:root {
  --color-primary: #2E3A8C;
  --color-secondary: #0F766E;
  --color-accent: #D97706;
  --color-bg: #F7F6F2;
  --color-surface: #FFFFFF;
  --color-text: #111827;
  --color-muted: #4B5563;
  --color-border: #D1D5DB;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(17,24,39,0.10);
  --maxw: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  margin: 0;
  padding: 0;
  font-size: 16px;
}

@media (min-width: 768px) {
  body {
    font-size: 18px;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 19px;
  }
}

/* Swiss typography layout with strong grid rhythm */
body {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-height: 100vh;
  gap: 2rem;
}

@media (min-width: 768px) {
  body {
    gap: 3rem;
  }
}

/* Header and Navigation */
header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

@media (min-width: 768px) {
  nav {
    padding: 1.5rem 2rem;
  }
}

.nav-brand a {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.025em;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .nav-links {
    gap: 2rem;
  }
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .nav-links a {
    transition: none;
  }
}

/* Breadcrumbs */
.breadcrumbs {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

@media (min-width: 768px) {
  .breadcrumbs {
    padding: 0 2rem;
  }
}

.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  text-decoration: underline;
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Main content area with generous whitespace */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

@media (min-width: 768px) {
  main {
    padding: 0 2rem;
  }
}

@media (min-width: 1024px) {
  main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* Typography with strong hierarchy */
h1 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 2rem 0;
  letter-spacing: -0.025em;
}

@media (min-width: 768px) {
  h1 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3rem;
    margin-bottom: 3rem;
  }
}

h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin: 3rem 0 1.5rem 0;
  letter-spacing: -0.025em;
}

@media (min-width: 768px) {
  h2 {
    font-size: 1.75rem;
    margin: 3.5rem 0 2rem 0;
  }
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  margin: 2rem 0 1rem 0;
}

@media (min-width: 768px) {
  h3 {
    font-size: 1.375rem;
  }
}

p {
  margin: 0 0 1.5rem 0;
  color: var(--color-text);
}

@media (min-width: 768px) {
  p {
    margin-bottom: 1.75rem;
  }
}

/* Links */
a {
  color: var(--color-primary);
  transition: color 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--color-secondary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  a {
    transition: none;
  }
}

/* Lists */
ul, ol {
  margin: 0 0 1.5rem 0;
  padding-left: 1.5rem;
}

@media (min-width: 768px) {
  ul, ol {
    margin-bottom: 1.75rem;
  }
}

li {
  margin-bottom: 0.5rem;
}

/* Blockquote styling with left border accent and background surface tint */
blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-style: italic;
  color: var(--color-text);
}

@media (min-width: 768px) {
  blockquote {
    margin: 2.5rem 0;
    padding: 2rem 2.5rem;
  }
}

blockquote p {
  margin: 0;
  font-size: 1.125rem;
  line-height: 1.6;
}

@media (min-width: 768px) {
  blockquote p {
    font-size: 1.25rem;
  }
}

/* Table styling with zebra rows, sticky header, and caption emphasis */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

@media (min-width: 768px) {
  table {
    margin: 2.5rem 0;
  }
}

caption {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  padding: 1rem 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  margin: 0;
}

@media (min-width: 768px) {
  caption {
    font-size: 1.25rem;
    padding: 1.25rem 2rem;
  }
}

th {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-weight: 600;
  text-align: left;
  padding: 1rem 1.5rem;
  border-bottom: 2px solid var(--color-border);
}

@media (min-width: 1024px) {
  th {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

@media (min-width: 768px) {
  th {
    padding: 1.25rem 2rem;
  }
}

td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

@media (min-width: 768px) {
  td {
    padding: 1.25rem 2rem;
  }
}

tbody tr:nth-child(even) {
  background-color: var(--color-bg);
}

tbody tr:hover {
  background-color: rgba(46, 58, 140, 0.05);
}

@media (prefers-reduced-motion: reduce) {
  tbody tr {
    transition: none;
  }
}

/* Accordion styling for details/summary with custom marker and focus-visible ring */
details {
  margin: 1.5rem 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 768px) {
  details {
    margin: 2rem 0;
  }
}

summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
  list-style: none;
  position: relative;
}

@media (min-width: 768px) {
  summary {
    padding: 1.5rem 2rem;
  }
}

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

summary::before {
  content: '+';
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: transform 0.2s ease;
}

@media (min-width: 768px) {
  summary::before {
    right: 2rem;
  }
}

details[open] summary::before {
  content: '−';
  transform: translateY(-50%) rotate(0deg);
}

summary:hover,
summary:focus-visible {
  background-color: rgba(46, 58, 140, 0.05);
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
  summary,
  summary::before {
    transition: none;
  }
}

.faq-answer {
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .faq-answer {
    padding: 2rem;
  }
}

.faq-answer p {
  margin-bottom: 1rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* Sections with proper spacing */
section {
  margin: 3rem 0;
}

@media (min-width: 768px) {
  section {
    margin: 4rem 0;
  }
}

section:first-child {
  margin-top: 0;
}

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

/* Footer */
footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  footer {
    padding: 2.5rem 2rem;
  }
}

footer p {
  margin: 0;
  max-width: var(--maxw);
  margin: 0 auto;
}

/* Focus-visible states with subtle transitions */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Mobile-first responsive adjustments */
@media (max-width: 767px) {
  .nav-links {
    gap: 1rem;
  }
  
  .nav-links a {
    font-size: 0.875rem;
  }
  
  table {
    font-size: 0.875rem;
  }
  
  th,
  td {
    padding: 0.75rem 1rem;
  }
  
  caption {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }
}

/* Utility classes for content structure */
.faq-section {
  margin: 2rem 0;
}

.faq-resources {
  margin: 3rem 0 0 0;
  padding: 2rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

@media (min-width: 768px) {
  .faq-resources {
    margin: 4rem 0 0 0;
    padding: 2.5rem;
  }
}