/* Общие стили */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  background: linear-gradient(135deg, #b3e5fc, #ffffff);
  color: #333;
}

/* Контейнеры */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Хедер */
header {
  background-color: rgba(0, 123, 255, 0.2);
  padding: 20px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  width: 80px;
  height: auto;
}

nav a {
  margin: 0 15px;
  text-decoration: none;
  color: #0069d9;
  font-weight: bold;
}

nav a.active {
  color: #004080;
}

/* Основные секции */
section {