* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Roboto', sans-serif; background: #f7f9fc; color: #333; line-height:1.6; }
header {
  background: #e6f2ff; /* màu n?n sáng */
  color: #004080;
  text-align: center;
  padding: 20px 10px;
  position: relative;
}
.logo { height: 60px; margin: 0 10px; vertical-align: middle; }
.avatar {
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 3px solid #fff;
  object-fit: cover;
  margin: 15px auto;
  animation: floatAvatar 3s ease-in-out infinite;
}
.name-highlight {
  color: #004080;
  font-weight: bold;
}

.affiliation {
  color: #004080;
  font-size: 1rem;
}
@keyframes floatAvatar {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}
h1 { margin-top: 10px; font-size: 2.2rem; }
nav {
  background: #0066cc;
  display: flex;
  justify-content: center;
  padding: 10px;
  flex-wrap: wrap;
}
nav a {
  color: #fff;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
  transition: color .3s;
}
nav a:hover { color: #ffcc00; }
.container {
  max-width: 1000px;
  margin: 30px auto;
  padding: 0 20px;
}
.section {
  margin-bottom: 40px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease forwards;
}
.section:nth?child(even) { animation-delay: .4s; }
.section:nth?child(odd)  { animation-delay: .2s; }
@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}
.section h2 {
  color: #004080;
  margin-bottom: 15px;
  border-bottom: 2px solid #004080;
  padding-bottom: 5px;
}
ul { list-style: disc inside; }
ul li { margin-bottom: 8px; }
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}
th, td {
  padding: 8px;
  border: 1px solid #ccc;
}
th {
  background: #e6f0ff;
  color: #003366;
}
footer {
  background: #003366;
  color: #fff;
  text-align: center;
  padding: 15px;
  margin-top: 50px;
}