:root { color-scheme: light; }
* { box-sizing: border-box; }
body { margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; color: #34425b; background: #fff; line-height: 1.7; -webkit-font-smoothing: antialiased; }
.wrap { max-width: 44rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-bottom: 1.5rem; border-bottom: 1px solid #dfe8f3; }
header img { height: 32px; width: auto; display: block; }
h1 { color: #0b1b3d; font-size: clamp(1.8rem, 1.4rem + 1.5vw, 2.4rem); letter-spacing: -0.02em; line-height: 1.15; margin: 2.5rem 0 0.5rem; }
h2 { color: #0b1b3d; font-size: 1.15rem; margin: 2.25rem 0 0.5rem; }
.updated { color: #68758d; font-size: 0.9rem; margin: 0; }
a { color: #0866f5; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid #0866f5; outline-offset: 3px; border-radius: 4px; }
.back { font-size: 0.9rem; font-weight: 600; text-decoration: none; padding: 0.5rem 0; }
footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #dfe8f3; font-size: 0.85rem; color: #68758d; }