:root { --fg: #1f2328; --muted: #59636e; --bg: #ffffff; --accent: #1a73e8; --line: #d1d9e0; }
@media (prefers-color-scheme: dark) { :root { --fg: #e6edf3; --muted: #9198a1; --bg: #0d1117; --accent: #4493f8; --line: #3d444d; } }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; color: var(--fg); background: var(--bg); line-height: 1.75; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 1.8rem; line-height: 1.4; } h2 { margin-top: 2.5rem; font-size: 1.25rem; }
a { color: var(--accent); }
.lead { color: var(--muted); font-size: 1.05rem; }
.cta { display: inline-block; margin-top: 8px; padding: 12px 20px; border-radius: 8px; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; }
table { width: 100%; border-collapse: collapse; } th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { width: 30%; } .key { font-family: ui-monospace, monospace; font-size: 1.4rem; letter-spacing: .05em; }
footer { margin-top: 48px; color: var(--muted); font-size: .9rem; }