/* Общие настройки */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    line-height: 1.6;
    background-color: #f4f4f9;
    color: #333;
}

/* Навигация */
header {
    background: #2c3e50;
    color: #fff;
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 20px;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: #3498db;
}

/* Секция Hero */
.hero {
    text-align: center;
    padding: 100px 20px;
    background: #fff;
}

.btn {
    display: inline-block;
    background: #3498db;
    color: #fff;
    padding: 10px 25px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
}

/* Сетка карточек */
.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

footer {
    text-align: center;
    padding: 20px;
    background: #2c3e50;
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}