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

body {
    font-family: Arial, sans-serif;
    line-height: 1.5;
    color: #222;
}

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

.header {
    background: #111;
    color: #fff;
}

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

.logo {
    font-weight: bold;
    font-size: 20px;
}

.nav a {
    color: #fff;
    margin: 0 10px;
    text-decoration: none;
}

.header-mail {
    color: #fff;
}

.hero {
    background: url('hero.jpg') center/cover no-repeat;
    color: #fff;
    text-align: center;
    padding: 100px 20px;
}

.hero h1 {
    font-size: 32px;
    margin-bottom: 15px;
    color: black;
}

.btn {
    display: inline-block;
    background: #2e7d32;
    color: #fff;
    padding: 12px 20px;
    text-decoration: none;
    margin-top: 15px;
}

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

.card {
    border: 1px solid #ddd;
    padding: 20px;
    text-decoration: none;
    color: #000;
}

.advantages {
    background: #f5f5f5;
}

.adv {
    padding: 20px;
}

.selection {
    text-align: center;
}

.form {
    margin-top: 20px;
}

.form input {
    padding: 10px;
    margin: 5px;
    width: 200px;
    max-width: 100%;
}

.cta {
    background: #2e7d32;
    color: #fff;
    text-align: center;
    padding: 60px 20px;
}

.footer {
    background: #111;
    color: #fff;
    text-align: center;
}