/* Tahmeer Tech — static lesson & lab pages */
.content-sheet{max-width:880px;margin:0 auto;padding:0;overflow:hidden;border-radius:24px}
.content-hero{position:relative}
.content-hero>img{width:100%;height:300px;object-fit:cover;display:block}
.content-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.72))}
.content-head{position:absolute;left:0;right:0;bottom:0;padding:26px 30px;z-index:2}
.content-head h1{color:#fff;font-size:clamp(1.5rem,3.4vw,2.3rem);margin:10px 0 8px;line-height:1.2}
.content-body{padding:30px}
.content-nav{display:flex;gap:12px;flex-wrap:wrap;padding:0 30px 30px}
@media (max-width:640px){.content-hero>img{height:210px}.content-body{padding:22px}.content-nav{padding:0 22px 24px}}