/* ==========================================================================
   NEXO DESIGN SYSTEM & STYLESHEET
   Platform: Landing Page Comercial B2B
   Colors:
     - Azul profundo: #173451
     - Verde azulado: #3D827A
     - Gris con matiz frío: #E9EFF2
     - Blanco superficie: #FFFFFF
   Typography: Montserrat / Sans-serif contemporánea
   ========================================================================== */

/* --- Custom Properties / Design Tokens --- */
:root {
  --color-primary: #173451;
  --color-primary-hover: #0f243a;
  --color-primary-light: #244b72;
  --color-primary-subtle: #edf3f8;
  
  --color-accent: #3D827A;
  --color-accent-hover: #316c65;
  --color-accent-light: #eaf4f3;
  --color-accent-border: #a3d2cc;
  --color-accent-text: #23544f;

  --color-bg-base: #F8FAFC;
  --color-bg-tint: #EDF1F4;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F1F6F9;
  
  --color-text-main: #14283D;
  --color-text-muted: #4F677E;
  --color-text-light: #7B91A5;
  --color-text-inverse: #FFFFFF;
  
  --color-border: #D5E1E8;
  --color-border-subtle: #E5EDF2;
  --color-border-focus: #3D827A;

  --color-status-success: #0E8358;
  --color-status-success-bg: #E6F7F0;
  --color-status-warning: #C05621;
  --color-status-warning-bg: #FEEBC8;
  --color-status-info: #2B6CB0;
  --color-status-info-bg: #EBF8FF;
  --color-status-danger: #C53030;
  --color-status-danger-bg: #FFF5F5;

  --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(23, 52, 81, 0.05);
  --shadow-sm: 0 2px 4px rgba(23, 52, 81, 0.06), 0 1px 2px rgba(23, 52, 81, 0.04);
  --shadow-md: 0 6px 16px rgba(23, 52, 81, 0.08), 0 2px 6px rgba(23, 52, 81, 0.04);
  --shadow-lg: 0 12px 28px rgba(23, 52, 81, 0.12), 0 4px 10px rgba(23, 52, 81, 0.06);
  --shadow-xl: 0 20px 40px rgba(23, 52, 81, 0.16), 0 8px 16px rgba(23, 52, 81, 0.08);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 240ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --container-narrow: 860px;
  --header-height: 76px;
}

/* --- Base Reset & Box Sizing --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-main);
  background-color: var(--color-bg-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* Skip link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 16px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
  outline: 3px solid var(--color-accent);
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children */
.stagger-children .reveal:nth-child(1) { transition-delay: 0ms; }
.stagger-children .reveal:nth-child(2) { transition-delay: 100ms; }
.stagger-children .reveal:nth-child(3) { transition-delay: 200ms; }
.stagger-children .reveal:nth-child(4) { transition-delay: 300ms; }
.stagger-children .reveal:nth-child(5) { transition-delay: 400ms; }
.stagger-children .reveal:nth-child(6) { transition-delay: 500ms; }

/* --- Layout & Typography Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.desktop-only {
  display: inline;
}

.section {
  padding-top: 100px;
  padding-bottom: 100px;
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.section-tinted {
  background-color: var(--color-bg-tint);
}

.section-white {
  background-color: var(--color-surface);
}

.section-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent-light);
  color: var(--color-accent-text);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
  border: 1px solid var(--color-accent-border);
}

.section-tag-light {
  background-color: rgba(255, 255, 255, 0.12);
  color: #E9EFF2;
  border-color: rgba(255, 255, 255, 0.2);
}

.section-title {
  font-size: 2.25rem;
  line-height: 1.2;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.section-primary .section-title {
  color: var(--color-text-inverse);
}

.section-desc {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.section-primary .section-desc {
  color: #CFDFEC;
}

/* --- Buttons & CTAs --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.25;
  white-space: nowrap;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #3D827A 0%, #2D6E67 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(61, 130, 122, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #357872 0%, #255D57 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(61, 130, 122, 0.38);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(61, 130, 122, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  transform: translateY(-2px);
}

.btn-white {
  background-color: #FFFFFF;
  color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
}

.btn-white:hover {
  background-color: #F1F6F9;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.16);
}

.btn-block {
  width: 100%;
}

.btn-icon-right svg {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon-right svg {
  transform: translateX(3px);
}

