:root {
    color-scheme: light;
    --fg: #202124;
    --muted: #5f6368;
    --line: #dadce0;
    --code: #f6f8fa;
    --link: #185abc;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    color: var(--fg);
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

header {
    border-bottom: 1px solid var(--line);
    background: #fff;
}

.header-content,
main {
    width: min(1080px, calc(100% - 40px));
    margin: 0 auto;
}

.header-content { padding: 18px 0 14px; }

.site-title {
    margin: 0;
    font-size: 22px;
}

.site-title a { color: inherit; text-decoration: none; }

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    margin-top: 10px;
    font-size: 14px;
}

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

nav a { text-decoration: none; }
nav a:hover { text-decoration: underline; }

main { padding: 32px 0 72px; }

h1 { margin: 0 0 20px; font-size: 34px; }
h2 { margin: 38px 0 12px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 24px; }
h3 { margin: 26px 0 10px; font-size: 18px; }

p, li { font-size: 15px; }

code {
    padding: 2px 5px;
    border-radius: 4px;
    background: var(--code);
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.92em;
}

pre {
    overflow: auto;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--code);
}

table { width: 100%; margin: 16px 0; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f1f3f4; }

.lead { color: var(--muted); font-size: 17px; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin: 20px 0;
}

.card {
    display: block;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: inherit;
    text-decoration: none;
}

.card:hover { border-color: var(--link); }
.card strong { display: block; margin-bottom: 5px; color: var(--link); }
.card span { color: var(--muted); font-size: 14px; }

.page-links {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 48px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.notice { padding: 12px 14px; border-left: 4px solid #4285f4; background: #f8fbff; }

@media print {
    header { display: none; }
    main { width: auto; margin: 0 18mm; padding: 0; }
    .page-links { display: none; }
}