:root{--bg:#ffffff;--fg:#0f172a;--muted:#64748b;--link:#0ea5e9;--max:72rem}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6}
.container{max-width:var(--max);padding:clamp(12px,2vw,24px);margin:auto}
h1,h2{line-height:1.2;margin:0 0 .5rem}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.breadcrumbs{list-style:none;padding:0;margin:0;display:flex;gap:.5rem;font-size:.875rem;color:var(--muted)}
.breadcrumbs li+li:before{content:"›";margin:0 .25rem;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}