body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: #f6f6f6;
  color: #333;
}
.header-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}
.header-text {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: white;
  text-shadow: 1px 1px 5px rgba(0,0,0,0.7);
}
header nav {
  background: #4caf50;
  padding: 1em;
  text-align: center;
}
header nav a {
  margin: 0 1em;
  color: white;
  text-decoration: none;
  font-weight: bold;
}
.section {
  padding: 2em;
  max-width: 960px;
  margin: auto;
  background: white;
  margin-bottom: 1em;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  margin-top: 1em;
}
.gallery img {
  width: calc(33% - 1em);
  border-radius: 10px;
}
.flex {
  display: flex;
  align-items: center;
  gap: 1em;
}
.portrait {
  width: 180px;
  border-radius: 50%;
}
footer {
  text-align: center;
  padding: 1em;
  background: #333;
  color: white;
}
.button {
  background: #ff9800;
  color: white;
  border: none;
  padding: 0.7em 1.2em;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  text-decoration: none;
  display: inline-block;
  margin-top: 1em;
}