@media(max-width:640px){.mkk{padding:10px;font-size:16.5px}.mkk-card{padding:14px}.mkk-nav.sticky{margin-inline:-14px;margin-bottom:-14px;padding-inline:14px}.mkk-grid2,.mkk-grid3{grid-template-columns:1fr}.mkk-grid4{grid-template-columns:repeat(2,1fr)}.mkk-hero{padding:16px}.mkk-hero h1,.mkk-hero h2{font-size:22px}.mkk-prompt{font-size:18px}.mkk-big{font-size:50px}.mkk-hbar{grid-template-columns:96px 1fr 44px}.mkk-loco{width:72px;height:62px}.mkk-top{padding:8px 10px;gap:8px}.mkk-brand{font-size:18px}.mkk-brand i{width:32px;height:32px}.mkk .mkk-brand .mkk-logo{width:38px!important;height:38px!important}.mkk-map{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}.mkk-map::-webkit-scrollbar{display:none}.mkk-btn{padding:11px 16px;min-height:46px}.mkk-nav .mkk-btn{flex:1 1 auto;justify-content:center}.mkk-nav .mkk-sp{display:none}.mkk-opt{padding:12px 14px;font-size:17px;min-height:52px}.mkk-blank input{width:110px;font-size:21px}.mkk-steps span{min-width:10px}.mkk-qbar{padding:8px 10px}.mkk-lessons{grid-template-columns:1fr}.mkk-numgrid{font-size:11.5px;gap:2px}.mkk-numgrid span{padding:2px 0}}@media(prefers-reduced-motion:reduce){.mkk *{animation:none!important;transition:none!important}}