/* ==========================================================================
   METAMI Learning OS — Public Landing Page Stylesheet (v1.0.0-rc5)
   Compliant with Visual System Specification v1, Fluid Typography &
   Child-First Responsive UX Standards (Tested 320px – 1440px+)
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #1F4E5B;
  --color-primary-dark: #153842;
  --color-primary-light: #EAF4F3;
  --color-primary-subtle: #F2F8F7;

  --color-coral: #D6553B;
  --color-coral-dark: #B53F28;
  --color-coral-light: #FDEEEB;

  --color-yellow: #F4B236;
  --color-yellow-dark: #D99110;
  --color-yellow-light: #FFF8E7;
  --color-yellow-tint: #FFF4D6;

  --color-bg: #FFFDF8;
  --color-bg-alt: #F9F6F0;
  --color-surface: #FFFFFF;
  --color-card-bg: #F4F9F8;
  --color-card-border: #DCECE9;

  --color-text-main: #222A29;
  --color-text-body: #2C3333;
  --color-text-muted: #5F7573;
  --color-line-stroke: #C4DCD9;

  /* Typography */
  --font-family-heading: 'Mitr', 'Thonburi', Tahoma, sans-serif;
  --font-family-body: 'IBM Plex Sans Thai Looped', 'Leelawadee UI', Tahoma, sans-serif;

  /* Fluid Typography Scale */
  --font-size-hero-title: clamp(28px, 5.2vw, 46px);
  --font-size-hero-sub: clamp(16px, 2.4vw, 21px);
  --font-size-section-title: clamp(24px, 3.8vw, 34px);
  --font-size-card-title: clamp(18px, 2.5vw, 22px);
  --font-size-body: clamp(15.5px, 1.8vw, 17.5px);
  --font-size-small: clamp(13.5px, 1.4vw, 15px);

  /* Line Heights */
  --line-height-thai: 1.8;
  --line-height-heading: 1.3;

  /* Spacing & Radii */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(31, 78, 91, 0.04);
  --shadow-md: 0 8px 24px rgba(31, 78, 91, 0.08);
  --shadow-lg: 0 16px 40px rgba(31, 78, 91, 0.12);
  --shadow-coral: 0 8px 24px rgba(224, 109, 83, 0.25);
  --shadow-teal: 0 8px 24px rgba(31, 78, 91, 0.2);

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Global Reset & Base Setup
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-thai);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

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

/* Accessibility Focus States */
:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family-heading);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(16px, 4vw, 32px);
  padding-right: clamp(16px, 4vw, 32px);
}

.section {
  padding-top: clamp(48px, 8vw, 88px);
  padding-bottom: clamp(48px, 8vw, 88px);
}

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

.section-tint {
  background: linear-gradient(180deg, var(--color-primary-subtle) 0%, var(--color-bg) 100%);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: clamp(32px, 6vw, 56px);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-small);
  font-weight: 600;
  margin-bottom: 12px;
}

.section-badge.badge-coral {
  background: var(--color-coral-light);
  color: var(--color-coral-dark);
}

.section-badge.badge-yellow {
  background: var(--color-yellow-light);
  color: var(--color-yellow-dark);
}

.section-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-section-title);
  font-weight: 700;
  color: var(--color-primary);
  line-height: var(--line-height-heading);
  margin-bottom: 14px;
}

.section-sub {
  font-size: var(--font-size-body);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-header-bg, rgba(255, 253, 248, 0.94));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-header-border, rgba(196, 220, 217, 0.5));
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: clamp(64px, 8vw, 76px);
  gap: clamp(12px, 2vw, 28px);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex: 0 0 auto;
  margin-right: clamp(16px, 2.5vw, 36px);
}

.brand-dots {
  display: flex;
  gap: 5px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-coral { background-color: var(--color-coral); }
.dot-yellow { background-color: var(--color-yellow); }
.dot-teal   { background-color: var(--color-primary); }

.brand-name {
  font-family: var(--font-family-heading);
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.nav-desktop {
  display: none;
  flex: 1 1 auto;
  justify-content: center;
  align-items: center;
  min-width: 0;
}

@media (min-width: 1080px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 1vw, 14px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-family-heading);
  font-size: clamp(13.5px, 0.95vw, 15px);
  font-weight: 500;
  color: var(--color-text-main);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap !important;
  display: inline-block;
  text-decoration: none;
}

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

.nav-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1vw, 12px);
  margin-left: clamp(12px, 2vw, 24px);
}

