:root{color-scheme:light;--ink:var(--site-ink);--muted:var(--site-muted);--line:var(--site-line);--blue:var(--site-blue);--navy:var(--site-ink);--paper:var(--site-surface);--wash:var(--site-panel)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--site-background);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:var(--blue);text-underline-offset:3px}a:hover{color:#0e466a}a:focus-visible{outline:3px solid #edb645;outline-offset:4px}.skip-link{position:absolute;top:-80px;left:16px;padding:8px 16px;background:#fff;z-index:2}.skip-link:focus{top:10px}.about-header,main,footer{width:min(1160px,calc(100% - 48px));margin:auto}.about-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:23px 0;border-bottom:1px solid var(--line)}.about-brand{font-size:26px;font-weight:800;letter-spacing:-1px;color:var(--ink);text-decoration:none}.about-brand span{color:var(--blue)}.about-header nav{display:flex;gap:24px;font-size:14px}.about-header nav a{text-decoration:none}.about-breadcrumb{display:flex;gap:12px;align-items:center;padding:22px 0;font-size:13px;color:var(--muted)}.about-hero{display:grid;grid-template-columns:1.25fr 1fr;gap:50px;align-items:center;padding:25px 0 48px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:11px;font-weight:750;color:var(--blue);margin:0 0 12px}h1{font-family:var(--site-headline-family);font-size:var(--site-headline-size);font-weight:700;letter-spacing:-.4px;line-height:1.08;margin:0 0 10px}h2{font-size:27px;letter-spacing:-.025em;line-height:1.25;margin:0 0 18px}h3{font-size:17px;line-height:1.35;margin:0 0 10px}.about-subtitle{font-size:clamp(16px,1.4vw,20px);line-height:1.25;color:var(--navy);margin:0 0 24px}.about-intro{font-size:17px;max-width:660px;color:var(--muted)}.about-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}.button{display:inline-flex;gap:12px;align-items:center;justify-content:center;padding:11px 18px;border:1px solid transparent;border-radius:5px;font-weight:650;font-size:14px;text-decoration:none;line-height:1.35}.primary{color:#fff;background:var(--blue);border-color:var(--blue)}.primary:hover{background:#24516d;color:#fff}.secondary{color:var(--navy);border-color:#afc2cf;background:#fff}.secondary:hover{background:#edf5f9}.access-note{font-size:12px;line-height:1.5;max-width:490px;color:var(--muted);margin:14px 0 0}.about-model{margin:0;background:var(--wash);color:var(--blue);border:1px solid var(--line);border-radius:8px;padding:20px 20px 15px}.about-model svg{width:100%;display:block}.about-model figcaption{font-size:11px;text-align:center;color:var(--muted)}.about-sections{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:30px;flex-wrap:wrap;padding:17px 0;font-size:14px}.about-sections a{text-decoration:none}.about-section{padding:50px 0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}.feature-card{padding:22px 24px;border-top:3px solid #81afc8;background:var(--wash);border-radius:0 0 5px 5px}.feature-card p,.example-card p{font-size:14px;color:var(--muted);margin:0}.example-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}.example-card{border:1px solid var(--line);border-radius:6px;padding:23px}.example-number{display:block;color:var(--blue);font-size:13px;font-weight:750;letter-spacing:.1em;margin-bottom:20px}.example-card a{display:inline-block;margin-top:20px;font-size:13px}.resources{display:grid;grid-template-columns:1fr 1fr;gap:50px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.resources p{font-size:15px;color:var(--muted)}.resources ul{list-style:none;padding:8px 0 0;margin:0}.resources li{padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}.about-limits{margin-top:42px;padding:23px 28px;background:#f7f4eb;border-left:3px solid #b29653}.about-limits h2{font-size:17px;margin-bottom:10px}.about-limits p{font-size:14px;margin:0;color:#59594d}.related-links{display:flex;gap:16px;flex-wrap:wrap}.related-links a{display:inline-flex;gap:16px;padding:12px 18px;border:1px solid var(--line);border-radius:4px;text-decoration:none;font-size:14px}.about-final{padding:36px;background:var(--wash);border-radius:7px;margin-bottom:55px}.about-final p{font-size:15px;color:var(--muted)}footer{border-top:1px solid var(--line);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px 25px;color:var(--muted);font-size:12px}footer span{flex:1}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* The homepage and public guides share the same canvas, hero surface and H1. */
html.theme-night{color-scheme:dark}
.about-hero{background:var(--paper);border:1px solid var(--site-hero-line);border-radius:22px;box-shadow:-6px 8px 0 var(--site-hero-shadow);padding:24px 52px;margin-bottom:32px}
a:hover{color:var(--ink)}
.secondary{background:var(--paper);border-color:var(--line)}
.secondary:hover{background:var(--wash)}
html.theme-night .primary{color:#07131e}
html.theme-night .primary:hover{background:#afd6ff;border-color:#afd6ff;color:#07131e}
html.theme-night .guide-checks,html.theme-night .about-limits{background:var(--wash)}
html.theme-night .about-limits p{color:var(--muted)}

