:root {
  /* Color Tokens */
  --color-brand: #155b73;
  --color-brand-dark: #0e3d4e;
  --color-accent: #d9a441;
  --color-ink: #1f2937;
  --color-muted: #4b5563;
  --color-wash: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;

  /* Layout Tokens */
  --max-width: 1120px;
  --max-width-narrow: 760px;
  --border-radius: 4px;

  /* Typography Tokens */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --line-height-body: 1.65;
  --line-height-heading: 1.25;

  /* Spacing Tokens */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-family);
  font-size: 1.125rem; /* 18px base for clear senior readability */
  line-height: var(--line-height-body);
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -5rem;
  left: var(--space-sm);
  z-index: 100;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface);
  border: 2px solid var(--color-brand);
  color: var(--color-brand-dark);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Base Elements */
a {
  color: var(--color-brand);
  text-underline-offset: 4px;
}

a:hover {
  color: var(--color-brand-dark);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

h1, h2, h3 {
  line-height: var(--line-height-heading);
  color: var(--color-ink);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

p {
  margin-bottom: var(--space-sm);
}

p:last-child {
  margin-bottom: 0;
}

/* Container */
.wrap {
  width: min(var(--max-width), calc(100% - 2rem));
  margin-inline: auto;
}

.wrap-narrow {
  width: min(var(--max-width-narrow), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header & Navigation */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.header-row {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.5rem;
}

.brand span {
  color: var(--color-brand);
}

.brand small {
  display: block;
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
}

.nav a[aria-current="page"] {
  color: var(--color-brand);
  border-bottom: 2px solid var(--color-brand);
}

.nav a:hover {
  text-decoration: underline;
}

.nav-cta {
  padding: 0.6rem 1.2rem;
  background-color: var(--color-brand);
  color: var(--color-surface) !important;
  border-radius: var(--border-radius);
}

.nav-cta:hover {
  background-color: var(--color-brand-dark);
  text-decoration: none !important;
}

.menu-toggle {
  display: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

/* Layout Sections */
.hero {
  padding: var(--space-xl) 0;
  background-color: var(--color-wash);
  border-bottom: 1px solid var(--color-border);
}

.kicker {
  color: var(--color-brand);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}

.lead {
  font-size: 1.25rem;
  color: var(--color-muted);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
}

.section-muted {
  background-color: var(--color-wash);
  border-block: 1px solid var(--color-border);
}

.section-intro {
  margin-bottom: var(--space-lg);
}

/* Callout Box / Notice */
.notice {
  padding: var(--space-md);
  background-color: var(--color-surface);
  border-left: 5px solid var(--color-brand);
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
}

/* Buttons & Actions */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  background-color: var(--color-brand);
  color: var(--color-surface);
  text-decoration: none;
  font-weight: 700;
  border: 2px solid var(--color-brand);
  border-radius: var(--border-radius);
}

.button:hover {
  background-color: var(--color-brand-dark);
  border-color: var(--color-brand-dark);
  color: var(--color-surface);
}

.button.secondary {
  background-color: var(--color-surface);
  color: var(--color-brand);
}

.button.secondary:hover {
  background-color: var(--color-wash);
  color: var(--color-brand-dark);
}

/* Service Grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-brand);
}

.service-card p {
  color: var(--color-muted);
  font-size: 1rem;
}

/* Two Column Layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* Meta / Small Text */
.meta-text {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-top: var(--space-xs);
}

/* Footer */
.site-footer {
  background-color: var(--color-ink);
  color: var(--color-surface);
  padding: var(--space-lg) 0;
  font-size: 0.95rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
}

.site-footer a {
  color: var(--color-surface);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Responsive Behavior */
@media (max-width: 820px) {
  .header-row {
    flex-wrap: wrap;
    padding: var(--space-xs) 0;
  }

  .menu-toggle {
    display: block;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: var(--space-xs);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: var(--space-xs) 0;
    border-top: 1px solid var(--color-border);
  }

  .nav .nav-cta {
    text-align: center;
    margin-top: var(--space-xs);
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .footer-row {
    flex-direction: column;
  }
}

@media (max-width: 540px) {
  .service-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }
}