/* Apple-Inspired Modern Design */
/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-text: #1d1d1f;
  --secondary-text: #6e6e73;
  --accent-blue: #0071e3;
  --accent-hover: #0077ed;
  --background: #ffffff;
  --surface: #f5f5f7;
  --border: #d2d2d7;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.5;
  color: var(--primary-text);
  background: var(--background);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 22px;
}

.container-narrow {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  transition: background 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 22px;
  height: 44px;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 17px;
  color: var(--primary-text);
  text-decoration: none;
}

.logo-icon {
  width: 28px;
  height: 28px;
  margin-right: 8px;
  border-radius: 6px;
}

.logo-text {
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--primary-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  transition: opacity 0.3s ease;
  opacity: 0.8;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-links a.nav-cta {
  color: var(--accent-blue);
  font-weight: 500;
  opacity: 1;
}

.nav-links a.nav-cta:hover {
  text-decoration: underline;
}

/* Hero Section */
.hero {
  margin-top: 44px;
  padding: 80px 0 100px;
  background: var(--background);
  text-align: center;
}

.hero-content {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

.hero-eyebrow {
  font-size: 21px;
  line-height: 1.381;
  font-weight: 600;
  letter-spacing: 0.011em;
  color: var(--secondary-text);
  margin-bottom: 16px;
}

.hero-title {
  font-size: 80px;
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--primary-text);
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 28px;
  line-height: 1.42857;
  font-weight: 400;
  letter-spacing: 0.007em;
  color: var(--secondary-text);
  margin-bottom: 32px;
}

.hero-cta {
  margin-bottom: 40px;
}

.hero-footnote {
  font-size: 17px;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  color: var(--secondary-text);
  margin-top: 16px;
}

.hero-visual {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 22px;
}

.hero-video {
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

/* Primary Button */
.primary-button {
  display: inline-block;
  background: var(--accent-blue);
  color: white;
  font-size: 17px;
  line-height: 1.17648;
  font-weight: 400;
  letter-spacing: -0.022em;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 980px;
  transition: background 0.3s ease, transform 0.2s ease;
}

.primary-button:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
}

/* Story Section */
.story-section {
  padding: 120px 0;
  background: var(--surface);
}

.story-content {
  max-width: 800px;
  margin: 0 auto;
}

.section-title {
  font-size: 48px;
  line-height: 1.08349;
  font-weight: 700;
  letter-spacing: -0.003em;
  color: var(--primary-text);
  text-align: center;
  margin-bottom: 48px;
}

.story-text {
  font-size: 21px;
  line-height: 1.52381;
  font-weight: 400;
  letter-spacing: 0.011em;
  color: var(--primary-text);
}

.story-text p {
  margin-bottom: 24px;
}

.story-intro {
  font-size: 24px;
  line-height: 1.5;
  font-weight: 500;
}

.story-highlight {
  font-size: 24px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--primary-text);
}

/* Features Section */
.features {
  padding: 120px 0;
  background: var(--background);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.feature-card {
  text-align: center;
  padding: 40px 20px;
}

.feature-icon {
  font-size: 64px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 24px;
  line-height: 1.16667;
  font-weight: 700;
  letter-spacing: 0.009em;
  color: var(--primary-text);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 17px;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  color: var(--secondary-text);
}

/* Demo Section */
.demo {
  padding: 120px 0;
  background: var(--surface);
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 60px;
  margin-top: 60px;
}

.demo-card {
  text-align: center;
}

.demo-video {
  border-radius: 18px;
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

.demo-video video {
  width: 100%;
  height: auto;
  display: block;
}

.demo-info h3 {
  font-size: 28px;
  line-height: 1.14286;
  font-weight: 700;
  letter-spacing: 0.007em;
  color: var(--primary-text);
  margin-bottom: 12px;
}

.demo-info p {
  font-size: 19px;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  color: var(--secondary-text);
}

/* Use Cases Section */
.use-cases {
  padding: 120px 0;
  background: var(--background);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.use-case {
  text-align: center;
  padding: 40px 20px;
}

.use-case-icon {
  font-size: 64px;
  margin-bottom: 20px;
}

.use-case h3 {
  font-size: 21px;
  line-height: 1.19048;
  font-weight: 700;
  letter-spacing: 0.011em;
  color: var(--primary-text);
  margin-bottom: 8px;
}

.use-case p {
  font-size: 17px;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  color: var(--secondary-text);
}

/* CTA Section */
.cta-section {
  padding: 140px 0;
  background: var(--surface);
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  font-size: 56px;
  line-height: 1.07143;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--primary-text);
  margin-bottom: 24px;
}

.cta-subtitle {
  font-size: 21px;
  line-height: 1.52381;
  font-weight: 400;
  letter-spacing: 0.011em;
  color: var(--secondary-text);
  margin-bottom: 32px;
}

.cta-button {
  font-size: 21px;
  padding: 16px 32px;
}

.cta-footnote {
  font-size: 14px;
  line-height: 1.42859;
  font-weight: 400;
  letter-spacing: -0.016em;
  color: var(--secondary-text);
  margin-top: 16px;
}

/* Footer */
.footer {
  padding: 60px 0;
  background: var(--surface);
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 980px;
  margin: 0 auto;
}

.footer-logo {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 28px;
  height: 28px;
  margin-right: 8px;
  border-radius: 6px;
}

.footer-text {
  font-size: 14px;
  line-height: 1.42859;
  font-weight: 400;
  letter-spacing: -0.016em;
  color: var(--secondary-text);
  margin-bottom: 12px;
}

.footer-links {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--accent-blue);
  text-decoration: none;
  font-size: 12px;
  line-height: 1.33337;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-copyright {
  font-size: 12px;
  line-height: 1.33337;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--secondary-text);
}

/* Responsive Design */
@media (max-width: 1068px) {
  .hero-title {
    font-size: 64px;
  }

  .hero-subtitle {
    font-size: 24px;
  }

  .section-title {
    font-size: 40px;
  }

  .cta-title {
    font-size: 48px;
  }

  .demo-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 734px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding: 60px 0 80px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-subtitle {
    font-size: 21px;
  }

  .section-title {
    font-size: 32px;
  }

  .story-text {
    font-size: 19px;
  }

  .story-intro,
  .story-highlight {
    font-size: 21px;
  }

  .cta-title {
    font-size: 40px;
  }

  .cta-subtitle {
    font-size: 19px;
  }

  .features-grid,
  .use-cases-grid {
    grid-template-columns: 1fr;
  }

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

  .story-section,
  .features,
  .demo,
  .use-cases {
    padding: 80px 0;
  }

  .cta-section {
    padding: 100px 0;
  }
}

/* Smooth Animations */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .use-case,
  .demo-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .feature-card.visible,
  .use-case.visible,
  .demo-card.visible {
    opacity: 1;
    transform: translateY(0);
  }
}