:root { --ink: #1c1c1c; --blue: #203CC4; --orange: #EB3700; --paper: #F4F0E6; --card: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --ink: #f2efe8; --blue: #9fb0ff; --paper: #15161a; --card: #22242a; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header, main, footer { max-width: 680px; margin: 0 auto; padding: 24px 16px; }
header img { display: block; max-width: 60vw; height: auto; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.15; margin: 0.5em 0; }
h2 { margin-top: 2em; }
.lead { font-size: 1.2rem; }
.notice { background: var(--card); border-left: 4px solid var(--orange); padding: 12px 16px; border-radius: 6px; }
a { color: var(--blue); text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; }
footer { border-top: 1px solid color-mix(in srgb, var(--ink) 20%, transparent); font-size: 0.95rem; }