/* Scoped independently of Tailwind and academy styles to prevent page-specific drift. */
#app-navbar{--nav-bg:222 47% 6%;--nav-text:210 40% 98%;--nav-muted:215 20% 55%;--nav-border:217 33% 17%;position:sticky;top:0;z-index:50;width:100%;margin:0;padding:0;border:0;border-bottom:1px solid hsl(var(--nav-border));background:hsl(var(--nav-bg)/.97);color:hsl(var(--nav-text));font:400 14px/20px Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;letter-spacing:normal;text-align:left;box-shadow:none;direction:ltr}
#app-navbar[data-theme="light"]{--nav-bg:210 20% 98%;--nav-text:222 47% 10%;--nav-muted:215 16% 35%;--nav-border:214 20% 85%}
#app-navbar *{box-sizing:border-box}
#app-navbar a{font-family:inherit;font-size:15px;font-weight:500;line-height:22px;letter-spacing:normal;color:hsl(var(--nav-muted));text-decoration:none;text-shadow:none;margin:0;box-shadow:none;transition:background-color .15s,color .15s}
#app-navbar .appnav-inner{max-width:1280px;min-height:74px;margin:0 auto;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:24px}
#app-navbar .appnav-brand{display:flex;align-items:center;gap:8px;flex-shrink:0;padding:0;background:transparent;border:0}
#app-navbar .appnav-logo{display:flex;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid hsl(var(--neon,155 100% 50%)/.3);border-radius:10px;background:hsl(var(--neon,155 100% 50%)/.1)}
#app-navbar .appnav-mark{display:block;width:38px;height:38px;background:hsl(var(--neon,155 100% 50%));mask:url('/image/helmet.png') center/contain no-repeat;-webkit-mask:url('/image/helmet.png') center/contain no-repeat;filter:none}
#app-navbar .appnav-wordmark{display:block;color:hsl(var(--nav-text));font-size:16.5px;font-weight:700;line-height:22px;letter-spacing:.7px}
#app-navbar .appnav-wordmark>span{color:hsl(var(--neon,155 100% 50%))}
#app-navbar .appnav-wordmark small{display:block;font-size:11px;font-weight:400;line-height:16px;color:hsl(var(--nav-muted));letter-spacing:.25px}
#app-navbar .appnav-menu{display:flex;align-items:center;justify-content:space-between;flex:1;gap:20px;min-width:0}
#app-navbar .appnav-links{display:flex;align-items:center;justify-content:center;gap:4px;flex:1;margin:0;padding:0;border:0;background:transparent}
#app-navbar .appnav-links a{display:block;padding:10px 14px;border:0;border-radius:8px;white-space:nowrap;background:transparent}
#app-navbar .appnav-links a:hover,#app-navbar .appnav-account a:hover{color:hsl(var(--nav-text));background:hsl(var(--nav-border)/.65)}
#app-navbar a[aria-current="page"]{color:hsl(var(--neon,155 100% 50%));background:hsl(var(--neon,155 100% 50%)/.1)}
#app-navbar .appnav-account{display:flex;gap:8px;align-items:center;flex-shrink:0}
#app-navbar .appnav-account a{padding:10px 14px;border-radius:6px;white-space:nowrap}
#app-navbar .appnav-account .appnav-signup{background:hsl(var(--neon,155 100% 50%));color:hsl(222 47% 6%);font-weight:600;padding:10px 18px}
#app-navbar .appnav-account .appnav-signup:hover{filter:brightness(.92)}
#app-navbar .appnav-username{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:8px 12px;border:1px solid hsl(var(--nav-border));border-radius:8px;color:hsl(var(--nav-muted));font:12px/16px ui-monospace,SFMono-Regular,monospace}
#app-navbar .appnav-account .appnav-logout{color:#fca5a5}
#app-navbar .appnav-toggle{display:none;align-items:center;justify-content:center;padding:8px;min-height:36px;min-width:36px;border:0;border-radius:8px;background:transparent;color:hsl(var(--nav-muted));cursor:pointer}
#app-navbar :is(a,button):focus-visible{outline:2px solid hsl(var(--neon,155 100% 50%));outline-offset:3px}
body.embed #app-navbar{display:none}
@media(max-width:1100px){
 #app-navbar .appnav-inner{flex-wrap:wrap;gap:0}
 #app-navbar .appnav-toggle{display:flex;margin-left:auto}
 #app-navbar .appnav-menu{display:none;flex-basis:100%;padding-top:12px;margin-top:12px;border-top:1px solid hsl(var(--nav-border))}
 #app-navbar .appnav-menu.is-open{display:flex;align-items:stretch;flex-direction:column;gap:12px}
 #app-navbar .appnav-links{flex-direction:column;align-items:stretch;gap:4px}
 #app-navbar .appnav-links a{padding:12px}
 #app-navbar .appnav-account{flex-wrap:wrap;padding:12px 0 0;border-top:1px solid hsl(var(--nav-border))}
}
@media(prefers-reduced-motion:reduce){#app-navbar a{transition:none}}