:root{--shell-width:236px;--shell-navy:#073f5c;--shell-active:#0c5776;--shell-text:#c3dae4}
.app-shell{min-height:100vh}
.app-sidebar{position:fixed;inset:0 auto 0 0;width:var(--shell-width);z-index:50;background:var(--shell-navy);color:#fff;padding:22px 16px;display:flex;flex-direction:column;overflow:auto}
.app-content{min-width:0;margin-left:var(--shell-width);min-height:100vh}
.app-brand{display:flex;align-items:center;gap:11px;padding:3px 9px 25px;text-decoration:none;color:#fff}
.app-mark{width:38px;height:38px;border-radius:11px;background:#fff;display:grid;place-items:center;overflow:hidden;flex:0 0 auto}
.app-mark img{display:block;width:32px;height:32px;object-fit:contain}
.app-brand-text strong{font-size:18px;display:block}.app-brand-text small{color:#a8d1df;display:block}
.app-nav{display:grid;gap:6px}.app-nav a,.app-nav span{display:flex;align-items:center;gap:10px;border-radius:11px;padding:11px 13px;color:var(--shell-text);text-decoration:none;font-size:14px;font-weight:500}
.app-nav a:hover,.app-nav a.active{background:var(--shell-active);color:#fff}.app-nav span{opacity:.58;cursor:not-allowed}.app-nav-icon{width:20px;text-align:center;font-size:16px;flex:0 0 auto}
.app-nav-label{min-width:0}.app-nav-badge{margin-left:auto;background:rgba(255,255,255,.13);border-radius:20px;padding:1px 7px;font-size:11px}
.app-side-note{margin-top:auto;border:1px solid rgba(255,255,255,.15);border-radius:13px;padding:13px;color:#c9e1ea;font-size:12px;line-height:1.5}
@media(max-width:760px){:root{--shell-width:76px}.app-sidebar{padding:14px 9px}.app-brand{padding:3px 10px 18px}.app-brand-text,.app-nav-label,.app-nav-badge,.app-side-note{display:none}.app-nav a,.app-nav span{justify-content:center;padding:12px}.app-nav-icon{font-size:20px}}