body {
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Align to the top */
    min-height: 100vh;
    padding-top: 50px;
    margin: 0;
}

.how-to-work-container {
    max-width: 800px;
    width: 90%;
    text-align: center;
}

#show-guide-btn {
    background-color: #007bff;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 30px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

#show-guide-btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

#guide-content {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    text-align: left;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

#guide-content:not(.hidden) {
    opacity: 1;
    transform: translateY(0);
}

.hidden {
    display: none;
}

h1 {
    color: #333;
    font-size: 2.5em;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

h2 {
    color: #007bff;
    font-size: 1.8em;
    margin-top: 30px;
    margin-bottom: 15px;
}

p, li {
    font-size: 1.1em;
    line-height: 1.7;
    color: #555;
}

ol {
    padding-left: 20px;
}

ol > li {
    margin-bottom: 20px;
}

ul {
    padding-left: 25px;
    margin-top: 10px;
}

ul > li {
    margin-bottom: 8px;
    list-style-type: disc;
}

strong {
    color: #333;
}