body {
    background: #101124;
    color: #e0e6f0;
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    min-height: 100vh;
}
header {
    background: linear-gradient(90deg, #0a1a2f 60%, #1a1a40 100%);
    padding: 2rem 0 1rem 0;
    text-align: center;
    box-shadow: 0 2px 16px 0 #0ff2ff33;
}
header h1 {
    color: #3ab0ff;
    font-size: 2.8rem;
    margin: 0;
    letter-spacing: 2px;
}
h2, h3, h4, h5 {
    font-weight: bold;
}
main h2, main h3, main h4, main h5 {
    margin-top: 2.2rem;
    margin-bottom: 1.1rem;
}
main p, main ul, main ol, main li {
    margin-bottom: 1.1rem;
    line-height: 1.7;
}
main ul, main ol {
    padding-left: 2.2rem;
    margin-bottom: 1.1rem;
}
main ul li, main ol li {
    margin-bottom: 0.3rem;
}
main img {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}
hr {
    margin: 2.5rem 0 !important;
}
.download-section {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 3rem 0 2rem 0;
}
.download-btn {
    background: #3ab0ff;
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 1.2rem 2.5rem;
    font-size: 1.3rem;
    font-family: inherit;
    cursor: pointer;
    box-shadow: 0 4px 24px 0 #3ab0ff44;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    justify-content: center;
    text-decoration: none;
}
.download-btn:hover {
    transform: scale(1.07);
    box-shadow: 0 6px 32px 0 #3ab0ff88;
    background: #3498db;
}
.download-btn img {
    height: 1.5em;
    width: 1.5em;
    vertical-align: middle;
}
section.contact {
    background: #181a2b;
    margin: 0 auto;
    max-width: 600px;
    border-radius: 18px;
    box-shadow: 0 2px 24px 0 #00ffb366;
    padding: 2rem 1.5rem 2.5rem 1.5rem;
    text-align: center;
}
section.contact h2 {
    color: #3ab0ff;
    margin-bottom: 1.2rem;
}
.contact-btns {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.2rem;
}
.contact-btn {
    background: #00ffb3;
    color: #181a2b;
    border: none;
    border-radius: 10px;
    padding: 0.5rem 1.2rem;
    font-size: 1.08rem;
    font-family: inherit;
    font-weight: normal;
    cursor: pointer;
    box-shadow: 0 2px 12px 0 #00ffb344;
    transition: background 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    justify-content: center;
    text-decoration: none;
    min-width: unset;
    width: 130px;
    max-width: 150px;
    height: 2.5rem;
}
.contact-btn b, .contact-btn strong {
    font-weight: normal !important;
}
.contact-btn:hover {
    background: #3ab0ff;
    color: #fff;
    box-shadow: 0 4px 20px 0 #3ab0ff88;
}
.contact-btn img {
    height: 1.5em;
    width: 1.5em;
    vertical-align: middle;
}
.contact-name {
    font-size: 1.5rem;
    font-weight: bold;
    color: #3ab0ff;
    text-align: center;
    margin-bottom: 0.7rem;
}
@media (max-width: 600px) {
    .download-section {
        flex-direction: column;
        gap: 1.2rem;
    }
    section.contact {
        padding: 1.2rem 0.5rem 1.5rem 0.5rem;
    }
}