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-family-heading);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-teal);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap !important;
}

.btn-nav-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(31, 78, 91, 0.28);
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  cursor: pointer;
}

@media (min-width: 1080px) {
  .mobile-menu-toggle {
    display: none;
  }
}

@media (max-width: 1079px) {
  .btn-nav-cta {
    display: none;
  }
  .nav-actions {
    margin-left: auto;
  }
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  padding: 24px;
  z-index: 999;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  border-top: 1px solid var(--color-line-stroke);
}

.mobile-nav-drawer.is-open {
  display: flex;
}

.mobile-nav-link {
  font-family: var(--font-family-heading);
  font-size: 19px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 12px 0;
  border-bottom: 1px solid var(--color-primary-light);
  white-space: nowrap;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: clamp(32px, 6vw, 64px);
  padding-bottom: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, var(--color-primary-subtle) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 40px);
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(20px, 3vw, 36px);
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-yellow-light);
  border: 1px solid var(--color-yellow);
  color: var(--color-yellow-dark);
  font-family: var(--font-family-heading);
  font-size: clamp(13px, 1.4vw, 15px);
  font-weight: 600;
  margin-bottom: 18px;
}

.hero-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-hero-title);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-title span.highlight {
  color: var(--color-coral);
  position: relative;
  display: inline-block;
}

.hero-sub {
  font-size: var(--font-size-hero-sub);
  color: var(--color-text-body);
  line-height: 1.75;
  margin-bottom: 28px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  width: 100%;
  margin-bottom: 24px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 28px;
  border-radius: var(--radius-pill);
  background: var(--color-coral);
  color: #FFFFFF;
  font-family: var(--font-family-heading);
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 600;
  box-shadow: var(--shadow-coral);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  flex: 1 1 240px;
  max-width: 320px;
}

.btn-hero-primary:hover {
  background: var(--color-coral-dark);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(224, 109, 83, 0.35);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  font-family: var(--font-family-heading);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  transition: transform var(--transition-fast), background var(--transition-fast);
  flex: 1 1 200px;
  max-width: 280px;
}

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

.btn-hero-secondary-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  border: 2px solid #FFFFFF;
  font-family: var(--font-family-heading);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  flex: 1 1 200px;
  max-width: 280px;
}

.btn-hero-secondary-dark:hover {
  background: #FFFFFF;
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Semantically distinct disabled states */
button:disabled,
button[aria-disabled="true"],
a.disabled,
a[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed !important;
  pointer-events: none;
  filter: grayscale(40%);
}

.hero-trust-points {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 20px);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-item svg {
  color: #3C6E4A;
  flex-shrink: 0;
}

.hero-visual-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid #FFFFFF;
  background: #FFFFFF;
  transition: transform var(--transition-normal);
  justify-self: end;
  width: 100%;
  max-width: 560px;
  margin-left: auto;
}

.hero-visual-card:hover {
  transform: translateY(-4px);
}

/* ==========================================================================
   4 Pillars Section
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: clamp(20px, 3vw, 28px);
}

.pillar-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: clamp(24px, 4vw, 32px);
  border: 1.5px solid var(--color-line-stroke);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.pillar-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-teal   { background: var(--color-primary-light); color: var(--color-primary); }
.icon-coral  { background: var(--color-coral-light);   color: var(--color-coral); }
.icon-yellow { background: var(--color-yellow-light);  color: var(--color-yellow-dark); }
.icon-mint   { background: #E6F4EA; color: #2D6A4F; }

.pillar-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-card-title);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.pillar-desc {
  font-size: var(--font-size-body);
  color: var(--color-text-body);
  line-height: 1.7;
}

/* ==========================================================================
   How It Works (3 Steps)
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(24px, 4vw, 36px);
  position: relative;
}

.step-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: clamp(28px, 4vw, 36px);
  border: 1.5px solid var(--color-line-stroke);
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-number {
  position: absolute;
  top: -18px;
  left: 28px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-family-heading);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.step-card:nth-child(2) .step-number {
  background: var(--color-coral);
}

.step-card:nth-child(3) .step-number {
  background: var(--color-yellow);
  color: var(--color-primary);
}

.step-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-card-title);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 10px;
  margin-bottom: 12px;
}

.step-desc {
  font-size: var(--font-size-body);
  color: var(--color-text-body);
  line-height: 1.7;
}

