:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#222;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}body{margin:0;display:flex;min-height:100vh}#app{max-width:1280px;text-align:center;flex:1}section{margin-top:5rem;display:grid;grid-template-columns:repeat(3,1fr);column-gap:1.5rem}.exercise-wrapper{margin:8px 0;display:flex;justify-content:space-between}.exercise-wrapper button{height:100%}.exercise-list{display:flex;flex-direction:column}@media (max-width: 639px){#app{margin:2rem}section{margin-top:5rem;grid-template-columns:1fr;row-gap:1rem}}@media (prefers-color-scheme: dark){:root{color:#ccc;background-color:#1a1a1a}.resource{color:#ccc;background-color:#161616}.resource:hover{border:1px solid #bbb}}