.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 48px; padding: 0.75rem 1.6rem; border-radius: 100px;
  font-family: var(--font); font-size: 1rem; font-weight: 600; line-height: 1.2;
  text-decoration: none; text-align: center;
  border: 1.5px solid var(--ink); cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.btn-dark { background: var(--ink); color: var(--white); }
.btn-dark:hover { background: var(--ink-soft); box-shadow: 0 8px 24px rgba(10, 10, 10, 0.18); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--white); }
.btn-claro { background: var(--white); color: var(--ink); border-color: var(--white); }
.btn-claro:hover { background: transparent; color: var(--white); }
.btn:disabled { opacity: 0.6; cursor: progress; }

.enlace-flecha {
  display: inline-flex; align-items: center; gap: 0.4rem; min-height: 44px;
  font-weight: 600; color: var(--ink); text-decoration: underline;
  text-decoration-thickness: 1.5px; text-underline-offset: 5px;
}
.enlace-flecha::after { content: "→"; text-decoration: none; display: inline-block; transition: transform 0.2s; }
.enlace-flecha:hover::after { transform: translateX(3px); }

.etiqueta {
  display: inline-block; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--gray-500); margin-bottom: 1.2rem;
}

.container { max-width: var(--ancho); margin: 0 auto; }
.section { padding: 5.5rem 2rem; }
.section--blanca { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { font-size: clamp(1.75rem, 3.2vw, 2.4rem); font-weight: 700; letter-spacing: -0.025em; line-height: 1.15; max-width: 26ch; margin-bottom: 1rem; }
.section-subtitle { font-size: 1.1rem; color: var(--gray-600); max-width: 64ch; margin-bottom: 2.5rem; }

.cabecera { padding: 5rem 2rem 4.5rem; }
.cabecera--portada { padding: 6.5rem 2rem 5.5rem; }
.cabecera h1 {
  font-size: clamp(2.25rem, 5.2vw, 4rem); font-weight: 700; line-height: 1.06; letter-spacing: -0.035em;
  max-width: 20ch; margin-bottom: 1.5rem;
}
.cabecera-texto { font-size: clamp(1.1rem, 1.6vw, 1.25rem); color: var(--gray-600); max-width: 62ch; margin-bottom: 2.2rem; }
.acciones { display: flex; flex-wrap: wrap; gap: 0.9rem 1.4rem; align-items: center; }
.lema { margin-top: 2rem; font-weight: 600; color: var(--gray-500); letter-spacing: -0.01em; }

.cabecera--estado { min-height: 55vh; }
.enlaces-estado { list-style: none; display: flex; flex-wrap: wrap; gap: 0.6rem 1.6rem; }
.enlaces-estado a { display: inline-flex; min-height: 44px; align-items: center; font-weight: 600; color: var(--ink); text-underline-offset: 4px; }

.rejilla { display: grid; gap: 1.25rem; list-style: none; }
.rejilla--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rejilla--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tarjeta {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem 1.8rem; display: flex; flex-direction: column;
}
.section:not(.section--blanca) .tarjeta { background: var(--white); }
.tarjeta h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.3; margin-bottom: 0.7rem; }
.tarjeta p { color: var(--gray-600); }
.tarjeta-etiqueta { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-500) !important; margin-bottom: 0.6rem; }
.tarjeta--linea { padding: 2.4rem 2.2rem; border-color: var(--border-strong); }
.tarjeta--linea h3 { font-size: clamp(1.35rem, 2vw, 1.6rem); }
.tarjeta--linea .enlace-flecha { margin-top: auto; padding-top: 1.2rem; }

.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 0.7rem; }
.chips li { border: 1px solid var(--border-strong); border-radius: 100px; padding: 0.55rem 1.1rem; font-weight: 500; background: var(--paper); }

.lista-marcas { list-style: none; display: flex; flex-direction: column; gap: 0.9rem; max-width: 72ch; }
.lista-marcas li { position: relative; padding-left: 1.8rem; color: var(--gray-600); font-size: 1.1rem; }
.lista-marcas li::before { content: "→"; position: absolute; left: 0; color: var(--ink); font-weight: 700; }

