/* v1.79.0: practical third lessons and a compact, accessible human-class preparation lab. */
.v1790-lesson{margin-top:1rem;padding:1.4rem!important;scroll-margin-top:140px}
.v1790-lesson h3{font-size:1.55rem;line-height:1.24;margin:.55rem 0}
.v1790-lesson blockquote{padding:1rem;border-left:4px solid #196d78;background:#f4f9fa;line-height:1.65}
.v1790-question{border:1px solid #d8e5ec;border-radius:12px;padding:.85rem 1rem;margin:1rem 0}
.v1790-question legend{font-weight:750;line-height:1.4}
.v1790-option{display:flex;gap:.7rem;align-items:flex-start;padding:.45rem 0;line-height:1.5}
.v1790-option input{width:18px;height:18px;flex:0 0 18px;margin:.22rem 0 0}
.v1790-feedback{color:#194e5c;font-size:.96rem;line-height:1.7;min-height:1.3rem}
.v1790-feedback ol{margin:.6rem 0;padding-left:1.3rem}
.v1790-actions{display:flex;gap:.65rem;flex-wrap:wrap;margin:1rem 0}
.v1790-third-action{font-size:.82rem!important;padding:.54rem .7rem!important;min-height:42px!important;align-self:start}
.v1790-prep{padding:0!important;margin-top:1.35rem;overflow:hidden}
.v1790-prep summary{cursor:pointer;list-style-position:inside;padding:1.05rem 1.25rem;font-weight:800;color:#163c52;font-size:1.08rem;min-height:50px}
.v1790-prep[open] summary{border-bottom:1px solid #d8e6eb;background:#f5f9fa}
.v1790-prep-body{padding:1.2rem 1.4rem}
.v1790-prep h3{font-size:1.38rem;margin:0 0 .5rem}
.v1790-prep h4{font-size:1.08rem;margin:0 0 .6rem}
.v1790-prep p{line-height:1.6}
.v1790-prep-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;margin-top:1rem}
.v1790-checks{display:grid;gap:.65rem;margin:.7rem 0}
.v1790-check{display:flex;align-items:flex-start;gap:.75rem;font-size:.93rem;line-height:1.55}
.v1790-check input{flex:0 0 19px;width:19px;height:19px;margin:.2rem 0 0}
.v1790-label{display:grid;gap:.45rem;font-weight:700;font-size:.93rem;margin-top:1rem}
.v1790-label textarea{width:100%;max-width:100%;box-sizing:border-box;border:1px solid #b9cbd3;border-radius:10px;padding:.8rem;font:inherit;font-weight:400;line-height:1.5;color:#15394c;background:#fff}
.v1790-small{font-size:.83rem;color:#4b5f6b}
.v1790-progress,.v1790-status{font-size:.9rem;color:#155e68;font-weight:600}
.v1790-times{width:100%;border-collapse:collapse;font-size:.88rem}
.v1790-times th,.v1790-times td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid #d8e7eb;line-height:1.45;overflow-wrap:anywhere}
.v1790-times thead{background:#eef6f7}
.v1790-times tbody th{font-weight:650}
.v1790-actions .btn{min-height:44px}
.v1790-prep :is(summary,button,input,textarea):focus-visible,.v1790-lesson :is(button,input):focus-visible{outline:3px solid #136b78;outline-offset:3px}
@media(max-width:780px){.v1790-prep-grid{grid-template-columns:1fr;gap:1.2rem}.v1790-prep-body{padding:.95rem}.v1790-actions .btn{font-size:.85rem;padding:.65rem .8rem}}
@media(max-width:440px){.v1790-actions{display:grid}.v1790-actions .btn{width:100%}}


/* Accessible main-menu free resource directory; footer directory deliberately untouched. */
#mainNav .v1790-resource-menu{position:relative;min-width:0;color:#19344a;font-weight:700}
#mainNav .v1790-resource-menu>summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:center;gap:.3rem;min-height:40px;padding:8px 4px;border:1px solid transparent;border-radius:8px;text-align:center;line-height:1.25}
#mainNav .v1790-resource-menu>summary::-webkit-details-marker{display:none}