/* Focus styles for keyboard accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: 0 1px 12px rgba(23, 52, 81, 0.08);
  background-color: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--color-border-subtle);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.brand-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 30px;
  width: auto;
  object-fit: contain;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: nowrap;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), #5BA8A0);
  border-radius: 1px;
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-cta-group .btn {
  padding: 9px 18px;
  font-size: 0.8125rem;
  white-space: nowrap;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background-color: currentColor;
  margin: 2px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(23, 52, 81, 0.4);
  backdrop-filter: blur(4px);
  z-index: 890;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-content {
  background-color: var(--color-surface);
  padding: 24px 20px 32px 20px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transform: translateY(-20px);
  transition: transform var(--transition-normal);
}

.mobile-drawer.open .mobile-drawer-content {
  transform: translateY(0);
}

.mobile-nav-link {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* --- HERO SECTION --- */
.hero-section {
  padding-top: 64px;
  padding-bottom: 80px;
  background: linear-gradient(170deg, #FFFFFF 0%, #F3F7FA 40%, #E6EEF3 100%);
  position: relative;
  overflow: hidden;
}

/* Subtle geometric accent */
.hero-section::before {
  content: '';
  position: absolute;
  top: -180px;
  right: -180px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(61, 130, 122, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -120px;
  left: -120px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(23, 52, 81, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 22px;
  border: 1px solid #D1E1EE;
}

.hero-tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
  font-size: 3rem;
  line-height: 1.12;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}

.hero-desc {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto 32px auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.hero-microcopy {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

/* --- Hero Features Strip (Compacto y centrado) --- */
.hero-features-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  max-width: 920px;
  margin: 36px auto 0 auto;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-feature-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  text-align: left;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.hero-feature-box:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
}

.hfb-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent-light), #d4ebe8);
  color: var(--color-accent-text);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hfb-icon svg {
  width: 18px;
  height: 18px;
}

.hero-feature-box h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
  line-height: 1.3;
}

.hero-feature-box p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin: 0;
}

/* --- Section: Por qué Nexo (Friction breakdown) --- */
.friction-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.friction-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.friction-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #EF4444, #F87171);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.friction-card:hover {
  transform: translateY(-4px);
  border-color: #F3CACA;
  box-shadow: var(--shadow-md);
}

.friction-card:hover::before {
  opacity: 1;
}

.friction-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.6875rem;
  font-weight: 700;
  color: #B91C1C;
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  align-self: flex-start;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.friction-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.friction-card > p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.friction-outcome {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background-color: #FEF2F2;
  border-left: 3px solid #EF4444;
  font-size: 0.8125rem;
  color: #991B1B;
  line-height: 1.45;
  font-weight: 500;
}

/* --- Section: Beneficios (3 Pillars) --- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}

.pillar-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), #5BA8A0);
}

.pillar-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-lg);
}

.pillar-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.pillar-title {
  font-size: 1.3125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
  line-height: 1.25;
}

.pillar-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.pillar-benefits-list {
  list-style: none;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pillar-benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.84375rem;
  color: var(--color-text-main);
  line-height: 1.4;
}

.pillar-benefits-list li svg {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.cta-banner-inline {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1D4468 100%);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.cta-banner-inline::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(61, 130, 122, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner-copy h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.cta-banner-copy p {
  color: #CBDCE9;
  font-size: 0.9375rem;
  max-width: 600px;
}

/* --- Section: Cómo funciona (Steps) --- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

/* Connector line between steps */
.steps-grid::before {
  content: '';
  position: absolute;
  top: 54px;
  left: calc(16.67% + 22px);
  right: calc(16.67% + 22px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-border), var(--color-accent), var(--color-accent-border));
  z-index: 0;
}

.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.step-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1D4468 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(23, 52, 81, 0.2);
}

.step-chip {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-xs);
  background-color: var(--color-accent-light);
  color: var(--color-accent-text);
  border: 1px solid var(--color-accent-border);
}

.step-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.step-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* --- Section: Funcionalidades --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-border);
}

.feature-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary-subtle), #dde8f0);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: background var(--transition-normal);
}

.feature-card:hover .feature-icon-wrap {
  background: linear-gradient(135deg, var(--color-accent-light), #c8e5e1);
  color: var(--color-accent-text);
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 18px;
  flex-grow: 1;
}

.feature-detail-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent-text);
  background-color: var(--color-accent-light);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  align-self: flex-start;
  border: 1px solid var(--color-accent-border);
}

/* --- Section: Optimización & Estimator --- */
.roi-container-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}

.roi-explanation-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-xs);
}

.roi-explanation-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.roi-vars-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}

