body {
    margin: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: #f8fafc;
}
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}
.hero {
    background: white;
    padding: 48px 32px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    margin-bottom: 24px;
}
h1, h2 {
    margin-top: 0;
    color: #111827;
}
h1 {
    font-size: 42px;
    margin-bottom: 12px;
}
.subtitle {
    font-size: 22px;
    color: #374151;
    margin-bottom: 24px;
}
.buttons {
    margin-top: 24px;
}
.button {
    display: inline-block;
    padding: 12px 20px;
    margin-right: 12px;
    margin-bottom: 12px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
}
.button-primary {
    background: #2563eb;
    color: white;
}
.button-secondary {
    background: #e5e7eb;
    color: #111827;
}
.card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
    margin-bottom: 24px;
}
ul {
    padding-left: 22px;
}
footer {
    font-size: 14px;
    color: #6b7280;
    padding: 10px 0 30px;
}
.prototype {
    display: flex;
    gap: 40px;
    align-items: center;
}

.prototype-images {
    display: flex;
    gap: 14px;
}

.prototype-images img {
    width: 110px;
    border-radius: 10px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

.prototype-text {
    max-width: 520px;
}

.prototype-text h2 {
    margin-top: 0;
    margin-bottom: 14px;
}

.prototype-text p {
    color: #374151;
    margin-bottom: 12px;
}

@media (max-width: 768px) {

    .prototype {
        flex-direction: column;
        align-items: flex-start;
    }

    .prototype-images img {
        width: 90px;
    }
}
.footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
    font-size: 14px;
    color: #6b7280;
}

.footer-links {
    margin-bottom: 10px;
}

.footer-links a {
    margin-right: 15px;
    text-decoration: none;
    color: #374151;
}

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

.footer-note {
    margin-top: 6px;
    font-size: 13px;
    color: #9ca3af;
}