/* OPS-1 Platzhalter; Systemschrift statt Webfont, damit nichts Externes geladen wird. */
:root{color-scheme:light dark;--fg:#1d1d1f;--bg:#fbfbfd;--muted:#6e6e73;--link:#0066cc}
@media (prefers-color-scheme:dark){:root{--fg:#f5f5f7;--bg:#111113;--muted:#a1a1a6;--link:#4da3ff}}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--fg);font:17px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif}
main{padding:24px 16px;text-align:center;max-width:36rem}
h1{font-size:40px;letter-spacing:-.02em;margin:0 0 8px}
p{margin:0 0 16px}
nav{color:var(--muted);font-size:14px;margin-top:32px}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}