc-color-primary);box-shadow:var(--mc-shadow-panel);transform:translateY(-2px)}.tool-card p{color:var(--mc-color-text-muted);margin-block-end:0}.tool-page{padding-block:clamp(2.5rem,6vw,4rem)}.tool-page__intro{max-inline-size:48rem;margin-block-end:var(--mc-space-8)}.button{justify-content:center;align-items:center;gap:var(--mc-space-2);border-radius:var(--mc-radius-sm);text-align:center;border:1px solid #0000;min-block-size:44px;padding:.65rem 1rem;font-weight:760;line-height:1.2;text-decoration:none;display:inline-flex}.button:disabled{cursor:not-allowed;opacity:.52}.button--primary,.button:not([class*=button--]){background:var(--mc-color-primary);color:#fff}.button--primary:hover:not(:disabled),.button:not([class*=button--]):hover:not(:disabled){background:var(--mc-color-primary-hover)}.button--secondary{border-color:var(--mc-color-border-strong);background:var(--mc-color-surface);color:var(--mc-color-text)}.button--secondary:hover:not(:disabled),.button--quiet:hover:not(:disabled){border-color:var(--mc-color-primary);background:var(--mc-color-primary-soft);color:var(--mc-color-primary-hover)}.button--quiet,.text-button{color:var(--mc-color-primary);background:0 0;border-color:#0000}.text-button{min-block-size:44px;padding-inline:var(--mc-space-2);font:inherit;border:0;font-weight:700}@media (width<=48rem){.site-header{flex-direction:column;align-items:flex-start;padding-block:1rem}.tool-grid{grid-template-columns:1fr}.hero{padding-block-start:3rem}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.calculator-workbench{gap:var(--mc-space-6);border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-lg);background:var(--mc-color-surface-subtle);box-shadow:var(--mc-shadow-panel);grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);padding:clamp(1rem,3vw,1.75rem);display:grid}.calculator-workbench__input,.calculator-workbench__output{border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-md);background:var(--mc-color-surface);min-inline-size:0;padding:clamp(1rem,2.5vw,1.5rem)}.calculator-workbench__input{align-self:start}.calculator-workbench__output{align-content:start;gap:var(--mc-space-5);display:grid}.calculator-workbench__examples{grid-column:1/-1;min-inline-size:0}.unit-switch{min-inline-size:0;margin:0 0 var(--mc-space-6);border:0;padding:0}.unit-switch legend{margin-block-end:var(--mc-space-2);font-size:.9rem;font-weight:760}.segmented-control{border:1px solid var(--mc-color-border-strong);border-radius:var(--mc-radius-sm);background:var(--mc-color-surface-subtle);grid-template-columns:repeat(2,minmax(0,1fr));padding:.2rem;display:grid}.segmented-control label{min-inline-size:0;position:relative}.segmented-control input{opacity:0;block-size:1px;inline-size:1px;margin:0;position:absolute}.segmented-control span{block-size:100%;min-block-size:44px;padding:var(--mc-space-2) var(--mc-space-3);border-radius:calc(var(--mc-radius-sm) - .15rem);color:var(--mc-color-text-muted);text-align:center;text-wrap:balance;cursor:pointer;justify-content:center;align-items:center;font-size:clamp(.82rem,.78rem + .12vw,.9rem);font-weight:760;line-height:1.3;display:flex}.segmented-control label:hover input:not(:checked)+span{background:var(--mc-color-primary-soft);color:var(--mc-color-primary-hover)}.segmented-control input:checked+span{background:var(--mc-color-surface);color:var(--mc-color-primary-hover);box-shadow:0 1px 3px #101f2c24}.segmented-control input:focus-visible+span{outline:3px solid var(--mc-color-focus);outline-offset:2px;box-shadow:0 0 0 4px var(--mc-color-surface)}.calculator-fields{gap:var(--mc-space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.calculator-field{align-content:start;gap:var(--mc-space-2);min-inline-size:0;display:grid}.calculator-field[hidden]{display:none}.calculator-field--precision{margin-block-start:0}.calculator-field__label-row{justify-content:space-between;align-items:baseline;gap:var(--mc-space-2);display:flex}.calculator-field label,.calculator-field--precision>label{color:var(--mc-color-text);font-size:.92rem;font-weight:760}.calculator-field__unit{color:var(--mc-color-text-muted);font-family:var(--mc-font-numeric);font-variant-numeric:tabular-nums;unicode-bidi:isolate;font-size:.78rem}.calculator-field input,.calculator-field select,.calculator-field--precision select,.field input,.field select{border:1px solid var(--mc-color-border-strong);border-radius:var(--mc-radius-sm);background:var(--mc-color-surface);min-block-size:44px;inline-size:100%;min-inline-size:0;color:var(--mc-color-text);font:inherit;padding:.6rem .72rem}.calculator-field input[data-numeric-input]{font-family:var(--mc-font-numeric);font-variant-numeric:tabular-nums}.calculator-field