:root {
  --happy-ink: #17202a;
  --happy-muted: #5f6b76;
  --happy-blue: #1d75d8;
  --happy-blue-dark: #1457a2;
  --happy-yellow: #ffd166;
  --happy-green: #2a9d8f;
  --happy-coral: #ef6f6c;
  --happy-bg: #f7fbff;
  --happy-line: #dce7f2;
}

body {
  color: var(--happy-ink);
  background: #fff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.navbar-brand {
  color: var(--happy-blue-dark);
}

.site-navbar .nav-link {
  color: var(--happy-ink);
  font-weight: 650;
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link:focus {
  color: var(--happy-blue-dark);
}

.btn-primary {
  --bs-btn-bg: var(--happy-blue);
  --bs-btn-border-color: var(--happy-blue);
  --bs-btn-hover-bg: var(--happy-blue-dark);
  --bs-btn-hover-border-color: var(--happy-blue-dark);
}

.hero-section {
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 209, 102, 0.34), transparent 26%),
    radial-gradient(circle at 84% 18%, rgba(42, 157, 143, 0.18), transparent 28%),
    linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
  padding: 4.5rem 0 3rem;
}

.hero-section h1,
.section-block h2,
.contact-panel h2 {
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.05;
}

.hero-section h1 {
  max-width: 720px;
  font-size: clamp(2.4rem, 8vw, 4.9rem);
}

.hero-copy,
.section-copy,
.pricing-panel p,
.contact-panel p {
  color: var(--happy-muted);
  font-size: 1.1rem;
  line-height: 1.65;
}

.hero-copy {
  max-width: 650px;
  margin: 1.25rem 0 1.75rem;
}

.section-kicker {
  color: var(--happy-blue-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.science-board {
  aspect-ratio: 1;
  background: #fff;
  border: 1px solid var(--happy-line);
  border-radius: 1.5rem;
  box-shadow: 0 24px 70px rgba(23, 32, 42, 0.12);
  display: grid;
  isolation: isolate;
  min-height: 280px;
  overflow: hidden;
  place-items: center;
  position: relative;
}

.beaker {
  color: var(--happy-blue-dark);
  font-size: clamp(5rem, 24vw, 9rem);
  line-height: 1;
  z-index: 2;
}

.formula {
  background: var(--happy-yellow);
  border-radius: 999px;
  bottom: 12%;
  color: var(--happy-ink);
  font-weight: 900;
  padding: 0.55rem 1rem;
  position: absolute;
  right: 12%;
  z-index: 3;
}

.orbit {
  border: 2px dashed rgba(29, 117, 216, 0.28);
  border-radius: 50%;
  position: absolute;
}

.orbit-one {
  height: 72%;
  width: 72%;
}

.orbit-two {
  height: 46%;
  transform: rotate(32deg);
  width: 88%;
}

.bubble {
  border-radius: 50%;
  position: absolute;
}

.bubble-one {
  background: var(--happy-coral);
  height: 44px;
  left: 16%;
  top: 18%;
  width: 44px;
}

.bubble-two {
  background: var(--happy-green);
  height: 28px;
  right: 22%;
  top: 22%;
  width: 28px;
}

.bubble-three {
  background: var(--happy-yellow);
  bottom: 22%;
  height: 36px;
  left: 22%;
  width: 36px;
}

.section-block {
  padding: 4rem 0;
}

.page-hero {
  padding: 4rem 0 3rem;
}

.page-hero h1 {
  font-size: clamp(2.25rem, 7vw, 4rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.05;
  max-width: 760px;
}

.section-muted {
  background: var(--happy-bg);
}

.quick-facts {
  padding-top: 2rem;
}

.fact-tile,
.content-card,
.theme-card,
.trust-item {
  background: #fff;
  border: 1px solid var(--happy-line);
  border-radius: 0.75rem;
  height: 100%;
}

.fact-tile {
  padding: 1rem;
}

.fact-tile span {
  color: var(--happy-muted);
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.fact-tile strong {
  display: block;
  font-size: 1.2rem;
}

.content-card,
.theme-card,
.trust-item {
  padding: 1.25rem;
}

.content-card h3,
.theme-card h3,
.trust-item h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
}

.content-card p,
.theme-card p,
.trust-item p,
.timeline-item span {
  color: var(--happy-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.icon-badge,
.theme-icon {
  align-items: center;
  background: #edf7ff;
  border-radius: 0.75rem;
  display: inline-flex;
  font-size: 1.6rem;
  height: 3rem;
  justify-content: center;
  margin-bottom: 1rem;
  width: 3rem;
}

.theme-card {
  box-shadow: 0 16px 40px rgba(23, 32, 42, 0.07);
}

.section-heading {
  margin-bottom: 2rem;
  max-width: 720px;
}

.timeline {
  border-left: 3px solid var(--happy-blue);
  display: grid;
  gap: 1rem;
  padding-left: 1.25rem;
}

.timeline-item {
  background: #fff;
  border: 1px solid var(--happy-line);
  border-radius: 0.75rem;
  padding: 1rem;
  position: relative;
}

.timeline-item::before {
  background: var(--happy-yellow);
  border: 3px solid #fff;
  border-radius: 50%;
  content: "";
  height: 16px;
  left: -1.85rem;
  position: absolute;
  top: 1.25rem;
  width: 16px;
}

.timeline-item strong,
.timeline-item span {
  display: block;
}

.trust-section {
  background: #fffdf7;
}

.pricing-panel,
.contact-panel {
  border-radius: 1rem;
  padding: 1.5rem;
}

.pricing-panel {
  align-items: center;
  background: #fff;
  border: 1px solid var(--happy-line);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.accordion-button {
  font-weight: 800;
}

.accordion-button:not(.collapsed) {
  background: #edf7ff;
  color: var(--happy-blue-dark);
}

.contact-cta {
  background: var(--happy-blue-dark);
  padding: 4rem 0;
}

.contact-panel {
  background:
    radial-gradient(circle at top right, rgba(255, 209, 102, 0.35), transparent 30%),
    var(--happy-blue);
  color: #fff;
}

.contact-panel .section-kicker,
.contact-panel p {
  color: #fff;
}

.email-line {
  font-weight: 800;
  margin: 1rem 0 0;
}

.site-footer {
  background: #101820;
  color: #dce7f2;
  padding: 1.25rem 0;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-note {
  color: #aebdca;
  display: block;
  margin-top: 0.25rem;
}

.footer-link {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.footer-link:hover,
.footer-link:focus {
  color: var(--happy-yellow);
}

@media (min-width: 768px) {
  .hero-section {
    padding: 6rem 0 4.5rem;
  }

  .section-block {
    padding: 5rem 0;
  }

  .page-hero {
    padding: 5rem 0 4rem;
  }

  .pricing-panel {
    flex-direction: row;
    justify-content: space-between;
    padding: 2rem;
  }

  .pricing-panel > div {
    max-width: 720px;
  }

  .contact-panel {
    padding: 3rem;
  }

  .site-footer .container {
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
  }
}