@layer legacy{.reference-tool [hidden],.widget-builder [hidden]{display:none!important}.reference-controls{border:1px solid var(--border);border-radius:var(--panel-radius);background:#fff;padding:24px}.reference-panel-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.reference-panel-heading h2{margin:0;font-size:18px}.reference-fields{grid-template-columns:repeat(3,minmax(0,1fr));align-items:end;gap:16px;display:grid}.reference-fields .math-field{grid-column:auto}.reference-fields .reference-wide{grid-column:1/-1}.reference-fields .calculate-button,.reference-fields .math-secondary-button{min-height:46px;padding:10px 14px;font-size:14px}.reference-output{border:1px solid var(--border);border-radius:var(--panel-radius);background:var(--field);min-width:0;margin-top:24px;padding:26px}.reference-tool>.reference-output:first-of-type{margin-top:0}.reference-controls+.reference-output{margin-top:24px!important}.reference-answer-label{color:var(--muted);margin:0 0 9px;font-size:13px}.reference-answer-value{color:var(--blue);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0;font-size:clamp(25px,4vw,38px);font-weight:700;line-height:1.35}.reference-answer-value.is-long{letter-spacing:.025em;font-family:Courier New,monospace;font-size:clamp(18px,3vw,24px)}.reference-answer-unit{color:var(--muted);margin:8px 0 0;font-size:14px}.reference-facts{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:23px 0 0;display:grid}.reference-facts div{border:1px solid var(--border);background:#fff;border-radius:12px;min-width:0;padding:14px}.reference-facts dt{color:var(--muted);font-size:11px}.reference-facts dd{overflow-wrap:anywhere;margin:5px 0 0;font-size:15px;font-weight:700}.reference-note{color:var(--muted);overflow-wrap:anywhere;margin:18px 0 0;font-size:12px;line-height:1.65}.reference-feedback,.reference-content-feedback{color:var(--blue);overflow-wrap:anywhere;font-size:12px}.reference-feedback:empty,.reference-content-feedback:empty{display:none}.reference-actions{flex-wrap:wrap;gap:9px;margin-top:20px;display:flex}.reference-actions button{border:1px solid var(--border-dark);color:var(--text);font:inherit;cursor:pointer;background:#fff;border-radius:9px;padding:9px 13px;font-size:12px}.reference-actions button:hover{border-color:var(--blue);color:var(--blue)}.reference-calendars{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px;display:grid}.reference-calendars:has(>.reference-month:only-child){grid-template-columns:minmax(0,340px)}.reference-month{border:1px solid var(--border);background:#fff;border-radius:14px;min-width:0;padding:17px 14px}.reference-month h3{margin:0 0 12px;font-size:15px}.reference-month table{border-collapse:collapse;table-layout:fixed;text-align:center;width:100%}.reference-month th{color:var(--muted);padding:5px 0;font-size:10px;font-weight:400}.reference-month td{font-variant-numeric:tabular-nums;height:32px;font-size:12px}.reference-month td.is-weekend span{width:26px;height:26px;color:var(--blue);background:#eef3ff;border-radius:6px;justify-content:center;align-items:center;display:inline-flex}.reference-month p{color:var(--muted);margin:10px 0 0;font-size:10px}.reference-countdown{color:var(--muted);flex-direction:column;gap:5px;margin-top:20px;font-size:12px;display:flex}.reference-countdown strong{color:var(--blue);font-variant-numeric:tabular-nums}.reference-year-nav{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.reference-year-nav a{border:1px solid var(--border);color:var(--blue);background:#fff;border-radius:8px;padding:7px 13px;font-size:12px;text-decoration:none}.reference-year-nav a[aria-current=page]{color:#fff;background:var(--blue);border-color:var(--blue)}@media print{.reference-year-nav{display:none!important}.app-card{overflow:visible!important}}.reference-content{font-size:15px;line-height:1.75}.reference-content p{margin:12px 0}.reference-content a{color:var(--blue);text-underline-offset:3px}.reference-lead{font-size:16px;line-height:1.8}.reference-topic{margin-top:22px;padding-top:12px;scroll-margin-top:100px;display:flow-root}.reference-content h2{margin:0 0 14px;font-size:23px;line-height:1.4}.reference-toc{background:var(--field);border:1px solid var(--border);border-radius:14px;margin:24px 0;padding:20px 22px;font-size:13px}.reference-toc strong{color:var(--muted);font-size:12px}.reference-toc ul{margin:9px 0 0;padding-left:18px}.reference-toc li{margin:4px 0}.reference-formula,.reference-example{background:var(--field);border-radius:12px;padding:16px 18px}.reference-formula{color:var(--blue);overflow-wrap:anywhere;font-size:18px;font-weight:700}.reference-code{background:var(--field);border:1px solid var(--border);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:12px;padding:17px;font-size:14px}.reference-diagram{float:right;width:230px;max-width:40%;height:160px;color:var(--blue);margin:0 0 14px 26px}.reference-diagram :is(circle,rect,path,ellipse,line){fill:#315ee80a;stroke:currentColor;stroke-width:2px}.reference-diagram text{fill:var(--blue);font:16px Arial,sans-serif}.reference-diagram .diagram-dashed{stroke-dasharray:5 5;fill:none}.reference-diagram .diagram-point{fill:var(--blue)}.reference-table-scroll{border:1px solid var(--border);border-radius:12px;max-width:100%;margin:18px 0;overflow:auto}.reference-info-table{border-collapse:collapse;text-align:left;width:100%;font-size:13px}.reference-info-table :is(th,td){border-bottom:1px solid var(--border);vertical-align:top;min-width:130px;padding:12px 14px}.reference-info-table thead{background:var(--field)}.reference-info-table tbody th{font-weight:400}.reference-info-table