:root {
  --fondo: #f4f5f7;
  --caja: #ffffff;
  --texto: #1d2129;
  --tenue: #6b7280;
  --borde: #e3e6ea;
  --acento: #1f5bd7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

nav {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--caja);
  border-bottom: 1px solid var(--borde);
}

nav .marca { font-weight: 700; text-decoration: none; color: var(--texto); }
nav .sep { flex: 1; }
nav a { color: var(--acento); text-decoration: none; }
nav form { margin: 0; }

button.enlace {
  background: none;
  border: 0;
  padding: 0;
  color: var(--tenue);
  cursor: pointer;
  font: inherit;
}

main { max-width: 900px; margin: 24px auto; padding: 0 16px; }

.caja {
  background: var(--caja);
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 20px 22px;
}

.caja.estrecha { max-width: 380px; margin: 60px auto; }

h1 { font-size: 22px; margin: 0 0 16px; }

label { display: block; margin-bottom: 14px; font-weight: 600; font-size: 14px; }

input, textarea, select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 10px;
  font: inherit;
  font-weight: 400;
  color: var(--texto);
  background: #fff;
  border: 1px solid #c8ccd2;
  border-radius: 6px;
}

textarea { resize: vertical; }

.fila { display: flex; gap: 16px; }
.fila label { flex: 1; }

.acciones { display: flex; align-items: center; gap: 14px; }

button[type="submit"], .boton {
  display: inline-block;
  padding: 9px 16px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--acento);
  border: 0;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
}

a.secundario { color: var(--tenue); text-decoration: none; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--borde); vertical-align: top; }
th { font-size: 13px; color: var(--tenue); text-transform: uppercase; letter-spacing: .03em; }
td a { color: var(--acento); text-decoration: none; font-weight: 600; }

.tenue { color: var(--tenue); font-size: 13px; font-weight: 400; }
.vacio { color: var(--tenue); }

.chapa {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  vertical-align: middle;
}

.aviso {
  padding: 10px 12px;
  border-radius: 6px;
  background: #eef2f7;
  color: #33415c;
}

.aviso.error { background: #fbdede; color: #8a1f1f; }

dl { margin: 0 0 20px; }
dt { font-size: 13px; color: var(--tenue); text-transform: uppercase; letter-spacing: .03em; margin-top: 14px; }
dd { margin: 4px 0 0; word-break: break-word; }
dd a { color: var(--acento); }

video {
  width: 100%;
  background: #000;
  border-radius: 8px;
  margin-top: 8px;
}

@media (max-width: 560px) {
  .fila { flex-direction: column; gap: 0; }
}