:root {
    --bg: #F3F4F6; --surface: #FFFFFF; --ink: #12151B; --muted: #5B6472;
    --accent: #2E5AAC; --border: #E4E7ED;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #101215; --surface: #181B20; --ink: #E7E9ED; --muted: #A6ACB8;
        --accent: #6E97E0; --border: #31363F;
    }
}
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body { font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main {
    max-width: 760px; margin: 32px auto; padding: 32px 24px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
}
@media (max-width: 800px) { main { margin: 0; border: 0; border-radius: 0; padding: 24px 16px; } }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
header img { width: 48px; height: 48px; }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 0; }
h2 { font-size: 1.15rem; margin-top: 2em; }
.updated { color: var(--muted); font-size: .9rem; margin-top: 0; }
a { color: var(--accent); }
footer { margin-top: 2.5em; padding-top: 1em; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }