:root {
  --bg: #FFFBF5;
  --bg-warm: #FFF5E8;
  --fg: #2D2A26;
  --fg-light: #6B6560;
  --accent: #E85D3A;
  --accent-soft: #F4A261;
  --teal: #2A9D8F;
  --teal-soft: #B5E8E0;
  --purple: #7B68AE;
  --purple-soft: #D4CCE8;
  --yellow: #F9C74F;
  --yellow-soft: #FDE8A0;
  --radius: 16px;
  --radius-sm: 8px;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Outfit', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 80px 0 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.shape-1 {
  width: 500px;
  height: 500px;
  background: var(--yellow-soft);
  top: -100px;
  right: -100px;
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: var(--teal-soft);
  bottom: -80px;
  left: -80px;
}

.shape-3 {
  width: 300px;
  height: 300px;
  background: var(--purple-soft);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: var(--teal-soft);
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--yellow);
  border-radius: 4px;
  z-index: -1;
  opacity: 0.6;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-light);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-cta {
  margin-top: 36px;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 16px 36px;
  border-radius: 100px;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(232,93,58,0.35);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(232,93,58,0.4);
}

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

.hero-letters {
  position: absolute;
  z-index: 0;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
}

.letter {
  position: absolute;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  opacity: 0.06;
  font-size: 12rem;
}

.letter-a {
  top: 5%;
  left: 5%;
  color: var(--accent);
  transform: rotate(-12deg);
}

.letter-b {
  bottom: 10%;
  right: 8%;
  color: var(--teal);
  transform: rotate(8deg);
}

.letter-c {
  top: 60%;
  left: 75%;
  color: var(--purple);
  transform: rotate(-5deg);
  font-size: 8rem;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 0;
  background: var(--bg-warm);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: center;
}

.stat-number {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--fg-light);
  line-height: 1.5;
}

.problem-text h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.problem-text p {
  color: var(--fg-light);
  margin-bottom: 16px;
  font-size: 1rem;
}

.problem-text p:last-child {
  color: var(--fg);
  font-weight: 500;
}

/* ---- FEATURES ---- */
.features {
  padding: 100px 0;
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.feature-card {
  background: white;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-light);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ---- SCIENCE ---- */
.science {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--teal-soft) 0%, var(--bg) 60%);
}

.science-content h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.science-content > p {
  color: var(--fg-light);
  max-width: 600px;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.science-points {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.science-point {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.point-marker {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--teal);
  margin-top: 8px;
}

.science-point strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.science-point p {
  color: var(--fg-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 0;
  text-align: center;
}

.closing-content {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.15;
}

.closing-text {
  color: var(--fg-light);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.closing-vision {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid rgba(0,0,0,0.06);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
}

.footer-note {
  font-size: 0.8rem;
  color: var(--fg-light);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  .hero {
    min-height: 70vh;
    padding: 60px 0 40px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stat-number {
    font-size: 3rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .closing h2 {
    font-size: 2rem;
  }

  .letter {
    font-size: 6rem;
  }

  .letter-c {
    font-size: 4rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .lede {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }
}