/* Performance-optimized reset */
*, *::before, *::after { 
    box-sizing: border-box; 
  }
  
  html { 
    -webkit-text-size-adjust: 100%; 
    scroll-behavior: smooth; 
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  body { 
    margin: 0; 
    font-family: 'Inter', ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif; 
    line-height: 1.6; 
    color: #1f2937; 
    background: #ffffff;
    min-height: 100vh;
    font-display: swap;
  }
  
  main { 
    padding-top: 60px; 
  }
  
  img, svg { 
    display: block; 
    max-width: 100%; 
    height: auto;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
  
  a { 
    color: inherit; 
    text-decoration: none; 
  }
  
  ul { 
    margin: 0; 
    padding-left: 1.25rem; 
  }
  
  h1, h2, h3, h4, h5, h6 { 
    line-height: 1.2; 
    margin: 0 0 0.5rem; 
    color: #1f2937; 
    font-weight: 600;
  }
  
  p { 
    margin: 0 0 1rem; 
  }
  
  /* Theme Variables */
  :root {
    --primary-orange: #d2691e;
    --primary-orange-dark: #b8571a;
    --primary-orange-light: #e6834a;
    --secondary-blue: #1f2937;
    --secondary-blue-light: #374151;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --background-white: #ffffff;
    --background-light: #f8fafc;
    --background-dark: #1f2937;
    --border-light: #e5e7eb;
    --border-orange: #d2691e;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
  }
  
  /* Layout */
  .container { 
    width: min(1200px, 92%); 
    margin-inline: auto; 
    padding-inline: clamp(1rem, 3vw, 2rem);
  }
  
  /* Buttons */
  .button { 
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem; 
    border: none; 
    border-radius: var(--radius-md); 
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 44px;
    white-space: nowrap;
  }
  
  .button.primary { 
    background: var(--primary-orange); 
    color: white;
    box-shadow: var(--shadow-sm);
  }
  
  .button.primary:hover { 
    background: var(--primary-orange-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  .button.outline { 
    background: transparent; 
    color: var(--primary-orange); 
    border: 2px solid var(--primary-orange);
  }
  
  .button.outline:hover { 
    background: var(--primary-orange); 
    color: white;
  }
  
  .button.ghost { 
    background: rgba(255,255,255,0.1); 
    color: white; 
    border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(4px);
  }
  
  .button.ghost:hover { 
    background: rgba(255,255,255,0.2); 
    border-color: white;
  }
  
  /* Sections */
  .section { 
    padding: clamp(3rem, 6vw, 5rem) 0; 
  }
  
  .section-title { 
    font-size: clamp(2rem, 4vw, 2.5rem); 
    font-weight: 700; 
    text-align: center; 
    margin-bottom: 1rem;
    color: var(--text-primary);
  }
  
  .section-subtitle { 
    font-size: clamp(1rem, 2vw, 1.2rem); 
    text-align: center; 
    color: var(--text-secondary); 
    max-width: 60ch; 
    margin: 0 auto 2rem;
  }
  
  /* Cards */
  .card { 
    background: var(--background-white); 
    border: 1px solid var(--border-light); 
    border-radius: var(--radius-lg); 
    padding: 1.5rem; 
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
  }
  
  .card:hover { 
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }
  
  /* Grid Systems */
  .grid { 
    display: grid; 
    gap: 1.5rem; 
  }
  
  .grid-2 { 
    grid-template-columns: 1fr; 
  }
  
  .grid-3 { 
    grid-template-columns: 1fr; 
  }
  
  .grid-4 { 
    grid-template-columns: 1fr; 
  }
  
  @media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
  }
  
  @media (min-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
  }
  
  /* Utilities */
  .text-center { text-align: center; }
  .text-left { text-align: left; }
  .text-right { text-align: right; }
  
  .bg-light { background: var(--background-light); }
  .bg-dark { background: var(--background-dark); color: white; }
  
  /* Responsive */
  @media (max-width: 768px) {
    .container { 
      width: 95%; 
      padding-inline: 1rem;
    }
    
    main { 
      padding-top: 55px; 
    }
    
    .button { 
      padding: 0.875rem 1.25rem;
      font-size: 0.9rem;
    }
  }
  
  /* Accessibility */
  @media (prefers-reduced-motion: reduce) {
    * {
      animation: none !important;
      transition: none !important;
    }
  }
  
  /* Focus states */
  .button:focus-visible,
  .card:focus-visible {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
  }