/* Match the homepage icons at half the previous illustration width. */
.about-model-icon{width:50%;justify-self:center;padding:20px}.about-model-icon svg{width:100%;max-width:200px;margin:auto}

/* The public introduction and full application guide share one page. */
.about-guide{border-top:1px solid var(--line)}
.guide-intro{max-width:76ch;color:var(--muted);margin-bottom:30px}
.guide-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:44px;align-items:start}
.guide-contents{position:sticky;top:24px;display:flex;flex-direction:column;gap:3px;padding:18px;background:var(--wash);border:1px solid var(--line);border-radius:5px;max-height:calc(100vh - 48px);overflow-y:auto;font-size:13px;line-height:1.45}
.guide-contents strong{margin-bottom:10px;color:var(--ink)}
.guide-contents a{display:block;padding:5px 0;text-decoration:none}
.guide-contents a:hover{text-decoration:underline}
.guide-topic{border-bottom:1px solid var(--line);padding:0 0 28px;margin:0 0 30px;scroll-margin-top:24px;overflow-wrap:anywhere}
.guide-topic:last-child{border:0;margin:0}
.guide-topic p,.guide-topic li,.guide-topic dd,.guide-topic .note,.guide-topic .info-help{font-size:15px;line-height:1.7}
.guide-topic p{margin:0 0 14px}
.guide-topic li{margin-bottom:8px;padding-left:3px}
.guide-topic ol,.guide-topic ul{padding-left:24px}
.guide-topic .note,.guide-topic .info-help,.guide-topic aside{padding:16px 20px;margin:16px 0;background:var(--wash);border-left:3px solid #81afc8;border-radius:3px}
.guide-topic dl{display:grid;grid-template-columns:minmax(110px,1fr) 3fr;gap:10px 20px}
.guide-topic dt{font-weight:650}.guide-topic dd{margin:0}
.guide-topic summary{cursor:pointer;font-weight:650;margin:16px 0 8px}