/* ==========================================================================
   Featured Product: Book 01 Showcase
   ========================================================================== */
.product-showcase {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-line-stroke);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.product-showcase-header {
  padding: clamp(28px, 4vw, 40px);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.product-showcase-title-wrap {
  max-width: 600px;
}

.product-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(244, 178, 54, 0.25);
  border: 1px solid var(--color-yellow);
  color: var(--color-yellow);
  font-family: var(--font-family-heading);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
}

.product-main-title {
  font-family: var(--font-family-heading);
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 8px;
}

.product-subtitle {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--color-primary-light);
  line-height: 1.6;
}

.product-showcase-body {
  padding: clamp(24px, 4vw, 40px);
}

.preview-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--color-primary-light);
  padding-bottom: 12px;
}

.preview-tab-btn {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-family: var(--font-family-heading);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-primary-subtle);
  transition: all var(--transition-fast);
}

.preview-tab-btn.active {
  background: var(--color-primary);
  color: #FFFFFF;
}

.preview-content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 840px) {
  .preview-content-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.preview-screen-frame {
  border-radius: var(--radius-md);
  border: 2px solid var(--color-line-stroke);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-bg);
}

.preview-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.preview-info-title {
  font-family: var(--font-family-heading);
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 600;
  color: var(--color-primary);
}

.preview-info-desc {
  font-size: var(--font-size-body);
  color: var(--color-text-body);
  line-height: 1.75;
}

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

.preview-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15.5px;
}

.preview-feature-item svg {
  color: var(--color-coral);
  flex-shrink: 0;
  margin-top: 4px;
}

.product-cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line-stroke);
}

/* ==========================================================================
   Parent Trust & Highlights
   ========================================================================== */
.trust-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(20px, 3vw, 28px);
}

.trust-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: clamp(24px, 3.5vw, 32px);
  border: 1.5px solid var(--color-line-stroke);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.trust-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-yellow-light);
  color: var(--color-yellow-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.trust-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-card-title);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.trust-desc {
  font-size: var(--font-size-body);
  color: var(--color-text-body);
  line-height: 1.7;
}

/* Product Truth Banner */
.product-truth-box {
  margin-top: clamp(32px, 5vw, 48px);
  background: var(--color-primary-light);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  padding: clamp(24px, 4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.truth-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-family-heading);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-primary);
}

.truth-text {
  font-size: 15.5px;
  color: var(--color-text-body);
  line-height: 1.75;
}

/* ==========================================================================
   Parent Tool Entry — METAMI Support Map
   Restrained by design: a calm secondary entry inside the parents section.
   Book 01 remains the primary learning product and keeps every hero CTA.
   ========================================================================== */
.parent-tool-card {
  display: flex;
  gap: clamp(16px, 3vw, 26px);
  align-items: flex-start;
  background: var(--color-surface);
  border: 1.5px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3.6vw, 32px);
  margin-top: 20px;
  box-shadow: var(--shadow-sm);
}

.parent-tool-icon {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.parent-tool-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.parent-tool-body { flex: 1 1 auto; min-width: 0; }

.parent-tool-eyebrow {
  display: inline-block;
  font-family: var(--font-family-heading);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.parent-tool-title {
  font-family: var(--font-family-heading);
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.parent-tool-desc {
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.75;
  margin-bottom: 10px;
}

.parent-tool-boundary {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.btn-parent-tool {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-pill);
  padding: 11px 22px;
  min-height: 46px;
  font-family: var(--font-family-heading);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn-parent-tool:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-parent-tool:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

@media (max-width: 560px) {
  .parent-tool-card { flex-direction: column; }
  .btn-parent-tool { width: 100%; justify-content: center; }
}

/* ==========================================================================
   Future Learning Worlds (Ecosystem Framing)
   ========================================================================== */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.ecosystem-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  border: 1.5px solid var(--color-line-stroke);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}

.ecosystem-card.current-active {
  border-color: var(--color-coral);
  box-shadow: var(--shadow-coral);
}

.ecosystem-card:hover {
  transform: translateY(-4px);
}

/* Future Worlds icon system.
   One visual grammar across all five cards: identical 24x24 viewBox, identical
   1.75 stroke weight, identical 48px container, identical radius. Icons are
   decorative — the card heading already names the world — so every one carries
   aria-hidden and adds no accessible name. */
.ecosystem-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  flex: 0 0 auto;
}

.ecosystem-card.current-active .ecosystem-icon {
  background: var(--color-coral-light);
  color: var(--color-coral-dark);
}

.ecosystem-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ecosystem-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-family-heading);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  width: fit-content;
}

