/* Fixed function directory: categories never depend on screen height or current page. */
.viewport-shell .masthead-more{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:0 11px;border:1px solid var(--folio-edge);border-radius:9px;background:var(--folio-soft);color:var(--green);font-size:13px;white-space:nowrap}
.masthead-more span{font-size:10px;opacity:.65}.masthead-more[aria-expanded=true] span{transform:rotate(180deg)}
#function-menu{box-sizing:border-box;width:min(600px,calc(100vw - 24px));max-width:none;max-height:calc(var(--game-height,100dvh) - 24px);margin:auto;padding:14px 16px 16px;border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--ink);overflow:hidden;box-shadow:0 14px 48px #223f3326}
#function-menu[open]{display:flex;flex-direction:column;gap:0}
#function-menu::backdrop{background:#2e443b45}
#function-menu [hidden]{display:none!important}
#function-menu .function-menu-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 0 8px;padding:0;border:0;background:none;flex:none}
#function-menu h2{font-size:16px;line-height:1.3;font-weight:600;color:var(--ink);margin:0;letter-spacing:1px}
#function-menu [data-menu-close]{flex:none;min-height:36px;width:36px;padding:0;border:1px solid var(--line);background:var(--folio-control);color:var(--muted);font-size:24px;line-height:1;border-radius:9px}
#function-menu .function-menu-search{display:block;flex:none;margin:0 0 8px}
#function-menu-query{box-sizing:border-box;width:100%;min-height:42px;margin:0;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--folio-control);color:var(--ink);font:inherit;font-size:14px}
#function-menu .function-menu-tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));flex:none;gap:4px;padding:0;margin:0 0 5px}
#function-menu .function-menu-tabs button{min-width:0;min-height:38px;margin:0;padding:5px 2px;border:1px solid transparent;background:var(--folio-control);color:var(--muted);font-size:13px;border-radius:8px;white-space:nowrap}
#function-menu .function-menu-tabs button[aria-pressed=true]{color:var(--green);border-color:var(--folio-edge);background:var(--folio-selected)}
#function-menu .function-menu-note{flex:none;font-size:11px;line-height:1.45;color:var(--muted);margin:3px 0 8px}
#function-menu .function-menu-groups{min-height:0;flex:1 1 auto;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;touch-action:pan-y pinch-zoom;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable}
#function-menu .function-menu-group{margin:0;padding:0;border:0;background:none;box-shadow:none}
#function-menu .function-menu-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:5px}
#function-menu .function-menu-common .function-menu-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
#function-menu .function-menu-entry{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-width:0;min-height:44px;margin:0;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--folio-soft);color:var(--ink);font-size:14px;line-height:1.4;text-align:left;white-space:normal;box-shadow:none}
#function-menu .function-menu-common .function-menu-entry{min-height:66px}
#function-menu .function-menu-entry-name{display:block;font-weight:500}
#function-menu .function-menu-entry small{display:block;margin-top:3px;color:var(--muted);font-size:11px;line-height:1.4}
#function-menu .function-menu-entry:hover:not(:disabled){background:var(--folio-selected);border-color:var(--folio-edge)}
#function-menu .function-menu-entry[aria-current=page]{border-color:var(--folio-edge);color:var(--green);background:var(--folio-selected)}
#function-menu .function-menu-entry:disabled{opacity:.78;cursor:default}
#function-menu .function-menu-entry [data-menu-unavailable]{color:var(--muted)}
#function-menu :is(button,input):focus-visible{outline:2px solid var(--green);outline-offset:-2px}
#function-menu .function-menu-empty{margin:8px 0;padding:10px;color:var(--muted);font-size:13px;line-height:1.6}
:root[data-theme=night] #function-menu{box-shadow:0 16px 48px #0006}
:root[data-theme=night] #function-menu::backdrop{background:#060d0ac4}
@media(max-width:599px){
 #function-menu{padding:10px 12px 12px;border-radius:13px}
 .viewport-shell .masthead-more{min-height:34px;padding:0 8px;font-size:12px}
 .viewport-shell .mast-links{gap:6px}
 .viewport-shell .mast-links>a{font-size:0}
 .viewport-shell .mast-links>a::after{content:'导航站';font-size:11px}
}