/* One contents list and one home for each kind of guidance. */
.guide-layout{margin:28px 0 45px}
.guide-layout [hidden]{display:none!important}
.guide-contents{padding:22px;gap:16px}
.guide-contents .eyebrow{font-size:10px;margin:0;color:var(--muted)}
.guide-contents nav{display:grid;gap:3px}
.guide-contents nav a{padding:8px 0;font-size:14px;line-height:1.35}
.guide-support{border-top:1px solid var(--line);padding-top:16px!important;font-size:12px}
.guide-version{font-size:12px;color:var(--muted);margin:8px 0 0}
.guide-content .about-section{position:relative;padding:36px 0;border-top:1px solid var(--line);scroll-margin-top:24px}
.guide-content .about-section:first-child{border:0;padding-top:0}
.guide-content .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}
.guide-content .feature-card{padding:19px 21px}
.guide-content p,.guide-content li{font-size:15px;line-height:1.75}
.guide-content .eyebrow{font-size:10px;line-height:1.4}
.guide-anchor{display:block;position:absolute;top:0;width:1px;height:1px;scroll-margin-top:24px}
.guide-start ol{padding-left:24px;margin:0 0 22px}
.guide-start li{padding-left:5px;margin-bottom:12px}
.guide-next{font-size:14px;font-weight:600}
.guide-search{margin:22px 0 12px;padding:18px 20px;background:var(--wash);border:1px solid var(--line);border-radius:5px}
.guide-search label{display:block;font-size:13px;font-weight:650;margin-bottom:8px}
.guide-search-row{display:flex;gap:8px}
.guide-search input{flex:1;min-width:0;padding:10px 12px;font:15px system-ui;color:var(--ink);background:var(--paper);border:1px solid #afc2cf;border-radius:4px}
.guide-search button{padding:8px 14px;border:1px solid #afc2cf;border-radius:4px;color:var(--navy);background:var(--paper);font:600 13px system-ui;cursor:pointer}
.guide-search input:focus-visible,.guide-search button:focus-visible{outline:3px solid #edb645;outline-offset:2px}
.guide-search #guide-search-status{font-size:12px;margin:8px 0 0;color:var(--muted)}
.topic-index{display:flex;flex-wrap:wrap;gap:6px 8px;margin:16px 0 22px}
.topic-index a{padding:4px 9px;border:1px solid var(--line);border-radius:4px;font-size:12px;text-decoration:none}
.guide-topics .guide-topic{padding:0;margin:0 0 9px;border:1px solid var(--line);border-radius:5px;background:var(--paper)}
.guide-topic > summary{margin:0;padding:16px 19px;font-weight:650;cursor:pointer;color:var(--navy)}
.guide-topic > summary h3{display:inline}
.guide-topic[open] > summary{border-bottom:1px solid var(--line);background:var(--wash)}
.guide-topic .topic-body{padding:20px 23px 10px}
.guide-topic .topic-body .note,.guide-topic .topic-body .info-help{padding:0;margin:0 0 16px;border:0;background:transparent}
.guide-topic dl{grid-template-columns:minmax(100px,1fr) 2.5fr}
.guide-tip-notes{padding:18px 22px;background:var(--wash);border-left:3px solid #81afc8;margin-bottom:20px}
.guide-tip-notes p{margin:0 0 12px}.guide-tip-notes p:last-child{margin:0}
.guide-tip-links{display:grid;gap:9px}
.guide-tip-links a{display:flex;justify-content:space-between;gap:18px;padding:13px 17px;border:1px solid var(--line);border-radius:4px;font-size:14px;text-decoration:none}
.guide-faq{margin-top:24px}.guide-faq li{margin-bottom:7px}
.tutorial-list{display:grid;gap:14px;margin-top:24px}
.tutorial-list .example-card{display:grid;grid-template-columns:28px minmax(0,1fr);gap:18px;padding:23px}
.tutorial-list .example-number{margin:0;padding-top:3px}
.tutorial-list ol{padding-left:20px;margin:12px 0 16px}
.tutorial-list li{padding-left:4px;margin-bottom:7px}
.tutorial-help{font-size:12px;color:var(--muted)}
.tutorial-help a{font-size:12px;margin:0}
.guide-video-status{padding:20px 23px;background:var(--wash);border:1px solid var(--line);border-radius:5px;color:var(--muted)}
.guide-videos video,.guide-videos iframe{display:block;max-width:100%;width:100%;margin:18px 0}
.guide-checks{border-left:3px solid #b29653!important;padding:26px 28px!important;background:#f7f4eb;margin:12px 0 22px}
.guide-checks p:last-child{margin-bottom:0}
.guide-content .related-links{gap:10px}
@media print{.guide-contents,.guide-search,.topic-index,.guide-tip-links{display:none}.guide-layout{display:block}.guide-topic .topic-body{display:block!important}.guide-content .about-section{break-inside:auto}}

/* Public guides are readable on a phone; calculator workspaces keep their own
   desktop layout and are not affected by these rules. */
.guide-topic table{border-collapse:collapse;table-layout:fixed;width:100%;margin:16px 0;font-size:14px}
.guide-topic thead th:first-child{width:26%}
.guide-topic th,.guide-topic td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.guide-topic th{background:var(--wash)}
.calculator-landing .account-notice{max-width:calc(100vw - 24px)}
.guide-register{border:0;background:transparent;color:var(--blue);font:inherit;text-decoration:underline;cursor:pointer;padding:3px 0;min-height:24px}
.guide-topic caption{text-align:left;font-weight:650;padding:10px 0}
.guide-topic td p:last-child{margin-bottom:0}
.example-todo{padding:12px;border-left:3px solid #b29653;background:var(--wash)}
.method-reference>section{margin:24px 0}
.method-reference table{border-collapse:collapse;table-layout:fixed;width:100%;margin:16px 0;font-size:14px}
.method-reference caption{text-align:left;font-weight:650;padding:10px 0}
.method-reference th,.method-reference td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;overflow-wrap:anywhere}
.method-reference th{background:var(--wash)}
.method-reference thead th:first-child{width:32%}
.method-reference li{margin-bottom:12px}
.about-screenshot img{display:block;max-width:100%;height:auto}

