/* The shop belongs to the persistent header, independent of the current view. */
.titlebar{position:sticky;top:0;z-index:12;box-shadow:0 3px 12px #00000008}
#study-shop-entry{display:inline-flex;align-items:center;justify-content:center;gap:9px;flex:none;min-height:48px;border:2px solid var(--accent);border-radius:11px;padding:7px 13px;background:var(--selected);color:var(--ink);text-decoration:none;margin:0;white-space:nowrap}
#study-shop-entry:hover{background:var(--paper);box-shadow:0 0 0 2px var(--selected)}
#study-shop-entry:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
#study-shop-entry svg{width:27px;height:27px;flex:none;color:var(--accent)}
#study-shop-entry strong{display:block;font:700 14px/1.3 var(--sans);letter-spacing:0}
#study-shop-entry small{display:block;font:11px/1.4 var(--sans);color:var(--muted)}
#main{scroll-margin-top:90px}
@media(max-width:1150px){.titlebar-right{display:none}.header-extras{gap:12px}}
@media(max-width:760px){.titlebar{padding:0 12px;gap:6px}.titlebar #brand strong{font-size:18px}.titlebar #brand{gap:6px}.header-extras{gap:6px}#study-shop-entry{min-height:44px;padding:7px 8px;gap:5px}#study-shop-entry strong{font-size:12px}#study-shop-entry small{display:none}#study-shop-entry svg{width:21px;height:21px}#mobile-menu-button{padding:8px}#utility-menu #watch-tour{display:flex;align-items:center;gap:8px;min-height:44px;border:1px solid var(--line);border-radius:8px;background:var(--selected);color:var(--ink);padding:8px 12px;font:600 12px var(--sans)}#utility-menu #watch-tour small{display:none}#main{scroll-margin-top:78px}}
@media(max-width:370px){#study-shop-entry strong{font-size:0}#study-shop-entry strong::after{content:'Shop';font-size:12px}}