.page-grid{display:grid;grid-template-columns:1fr min(var(--max-content),100%) 1fr;align-items:start;}
.page-grid>main{grid-column:2;}
.side-banner-slot{grid-column:1/2;position:sticky;top:120px;align-self:start;justify-self:center;z-index:5;}
.side-banner-slot.right{grid-column:3/4;}
.ad-frame{width:160px;height:600px;border:1px solid rgba(255,42,18,.35);border-radius:10px;background:linear-gradient(180deg,rgba(23,27,36,.66),rgba(3,4,7,.86));box-shadow:0 0 12px rgba(255,42,18,.14),inset 0 0 20px rgba(0,200,255,.05);display:flex;align-items:center;justify-content:center;padding:16px;opacity:.58;transition:opacity .3s ease,box-shadow .3s ease;}
.ad-frame-blue{border-color:rgba(0,200,255,.35);box-shadow:0 0 12px rgba(0,200,255,.14),inset 0 0 20px rgba(255,42,18,.05);}
.ad-frame:hover{opacity:.86;box-shadow:0 0 24px rgba(255,122,0,.18),inset 0 0 22px rgba(255,255,255,.04);}
.ad-frame span{font-family:var(--font-mono);font-size:.65rem;letter-spacing:.12em;color:var(--text-dim);text-align:center;text-transform:uppercase;writing-mode:vertical-rl;transform:rotate(180deg);}
footer{padding:34px 24px 40px;text-align:center;border-top:1px solid rgba(255,255,255,.06);background:linear-gradient(180deg,var(--bg-void-2),var(--bg-void));}
.footer-row{display:flex;flex-wrap:wrap;justify-content:center;gap:18px;align-items:center;font-size:.82rem;color:var(--text-faint);}
.blog-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-dim);border:1px solid rgba(255,255,255,.08);padding:6px 12px;border-radius:6px;font-family:var(--font-mono);font-size:.75rem;transition:border-color .2s ease,color .2s ease;}
.blog-link:hover{border-color:var(--sky-blue);color:var(--sky-blue);}
.term-dot{width:6px;height:6px;border-radius:50%;background:var(--safe-green);box-shadow:0 0 6px var(--safe-green);}