:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.catalog{padding:16px;max-width:800px;margin:0 auto;min-height:100vh;background:var(--tg-theme-bg-color, #1a1a2e);color:var(--tg-theme-text-color, #eee)}.catalog-title{font-size:1.8rem;font-weight:700;margin-bottom:24px;background:linear-gradient(90deg,#6c63ff,#48c6ef);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.catalog-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:80vh;gap:16px;color:var(--tg-theme-hint-color, #aaa)}.spinner{width:40px;height:40px;border:4px solid rgba(108,99,255,.3);border-top-color:#6c63ff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.catalog-error{color:#ff6b6b;text-align:center;padding:32px}.course-grid{display:grid;gap:16px}.course-card{background:#ffffff0d;border:1px solid rgba(108,99,255,.2);border-radius:16px;padding:20px;transition:transform .2s ease,box-shadow .2s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.course-card:hover{transform:translateY(-2px);box-shadow:0 8px 32px #6c63ff40}.course-card__header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.course-card__title{font-size:1.1rem;font-weight:600;color:var(--tg-theme-text-color, #eee);flex:1;margin-right:12px}.course-card__price{font-size:1rem;font-weight:700;color:#6c63ff;white-space:nowrap}.course-card__desc{font-size:.9rem;color:var(--tg-theme-hint-color, #aaa);margin-bottom:16px;line-height:1.5}.course-card__actions{display:flex;gap:8px;flex-wrap:wrap}.btn{padding:10px 20px;border:none;border-radius:10px;font-size:.9rem;font-weight:600;cursor:pointer;transition:opacity .2s ease,transform .1s ease}.btn:active{transform:scale(.97)}.btn--primary{background:linear-gradient(135deg,#6c63ff,#48c6ef);color:#fff;flex:1}.btn--primary:hover{opacity:.9}.btn--stars{background:linear-gradient(135deg,#f7971e,#ffd200);color:#1a1a2e;flex:1}.btn--stars:hover{opacity:.9}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(prefers-reduced-motion:no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}