body{max-width:760px;margin:2rem auto;padding:0 1.2rem;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#222}
h1,h2,h3{color:#05334B;line-height:1.25}a{color:#1FBDB6}hr{border:0;border-top:1px solid #eee;margin:2rem 0}

/* language switch (ES/EN) */
.lang-switch{position:fixed;top:12px;right:12px;display:inline-flex;gap:2px;background:#fff;border:1px solid #e3e8ea;border-radius:999px;padding:3px;box-shadow:0 2px 8px rgba(5,51,75,.12);z-index:50;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;font-size:13px;font-weight:600}
.lang-switch button{border:0;background:none;color:#5a6a73;padding:5px 11px;border-radius:999px;cursor:pointer;font:inherit}
.lang-switch button[aria-pressed="true"]{background:#1FBDB6;color:#fff}
/* default (no JS) shows Spanish — the legally authoritative version */
[data-lang="en"]{display:none}
html[lang="en"] [data-lang="es"]{display:none}
html[lang="en"] [data-lang="en"]{display:block}