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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #1a1a1a;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
}

.logo {
    height: 64px;
    width: auto;
}

.contact-btn {
    text-decoration: none;
    color: #fff;
    background-color: #1a1a1a;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    transition: background-color 0.2s;
}

.contact-btn:hover {
    background-color: #333;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 40px;
}

blockquote {
    max-width: 420px;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
}

blockquote cite {
    display: block;
    margin-top: 4px;
    font-style: normal;
}

footer {
    text-align: center;
    padding: 24px 40px;
    font-size: 13px;
    color: #666;
}

@media (max-width: 600px) {
    header {
        padding: 16px 20px;
    }

    .logo {
        height: 56px;
    }

    .contact-btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    main {
        padding: 24px 20px;
    }

    blockquote {
        font-size: 13px;
    }

    footer {
        padding: 20px;
        font-size: 12px;
    }
}