body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background: #f2f2f2;
    color: #222;
}

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1 {
    margin: 0 0 24px;
    font-size: 32px;
    font-weight: 700;
}

.main-menu {
    margin-bottom: 32px;
}

.main-menu ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-menu a {
    display: block;
    padding: 12px 18px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    background: #fff;
    color: #222;
    text-decoration: none;
    font-size: 16px;
}

.main-menu a:hover,
.main-menu a.active {
    background: #e9e9e9;
}

form {
    max-width: 360px;
}

label {
    display: block;
    margin-bottom: 14px;
}

input {
    display: block;
    box-sizing: border-box;
    width: 100%;
    margin-top: 6px;
    padding: 10px;
    border: 1px solid #cfcfcf;
    border-radius: 4px;
    font-size: 16px;
}

button {
    padding: 10px 16px;
    border: 1px solid #222;
    border-radius: 4px;
    background: #222;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #444;
}