body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin:0;
  padding:0;
  background:linear-gradient(to bottom, #e6f0fa, #ffffff);
  color:#333;
}
nav {
  background:#005baa;
}
nav ul {
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:1em;
  padding:1em;
  margin:0;
}
nav a {
  color:white;
  text-decoration:none;
  font-weight:bold;
  transition:color 0.2s ease;
}
nav a:hover {
  color:#ffa500;
}
section {
  padding:3em 1em;
  max-width:1000px;
  margin:auto;
  opacity:1;
  transform:translateY(20px);
  transition:opacity 1s ease, transform 1s ease;
}
section.visible {
  opacity:1;
  transform:translateY(0);
}
section img {
  max-width:100%;
  height:auto;
  border-radius:6px;
  margin-top:1em;
  box-shadow:0 0 10px rgba(0,0,0,0.1);
}
h1, h2, h3 {
  color:#005baa;
}
ul {
  padding-left:1.2em;
}
ul li {
  margin-bottom:0.5em;
}
footer {
  text-align:center;
  padding:1em;
  background:#005baa;
  color:white;
}
button, input[type="submit"] {
  background:#ffa500;
  color:white;
  border:none;
  padding:0.7em 1.5em;
  border-radius:4px;
  cursor:pointer;
  font-weight:bold;
  transition:background 0.3s ease;
}
button:hover, input[type="submit"]:hover {
  background:#e69500;
}
@media (max-width:768px) {
  nav ul {
    flex-direction:column;
  }
}


footer a, section a {
  color: #ffa500;
  font-weight: bold;
  text-decoration: none;
}
footer a:hover, section a:hover {
  text-decoration: underline;
}


footer {
  background: #003366;
  color: white;
  padding: 2em 1em;
  text-align: center;
}
footer p {
  margin: 0.8em 0;
  font-size: 1em;
}
footer a {
  color: #ffa500;
}
footer a:hover {
  text-decoration: underline;
}
footer strong {
  display: block;
  margin-bottom: 0.4em;
  font-size: 1.1em;
}


header {
  text-align: center;
  padding: 1em 0;
  background: white;
}
header img.logo {
  height: 60px;
}