/* =========================================================
   VARIABLES GLOBALES
   ========================================================= */
   :root {
    --color-bg: #f7f4ef;
    --color-bg-alt: #eeeae2;
    --color-dark: #1c1a17;
    --color-text: #2b2823;
    --color-text-muted: #5c5850;
    --color-accent: #7a4b2a;
    --color-accent-dark: #5a3419;
    --color-border: #ddd6c9;
    --font-heading: Georgia, 'Times New Roman', serif;
    --font-body: 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1140px;
    --radius: 6px;
    --transition: 0.3s ease;
  }
  
  /* =========================================================
     RESET BÁSICO
     ========================================================= */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  ul {
    list-style: none;
  }
  
  .container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
  }
  
  /* =========================================================
     TIPOGRAFÍA GENERAL
     ========================================================= */
  h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-dark);
    font-weight: 400;
  }
  
  .section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 16px;
  }
  
  .section-lead {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 620px;
    margin: 0 auto 48px;
  }
  
  /* =========================================================
     BOTONES
     ========================================================= */
  .btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: background-color var(--transition), transform var(--transition);
    cursor: pointer;
    border: none;
  }
  
  .btn-primary {
    background-color: var(--color-accent);
    color: #fff;
  }
  
  .btn-primary:hover,
  .btn-primary:focus {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
  }
  
  .btn-large {
    padding: 16px 40px;
    font-size: 1rem;
  }
  
  .btn:focus-visible {
    outline: 3px solid var(--color-accent-dark);
    outline-offset: 3px;
  }
  
  /* =========================================================
     HEADER / NAV
     ========================================================= */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(247, 244, 239, 0.95);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--color-border);
  }
  
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
  }
  
  .logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 0.08em;
    color: var(--color-dark);
  }
  
  .main-nav ul {
    display: flex;
    gap: 32px;
    align-items: center;
  }
  
  .nav-link {
    font-size: 0.9rem;
    color: var(--color-text);
    transition: color var(--transition);
  }
  
  .nav-link:hover {
    color: var(--color-accent);
  }
  
  .nav-cta {
    background-color: var(--color-accent);
    color: #fff !important;
    padding: 8px 18px;
    border-radius: var(--radius);
  }
  
  .nav-cta:hover {
    background-color: var(--color-accent-dark);
  }
  
  .menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  
  .menu-toggle span {
    width: 26px;
    height: 2px;
    background-color: var(--color-dark);
    transition: transform var(--transition), opacity var(--transition);
  }
  
  .menu-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  
  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  
  /* =========================================================
     HERO
     ========================================================= */
  .hero {
    padding: 90px 0 100px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  }
  
  .hero-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
  }
  
  .hero-text {
    flex: 1 1 420px;
  }
  
  .hero-kicker {
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
    margin-bottom: 12px;
  }
  
  .hero-title {
    font-size: 4.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 24px;
  }
  
  .hero-question {
    font-size: 1.4rem;
    font-family: var(--font-heading);
    color: var(--color-dark);
    margin-bottom: 20px;
    line-height: 1.4;
  }
  
  .hero-subtext {
    color: var(--color-text-muted);
    margin-bottom: 32px;
    max-width: 480px;
  }
  
  .hero-image {
    flex: 1 1 320px;
    display: flex;
    justify-content: center;
  }
  
  .hero-image img {
    max-width: 340px;
    border-radius: var(--radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  }
  
  /* =========================================================
     SECCIÓN CONTENIDO / CARDS
     ========================================================= */
  .content-section {
    padding: 100px 0;
  }
  
  .cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
  
  .card {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: transform var(--transition), box-shadow var(--transition);
  }
  
  .card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.08);
  }
  
  .card-icon {
    font-size: 2rem;
    margin-bottom: 16px;
  }
  
  .card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
  }
  
  .card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
  }
  
  /* =========================================================
     SECCIÓN PERSPECTIVA
     ========================================================= */
  .perspective-section {
    background-color: var(--color-dark);
    color: #f2eee6;
    padding: 100px 0;
  }
  
  .perspective-section .section-title {
    color: #f2eee6;
  }
  
  .perspective-inner {
    max-width: 720px;
    text-align: center;
  }
  
  .perspective-text {
    font-size: 1.1rem;
    margin-bottom: 24px;
    color: #d8d2c6;
  }
  
