:root {
  --bg: #f5f0e8; --card: #ffffff; --borde: #e8e2d6; --navy: #16357a; --rojo: #e23b30;
  --texto: #12233f; --texto2: #5f7089;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1726; --card: #172238; --borde: #26324a; --navy: #8fb0ff; --texto: #e8edf6; --texto2: #a7b3c7; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--texto); font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.6; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 56px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 56px; height: 56px; object-fit: contain; }
header a { color: var(--navy); font-weight: 700; font-size: 20px; text-decoration: none; }
.tarjeta { background: var(--card); border: 1px solid var(--borde); border-radius: 8px; padding: 24px; box-shadow: 0 6px 18px rgba(18,35,63,.08); }
h1 { color: var(--navy); font-size: 28px; line-height: 1.2; margin: 0 0 8px; }
h2 { color: var(--navy); font-size: 19px; margin: 28px 0 8px; }
p, li { color: var(--texto); }
.chico { color: var(--texto2); font-size: 14px; }
a { color: var(--navy); }
footer { margin-top: 32px; color: var(--texto2); font-size: 14px; display: flex; gap: 16px; flex-wrap: wrap; }
.portada { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 32px 16px; }
.portada-logo { width: 180px; max-width: 60vw; height: auto; margin-bottom: 16px; }
.portada h1 { font-size: 32px; margin: 0; }
.portada-pronto { color: var(--texto2); font-size: 20px; letter-spacing: .08em; text-transform: uppercase; margin: 8px 0 32px; }
.portada-botones { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.boton { display: inline-block; padding: 12px 20px; border-radius: 6px; background: var(--card); border: 1px solid var(--borde); color: var(--navy); font-weight: 600; text-decoration: none; box-shadow: 0 4px 12px rgba(18,35,63,.08); }
.boton:hover { border-color: var(--navy); }