:root {
      /* Colores de marca */
      --primary: #1D2955;
      --secondary: #D8CAA7;
      --whatsapp-green: #25D366;
      --header-bg: var(--primary);
      --text-light: #fff;
      --text-dark: #222;
      --card-bg: var(--secondary);
      --shadow: rgba(0,0,0,0.1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    body, html {
      margin: 0;
      padding: 0;
      font-family: 'Inter', sans-serif;
      background-color: var(--header-bg);
      color: var(--text-light);
      line-height: 1.5;
    }
    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 2rem;
    }
    .logo {
      display: flex;
      align-items: center;
    }
    .logo-img { height: 40px; margin-right: 0.75rem; }
    .logo-text { font-size: 1.25rem; font-weight: 700; color: var(--text-light); }
    .header-whatsapp {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background-color: var(--whatsapp-green);
      color: #fff;
      padding: 0.5rem 1rem;
      border-radius: 4px;
      text-decoration: none;
      font-weight: 600;
      font-size: 0.9rem;
    }
    .header-whatsapp .whatsapp-icon { height: 1.25rem; }
    main.container {
      max-width: 800px;
      margin: 2rem auto;
      padding: 0 1rem;
    }
    .hero { text-align: center; padding: 4rem 0; }
    .hero h1 { font-size: 2.25rem; margin-bottom: 1rem; color: var(--text-light); }
    .hero p { font-size: 1.125rem; margin-bottom: 2rem; color: var(--text-light); }
    .btn-whatsapp {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background-color: var(--whatsapp-green);
      color: #fff;
      padding: 0.75rem 1.5rem;
      font-size: 1rem;
      font-weight: 600;
      border: none;
      border-radius: 4px;
      text-decoration: none;
    }
    .btn-whatsapp .whatsapp-icon { height: 1.25rem; }
    .two-columns {
      display: flex;
      flex-direction: column;
      gap: 2rem;
      margin-top: 3rem;
    }
    .column {
      flex: 1 1;
      background-color: var(--card-bg);
      color: var(--text-dark);
      padding: 1.5rem;
      border-radius: 4px;
      box-shadow: 0 1px 4px var(--shadow);
    }

    #oferta {
        box-sizing: border-box;
        height: auto;
    }
    .column h2 { margin-top: 0; font-size: 1.5rem; color: var(--primary); }
    .column ul { list-style: none; padding: 0; }
    .column ul li {
      margin-bottom: 0.75rem;
      padding-left: 1.5rem;
      position: relative;
    }
    .column ul li:before {
      content: '✔';
      position: absolute;
      left: 0;
      color: var(--primary);
    }

    footer {
      margin: 4rem 0 2rem;
      display: flex;
      justify-content: space-between;
      padding: 0 32px;
      font-size: 0.875rem;
      color: var(--text-light);
    }

@media (max-width: 425px) {
    header {
        padding: 1rem 1.5rem;
        gap: 1rem;
    }

    .header-whatsapp {
        max-width: 170px;
    }
}

@media (max-width: 325px) {
    header {
        padding: 1rem 1rem;
    }

    .header-whatsapp {
        max-width: 170px;
        padding: 0.3rem 0.5rem;
    }

    .logo-text {
        font-size: 1rem;
    }
}