.badge-now { background: var(--color-coral-light); color: var(--color-coral-dark); }
.badge-future { background: var(--color-primary-light); color: var(--color-primary); }

.ecosystem-name {
  font-family: var(--font-family-heading);
  /* Sized so all five world names hold a single line at every viewport --
     a wrapped title on one card unbalances the whole row. */
  font-size: clamp(17.5px, 1.35vw, 19px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.ecosystem-desc {
  font-size: 14.5px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Final CTA Banner
   ========================================================================== */
.final-cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  text-align: center;
  padding-top: clamp(60px, 10vw, 100px);
  padding-bottom: clamp(60px, 10vw, 100px);
}

.final-cta-content {
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta-title {
  font-family: var(--font-family-heading);
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
}

.final-cta-sub {
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--color-primary-light);
  line-height: 1.75;
  margin-bottom: 36px;
}

.final-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #172A30;
  color: #A0B2B5;
  padding-top: 48px;
  padding-bottom: 36px;
  font-size: 14.5px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 36px;
  margin-bottom: 36px;
}

.footer-col-title {
  font-family: var(--font-family-heading);
  font-size: 16px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
}

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

.footer-links a {
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-version-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.1);
  color: #EAF4F3;
  font-size: 13px;
  font-family: var(--font-family-heading);
}

/* Caregiver Learning Journey Grid */
.journey-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 840px) {
  .journey-grid { grid-template-columns: 1fr; }
}

.journey-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.journey-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.journey-card-featured {
  border-color: var(--color-coral);
  background: linear-gradient(180deg, var(--color-coral-light) 0%, #FFFFFF 60%);
  box-shadow: var(--shadow-md);
}

.journey-step-badge {
  font-family: var(--font-family-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  display: inline-block;
  width: fit-content;
  margin-bottom: 14px;
}

.journey-card-featured .journey-step-badge {
  background: var(--color-coral);
  color: #FFFFFF;
}

.journey-card-title {
  font-family: var(--font-family-heading);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 10px;
}

.journey-card-desc {
  font-size: 14.5px;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.journey-btn {
  width: 100%;
  text-align: center;
}

body.nav-open { overflow: hidden; }

/* ==========================================================================
   Visual System V2 — minimal but premium family experience
   ========================================================================== */
.container { width: min(calc(100% - 40px), var(--content-max, 1240px)); }
.section { padding: clamp(72px, 8vw, 112px) 0; }
.section-alt { background: var(--surface-muted); }
.section-header { max-width: 760px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-title { font-weight: 600; letter-spacing: -0.018em; }
.section-sub { max-width: 620px; margin-inline: auto; line-height: 1.75; }
.section-badge { border-radius: 8px; letter-spacing: .025em; }
.section-emblem {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  border-radius: 17px;
  color: var(--brand);
  background: color-mix(in srgb, var(--brand) 10%, var(--surface-raised));
}
.section-emblem svg { width: 28px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.section-emblem-calm { color: var(--accent-green); background: color-mix(in srgb, var(--accent-green) 10%, var(--surface-raised)); }

.nav-container { height: 68px; }
.brand-wrap { margin-right: clamp(10px, 2vw, 26px); }
.brand-dot { width: 9px; height: 9px; }
.brand-name { font-size: clamp(20px, 2vw, 22px); font-weight: 600; }
.nav-links { gap: clamp(10px, 1.8vw, 26px); }
.nav-link { min-height: 44px; display: inline-flex; align-items: center; padding: 6px 2px; border-radius: 0; }
.nav-link:hover { background: transparent; color: var(--brand); }
.btn-nav-cta {
  min-height: 44px;
  padding: 8px 17px;
  border-radius: 12px;
  background: var(--accent-coral);
  box-shadow: none;
}
.btn-nav-cta:hover { background: var(--accent-coral-hover); box-shadow: var(--shadow-soft); transform: translateY(-1px); }
.mobile-menu-toggle { background: var(--surface); border: 1px solid var(--border); }
.mobile-nav-drawer { top: 68px; background: var(--page-bg); padding: 22px max(20px, calc((100vw - 520px) / 2)); gap: 6px; }
.mobile-nav-link { min-height: 54px; display: flex; align-items: center; padding: 8px 2px; border-bottom-color: var(--border); color: var(--text-primary); font-size: 18px; }
.mobile-nav-cta { margin-top: 18px; }
.mobile-nav-cta .btn-hero-primary { width: 100%; }

