main {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 5rem auto;
    max-width: 1000px;
    padding: 0 1rem;
    font-family: 'Open Sans', sans-serif;
    background-color: #fff;
    padding: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 12px;
    flex-wrap: wrap;
}
main > div.left, main > div.right {
    flex: 1 1 100%;
}
main > div.left h1 {
    font-family: 'Ribeye', cursive;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    text-align: center;
    color: #7fb196;
}
main > div.left img {
    width: 100%;
    max-width: 800px;
    border-radius: 1rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    object-fit: cover;
}
main > div.right {
    flex: 1 1 55%;
    color: #333;
    border-radius: 1rem;
    padding-left: 1rem;
    box-sizing: border-box;
}
main > div.right p b {
    font-weight: 700;
}
form {
    margin-top: 2rem;
    display: flex;
    flex-direction: row;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}
form label {
    font-weight: 600;
    font-size: 1.1rem;
}
form input[type="email"] {
    flex: 1 1 auto;
    max-width: 300px;
    padding: 0.6rem 1rem;
    font-size: 1rem;
    border-radius: 12px;
    border: 1px solid #ccc;
    outline: none;
    font-family: 'Open Sans', sans-serif;
}
form button {
    padding: 0.6rem 1.5rem;
    font-size: 1rem;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-family: 'Ribeye', cursive;
    background-color: #7fb196;
    color: white;
    border: none;
}
form button:hover {
    background-color: #689e83;
}
p.success {
    color: #2e7d32;
    font-weight: 700;
    margin-top: 1rem;
}
p.error {
    color: #c62828;
    font-weight: 700;
    margin-top: 1rem;
}
@media (min-width: 600px) {
    main > div.left {
        flex: 1 1 45%;
    }
    main > div.right {
        flex: 1 1 50%;
        padding-left: 2rem;
    }
}
@media (max-width: 480px) {
    form {
        flex-direction: column;
        align-items: stretch;
    }
    form input[type="email"], form button {
        max-width: 100%;
        flex: 1 1 100%;
    }
    form button {
        margin-top: 0.5rem;
    }
}