.roi-var-item {
  display: flex;
  gap: 14px;
}

.roi-var-bullet {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-light), #d4ebe8);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1px solid var(--color-accent-border);
}

.roi-var-item h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 3px;
}

.roi-var-item p {
  font-size: 0.84375rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Interactive Estimator Tool */
.estimator-tool-card {
  background-color: var(--color-surface);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.estimator-badge {
  position: absolute;
  top: -12px;
  right: 28px;
  background: linear-gradient(135deg, var(--color-accent), #2D6E67);
  color: #FFFFFF;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.estimator-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.estimator-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.5;
}

.slider-group {
  margin-bottom: 22px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.slider-val-tag {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
}

.range-slider {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #2D6E67);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(61, 130, 122, 0.35);
  transition: transform var(--transition-fast);
  border: 2px solid #FFFFFF;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #2D6E67);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(61, 130, 122, 0.35);
  border: 2px solid #FFFFFF;
}

.estimator-result-box {
  background: linear-gradient(135deg, var(--color-primary-subtle), #E1ECF4);
  border: 1px solid #C4D7E5;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 24px;
  text-align: center;
}

.est-kpi-highlight {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 4px;
}

.est-kpi-caption {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.estimator-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-light);
  line-height: 1.45;
  margin-top: 16px;
  text-align: center;
}

/* Comparison Table (Before vs With Nexo) */
.comparison-table-wrap {
  margin-top: 56px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th, .comparison-table td {
  padding: 18px 22px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: 0.9rem;
}

.comparison-table th {
  background-color: #F5F8FA;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr {
  transition: background-color var(--transition-fast);
}

.comparison-table tbody tr:hover {
  background-color: #FAFCFD;
}

.col-aspect {
  width: 26%;
  font-weight: 600;
  color: var(--color-primary);
}

.col-before {
  width: 37%;
  color: #718096;
}

.col-after {
  width: 37%;
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(61, 130, 122, 0.04);
}

/* --- Case Study / Proof Component --- */
.case-study-box {
  margin-top: 56px;
  background: linear-gradient(145deg, #F5F9FC 0%, #FFFFFF 100%);
  border: 1.5px solid #D2E0E8;
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.case-study-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-text);
  background-color: var(--color-accent-light);
  border: 1px solid rgba(61, 130, 122, 0.25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.case-study-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.case-study-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 820px;
  margin-bottom: 28px;
}

.case-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.case-metric-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.case-metric-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.case-metric-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 4px;
}

.case-metric-card:first-child .case-metric-val {
  color: var(--color-accent);
}

.case-metric-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.case-metric-desc {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.case-study-footer-note {
  padding-top: 18px;
  border-top: 1px solid #E1ECF4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.case-study-footer-note strong {
  color: var(--color-primary);
}

@media (max-width: 1024px) {
  .case-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-study-box {
    padding: 28px 24px;
  }
}

@media (max-width: 640px) {
  .case-metrics-grid {
    grid-template-columns: 1fr;
  }
  .case-study-title {
    font-size: 1.25rem;
  }
}

/* --- Section: FAQ Accordion --- */
.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.faq-item.active {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(61, 130, 122, 0.1);
}

.faq-question-btn {
  width: 100%;
  padding: 22px 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.faq-question-btn:hover {
  background-color: #F8FAFC;
}

.faq-icon-arrow {
  flex-shrink: 0;
  margin-left: 16px;
  color: var(--color-text-light);
  transition: transform var(--transition-normal), color var(--transition-normal);
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--color-accent);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms cubic-bezier(0.4, 0, 0.2, 1);
  background-color: #FFFFFF;
}

.faq-answer-content {
  padding: 0 26px 22px 26px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* --- Conversion Section & Lead Form --- */
.conversion-section {
  background: linear-gradient(170deg, var(--color-primary) 0%, #0D1F30 100%);
  color: #FFFFFF;
  padding-top: 100px;
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
}

.conversion-section::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(61, 130, 122, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.conversion-layout {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: start;
}

.conversion-copy-block h2 {
  font-size: 2.25rem;
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.conversion-copy-block p {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: #CFDFEC;
  margin-bottom: 32px;
}

.conversion-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.conversion-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: #E2EDF5;
  line-height: 1.45;
}

.conversion-bullets li svg {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.contact-direct-card {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
  font-size: 0.875rem;
  backdrop-filter: blur(4px);
}

