* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}
body {
  background: #f5f7fa;
  color: #333;
  line-height: 1.7;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 15px;
}
.header {
  background: #0f2b46;
  color: white;
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 24px;
  font-weight: bold;
  color: #ff9a00;
}
.nav a {
  color: white;
  margin-left: 25px;
  text-decoration: none;
  cursor: pointer;
}
.nav a.active {
  color: #ff9a00;
  font-weight: bold;
}
.main {
  padding: 40px 0;
  min-height: 75vh;
}
.banner img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 20px;
}
.banner h1 {
  text-align: center;
  color: #0f2b46;
  margin-bottom: 30px;
}
.section {
  margin-bottom: 40px;
}
h1, h2, h3 {
  color: #0f2b46;
  margin-bottom: 15px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
}
.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.full-img {
  width: 100%;
  border-radius: 8px;
  margin: 20px 0;
}
.tags {
  display: flex;
  gap: 12px;
  margin: 20px 0;
}
.tags span {
  background: #ff9a00;
  color: white;
  padding: 8px 16px;
  border-radius: 30px;
}
ul {
  margin-left: 20px;
}
li {
  margin-bottom: 8px;
}
.footer {
  background: #0f2b46;
  color: white;
  text-align: center;
  padding: 30px 0;
}