:root {
    color-scheme: light dark;
    --text: #1d1d1f;
    --secondary: #6e6e73;
    --background: #ffffff;
    --card: #f5f5f7;
    --separator: #d2d2d7;
}

@media (prefers-color-scheme: dark) {
    :root {
        --text: #f5f5f7;
        --secondary: #a1a1a6;
        --background: #000000;
        --card: #1c1c1e;
        --separator: #38383a;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.55;
    color: var(--text);
    background: var(--background);
    -webkit-text-size-adjust: 100%;
}

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 20px 64px;
}

header.site {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

header.site a.brand {
    font-weight: 600;
    font-size: 19px;
    color: var(--text);
    text-decoration: none;
}

nav a {
    color: var(--secondary);
    text-decoration: none;
    margin-left: 16px;
    font-size: 15px;
}

nav a:hover,
a:hover {
    text-decoration: underline;
}

a {
    color: inherit;
}

h1 {
    font-size: 34px;
    line-height: 1.2;
    margin: 0 0 8px;
}

h2 {
    font-size: 22px;
    margin: 40px 0 8px;
}

h3 {
    font-size: 17px;
    margin: 24px 0 4px;
}

p.meta,
.secondary {
    color: var(--secondary);
}

.lang-switch {
    display: inline-flex;
    gap: 8px;
    margin: 16px 0 8px;
}

.lang-switch a {
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--card);
    text-decoration: none;
    font-size: 15px;
}

.card {
    background: var(--card);
    border-radius: 16px;
    padding: 4px 20px;
    margin: 16px 0;
}

hr {
    border: none;
    border-top: 1px solid var(--separator);
    margin: 56px 0;
}

ul {
    padding-left: 22px;
}

li {
    margin: 4px 0;
}

footer {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px 40px;
    font-size: 14px;
    color: var(--secondary);
}

footer a {
    color: var(--secondary);
    margin-right: 16px;
}

.hero {
    text-align: center;
    padding-top: 40px;
}

.hero p {
    font-size: 21px;
    color: var(--secondary);
    margin-top: 4px;
}