.topbar,.mode-switch{position:relative;top:auto;left:auto;width:auto;transform:none}.app{padding-top:calc(16px + env(safe-area-inset-top))}.topic-rail{display:none}.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:14px 0}.topic-grid button{min-height:42px;border:1px solid rgba(255,255,255,.13);border-radius:14px;background:rgba(255,255,255,.07);color:var(--ink);font-size:12px;font-weight:900;text-align:left;padding:10px}.topic-grid button.active{background:linear-gradient(135deg,var(--green),var(--cyan));border-color:transparent;color:#08030f}.topic-count{display:flex;justify-content:space-between;align-items:center;margin:12px 0 4px;color:var(--muted);font-size:12px;font-weight:900}.topic-count b{color:var(--green)}.topic-toggle{border:1px solid rgba(255,255,255,.14);border-radius:999px;background:rgba(255,255,255,.08);color:var(--ink);font-size:12px;font-weight:900;padding:8px 11px}.mode:active,.topic-grid button:active{transform:scale(.98)}@media(min-width:760px){.topic-grid{grid-template-columns:repeat(4,1fr)}}