:root { --fundo: #f6f7f9; --papel: #fff; --texto: #1d232b; --suave: #5b6672; --borda: #dde2e8; --primaria: #1f5fbf; }
@media (prefers-color-scheme: dark) {
  :root { --fundo: #12161b; --papel: #1a2027; --texto: #e6e9ed; --suave: #9aa5b1; --borda: #2c343d; --primaria: #5b9bf0; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--fundo); color: var(--texto); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header, main, footer { max-width: 820px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 28px; }
header a { color: var(--texto); text-decoration: none; font-weight: 700; }
header span { color: var(--suave); font-weight: 400; }
nav { margin-top: 6px; font-size: .95rem; }
nav a { color: var(--primaria); margin-right: 16px; }
main { background: var(--papel); border: 1px solid var(--borda); border-radius: 12px; padding: 20px 24px; margin-top: 18px; }
h1 { font-size: 1.7rem; margin: .2rem 0 1rem; line-height: 1.25; }
h2 { font-size: 1.15rem; margin: 1.8rem 0 .5rem; }
a { color: var(--primaria); }
li { margin: .25rem 0; }
.aviso { border-left: 4px solid var(--primaria); padding: 8px 12px; background: var(--fundo); border-radius: 6px; }
.data { color: var(--suave); font-size: .9rem; }
code { font-size: .9em; word-break: break-all; }
main { overflow-wrap: anywhere; }
footer { color: var(--suave); font-size: .85rem; padding: 18px 16px 40px; }
@media (max-width: 600px) { main { padding: 16px; } h1 { font-size: 1.4rem; } }