:root{
  --aa9-bg:#f6f7fb;
  --aa9-surface:#ffffff;
  --aa9-border: rgba(17,24,39,.10);
  --aa9-accent:#6366f1;
  --aa9-ink:#111827;
  --aa9-muted: rgba(17,24,39,.70);
}
html,body{background:var(--aa9-bg);color:var(--aa9-ink);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

.aa9-shell{display:grid;grid-template-columns:88px 1fr;min-height:100vh;}
.aa9-rail{position:sticky;top:0;height:100vh;background:rgba(255,255,255,.70);backdrop-filter:saturate(170%) blur(10px);border-right:1px solid var(--aa9-border);padding:.9rem .6rem;}
.aa9-rail-top{margin-bottom:1rem;}
#logo a{display:block;font-weight:900;text-decoration:none;color:inherit;letter-spacing:.2px;text-align:center;}

.aa9-rail-list{list-style:none;margin:0;padding:0;display:grid;gap:.35rem;}
.aa9-rail-link{display:flex;flex-direction:column;align-items:center;gap:.1rem;padding:.55rem .35rem;border-radius:14px;text-decoration:none;color:inherit;border:1px solid transparent;}
.aa9-rail-link:hover{border-color:var(--aa9-border);}
.aa9-rail-link.is-active{background:rgba(99,102,241,.14);border-color:rgba(99,102,241,.22);}
.aa9-rail-icon{font-size:.75rem;color:var(--aa9-muted);}
.aa9-rail-text{font-size:.68rem;max-width:70px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:.85;}

.aa9-main{min-width:0;}
.aa9-head{padding:1.25rem 0;border-bottom:1px solid var(--aa9-border);background:rgba(246,247,251,.85);backdrop-filter:saturate(170%) blur(10px);position:sticky;top:0;z-index:30;}
.aa9-kicker{text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.75rem;color:var(--aa9-muted);}
.aa9-title{font-size:1.8rem;font-weight:900;line-height:1.1;margin:.25rem 0 .35rem;}
.aa9-sub{color:var(--aa9-muted);}
.aa9-feed{padding:1.25rem 0 2.25rem;}

#footer{border-top:1px solid var(--aa9-border);padding:1.25rem 0;background:rgba(255,255,255,.75);}
#footer .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;}
#footer .social{display:flex;gap:.5rem;}
#footer .social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:14px;border:1px solid var(--aa9-border);text-decoration:none;background:rgba(255,255,255,.8);}

@media (max-width: 860px){
  .aa9-shell{grid-template-columns:1fr;}
  .aa9-rail{height:auto;position:relative;border-right:none;border-bottom:1px solid var(--aa9-border);}
  .aa9-rail-list{grid-auto-flow:column;grid-auto-columns:1fr;overflow:auto;}
  .aa9-rail-link{flex-direction:row;justify-content:center;}
  .aa9-rail-text{max-width:140px;}
}