:root { color-scheme: light; --ink: #202124; --muted: #696b70; --line: #e7e8ea; }
* { box-sizing: border-box; }
body { margin: 0 auto; max-width: 840px; padding: 0 28px; background: #fff; color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; line-height: 1.95; overflow-wrap: anywhere; }
header { padding: 26px 0; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); text-decoration: none; font-size: 18px; font-weight: 800; letter-spacing: .12em; }
.brand span { margin-left: 10px; font-size: 10px; font-weight: 500; color: var(--muted); letter-spacing: .16em; }
main { padding: 46px 0 28px; }
.eyebrow { font-size: 10px; font-weight: 700; letter-spacing: .2em; color: var(--muted); margin: 0 0 8px; }
h1 { font-size: clamp(24px, 4.5vw, 34px); line-height: 1.55; letter-spacing: -.025em; margin: 0 0 10px; }
h2 { font-size: 18px; line-height: 1.6; margin: 36px 0 12px; padding-left: 12px; border-left: 3px solid var(--ink); }
p, li { font-size: 15px; }
.meta { color: var(--muted); font-size: 12px; margin-bottom: 30px; }
a { color: #245c98; text-underline-offset: 3px; }
a:hover { color: #123a66; }
a:focus-visible { outline: 2px solid #245c98; outline-offset: 4px; }
code { font-size: 13px; background: #f4f5f6; padding: 2px 5px; }
footer { border-top: 1px solid var(--line); padding: 24px 0 32px; margin-top: 24px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 12px; }
footer p { font-size: 11px; color: var(--muted); margin-bottom: 0; }
@media (max-width: 540px) { body { padding: 0 20px; } main { padding-top: 30px; } h2 { font-size: 17px; } .brand { font-size: 16px; } }