.account-card{max-width:640px;margin:2rem 0}label{display:block;margin:1rem 0 .5rem}input{display:block;width:100%;padding:1rem;border:1px solid #596575;border-radius:8px;background:#10151c;color:#eef3f8;font:inherit}button{cursor:pointer;min-height:44px;margin:.75rem .5rem .5rem 0}button:disabled{opacity:.5;cursor:not-allowed}.account-toolbar{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.account-toolbar h2{margin-right:auto}.student-layout{display:grid;grid-template-columns:minmax(220px,320px) 1fr;gap:1.5rem;margin:2rem 0}#course-list button{display:block;width:100%;text-align:left;padding:.7rem}#course-list h3{font-size:1rem;margin-top:1.5rem}#lesson p{white-space:pre-line}[hidden]{display:none!important}@media(max-width:760px){.student-layout{grid-template-columns:1fr}.account-toolbar{gap:.5rem}.page h1{font-size:clamp(2.5rem,10vw,4rem)}}#course-list{display:block;position:static;inset:auto;padding:0;background:transparent;border:0;max-height:70vh;overflow:auto}

#lesson fieldset{border:1px solid #596575;padding:1rem}#lesson input[type=radio]{display:inline-block;width:auto;margin-right:.6rem}#lesson legend{padding:.4rem}#lesson h3{line-height:1.3}

.follow-video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#080d14;border:1px solid #637486;border-radius:12px;margin:20px 0}