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

  html { scroll-behavior: smooth; scroll-padding-top: 80px; }

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* Header scroll state */
  #site-header.scrolled {
    background: rgba(253, 251, 247, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(6, 78, 59, 0.08);
  }

  /* Mobile menu */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
  }

  #mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
  }

  /* Hamburger animation */
  .menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }
  .menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
  }
  .menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.25rem;
  }

  /* Scroll reveal base — content always visible, animation only when JS runs */
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
  }

  /* Subtle service card hover lift */
  .service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  }
  .service-card:hover {
    transform: translateY(-4px);
  }

  /* Selection color */
  ::selection {
    background: rgba(6, 78, 59, 0.15);
    color: #064e3b;
  }