tr:last-child :is(th,td){border-bottom:0}.reference-link-list{flex-wrap:wrap;gap:8px 20px;margin:18px 0;padding:0;font-size:13px;list-style:none;display:flex}.reference-link-list li{min-width:0}.reference-sources,.reference-related{margin:30px 0}.reference-sources ul{padding-left:19px;font-size:12px}.reference-sources h2,.reference-related h2{font-size:18px}.reference-symbol-copy{color:var(--blue);cursor:pointer;background:#eef3ff;border:1px solid #d7e2ff;border-radius:14px;align-items:center;gap:24px;padding:14px 26px;font-size:52px;display:flex}.reference-symbol-copy span{font-size:14px}.expression-calculator{border:1px solid var(--border);max-width:480px;color:var(--text);background:#fff;border-radius:18px;margin:0 auto;padding:22px}.expression-calculator label{color:var(--muted);margin-bottom:7px;font-size:12px;display:block}.expression-calculator input{border:1px solid var(--border-dark);width:100%;color:var(--text);background:#fff;border-radius:9px;padding:12px;font:18px Courier New,monospace;display:block}.expression-screen{background:var(--field);border-radius:10px;margin:14px 0;padding:14px}.expression-screen span{color:var(--muted);font-size:10px;display:block}.expression-screen output{color:var(--blue);text-align:right;overflow-wrap:anywhere;font-size:27px;line-height:1.5;display:block}.expression-keypad{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid}.expression-keypad button{border:1px solid var(--border);background:var(--field);height:40px;color:var(--text);cursor:pointer;border-radius:8px;padding:4px;font-size:15px}.expression-keypad button.is-operator{color:var(--blue);background:#edf3ff}.expression-keypad button:hover{border-color:var(--blue)}.expression-controls{grid-template-columns:1fr 1fr;gap:8px;margin-top:10px;display:grid}.expression-controls button{border:1px solid var(--border);cursor:pointer;font:inherit;border-radius:9px;padding:9px;font-size:12px}.expression-controls [type=submit]{color:#fff;background:var(--blue)}.expression-controls [data-expression-action]{background:var(--field);color:var(--text)}.expression-controls button:disabled{opacity:.5;cursor:default}.expression-error{color:var(--error);font-size:12px}.expression-hint,.expression-feedback{color:var(--muted);margin:10px 0 0;font-size:10px;line-height:1.5}.expression-error:empty,.expression-feedback:empty{display:none}.expression-brand{color:var(--blue);margin:10px 0 0;font-size:10px;text-decoration:none;display:block}.widget-builder{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;display:grid}.widget-builder h2{margin:0 0 20px;font-size:18px}.widget-settings>.reference-fields{grid-template-columns:1fr 1fr}.widget-builder textarea{border:1px solid var(--border-dark);background:var(--field);width:100%;color:var(--text);resize:vertical;overflow-wrap:anywhere;border-radius:12px;margin:8px 0 12px;padding:14px;font:12px/1.6 Courier New,monospace}.widget-settings>label{color:var(--muted);margin-top:18px;font-size:12px;display:block}.widget-preview iframe{background:var(--field);border:0;border-radius:14px;width:100%;height:560px}.widget-feedback{color:var(--blue);font-size:12px}.reference-embed{background:#fff;min-width:250px;padding:8px}.reference-embed .expression-calculator{max-width:none;padding:12px}.reference-embed .expression-screen{margin:9px 0;padding:9px 12px}.reference-embed .expression-keypad button{height:34px}.reference-embed .expression-keypad{gap:5px}.reference-embed .expression-hint{font-size:9px}.reference-embed:has([data-theme=dark]){background:#172033}.expression-calculator[data-theme=dark]{--text:#eef3ff;--muted:#afbdd3;--border:#34425e;--border-dark:#475875;--field:#25314a;--blue:#8aabff;--error:#ffacb5;background:#172033}.expression-calculator[data-theme=dark] input{background:var(--field)}.expression-calculator[data-theme=dark] .is-operator{background:#304367}.expression-calculator[data-theme=dark] [type=submit]{color:#172033}@media (width<=800px){.reference-calendars,.reference-facts{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=620px){.reference-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.reference-controls,.reference-output{padding:20px 16px}.reference-fields .calculate-button{grid-column:1/-1}.widget-builder{grid-template-columns:1fr}.reference-content{font-size:14px}.reference-content h2{font-size:20px}.reference-diagram{float:none;max-width:100%;margin:12px auto;display:block}.reference-calendars,.reference-calendars:has(>.reference-month:only-child){grid-template-columns:1fr}.reference-card .page-heading h1{font-size:28px}.reference-actions button{flex:1}}@media print{.site-header,.ad-slot,.reference-controls,.reference-actions,.reference-countdown,.reference-feedback,.reference-toc,.reference-related,.reference-content-feedback,.seo-content,.widget-builder{display:none!important}body,.page-layout,.main-column,.app-card,.reference-output{width:100%!important;max-width:none!important;box-shadow:none!important;background:#fff!important;border:0!important;margin:0!important;padding:0!important}.simple-page:before,.app-card:before{display:none}.reference-card .page-heading{padding:0 0 12px}.reference-card .page-heading h1{font-size:22px}.reference-card .page-heading p,.reference-card .eyebrow{display:none}.reference-answer-value{color:#000;font-size:24px}.reference-calendars{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.reference-month{break-inside:avoid;padding:10px}.reference-month td{height:22px}.reference-month td.is-weekend span{width:22px;height:22px}.reference-month h3{font-size:12px}.reference-month p{font-size:8px}}}