body{margin:0;background:#0b0b0f;color:white;font-family:Arial}header{padding:18px;display:flex;justify-content:space-between;border-bottom:1px solid #333}main{max-width:650px;margin:auto;padding:16px}.card{background:#15151b;padding:18px;border-radius:14px;margin-bottom:16px}input,button{width:100%;padding:13px;margin:7px 0;box-sizing:border-box;border-radius:9px}input{background:#09090d;color:white;border:1px solid #444}button{background:white;border:0;font-weight:bold}.video{width:100%;border-radius:10px;margin-top:10px}.caption{padding:8px 0;color:#ddd}p{color:#aaa}