input:hover,.calculator-field select:hover,.field input:hover,.field select:hover{border-color:var(--mc-color-primary)}.calculator-field [aria-invalid=true]{border-color:var(--mc-color-error);background:var(--mc-color-error-soft)}.calculator-field__hint,.calculator-field__error{min-block-size:1.2em;margin:0;font-size:.8rem;line-height:1.35}.calculator-field__hint{color:var(--mc-color-text-muted)}.calculator-field__error{color:var(--mc-color-error);font-weight:700}.advanced-fields{border-block:1px solid var(--mc-color-border);margin-block-start:var(--mc-space-5)}.advanced-fields>summary{min-block-size:44px;color:var(--mc-color-primary);align-items:center;font-weight:760;display:flex}.advanced-fields[open]>summary{margin-block-end:var(--mc-space-4)}.calculator-submit{inline-size:100%;margin-block-start:var(--mc-space-6)}.calculator-results h2,.calculator-history h2{margin:0;font-size:1.05rem}.calculator-results__heading-row,.calculator-history__heading-row{justify-content:space-between;align-items:center;gap:var(--mc-space-3);display:flex}.calculator-results__empty,[data-history-empty]{color:var(--mc-color-text-muted)}.calculator-results__error{margin:var(--mc-space-3) 0 0;padding:var(--mc-space-3) var(--mc-space-4);border:1px solid var(--mc-color-error);border-radius:var(--mc-radius-sm);background:var(--mc-color-error-soft);color:var(--mc-color-error);font-weight:700}.calculator-results__success{margin:var(--mc-space-3) 0 0;padding:var(--mc-space-3) var(--mc-space-4);border:1px solid var(--mc-color-success);border-radius:var(--mc-radius-sm);background:var(--mc-color-success-soft);color:var(--mc-color-success);font-weight:700}.result-layers,.calculator-history ol{gap:var(--mc-space-3);margin:var(--mc-space-4) 0 0;padding:0;list-style:none;display:grid}.result-layer{gap:var(--mc-space-1);min-inline-size:0;padding:var(--mc-space-4) var(--mc-space-5);border:1px solid var(--mc-color-border);border-inline-start:.28rem solid var(--mc-color-primary);border-radius:var(--mc-radius-sm);background:var(--mc-color-canvas);display:grid}.result-layer--nominal{border-inline-start-color:var(--mc-color-copper);background:var(--mc-color-copper-soft)}.result-layer--measured,.result-layer--approved{border-inline-start-color:var(--mc-color-success)}.result-layer--commercial{border-inline-start-color:var(--mc-color-text-muted)}.result-layer--conversion{border-inline-start-color:var(--mc-color-border-strong);background:var(--mc-color-surface)}.result-layer__label{color:var(--mc-color-text-muted);letter-spacing:.025em;font-size:.8rem;font-weight:760}.result-layer__value{max-inline-size:100%;color:var(--mc-color-text);overflow-wrap:anywhere;unicode-bidi:isolate;font-size:clamp(1.35rem,4vw,2rem);font-weight:780;line-height:1.15}.result-layer__note{margin:var(--mc-space-1) 0 0;color:var(--mc-color-text-muted);font-size:.82rem}.raw-result{margin-block-start:var(--mc-space-4)}.raw-result summary{color:var(--mc-color-primary);cursor:pointer;font-weight:700}.raw-result__list{max-inline-size:100%;margin:var(--mc-space-3) 0 0;border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-sm);background:var(--mc-color-surface);display:grid;overflow:hidden}.raw-result__row{align-items:baseline;gap:var(--mc-space-2) var(--mc-space-3);padding:var(--mc-space-3);grid-template-columns:minmax(0,1fr) minmax(0,auto);display:grid}.raw-result__row+.raw-result__row{border-block-start:1px solid var(--mc-color-border)}.raw-result__label,.raw-result__value{margin:0}.raw-result__label{color:var(--mc-color-text-muted);font-size:.82rem;font-weight:650}.raw-result__value{min-inline-size:0;color:var(--mc-color-text);font-family:var(--mc-font-numeric);overflow-wrap:anywhere;text-align:end;unicode-bidi:isolate;font-size:.82rem}.calculator-actions{gap:var(--mc-space-2);padding-block:var(--mc-space-4);border-block:1px solid var(--mc-color-border);flex-wrap:wrap;display:flex}.calculator-actions .button{flex:8rem}.calculator-actions__share-fallback{flex:1 0 100%;min-inline-size:0}.calculator-actions__feedback{padding:var(--mc-space-2) var(--mc-space-3);border-radius:var(--mc-radius-sm);background:var(--mc-color-success-soft);color:var(--mc-color-success);text-align:center;flex:1 0 100%;margin:0;font-size:.82rem;font-weight:760}.calculator-actions__share-fallback label{gap:var(--mc-space-2);color:var(--mc-color-text);font-size:.82rem;font-weight:700;display:grid}.calculator-actions__share-fallback input{inline-size:100%;min-inline-size:0;font-family:var(--mc-font-numeric)}.calculator-history__heading-row{border-block-end:1px solid