:root {
  --tinta: #1a1a1a;
  --tinta-suave: #444;
  --fondo: #ffffff;
  --acento: #0b5fff;
  --error: #b3261e;
  --borde: #d0d0d0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--tinta);
  background: var(--fondo);
  line-height: 1.5;
  font-size: 17px;
}
.pagina {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}
h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 1.15rem; margin: 26px 0 10px; }
.lead { font-size: 1.05rem; color: var(--tinta-suave); }
.bloque { margin: 20px 0; }
ul, ol { padding-left: 1.3em; margin: 8px 0; }
li { margin: 6px 0; }
.ayuda { font-size: 0.85rem; color: #666; margin: 4px 0 0; }

.tarjeta-form {
  margin-top: 28px;
  padding: 20px;
  background: #f7f9fc;
  border: 1px solid #e2e8f4;
  border-radius: 12px;
}

label { display: block; font-weight: 600; margin: 18px 0 6px; }
label:first-of-type { margin-top: 8px; }

input[type="text"],
input[type="email"] {
  display: block;
  width: 100%;
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--borde);
  border-radius: 8px;
  min-height: 44px;
  background: #fff;
}
input[type="text"]:focus,
input[type="email"]:focus {
  outline: 2px solid var(--acento);
  outline-offset: 1px;
}

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-weight: 400;
  margin: 16px 0;
}
.checkbox input {
  width: 24px;
  height: 24px;
  min-width: 24px;
  margin-top: 2px;
}
.checkbox-destacada {
  background: #eef4ff;
  border: 1px solid #cfe0ff;
  border-radius: 8px;
  padding: 12px 14px;
}

.boton-principal {
  display: block;
  width: 100%;
  min-height: 48px;
  margin-top: 24px;
  padding: 14px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  background: var(--acento);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.boton-principal:active { opacity: 0.85; }

.nota { font-size: 0.85rem; color: #666; text-align: center; margin-top: 10px; }

.error-caja {
  background: #fdecea;
  border: 1px solid #f3b4ae;
  color: var(--error);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 0 0 16px;
}
.error-caja p { margin: 4px 0; }

.pie {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px;
  font-size: 0.8rem;
  color: #888;
  text-align: center;
}
.pie a { color: #888; }
a { color: var(--acento); }