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

:root {
  color-scheme: light;
  --font-sans: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", Arial, sans-serif;
  --primary: #1f1f1f;
  --secondary: #74777c;
  --background: #ffffff;
  --accent: #FF6B2C;
  --on-accent: #ffffff;
  --stroke: rgba(0, 0, 0, 0.08);
  --surface: #f2f2f2;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --primary: #eeeeee;
    --secondary: #c7c7c7;
    --background: #131313;
    --accent: #FFB074;
    --on-accent: #131313;
    --stroke: rgba(255, 255, 255, 0.08);
    --surface: #1f1f1f;
  }
}

body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--primary);
  -webkit-font-smoothing: antialiased;
}

/* Hero */

.hero-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 18px;
}

.hero-brand img {
  width: 64px;
  height: 64px;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 64px 40px;
  gap: 24px;
}

.hero-title {
  font-size: 72px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 670px;
}

.hero-subtitle {
  font-size: 24px;
  font-weight: 400;
  color: var(--secondary);
  line-height: 1.5;
  max-width: 780px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--primary);
  color: var(--background);
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 600;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.hero-cta:hover {
  opacity: 0.85;
}

/* Demo */

.demo-section {
  display: flex;
  justify-content: center;
  padding: 0 40px;
}

.demo-frame {
  width: 100%;
  max-width: 1140px;
  --frame-pad: min(12px, 1.05vw);
  --frame-inner-radius: min(24px, 2.1vw);
  padding: var(--frame-pad);
  background: var(--surface);
  border-radius: calc(var(--frame-inner-radius) + var(--frame-pad));
}

.demo-screen {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--frame-inner-radius);
  box-shadow: 0 0 0 1px var(--stroke);
}

/* Features */

.section-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 48px;
}

.features {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 64px 40px;
}

.features-grid {
  width: 100%;
  max-width: 1140px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 40px;
  text-align: center;
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.feature svg {
  color: var(--primary);
}

.feature h3 {
  font-size: 18px;
  font-weight: 600;
}

.feature p {
  font-size: 14px;
  color: var(--secondary);
  line-height: 1.5;
  max-width: 280px;
}

/* Footer */

.footer {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 64px 40px;
}

.footer a {
  font-size: 14px;
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Tablet */

@media (max-width: 768px) {
  .hero {
    padding: 48px 24px;
    gap: 20px;
  }

  .hero-brand img {
    width: 48px;
    height: 48px;
  }

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

  .hero-subtitle {
    font-size: 20px;
  }

  .hero-cta {
    font-size: 16px;
    padding: 12px 28px;
  }

  .demo-section {
    padding: 0 24px;
  }

  .section-title {
    font-size: 28px;
    margin-bottom: 36px;
  }

  .features {
    padding: 48px 24px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 32px;
  }

  .footer {
    padding: 48px 24px;
  }
}

/* Mobile */

@media (max-width: 480px) {
  .hero {
    padding: 40px 20px;
    gap: 16px;
  }

  .hero-brand img {
    width: 40px;
    height: 40px;
  }

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

  .hero-subtitle {
    font-size: 17px;
  }

  .hero-cta {
    font-size: 15px;
    padding: 12px 24px;
  }

  .demo-section {
    padding: 0 20px;
  }

  .section-title {
    font-size: 24px;
    margin-bottom: 28px;
  }

  .features {
    padding: 40px 20px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .feature svg {
    width: 40px;
    height: 40px;
  }

  .footer {
    padding: 40px 20px;
  }
}