.contact-direct-card h4 {
  font-weight: 700;
  margin-bottom: 6px;
  color: #FFFFFF;
}

.contact-direct-card p {
  color: #AEC6DC;
  font-size: 0.8125rem;
  margin-bottom: 0;
}

/* Lead Form Card */
.lead-form-card {
  background-color: #FFFFFF;
  color: var(--color-text-main);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.3);
  position: relative;
}

.form-header {
  margin-bottom: 28px;
}

.form-header h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.form-header p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.form-label .required-mark {
  color: var(--color-status-danger);
  margin-left: 2px;
}

.form-label .optional-mark {
  font-weight: 400;
  color: var(--color-text-light);
  font-size: 0.75rem;
  margin-left: 4px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background-color: #FFFFFF;
  color: var(--color-text-main);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(61, 130, 122, 0.14);
}

.form-input.is-invalid, .form-select.is-invalid {
  border-color: var(--color-status-danger);
  background-color: #FFFDFD;
}

.form-error-msg {
  font-size: 0.75rem;
  color: var(--color-status-danger);
  display: none;
  font-weight: 500;
}

.form-input.is-invalid + .form-error-msg,
.form-select.is-invalid + .form-error-msg {
  display: block;
}

.contact-channel-selector {
  display: flex;
  gap: 12px;
}

.channel-radio-label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.channel-radio-label:has(input:checked) {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
  color: var(--color-accent-text);
}

.channel-radio-label input {
  margin: 0;
}

.privacy-notice {
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--color-text-light);
  margin-top: 4px;
}

.privacy-link {
  color: var(--color-primary);
  text-decoration: underline;
  cursor: pointer;
}

/* Form Submission Feedback States */
.form-status-alert {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  display: none;
  margin-top: 12px;
}

.form-status-alert.alert-success {
  display: block;
  background-color: var(--color-status-success-bg);
  border: 1px solid #A7F3D0;
  color: #065F46;
}

.form-status-alert.alert-danger {
  display: block;
  background-color: var(--color-status-danger-bg);
  border: 1px solid #FECACA;
  color: #991B1B;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Footer --- */
.site-footer {
  background-color: #0A1927;
  color: #8C9EA8;
  padding-top: 64px;
  padding-bottom: 36px;
  border-top: 1px solid #142E47;
  font-size: 0.875rem;
}

.footer-top-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-col p {
  margin-top: 14px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #9AB0BE;
  max-width: 320px;
}

.footer-col-title {
  color: #FFFFFF;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  color: #9AB0BE;
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: #FFFFFF;
}

.footer-bottom-row {
  padding-top: 28px;
  border-top: 1px solid #142E47;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.75rem;
  color: #6D8292;
}

/* Privacy Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(10, 25, 39, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: #FFFFFF;
  color: var(--color-text-main);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 32px;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.modal-close-btn {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--color-primary);
}

.modal-body {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.modal-body h4 {
  color: var(--color-primary);
  font-weight: 700;
  margin-top: 14px;
  margin-bottom: 6px;
}

/* --- Media Queries / Responsive Adaptations --- */
@media (max-width: 1024px) {
  :root {
    --header-height: 68px;
  }

  .nav-desktop, .header-cta-group .btn {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.375rem;
  }
  
  .friction-grid, .pillars-grid, .steps-grid, .features-grid, .hero-features-strip {
    grid-template-columns: 1fr;
  }

  .steps-grid::before {
    display: none;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roi-container-grid {
    grid-template-columns: 1fr;
  }

  .conversion-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-top-row {
    grid-template-columns: 1fr 1fr;
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }
}

@media (max-width: 768px) {
  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .desktop-only {
    display: none;
  }

  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-title {
    font-size: 1.875rem;
    line-height: 1.22;
  }

  .hero-desc {
    font-size: 0.96875rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .friction-grid, .pillars-grid, .steps-grid, .features-grid, .hero-features-strip {
    grid-template-columns: 1fr;
  }

  .form-row-2col {
    grid-template-columns: 1fr;
  }

  .contact-channel-selector {
    flex-direction: column;
  }

  .cta-banner-inline {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
  }

  .lead-form-card {
    padding: 28px 20px;
  }

  .footer-top-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .comparison-table {
    display: block;
    overflow-x: auto;
  }

  .conversion-copy-block h2 {
    font-size: 1.75rem;
  }

  .conversion-section {
    padding-top: 64px;
    padding-bottom: 64px;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal, .reveal-left, .reveal-right {
    opacity: 1;
    transform: none;
  }
}