/* Общие стили */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

/* Шапка */
.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e0e0e0;
  text-align: center;
  padding: 40px 20px;
}

.site-header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
  color: #222;
}

.subtitle {
  font-size: 1rem;
  color: #666;
}

/* Навигация */
.main-nav ul {
  display: flex;
  justify-content: center;
  gap: 25px;
  list-style: none;
  margin-top: 25px;
}

.main-nav a {
  text-decoration: none;
  color: #0077cc;
  font-weight: 500;
  transition: color 0.3s;
}

.main-nav a:hover {
  color: #005fa3;
}

/* Основной контент */
.intro h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 25px;
  color: #222;
}

.features {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 20px;
}

.features li {
  margin-bottom: 15px;
}

.highlight-link {
  display: inline-block;
  margin-top: 20px;
  text-decoration: none;
  color: #ffffff;
  background-color: #0077cc;
  padding: 10px 20px;
  border-radius: 6px;
  transition: background-color 0.3s;
}

.highlight-link:hover {
  background-color: #005fa3;
}

/* Подвал */
.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
}

.site-footer a {
  color: #0077cc;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

/* Адаптивность */
@media (max-width: 768px) {
  .main-nav ul {
    flex-direction: column;
    gap: 15px;
  }
}