  /* =========================================================
     SECCIÓN PREGUNTAS
     ========================================================= */
  .questions-section {
    padding: 100px 0;
    background-color: var(--color-bg);
  }
  
  .questions-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .questions-list li {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-dark);
    padding: 20px 24px;
    border-left: 3px solid var(--color-accent);
    background-color: #fff;
    border-radius: 0 var(--radius) var(--radius) 0;
  }
  
  /* =========================================================
     SECCIÓN AUDIENCIA
     ========================================================= */
  .audience-section {
    padding: 90px 0;
    background-color: var(--color-bg-alt);
  }
  
  .audience-inner {
    max-width: 680px;
    text-align: center;
  }
  
  .audience-text {
    color: var(--color-text-muted);
    font-size: 1.05rem;
  }
  
  /* =========================================================
     SECCIÓN OFERTA / COMPRAR
     ========================================================= */
  .offer-section {
    padding: 100px 0;
  }
  
  .offer-card {
    display: flex;
    gap: 48px;
    align-items: center;
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 48px;
    max-width: 780px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .offer-image {
    max-width: 200px;
    border-radius: var(--radius);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
  }
  
  .offer-details {
    flex: 1 1 320px;
  }
  
  .offer-details h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
  }
  
  .offer-features {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  .offer-features li {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    padding-left: 20px;
    position: relative;
  }
  
  .offer-features li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--color-accent);
  }
  
  .offer-price {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-accent-dark);
    margin-bottom: 24px;
  }
  
  /* =========================================================
     CTA FINAL
     ========================================================= */
  .final-cta {
    background-color: var(--color-dark);
    color: #f2eee6;
    padding: 110px 0;
    text-align: center;
  }
  
  .final-cta-inner {
    max-width: 700px;
  }
  
  .final-cta h2 {
    color: #f2eee6;
    font-size: 1.8rem;
    margin-bottom: 20px;
    line-height: 1.4;
  }
  
  .final-cta p {
    color: #d8d2c6;
    margin-bottom: 32px;
    font-size: 1.05rem;
  }
  
  /* =========================================================
     FOOTER
     ========================================================= */
  .site-footer {
    background-color: var(--color-bg-alt);
    padding: 28px 0;
    text-align: center;
  }
  
  .footer-inner p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
  }
  
  /* =========================================================
     ANIMACIONES DE ENTRADA (fade-in con Intersection Observer)
     ========================================================= */
  .fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  
  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  /* =========================================================
     RESPONSIVE — TABLET
     ========================================================= */
  @media (max-width: 900px) {
    .cards-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  
    .hero-title {
      font-size: 3.4rem;
    }
  }
  
  /* =========================================================
     RESPONSIVE — MÓVIL
     ========================================================= */
  @media (max-width: 640px) {
    .main-nav {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background-color: var(--color-bg);
      border-bottom: 1px solid var(--color-border);
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--transition);
    }
  
    .main-nav.open {
      max-height: 320px;
    }
  
    .main-nav ul {
      flex-direction: column;
      align-items: flex-start;
      padding: 20px 24px;
      gap: 20px;
    }
  
    .menu-toggle {
      display: flex;
    }
  
    .hero {
      padding: 60px 0 70px;
      text-align: center;
    }
  
    .hero-inner {
      flex-direction: column-reverse;
      gap: 36px;
    }
  
    .hero-title {
      font-size: 2.6rem;
    }
  
    .hero-question {
      font-size: 1.15rem;
    }
  
    .hero-subtext {
      margin-left: auto;
      margin-right: auto;
    }
  
    .cards-grid {
      grid-template-columns: 1fr;
    }
  
    .content-section,
    .perspective-section,
    .questions-section,
    .audience-section,
    .offer-section,
    .final-cta {
      padding: 64px 0;
    }
  
    .section-title {
      font-size: 1.6rem;
    }
  
    .offer-card {
      padding: 32px 24px;
      text-align: center;
      justify-content: center;
    }
  
    .final-cta h2 {
      font-size: 1.4rem;
    }
  
    .btn-large {
      width: 100%;
      text-align: center;
    }
  }