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

:root {
  --black: #0d1b2a;
  --white: #ffffff;
  --bg: #f2f9fd;
  --cyan: #00c6f6;
  --cyan-light: #4dd8f9;
  --cyan-dim: rgba(0, 198, 246, 0.1);
  --orange: #ff7100;
  --orange-dim: rgba(255, 113, 0, 0.1);
  --surface: #ffffff;
  --surface-border: rgba(0, 198, 246, 0.22);
  --divider: rgba(13, 27, 42, 0.1);
  --text-primary: #0d1b2a;
  --text-secondary: rgba(13, 27, 42, 0.62);
  --text-muted: rgba(13, 27, 42, 0.38);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Fira Code', monospace;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;

  --shadow-cyan: 0 4px 24px rgba(0, 198, 246, 0.18);
  --shadow-orange: 0 4px 24px rgba(255, 113, 0, 0.22);
  --shadow-card: 0 2px 16px rgba(13, 27, 42, 0.07);

  --ease: cubic-bezier(0.2, 0.9, 0.3, 1);

  --z-canvas: -1;
  --z-content: 1;
  --z-nav: 100;
  --z-toast: 200;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.65;
  overflow-x: hidden;
}

img, video {
  max-width: 100%;
  display: block;
}

ul[role="list"] {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font-family: inherit;
}

em {
  font-style: italic;
  color: var(--cyan);
}

strong {
  font-weight: 700;
}

details summary::-webkit-details-marker {
  display: none;
}