:root{color-scheme:dark;--bg:#080e28;--surface:#111c3b;--text:#f6f8ff;--muted:#b9c8e5;--link:#a8c7ff;--border:#2d3e65}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
main{width:min(100% - 40px,760px);margin:40px auto 64px}
a{color:var(--link);text-underline-offset:4px;overflow-wrap:anywhere}
a:hover{text-decoration-thickness:2px}
a:focus-visible{outline:3px solid var(--link);outline-offset:5px;border-radius:3px}
.back{display:inline-block;min-height:44px;padding:8px 0}
.eyebrow{margin:40px 0 4px;letter-spacing:.15em;font-size:13px;font-weight:800;color:var(--muted)}
h1{margin:0;font-size:clamp(36px,7vw,52px);line-height:1.15;letter-spacing:-.04em}
.intro{margin:16px 0 32px;color:var(--muted)}
section{padding:24px;margin:16px 0;border:1px solid var(--border);border-radius:18px;background:var(--surface)}
h2{font-size:21px;line-height:1.3;margin:0 0 14px;letter-spacing:-.02em}
p{margin:12px 0}section p:last-child{margin-bottom:0}
footer{padding-top:20px;font-size:13px;color:var(--muted)}
@media(prefers-color-scheme:light){:root{color-scheme:light;--bg:#f3f6fd;--surface:#fff;--text:#172444;--muted:#536480;--link:#244f9c;--border:#c8d4e7}}
@media(max-width:480px){main{margin-top:20px}section{padding:20px}}

.language-switch{display:inline-flex;align-items:center;gap:5px;margin:10px 0}.language-switch a{font:600 13px system-ui;padding:8px 10px;border:1px solid #74819c66;border-radius:7px;text-decoration:none}.language-switch a[aria-current=true]{text-decoration:underline;text-underline-offset:4px}