/* Match the index page's system font, with one reading rhythm across the hero,
   features, tutorials and detailed help. Notes and tables have shared sizes. */
.calculator-landing{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:15px;line-height:1.6}
.calculator-landing main :is(p,li,dt,dd){font-size:15px;line-height:1.6}
.calculator-landing main :is(.topic-body,.note,.info-help){font-size:15px;line-height:1.6}
.calculator-landing main p{margin:0 0 12px}
.calculator-landing main p:last-child{margin-bottom:0}
.calculator-landing main :is(ul,ol){margin:0 0 16px;padding-left:24px}
.calculator-landing main li{margin:0 0 8px;padding-left:0}
.calculator-landing main li:last-child{margin-bottom:0}
.calculator-landing main li > :is(ul,ol){margin:8px 0 0}
.calculator-landing main dl{margin:0 0 16px}
.calculator-landing main :is(table,td,th,caption){font-size:14px;line-height:1.6}
.calculator-landing main :is(td,th) :is(p,li,dt,dd){font-size:14px;line-height:1.6}
.calculator-landing main :is(.access-note,.guide-version,.tutorial-help,.example-number),
.calculator-landing .about-model figcaption{font-size:13px;line-height:1.6}
.calculator-landing main .access-note{margin:12px 0 0}
.calculator-landing main .guide-version{margin:8px 0 0}
.calculator-landing main .eyebrow{font-size:10px;line-height:1.4;margin:0 0 12px}
.calculator-landing main .guide-search #guide-search-status{font-size:13px;line-height:1.6;margin:8px 0 0}
.calculator-landing main :is(input,button,select,textarea){font-family:inherit}
.calculator-landing main .guide-search :is(input,button){font-size:14px;line-height:1.6}
.calculator-landing .guide-contents{font-size:14px;line-height:1.6}
.calculator-landing footer{font-size:13px;line-height:1.6}

/* One heading hierarchy across features, help topics, examples and reference
   sections. Account-dialog and navigation typography is outside main. */
.calculator-landing main :is(h2,h3,h4,h5,h6){font-family:var(--site-headline-family);font-weight:700}
.calculator-landing main h2{font-size:clamp(18px,2vw,24px);line-height:1.25;letter-spacing:-.015em;margin:0 0 16px}
.calculator-landing main h3{font-size:clamp(16px,1.6vw,20px);line-height:1.35;letter-spacing:0;margin:24px 0 12px}
.calculator-landing main :is(h4,h5,h6){font-size:clamp(15px,1.2vw,16px);line-height:1.4;letter-spacing:0;margin:20px 0 10px}
.calculator-landing main :is(h3,h4,h5,h6):first-child{margin-top:0}
.calculator-landing main .guide-topic > summary h3{margin:0 0 0 7px}

@media(max-width:850px){
  .method-reference thead th:first-child{width:40%}
  .about-header,main,footer{width:calc(100% - 32px)}
  .about-header{flex-wrap:wrap;gap:12px}.about-header nav{flex-wrap:wrap;gap:12px 20px}
  .about-header nav a,.guide-contents nav a{min-height:44px;display:flex;align-items:center}
  .about-hero{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px 22px 32px}
  .about-model-icon{width:140px;grid-row:auto;justify-self:start;padding:14px}
  h1{overflow-wrap:anywhere}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .guide-contents{position:static;max-height:none}.guide-contents nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}
  .guide-content .feature-grid{grid-template-columns:minmax(0,1fr)}
  .guide-content .about-section{padding:28px 0}.guide-checks{padding:22px 18px!important}
  .guide-topic dl{grid-template-columns:minmax(0,1fr)}.guide-topic dd{margin-bottom:12px}
  .guide-topic .topic-body{padding:16px}.topic-body{overflow-wrap:anywhere;overflow-x:auto}
  .guide-topic thead th:first-child{width:36%}.guide-topic th,.guide-topic td{padding:8px}
  .topic-index a{min-height:44px;display:flex;align-items:center}.guide-search-row{flex-wrap:wrap}
  .guide-search input{flex-basis:180px}.guide-search button{min-height:44px}
  .about-final{padding:24px}.calculator-landing .account-dialog-body{grid-template-columns:minmax(0,1fr)}
  .calculator-landing .account-form-note{font-size:12px}
}