.hero-section {
  padding: clamp(54px, 7vw, 92px) 0 clamp(66px, 8vw, 106px);
  background: linear-gradient(150deg, color-mix(in srgb, var(--brand) 7%, var(--page-bg)) 0%, var(--page-bg) 46%, color-mix(in srgb, var(--accent-yellow) 5%, var(--page-bg)) 100%);
}
.hero-grid { gap: clamp(34px, 5vw, 68px); }
@media (min-width: 960px) { .hero-grid { grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr); } }
.hero-content { max-width: 670px; }
.hero-badge { padding: 7px 11px; border-radius: 9px; background: var(--surface-raised); border-color: var(--border); color: var(--text-secondary); box-shadow: none; }
.hero-badge svg { color: var(--accent-yellow); }
.hero-title { margin-top: 20px; font-size: clamp(34px, 3.8vw, 48px); font-weight: 600; line-height: 1.24; letter-spacing: -0.022em; }
.hero-sub { max-width: 610px; margin-top: 22px; font-size: clamp(17px, 1.65vw, 20px); line-height: 1.82; }
.hero-cta-group { margin-top: 28px; gap: 18px; align-items: center; }
.btn-hero-primary, .btn-hero-secondary, .btn-hero-secondary-dark, .journey-btn, .btn-parent-tool {
  min-height: 48px;
  border-radius: 12px;
  box-shadow: none;
}
.btn-hero-primary { background: var(--accent-coral); }
.hero-cta-group > .btn-hero-primary { flex: 0 1 auto; }
.btn-hero-primary:hover { background: var(--accent-coral-hover); transform: translateY(-1px); box-shadow: var(--shadow-soft); }
.btn-hero-secondary { padding-inline: 6px; border-color: transparent; background: transparent; color: var(--brand); }
.hero-cta-group > .btn-hero-secondary { flex: 0 1 auto; }
.btn-hero-secondary:hover { background: transparent; border-color: transparent; text-decoration: underline; text-underline-offset: 4px; transform: none; }
.hero-trust-points { margin-top: 24px; gap: 8px 20px; color: var(--text-soft); }
.hero-visual-card { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
.hero-visual-card:hover { transform: none; box-shadow: var(--shadow); }
.hero-visual-card img { display: block; width: 100%; height: auto; transform: scale(1.035); transform-origin: center; }

.discovery-section { padding: 34px 0 44px; background: var(--page-bg); }
.discovery-intro { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.discovery-intro .section-badge { margin: 0; }
.discovery-intro .section-title { max-width: 690px; margin: 0; text-align: right; font-size: clamp(22px, 3vw, 30px); }
.discovery-links { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--border); }
.discovery-link { min-height: 112px; display: flex; align-items: center; gap: 18px; padding: 24px; color: var(--text-primary); text-decoration: none; border-right: 1px solid var(--border); transition: background var(--transition-fast); }
.discovery-link:last-child { border-right: 0; }
.discovery-link:hover { background: var(--surface); }
.discovery-icon { width: 46px; height: 46px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 14px; color: var(--brand); background: var(--surface-muted); }
.discovery-primary .discovery-icon { color: var(--accent-coral); }
.discovery-icon svg { width: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.discovery-link strong { display: block; font-family: var(--font-family-heading); font-size: 18px; font-weight: 600; }
.discovery-link small { display: block; margin-top: 3px; color: var(--text-soft); font-size: 14px; }

.pillars-grid { gap: 0; border-block: 1px solid var(--border); }
.pillar-card { padding: 28px clamp(20px, 2.5vw, 34px); border: 0; border-right: 1px solid var(--border); border-radius: 0; background: transparent; box-shadow: none; }
.pillar-card:last-child { border-right: 0; }
.pillar-card:hover { transform: none; border-color: var(--border); box-shadow: none; background: var(--surface); }
.pillar-icon-wrap { width: 46px; height: 46px; border-radius: 14px; color: var(--brand); background: var(--surface-muted); }
.pillar-title { margin-top: 18px; font-weight: 600; }
.pillar-desc { line-height: 1.75; }

