body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to bottom right, #66ffff, #ccffff);
    color: #003333;
    text-align: center;
}

header {
    background-color: #008080;
    padding: 2rem;
    color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

header img {
    width: 160px;
    height: 160px;
    border-radius: 10px;
    margin-bottom: 1rem;
}

header h1 {
    margin: 0;
    font-size: 2.2rem;
    letter-spacing: 0.5px;
    line-height: 1.3; /* Adjusted for two lines */
}

/* Style for the (HLIX) ticker symbol */
header h1 .ticker {
    font-size: 0.67em; /* Approximately 2/3 of the parent h1 font size */
    font-weight: normal; /* Make the ticker not bold */
    font-family: 'Courier New', Courier, monospace; /* Use a mono-spaced font */
}

/* Style for the "Blockchain Cryptocurrency" subtitle */
header h1 .subtitle {
    font-size: 0.8em; /* Example: slightly smaller, adjust as needed */
    /* letter-spacing: 0.2px; /* Optional: adjust letter spacing if needed */
    /* display: block; /* Ensures it behaves as a block, works with <br> too */
    /* margin-top: 0.2em; /* Optional: adjust spacing from the line above */
}


.tagline {
    font-style: italic;
    font-size: 1.3rem;
    margin-top: 0.5rem;
}

main {
    padding: 2rem;
}

.download-btn {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    background-color: #004d4d;
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #006666;
}

hr {
    margin: 2rem auto;
    width: 60%;
    border: 0;
    border-top: 2px dashed #008080;
}

footer {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: #005555;
}

footer a {
    color: #005555;
    text-decoration: none;
    margin: 0 0.5rem;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 900px) {
    header h1 {
        font-size: 1.6rem; /* This will also affect the em units for ticker and subtitle */
    }

    .tagline {
        font-size: 1rem;
    }

    hr {
        width: 80%;
    }

    .download-btn {
        padding: 0.6rem 1.2rem;
    }
}