:root { color-scheme: light dark; --bg: #fcf8f2; --paper: #fff; --ink: #352b24; --muted: #75685d; --accent: #a84618; --line: #e6d9c9; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", sans-serif; line-height: 1.9; }
main { max-width: 720px; margin: 64px auto; padding: 0 24px; }
h1 { font-size: clamp(26px, 5vw, 36px); line-height: 1.5; letter-spacing: .04em; }
h2 { font-size: 21px; margin-top: 40px; }
a { color: var(--accent); text-underline-offset: 4px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.icon { border-radius: 23%; }
.lead { font-size: 25px; font-weight: 650; line-height: 1.65; }
.muted, footer { color: var(--muted); font-size: 14px; }
details { padding: 16px 0; border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
.button { display: inline-block; background: var(--accent); color: white; padding: 12px 22px; border-radius: 12px; text-decoration: none; }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 24px; }
@media (max-width: 600px) { main { margin: 32px auto; } }
@media (prefers-color-scheme: dark) { :root { --bg: #201b17; --paper: #2c241e; --ink: #f5ede3; --muted: #c1b2a1; --accent: #f6a476; --line: #504438; } .button { color: #201b17; } }