.auth-wrap { max-width: 440px; margin: 4rem auto; }
.auth-wrap h1, .academy-main h1 { font-size: 1.6rem; margin-bottom: .5rem; }
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.course-card { display: block; color: inherit; }
.course-card.locked { opacity: .72; }
.padlock { font-size: .85rem; color: var(--text-secondary); }
.module-list { list-style: none; margin: 1rem 0; }
.module-list li { padding: .35rem 0; border-bottom: 1px solid var(--border-color); }
.retry { margin-top: 1rem; }
video.lesson-video { width: 100%; background: #000; }