.steps-grid, .journey-grid { gap: 18px; }
.step-card, .journey-card, .trust-card { border-width: 1px; border-color: var(--border); border-radius: var(--radius-md); box-shadow: none; }
.step-card:hover, .journey-card:hover, .trust-card:hover { transform: none; box-shadow: var(--shadow-soft); }
.step-number { width: 48px; height: 48px; font-size: 19px; box-shadow: none; }
.journey-card { padding: 26px; background: var(--surface-raised); }
.journey-card-featured { border-color: var(--border-strong); background: var(--surface-raised); box-shadow: none; }
.journey-step-badge, .journey-card-featured .journey-step-badge { padding: 4px 9px; border-radius: 7px; background: var(--surface-muted); color: var(--brand); }
.journey-card-title { font-weight: 600; }
.trust-cards-grid { gap: 12px; }
.trust-card { padding: 24px; background: transparent; }
.trust-icon { width: 44px; height: 44px; border-radius: 13px; }
.trust-title { font-weight: 600; }
.product-truth-box { margin-top: 32px; border-width: 1px; border-radius: var(--radius-md); background: var(--surface-raised); box-shadow: none; }
.truth-header { background: var(--surface-muted); color: var(--text-primary); }
.truth-text { color: var(--text-secondary); }
.parent-tool-card { gap: 22px; padding: 28px 6px; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: transparent; box-shadow: none; }
.parent-tool-card:hover { transform: none; box-shadow: none; }
.parent-tool-icon { width: 48px; height: 48px; border-radius: 14px; }
.parent-tool-title { font-weight: 600; }
.parent-tool-eyebrow { letter-spacing: .025em; }
.parent-tool-boundary { padding: 0; border: 0; background: transparent; color: var(--text-soft); }
.btn-parent-tool { width: fit-content; padding-inline: 0; border: 0; background: transparent; color: var(--brand); }
.btn-parent-tool:hover { background: transparent; color: var(--brand-hover); }

.ecosystem-grid { gap: 0; border-block: 1px solid var(--border); }
.ecosystem-card { padding: 26px 18px; border: 0; border-right: 1px solid var(--border); border-radius: 0; background: transparent; box-shadow: none; }
.ecosystem-card:last-child { border-right: 0; }
.ecosystem-card:hover { transform: none; background: var(--surface); box-shadow: none; }
.ecosystem-card.current-active { border-color: var(--border); background: var(--surface); box-shadow: none; }
.ecosystem-icon { width: 46px; height: 46px; border-radius: 14px; }
.ecosystem-name { font-weight: 600; }
.ecosystem-desc { line-height: 1.68; }
.ecosystem-badge { border-radius: 7px; }

.final-cta-section { padding: clamp(72px, 8vw, 104px) 0; background: #243D3B; }
.final-cta-title { font-weight: 600; }
.site-footer { background: #1E3433; }
.footer-grid { gap: clamp(32px, 6vw, 72px); }
.footer-version-badge { border-radius: 7px; }

html[data-color-scheme="dark"] .hero-section {
  background: linear-gradient(150deg, #1C2223 0%, var(--page-bg) 56%, #211F1A 100%);
}
html[data-color-scheme="dark"] .hero-visual-card,
html[data-color-scheme="dark"] .journey-card-featured,
html[data-color-scheme="dark"] .product-truth-box { background: var(--surface-raised) !important; }
html[data-color-scheme="dark"] .discovery-section,
html[data-color-scheme="dark"] .section { color: var(--text-primary); }

@media (max-width: 960px) {
  .discovery-intro { display: block; }
  .discovery-intro .section-title { margin-top: 12px; text-align: left; }
  .discovery-links { grid-template-columns: 1fr; }
  .discovery-link { min-height: 92px; border-right: 0; border-bottom: 1px solid var(--border); }
  .discovery-link:last-child { border-bottom: 0; }
  .pillars-grid { grid-template-columns: repeat(2, 1fr); }
  .pillar-card:nth-child(2) { border-right: 0; }
  .pillar-card:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .ecosystem-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--content-max, 1240px)); }
  .section { padding: 64px 0; }
  .hero-section { padding-top: 44px; }
  .hero-title { font-size: clamp(32px, 10vw, 42px); }
  .hero-sub { font-size: 17px; }
  .hero-trust-points { display: grid; grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .pillar-card, .pillar-card:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--border); }
  .pillar-card:last-child { border-bottom: 0; }
  .ecosystem-grid { grid-template-columns: 1fr; }
  .ecosystem-card { border-right: 0; border-bottom: 1px solid var(--border); }
  .ecosystem-card:last-child { border-bottom: 0; }
}

/* ==========================================================================
   Responsive & Print Optimizations
   ========================================================================== */
@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
  }
  .btn-hero-primary, .btn-hero-secondary {
    max-width: 100%;
    width: 100%;
  }
}

@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;
  }
}