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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #0ea5e9;
  --purple: #9333ea;
  --purple-dark: #7e22ce;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.95);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  padding-bottom: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-text {
  font-size: 34px;
  font-weight: 700;
  color: var(--text-dark);
}

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

.nav a {
  text-decoration: none;
  color: var(--text-light);
  font-weight: 500;
  font-size: 18px;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--primary);
}

.cta-button {
  background: var(--primary);
  color: white;
  padding: 10px 24px;
  border-radius: 8px;
  transition: all 0.2s;
}

.cta-button:hover {
  background: var(--primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  color: white;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.6;
  margin-bottom: 40px;
  opacity: 0.95;
}

.download-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.download-button {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  text-decoration: none;
  transition: all 0.3s;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.download-button:hover {
  background: rgba(0, 0, 0, 1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.download-label {
  font-size: 11px;
  opacity: 0.8;
}

.download-store {
  font-size: 18px;
  font-weight: 600;
}

.pricing-info {
  margin-top: 24px;
  font-size: 14px;
  opacity: 0.85;
}

.slider-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin: 0 auto;
  max-width: 450px;
}

.slider-wrapper {
  overflow: hidden;
  width: 300px;
  height: 600px;
}

.slider-track {
  display: flex;
  transition: transform 0.4s ease-in-out;
  height: 100%;
}

.slider-image {
  width: 300px;
  height: 600px;
  object-fit: cover;
  flex-shrink: 0;
}

.slider-button {
  background: rgba(255, 255, 255, 0.95);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  color: var(--text-dark);
}

.slider-button:hover {
  background: white;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.slider-button:active {
  transform: scale(0.95);
}

.slider-button svg {
  width: 24px;
  height: 24px;
}

.features {
  padding: 100px 0;
  background: var(--bg-white);
}

.section-title {
  font-size: 42px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 20px;
  text-align: center;
  color: var(--text-light);
  margin-bottom: 60px;
  line-height: 1.5;
  position: relative;
  top: -5px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.2;
}

.feature-description {
  color: var(--text-light);
  line-height: 1.6;
}

.safety {
  padding: 100px 0;
  background:
    linear-gradient(rgba(15, 23, 42, 0.65), rgba(15, 23, 42, 0.65)),
    url('https://images.pexels.com/photos/266487/pexels-photo-266487.jpeg?auto=compress&cs=tinysrgb&w=1920') center/cover;
  position: relative;
}

.safety .section-title {
  color: white;
}

.safety .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.safety-intro {
  max-width: 900px;
  margin: 0 auto 60px;
  text-align: center;
}

.safety-intro p {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
}

.safety-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-bottom: 80px;
}

.safety-feature-card {
  background: var(--bg-light);
  padding: 40px;
  border-radius: 16px;
  text-align: center;
  transition: all 0.3s;
}

.safety-feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.safety-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin: 0 auto 24px;
}

.safety-feature-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
  color: var(--text-dark);
}

.safety-feature-description {
  color: var(--text-light);
  line-height: 1.6;
  font-size: 16px;
}

.safety-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.stat-card {
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  padding: 48px 32px;
  border-radius: 16px;
  text-align: center;
  color: white;
  box-shadow: var(--shadow-md);
  transition: all 0.3s;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.stat-number {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1;
}

.stat-label {
  font-size: 16px;
  opacity: 0.95;
  line-height: 1.5;
}

.use-cases {
  padding: 100px 0;
  background: #f1f5f9;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}

.use-case {
  background: white;
  padding: 32px;
  border-radius: 16px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.use-case:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}


.use-case h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary);
}

.use-case p {
  color: var(--text-light);
  line-height: 1.6;
}

.cta-section {
  padding: 100px 0;
  background: var(--bg-white);
  text-align: center;
}

.cta-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
  color: var(--text-dark);
}

.cta-highlight {
  color: var(--purple);
}

.cta-message {
  font-size: 20px;
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 1.6;
}

.cta-section .download-buttons {
  justify-content: center;
}

.footer {
  background: var(--text-dark);
  color: white;
  padding: 32px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
  color: white;
}

.footer-tagline {
  margin-top: 12px;
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

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

.footer-bottom {
  text-align: center;
  opacity: 0.6;
  font-size: 14px;
}


@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 16px;
  }

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

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

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .slider-wrapper {
    width: 250px;
    height: 500px;
  }

  .slider-image {
    width: 250px;
    height: 500px;
  }

  .slider-button {
    width: 40px;
    height: 40px;
  }

  .slider-button svg {
    width: 20px;
    height: 20px;
  }

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

  .section-subtitle {
    font-size: 18px;
  }

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

  .footer-content {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    flex-direction: column;
    gap: 16px;
  }

  .download-buttons {
    flex-direction: column;
  }

  .download-button {
    width: 100%;
    justify-content: center;
  }
}