.osk{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(980px,96vw);background:#111;color:#fff;padding:10px;box-shadow:0 -6px 24px rgba(0,0,0,.35);border-radius:12px 12px 0 0;z-index:2147483647}
  .osk .row{display:flex;gap:6px;margin:6px 0;justify-content:center;flex-wrap:wrap}
  .osk button{flex:0 0 auto;min-width:40px;height:48px;font-size:18px;border:0;border-radius:8px;background:#2a2a2a;color:#fff;padding:0 12px;touch-action:manipulation}
  .osk button:active{transform:translateY(1px)}
  .osk .wide{min-width:84px}.osk .xl{min-width:140px}.osk .muted{background:#333}.osk .primary{background:#2563eb}
  .osk-hidden{display:none!important}
  .osk-chip{position:fixed;right:10px;bottom:10px;z-index:2147483647;background:#2563eb;color:#fff;border:0;border-radius:999px;padding:10px 14px;font:600 14px/1 system-ui,Segoe UI,Arial;cursor:pointer;opacity:.9}
  body{padding-bottom:220px}