:root {
    --background: #ffffff;
    --surface: #f5f3f8;
    --text: #1d1b20;
    --secondary: #5f5a66;
    --accent: #7a4bc6;
    --border: #e6e1ec;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #141018;
        --surface: #1f1a26;
        --text: #f3eff7;
        --secondary: #a9a2b3;
        --accent: #a98be6;
        --border: #2e2738;
        color-scheme: dark;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: 680px;
    margin: 0 auto;
    padding: 72px 20px 48px;
}

a {
    color: var(--accent);
}

.hero {
    text-align: center;
}

.icon {
    width: 128px;
    height: 128px;
    border-radius: 28px;
    box-shadow: 0 12px 32px rgb(0 0 0 / 0.25);
}

h1 {
    margin: 24px 0 8px;
    font-size: 44px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.tagline {
    margin: 0 auto;
    max-width: 30em;
    color: var(--secondary);
    font-size: 20px;
}

.availability {
    margin: 24px 0 0;
    font-weight: 600;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 12px;
    margin: 56px 0 0;
    padding: 0;
    list-style: none;
}

.features li {
    padding: 18px 20px;
    border-radius: 16px;
    background: var(--surface);
}

.features strong {
    display: block;
    margin-bottom: 4px;
}

.features span {
    color: var(--secondary);
    font-size: 15px;
}

.document h1 {
    font-size: 36px;
}

.document h2 {
    margin: 36px 0 8px;
    font-size: 22px;
}

.document .updated {
    color: var(--secondary);
}

.back {
    display: inline-block;
    margin-bottom: 24px;
    text-decoration: none;
}

footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--secondary);
    font-size: 15px;
    text-align: center;
}

footer a {
    margin: 0 10px;
}