body{max-width:58rem;margin:2rem auto;padding:0 1rem;font:1rem/1.6 system-ui,sans-serif;color:#222}img,video,iframe{max-width:100%}iframe{width:100%;height:70vh;border:1px solid #bbb}.card{display:block;margin:1rem 0;padding:1rem;border:1px solid #ddd}.card img{width:15rem;height:auto}small{color:#555}