.site-navigation{position:sticky;top:0;z-index:30;background:#f8f9f3;border-bottom:1px solid #d7e3d4;box-shadow:0 3px 12px #234e4208;color:#234e42;font-family:inherit}
.site-navigation *{box-sizing:border-box}
.site-navigation .study-nav-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:24px;padding:12px 30px}
.site-navigation .study-nav-home{display:flex;align-items:center;gap:10px;min-height:48px;padding:9px 16px;border:1px solid #2e624f;border-radius:12px;background:#2e624f;color:#fff;text-decoration:none;line-height:1.35}
.site-navigation .study-nav-icon{font-size:28px;line-height:1}
.site-navigation .study-nav-home-copy{display:grid;gap:2px}
.site-navigation .study-nav-home strong{font-size:16px;font-weight:700}
.site-navigation .study-nav-hint{font-size:12px;color:#eff6ed}
.site-navigation .study-nav-current{display:grid;gap:2px;margin-right:auto;min-width:0;line-height:1.4}
.site-navigation .study-nav-eyebrow{font-size:12px;color:#61765f}
.site-navigation .study-nav-book{font-size:18px;overflow-wrap:anywhere}
.site-navigation .study-nav-picker{position:relative;margin:0}
.site-navigation .study-nav-trigger{display:flex;align-items:center;justify-content:center;gap:12px;min-height:48px;padding:11px 18px;border:1px solid #bdceba;border-radius:12px;background:#fff;color:#234e42;font-size:16px;font-weight:700;cursor:pointer;list-style:none;white-space:nowrap}
.site-navigation .study-nav-trigger::-webkit-details-marker{display:none}
.site-navigation .study-nav-chevron{font-size:20px;line-height:1}
.site-navigation details[open] .study-nav-trigger{background:#eaf2e6;border-color:#72956b}
.site-navigation .study-nav-panel{position:absolute;top:calc(100% + 10px);right:0;width:480px;max-width:calc(100vw - 32px);max-height:calc(100dvh - 116px);overflow-y:auto;overscroll-behavior:contain;padding:18px;border:1px solid #cddcc7;border-radius:16px;background:#fff;box-shadow:0 14px 36px #17392c24}
.site-navigation .study-nav-panel-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.site-navigation .study-nav-panel-title{margin:0;font-size:15px;font-weight:700;color:#4b6854;line-height:1.5}
.site-navigation .study-nav-close{flex-shrink:0;min-height:44px;padding:8px 12px;font:inherit;font-size:13px;line-height:1.5;border:1px solid #c6d6bf;border-radius:10px;background:#f1f6eb;color:#2e624f;cursor:pointer}
.site-navigation .study-nav-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.site-navigation .study-nav-choice{display:grid;align-content:start;gap:6px;min-height:92px;padding:14px 12px;border:1px solid #dce6d6;border-radius:12px;color:#234e42;text-decoration:none;background:#fcfdf9;line-height:1.5;overflow-wrap:anywhere}
.site-navigation .study-nav-choice-top{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.site-navigation .study-nav-choice strong{font-size:18px}
.site-navigation .study-nav-description{font-size:12px;color:#5a715f}
.site-navigation .study-nav-badge{font-size:11px;font-weight:700;background:#2e624f;color:#fff;padding:2px 6px;border-radius:6px}
.site-navigation .study-nav-choice[aria-current=page]{border:2px solid #72956b;padding:13px 11px;background:#eff6e9}
.site-navigation .study-nav-home:hover{background:#254f40}
.site-navigation .study-nav-choice:hover{background:#eaf2e6;border-color:#72956b}
.site-navigation a:focus-visible,.site-navigation summary:focus-visible,.site-navigation button:focus-visible{outline:3px solid #b36220;outline-offset:3px}
@media(max-width:600px){
 .site-navigation .study-nav-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.7fr) minmax(0,1fr);padding:10px 12px;gap:8px;padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
 .site-navigation .study-nav-home{justify-content:center;padding:10px 8px;gap:0;min-width:0}
 .site-navigation .study-nav-home strong,.site-navigation .study-nav-trigger{font-size:14px}
 .site-navigation .study-nav-hint,.site-navigation .study-nav-icon{display:none}
 .site-navigation .study-nav-current{margin:0;text-align:center}
 .site-navigation .study-nav-book{font-size:16px}
 .site-navigation .study-nav-trigger{padding:10px 8px;gap:6px;min-width:0;white-space:normal;text-align:center}
 .site-navigation .study-nav-picker{position:static;min-width:0}
 .site-navigation .study-nav-panel{top:100%;left:12px;right:12px;width:auto;max-width:none;padding:14px;padding-bottom:max(14px,env(safe-area-inset-bottom));border-radius:0 0 16px 16px;max-height:calc(100vh - 180px);max-height:min(60dvh,calc(100dvh - 180px))}
 .site-navigation .study-nav-choice{min-height:88px;padding:12px 10px}
 .site-navigation .study-nav-choice[aria-current=page]{padding:11px 9px}
 .site-navigation .study-nav-description{font-size:12px;line-height:1.6}
}
@media(max-width:360px){.site-navigation .study-nav-inner{padding:8px 10px;gap:8px}.site-navigation .study-nav-icon{display:none}.site-navigation .study-nav-trigger{gap:4px;padding:10px}.site-navigation .study-nav-home{padding:10px}.site-navigation .study-nav-choices{grid-template-columns:1fr}}
@media print{.site-navigation{display:none!important}}