:root{--k12calc-rail-color-inactive:#cbd5e1;--k12calc-rail-color-active:var(--k12calc-shield-color,#1d4ed8);--k12calc-rail-tint:var(--k12calc-shield-tint,#eff6ff);--k12calc-rail-bg:hsla(0,0%,100%,.92)}.k12calc-rail{backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);background:var(--k12calc-rail-bg);border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 4px 16px rgba(15,23,42,.08);display:none;font-family:inherit;min-width:168px;opacity:.35;padding:12px;position:fixed;right:16px;top:50%;transform:translateY(-50%);transition:opacity .25s ease;z-index:50}body.k12calc-deepdive-open .k12calc-rail{display:block}.k12calc-rail:focus-within,.k12calc-rail:hover,body.k12calc-rail-scrolling .k12calc-rail{opacity:1}@media (max-width:900px){body.k12calc-deepdive-open .k12calc-rail{display:none}}.k12calc-rail:before{border-bottom:1px solid #e2e8f0;color:#94a3b8;content:"On this page";display:block;font-size:10px;font-weight:700;letter-spacing:.08em;margin-bottom:6px;padding:0 8px 8px;text-transform:uppercase}.k12calc-rail ol{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;padding:0}.k12calc-rail-marker{align-items:center;border-radius:8px;color:var(--k12calc-rail-color-inactive);display:flex;gap:10px;padding:8px 10px;position:relative;text-decoration:none;transition:color .15s ease,background .15s ease;white-space:nowrap}.k12calc-rail-dot{background:currentColor;border-radius:50%;flex-shrink:0;height:8px;transition:transform .15s ease;width:8px}.k12calc-rail-label{color:inherit;font-family:inherit;font-size:12.5px;font-weight:600}.k12calc-rail-marker.active,.k12calc-rail-marker:hover{background:var(--k12calc-rail-tint);color:var(--k12calc-rail-color-active)}.k12calc-rail-marker.active .k12calc-rail-dot{transform:scale(1.4)}.k12calc-deep-dive-tabs,.k12calc-tab-list{display:none!important}#k12calc-tier3-content .k12calc-tab-content{display:block!important;margin-bottom:28px;scroll-margin-top:24px}#k12calc-tier3-content .k12calc-tab-content[hidden]{display:block!important}[id^=k12calc-tab-panel-]{scroll-margin-top:24px}