#mainNav .v1790-resource-menu>summary span{font-size:.82em;transition:transform .15s ease}
#mainNav .v1790-resource-menu[open]>summary{background:#edf7f5;border-color:#b9d9d6;color:#155e69}
#mainNav .v1790-resource-menu[open]>summary span{transform:rotate(180deg)}
#mainNav .v1790-resource-menu>summary:hover{color:#0d6a75;background:#eff7f6}
#mainNav .v1790-resource-menu>summary:focus-visible,#mainNav .v1790-resource-nav a:focus-visible{outline:3px solid #14818c!important;outline-offset:2px}
#mainNav .v1790-resource-popover{position:absolute;top:calc(100% + 7px);right:0;width:min(540px,calc(100vw - 32px));max-height:min(64vh,510px);overflow-y:auto;border:1px solid #cadcde;border-radius:13px;background:#fff;color:#17364b;padding:1rem;box-shadow:0 15px 40px rgba(16,42,67,.2);z-index:101}
#mainNav .v1790-resource-heading{font-size:.79rem;letter-spacing:.06em;text-transform:uppercase;font-weight:800;color:#116874;margin:0 0 .65rem}
#mainNav .v1790-resource-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.2rem .65rem}
#mainNav .v1790-resource-nav a{display:block!important;font-size:.84rem;font-weight:650!important;line-height:1.37;text-align:left;padding:.64rem .72rem!important;min-height:38px;border-radius:7px;overflow-wrap:break-word}
#mainNav .v1790-resource-nav a:hover,#mainNav .v1790-resource-nav a[aria-current="location"]{background:#ecf6f5;color:#106675;text-decoration:none}
#mainNav .v1790-resource-footnote{font-size:.75rem;color:#536778;font-weight:500;line-height:1.5;margin:.75rem 0 0;border-top:1px solid #e4edf0;padding-top:.6rem}
@media(min-width:1161px){
 .site-header .nav-wrap{gap:1rem!important}
 #mainNav.main-nav{display:grid!important;flex:1 1 auto;grid-template-columns:repeat(5,minmax(0,1fr));gap:.35rem .48rem!important;align-items:center;min-width:0;font-size:.8rem!important}
 #mainNav.main-nav>a{text-align:center;line-height:1.27;overflow-wrap:normal;padding:8px 2px!important}
 #mainNav.main-nav>.v1790-resource-menu>summary{font-size:.8rem}
 #mainNav.main-nav>.nav-cta{padding:10px 6px!important}
}
@media(min-width:981px) and (max-width:1160px){
 .site-header .nav-toggle{display:inline-flex!important}
 #mainNav.main-nav{display:none!important;position:absolute;top:100%;right:16px;left:auto;width:min(410px,calc(100vw - 32px));max-height:calc(100vh - 120px);overflow:auto;background:#fff;border:1px solid #dce7eb;border-radius:12px;padding:12px;box-shadow:0 18px 38px rgba(16,42,67,.15);flex-direction:column;align-items:stretch;z-index:102}
 #mainNav.main-nav.open{display:flex!important}
 #mainNav.main-nav>a{text-align:left;padding:12px!important}
 #mainNav .v1790-resource-popover{position:static;width:100%;max-height:none;box-shadow:none;border-radius:8px;padding:.75rem}
}
@media(max-width:980px){
 #mainNav.main-nav>.v1790-resource-menu{width:100%}
 #mainNav .v1790-resource-menu>summary{justify-content:space-between;text-align:left;padding:12px 14px;font-size:.91rem}
 #mainNav .v1790-resource-popover{position:static;width:100%;max-height:none;overflow:visible;box-shadow:none;border-radius:9px;padding:.7rem;background:#f9fcfc}
 #mainNav .v1790-resource-nav{grid-template-columns:1fr;gap:0}
 #mainNav .v1790-resource-nav a{padding:10px 12px!important;font-size:.87rem}
}
@media(prefers-reduced-motion:reduce){#mainNav .v1790-resource-menu>summary span{transition:none}}