[data-auth-guest][hidden],[data-auth-member][hidden],.account-panel[hidden]{display:none!important}
.account-menu{position:relative;flex-shrink:0}.account-guest{display:flex;align-items:center;gap:16px}.account-login{font-weight:700;color:inherit;text-decoration:none;white-space:nowrap}.account-trigger{display:flex;align-items:center;gap:12px;cursor:pointer}.account-panel{position:absolute;right:0;top:calc(100% + 12px);width:272px;max-width:calc(100vw - 24px);padding:10px;border:1px solid #dce4ef;border-radius:18px;background:#fff;color:#182942;box-shadow:0 20px 55px #071a3830;z-index:1000}.account-panel:before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}.account-identity{padding:12px 12px 16px;border-bottom:1px solid #e5eaf2;display:grid;gap:5px}.account-identity strong{font-size:15px}.account-identity small{font-size:12px;overflow-wrap:anywhere;color:#627087}.account-panel nav{display:grid;padding:6px 0}.account-panel nav a,.account-signout{padding:11px 12px;border-radius:9px;font:inherit;font-size:14px;font-weight:600;text-decoration:none;color:inherit;display:flex;justify-content:space-between;align-items:center}.account-panel nav a:hover,.account-panel nav a:focus-visible{background:#edf3fa}.account-signout{width:100%;border:0;background:#fff0f0;color:#b12632;cursor:pointer}.account-signout:hover{background:#ffe1e4}.account-signout:disabled{opacity:.6;cursor:wait}.account-status{font-size:12px;margin:8px 12px;line-height:1.5}.account-status:empty{display:none}.home-auth{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin-top:20px}.home-auth>a{font-weight:700;color:#fff}.account-login:hover{text-decoration:underline}
@media(max-width:600px){.account-guest{gap:10px}.account-guest .btn{padding:9px 12px;font-size:12px}.account-login{font-size:13px}.account-panel{right:0}.home-auth{gap:14px}}
[data-theme="dark"] .account-panel{background:#142238;color:#e8eff9;border-color:#34445c}[data-theme="dark"] .account-identity{border-color:#34445c}[data-theme="dark"] .account-identity small{color:#b5c3d8}[data-theme="dark"] .account-panel nav a:hover,[data-theme="dark"] .account-panel nav a:focus-visible{background:#243750}
/* Keep account actions comfortable to tap, including narrow phones. */
@media(max-width:600px){
 .account-login,.account-guest .btn,.account-trigger{min-height:44px;box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center}
 .account-login{min-width:44px}.account-guest{gap:8px}.account-guest .btn{padding-inline:10px}
 .account-panel nav a,.account-signout{min-height:44px;box-sizing:border-box}
 .home-auth>a{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
 .hd .theme-toggle,.hd .notification-bell{min-width:44px;min-height:44px}
 .account-panel{max-height:calc(100dvh - 150px);overflow-y:auto}
}
@media(max-width:360px){
 header.site .hd{height:auto;min-height:60px;flex-wrap:wrap;gap:6px;padding-block:8px}
 .hd .account-menu{flex-basis:100%;display:flex;justify-content:flex-end}
 .account-guest{width:100%}.account-guest>a{flex:1}
 .account-panel{top:calc(100% + 8px)}
}
@media(max-width:360px){.lab-copy,.lab-card{min-width:0}.learning-cycle{flex-wrap:wrap}.challenge-top{flex-wrap:wrap}}