/* =============================================
   Base Reset & Global Styles
   ============================================= */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  background-color: #ffffff;
  color: #2d3748;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =============================================
   Layout
   ============================================= */

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 40px 0;
}

/* =============================================
   Typography
   ============================================= */

h1, h2, h3 {
  color: #1a202c;
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

p {
  margin-bottom: 0.85em;
  font-size: 1rem;
  text-align: justify;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  color: #1a202c;
  font-weight: 600;
}

/* =============================================
   Accent / Brand Colors
   ============================================= */

.accent {
  color: #319795;
}

/* =============================================
   Hero Section
   ============================================= */

.hero {
  padding: 48px 0 36px;
  border-bottom: 1px solid #e2e8f0;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #319795;
  background-color: #e6fffa;
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 14px;
}

.hero__headline {
  font-size: 2.25rem;
  line-height: 1.15;
  color: #1a202c;
  margin-bottom: 14px;
  letter-spacing: -0.025em;
}

.hero__subtext {
  font-size: 1.05rem;
  color: #4a5568;
  max-width: 580px;
  margin-bottom: 0;
  line-height: 1.5;
}

/* =============================================
   Problem Section
   ============================================= */

.problem {
  background-color: #f7fafc;
}

.problem p {
  color: #4a5568;
}

/* =============================================
   Research Section
   ============================================= */

.research {
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.research__quote {
  border-left: 3px solid #319795;
  padding: 10px 18px;
  margin: 18px 0;
  background-color: #f0fff4;
  border-radius: 0 6px 6px 0;
  font-style: italic;
  color: #2d6a4f;
}

/* =============================================
   Recommendation Section
   ============================================= */

.recommendation {
  background-color: #ffffff;
}

.feature-list {
  list-style: none;
  margin: 16px 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  color: #2d3748;
}

.feature-list__dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #319795;
  margin-top: 7px;
}

/* =============================================
   Social Proof Card
   ============================================= */

.proof {
  background: linear-gradient(135deg, #e6fffa, #ebf8ff);
}

.proof__card {
  background: #ffffff;
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
  text-align: center;
}

.proof__card-headline {
  font-size: 0.9rem;
  font-weight: 600;
  color: #4a5568;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 20px;
}

.proof__stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.proof__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.proof__stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #319795;
  line-height: 1;
}

.proof__stat-label {
  font-size: 0.875rem;
  color: #718096;
  text-align: center;
  line-height: 1.3;
  max-width: 120px;
}

/* =============================================
   CTA Button (Teal — Primary)
   ============================================= */

.btn-primary {
  display: inline-block;
  background-color: #319795;
  color: #ffffff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  letter-spacing: 0.01em;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #2c7a7b;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(49, 151, 149, 0.35);
  outline: none;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-primary--large {
  font-size: 1.125rem;
  padding: 16px 40px;
}

.btn-primary--full {
  display: block;
  text-align: center;
  width: 100%;
}

/* CTA Section */
.cta-section {
  text-align: center;
  padding: 24px 0;
}

.cta-section .btn-primary {
  margin-top: 8px;
}

/* =============================================
   Email Capture Section
   ============================================= */

.email-capture {
  background-color: #f7fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
  text-align: center;
}

.email-capture__subtext {
  color: #4a5568;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.email-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: stretch;
}

.email-form__input {
  flex: 1 1 auto;
  max-width: 320px;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 1rem;
  color: #2d3748;
  background-color: #ffffff;
  border: 1.5px solid #cbd5e0;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.email-form__input::placeholder {
  color: #a0aec0;
}

.email-form__input:focus {
  border-color: #319795;
  box-shadow: 0 0 0 3px rgba(49, 151, 149, 0.15);
}

.btn-email {
  display: inline-block;
  background-color: #e53e3e;
  color: #ffffff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  padding: 13px 24px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.18s ease, transform 0.18s ease;
  letter-spacing: 0.01em;
}

.btn-email:hover,
.btn-email:focus {
  background-color: #c53030;
  transform: translateY(-1px);
  outline: none;
}

.btn-email:active {
  transform: translateY(0);
}

/* =============================================
   Bottom CTA Section
   ============================================= */

.bottom-cta {
  text-align: center;
}

.bottom-cta h2 {
  margin-bottom: 12px;
}

.bottom-cta p {
  color: #4a5568;
  margin-bottom: 18px;
}

/* =============================================
   Footer
   ============================================= */

.footer {
  padding: 24px 0;
  border-top: 1px solid #e2e8f0;
}

.footer__disclosure {
  font-size: 0.8125rem;
  color: #a0aec0;
  line-height: 1.6;
  text-align: center;
}

/* =============================================
   Divider
   ============================================= */

.divider {
  height: 1px;
  background-color: #e2e8f0;
  margin: 0;
  border: none;
}

/* =============================================
   Responsive — 600px breakpoint
   ============================================= */

@media (max-width: 600px) {
  section {
    padding: 28px 0;
  }

  .hero {
    padding: 32px 0 24px;
  }

  .hero__headline {
    font-size: 1.75rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.375rem;
  }

  .proof__stats {
    gap: 20px;
  }

  .proof__stat-value {
    font-size: 1.375rem;
  }

  .email-form {
    flex-direction: column;
    align-items: stretch;
  }

  .email-form__input {
    max-width: 100%;
  }

  .btn-email {
    text-align: center;
  }

  .btn-primary--large {
    font-size: 1rem;
    padding: 14px 24px;
  }

  .btn-primary--full-mobile {
    display: block;
    text-align: center;
    width: 100%;
  }

  .proof__card {
    padding: 28px 20px;
  }
}