```css
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #FF5722;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    justify-content: center;
}

.container {
    max-width: 700px;
    width: 90%;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
    color: #333;
    font-size: 1.5rem;
    margin: 10px 0;
}

label, p {
    margin-top: 10px;
    font-weight: bold;
    color: #333;
    font-size: 0.9rem;
}

.input-wrapper {
    display: flex;
    align-items: center;
    width: 100%;
}

.input-wrapper span {
    font-size: 18px;
    margin-right: 5px;
}

input[type="number"], select {
    width: 100%;
    padding: 10px;
    margin: 5px 0 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    outline: none;
    font-size: 1rem;
}

button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    display: block;
    margin: 15px auto;
}

button:hover {
    background-color: #0056b3;
}

.result {
    margin-top: 20px;
    font-weight: bold;
    font-size: 1.5rem;
    color: #333;
    text-align: center;
}

.income-group, .debt-group {
    background-color: #f0f0f0;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.page {
    display: none;
}

.page-active {
    display: block;
}

.disclaimer {
    margin-top: 20px;
    font-size: 0.8rem;
    color: #555;
    border-top: 1px solid #ccc;
    padding-top: 10px;
    line-height: 1.4;
}

.language-switch, .home-button {
    position: absolute;
    top: 10px;
    padding: 10px;
    background-color: #007BFF;
    color: #fff;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.9rem;
}

.language-switch {
    right: 10px;
}

.home-button {
    left: 10px;
}

.language-switch:hover, .home-button:hover {
    background-color: #0056b3;
}

.fireworks {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

@keyframes fireworks-animation {
    0% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.fireworks div {
    width: 50px;
    height: 50px;
    background: url('fireworks.png') no-repeat center center / contain;
    animation: fireworks-animation 1s infinite;
    margin: 0 10px;
}

@media only screen and (max-width: 600px) {
    .container {
        padding: 15px;
        max-width: 95%;
    }

    h1, button, .language-switch, .home-button {
        font-size: 1rem;
    }

    input[type="number"], select {
        width: 95%;
    }
}
```