var(--mc-color-border)}.history-item{min-block-size:44px;inline-size:100%;padding:var(--mc-space-2) var(--mc-space-3);border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-sm);background:var(--mc-color-surface);color:var(--mc-color-text);text-align:start}.history-item__result,.history-item__meta{display:block}.history-item__result{font-family:var(--mc-font-numeric);font-variant-numeric:tabular-nums;font-size:.95rem;font-weight:780}.history-item__meta{color:var(--mc-color-text-muted);margin-block-start:.2rem;font-size:.75rem}.history-item:hover{border-color:var(--mc-color-primary);background:var(--mc-color-primary-soft)}.calculator{border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-lg);background:var(--mc-color-surface-subtle);padding:clamp(1.25rem,4vw,2.25rem)}.calculator-grid{gap:var(--mc-space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.field{gap:var(--mc-space-2);min-inline-size:0;display:grid}.field label{font-weight:760}.field small{color:var(--mc-color-text-muted)}.field--wide,.result{grid-column:1/-1}.result{padding:var(--mc-space-5);border-inline-start:.28rem solid var(--mc-color-primary);background:var(--mc-color-surface)}.result output{font-size:1.45rem;font-weight:780;display:block}.result [data-error]{color:var(--mc-color-error);font-weight:700}@media (width<=48rem){.segmented-control{grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr)}.calculator-workbench,.calculator-fields,.calculator-grid{grid-template-columns:1fr}.calculator-workbench{gap:var(--mc-space-4);padding:var(--mc-space-3)}.calculator-workbench__input,.calculator-workbench__output{padding:var(--mc-space-4)}.calculator-workbench__examples,.field--wide,.result{grid-column:1}}.engineering-panel,.content-panel,.formula-note{border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-md);background:var(--mc-color-surface);min-inline-size:0;padding:clamp(1rem,3vw,1.5rem)}.engineering-panel--accent{border-block-start:.22rem solid var(--mc-color-primary)}.engineering-panel--quiet{background:var(--mc-color-surface-subtle)}.engineering-panel__heading,.content-panel h2,.formula-note h2{margin-block-end:var(--mc-space-4);font-size:1.15rem}.status-badge{border:1px solid var(--mc-color-border);background:var(--mc-color-canvas);min-block-size:1.75rem;color:var(--mc-color-text-muted);border-radius:999px;align-items:center;padding-inline:.6rem;font-size:.75rem;font-weight:760;display:inline-flex}.status-badge--theoretical{background:var(--mc-color-primary-soft);color:var(--mc-color-primary-hover);border-color:#8eb9dc}.status-badge--nominal{background:var(--mc-color-copper-soft);color:#793515;border-color:#d99a75}.status-badge--measured,.status-badge--approved{color:var(--mc-color-success);background:#eaf6ef;border-color:#7eb597}.formula-panel,.source-panel,.limitations-panel,.example-library{margin-block-start:var(--mc-space-6)}.formula-panel__list{gap:var(--mc-space-2);display:grid}.formula-panel__list p,.formula-panel__substitution{padding:var(--mc-space-3) var(--mc-space-4);border-inline-start:.22rem solid var(--mc-color-primary);background:var(--mc-color-canvas);font-family:var(--mc-font-numeric);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0}.formula-panel bdi{unicode-bidi:isolate}.formula-panel__substitution{border-inline-start-color:var(--mc-color-copper);margin-block-start:var(--mc-space-3)}.formula-panel__substitution strong{font-family:var(--mc-font-sans);margin-block-end:var(--mc-space-1);display:block}.source-list{gap:var(--mc-space-4);margin:0;padding-inline-start:1.4rem;display:grid}.source-list>li{padding-inline-start:var(--mc-space-2)}.source-list__title{margin:0 0 var(--mc-space-2);font-weight:760}.source-list dl{gap:var(--mc-space-1);color:var(--mc-color-text-muted);margin:0;font-size:.85rem;display:grid}.source-list dl>div{gap:var(--mc-space-3);grid-template-columns:minmax(6rem,.35fr) minmax(0,1fr);display:grid}.source-list dt{font-weight:760}.source-list dd{overflow-wrap:anywhere;min-inline-size:0;margin:0}.limitations-panel{border-inline-start:.28rem solid var(--mc-color-copper);background:var(--mc-color-copper-soft)}.limitations-panel ul{margin-block-end:0;padding-inline-start:1.25rem}.example-library__grid{gap:var(--mc-space-4);grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));display:grid}.example-card{min-inline-size:0;padding:var(--mc-space-5);border:1px solid var(--mc-color-border);border-radius:var(--mc-radius-md);background:var(--mc-color-surface);flex-direction:column;align-items:flex-start;display:flex}.example-card h3{margin-block-end:var(--mc-space-2);font-size:1rem}.example-card p{color:var(--mc-color-text-muted);flex:1;margin-block-start:0;font-size:.9rem}@media (width<=30rem){.source-list dl>div{grid-template-columns:1fr;gap:0}}}[hidden]{display:none!important}