.pasos { list-style: none; display: grid; gap: 1.25rem; counter-reset: paso; }
.pasos--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pasos--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.paso {
  counter-increment: paso; background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.8rem 1.6rem;
}
.section--blanca .paso { background: var(--paper); }
.paso::before {
  content: counter(paso, decimal-leading-zero); display: block;
  font-size: 0.9rem; font-weight: 700; color: var(--gray-500); letter-spacing: 0.04em; margin-bottom: 0.9rem;
}
.paso h3 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 0.5rem; }
.paso p { color: var(--gray-600); font-size: 1rem; }
.paso-resultado { margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px solid var(--border); }
.paso-resultado strong { color: var(--ink); }

.cierre { background: var(--ink); color: var(--white); }
.cierre-titulo { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; letter-spacing: -0.025em; line-height: 1.2; max-width: 30ch; margin-bottom: 0.9rem; }
.cierre p { color: #d6d6d6; font-size: 1.15rem; margin-bottom: 1.8rem; max-width: 60ch; }
.cierre .cierre-correo { margin: 1.6rem 0 0; font-size: 1rem; }
.cierre a:not(.btn) { color: var(--white); }

.formulario { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.3rem; min-width: 0; }
.form-group > label, .form-opciones legend { display: block; font-size: 0.95rem; font-weight: 600; color: var(--ink); margin-bottom: 0.45rem; }
.opcional { font-weight: 400; color: var(--gray-500); }
.ayuda { font-size: 0.92rem; color: var(--gray-500); margin: -0.15rem 0 0.5rem; }
.form-group input[type="text"], .form-group input[type="email"], .form-group textarea {
  width: 100%; min-height: 48px; background: var(--paper);
  border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 0.75rem 1rem; color: var(--ink); font-family: var(--font); font-size: 1rem; line-height: 1.5;
  resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--ink); outline: 3px solid rgba(10, 10, 10, 0.18); outline-offset: 0; }
.form-group [aria-invalid="true"] { border-color: var(--error); }
.opcion {
  display: flex; align-items: center; gap: 0.7rem; min-height: 48px;
  padding: 0.6rem 1rem; margin-bottom: 0.5rem;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; font-size: 1rem;
}
.opcion:has(input:checked) { border-color: var(--ink); background: var(--paper); }
.campo-error { color: var(--error); font-size: 0.95rem; font-weight: 500; margin-top: 0.4rem; }
.campo-error::before { content: "⚠ "; }
.form-estado--ok { border-color: var(--ok); color: var(--ok); background: #f1f8f3; }
.form-estado--error { border-color: var(--error); color: var(--error); background: #fdf3f2; }

/* Responsive rules from the production reference accompanying the guide. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .be-pista { scroll-behavior: auto; }
}

/* ===== ADAPTACIÓN ===== */
@media (max-width: 1080px) {
  .pasos--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .rejilla--3, .pasos--3 { grid-template-columns: minmax(0, 1fr); }
  .contacto-rejilla { grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }
  .section { padding: 4rem 1.25rem; }
  .cabecera, .cabecera--portada { padding: 3.5rem 1.25rem 3.5rem; }
  .legal { padding: 3rem 1.25rem 4rem; }
}
@media (max-width: 720px) {
  .rejilla--2, .pasos--4 { grid-template-columns: minmax(0, 1fr); }
  .form-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .formulario { padding: 1.5rem 1.2rem; }
  .tarjeta, .tarjeta--linea { padding: 1.6rem 1.3rem; }
  .acciones .btn { width: 100%; }
}
@media (max-width: 400px) {
  .cookie-banner { bottom: 0.6rem; width: calc(100% - 1.2rem); padding: 1.1rem; }
  .cookie-banner-actions .btn, .cookie-prefs-actions .btn { flex: 1 1 100%; }
  .cookie-prefs-inner { padding: 1.5rem 1.2rem; }
}