:root {
    color: #374151;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    line-height: 1.5;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #fff;
}

a {
    color: #2563eb;
    text-decoration: none;
}

a:hover {
    color: #dc2626;
    text-decoration: underline;
}

.page {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.site-header,
.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-color: #d1d5db;
}

.site-header {
    margin-bottom: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid #d1d5db;
}

.logo {
    color: #dc2626;
    font-size: 1.5rem;
    font-weight: 700;
}

.site-nav ul {
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav a {
    transition: color 150ms ease;
}

.section {
    margin-bottom: 3rem;
}

.section-title {
    margin: 0 0 1rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid #e5e7eb;
    color: #1f2937;
    font-size: 1.5rem;
    font-weight: 600;
}

.lead {
    font-size: 1.125rem;
    line-height: 1.75;
}

.system-requirements {
    margin-bottom: 3rem;
}

.system-requirements p,
.feature-card p {
    margin: 0 0 .5rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 1.5rem;
    border: 1px solid #e5e7eb;
    border-radius: .5rem;
    background: #f9fafb;
}

.feature-card h2 {
    margin: 0 0 1rem;
    color: #dc2626;
    font-size: 1.25rem;
    font-weight: 600;
}

.feature-card img {
    float: left;
    width: 4rem;
    height: 4rem;
    margin: 0 1rem .5rem 0;
}

.download-list {
    margin: 0 0 2rem;
    padding-left: 1.5rem;
}

.download-list li + li {
    margin-top: .5rem;
}

.site-footer {
    margin-top: 2rem;
    padding: 2rem 0;
    border-top: 1px solid #d1d5db;
}

.metrics-pixel {
    position: absolute;
    left: -9999px;
}

.changes {
    max-width: 960px;
    padding-top: 2rem;
    padding-bottom: 3rem;
}

.changes h1 {
    margin: 0 0 2rem;
    color: #1f2937;
    font-size: 2rem;
}

.changes h2 {
    margin: 2.5rem 0 1rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid #e5e7eb;
    color: #1f2937;
    font-size: 1.5rem;
}

.changes ul {
    padding-left: 1.5rem;
}

.changes li {
    margin: .4rem 0;
}

.changes li::marker {
    color: #dc2626;
}

@media (max-width: 767px) {
    .site-header,
    .site-footer,
    .site-nav ul {
        flex-direction: column;
    }

    .site-header,
    .site-footer {
        gap: 1rem;
    }

    .site-nav ul {
        gap: .5rem;
        text-align: center;
    }

    .features {
        grid-template-columns: 1fr;
    }
}