body {
  margin: 0;
  padding: 20px;
  font-family: 'Helvetica Neue', sans-serif;
  background: #f9f9f9;
  color: #222;
}

main {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 20px;
  padding: 40px 20px;
}

@media (max-width: 768px) {
  main {
    flex-direction: column;
    align-items: center;
  }
}

#content-area {
  max-width: 600px;
  width: 100%;
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

h2 {
  font-size: 28px;
  text-align: center;
  margin-bottom: 20px;
}

h3 {
  font-size: 22px;
  margin-top: 10px;
}

p {
  font-size: 16px;
  line-height: 1.5;
}

img {
  max-width: 100%;
  border-radius: 12px;
  margin: 20px 0;
}

/* Ad Slots */
#ad-top-banner,
#ad-sidebar-left,
#ad-middle,
#ad-inbetween,
#ad-bottom,
#ad-sticky-footer {
  background: #eee;
  text-align: center;
  padding: 10px;
  margin: 10px 0;
}

#ad-sidebar-left {
  width: 160px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  #ad-sidebar-left {
    display: none;
  }
}