.kb{position:fixed;bottom:0;left:0;right:0;background:#d1d5db;padding:clamp(4px,1vw,8px) clamp(2px,0.5vw,5px) env(safe-area-inset-bottom,15px);z-index:9999;display:none}.kb.show{display:block}
.kr{display:flex;gap:clamp(4px,1vw,8px);margin-bottom:clamp(4px,1vw,8px);justify-content:center}
.kk{flex:1;max-width:none;height:clamp(30px,6vh,38px);background:#fff;border-radius:clamp(6px,1.5vw,10px);display:flex;align-items:center;justify-content:center;font-size:clamp(20px,5vw,26px);font-weight:500;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.15);user-select:none;color:#333}.kk:active{background:#dcdcdc;transform:scale(.95)}
.kk.sp{background:#9e9e9e;color:#fff;font-size:clamp(14px,3.5vw,18px)}.kk.dn{background:#1890ff;color:#fff;font-size:clamp(14px,3.5vw,18px)}.kk.space{flex:3}