:root {
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0B1220;
  --color-muted: #475569;
  --color-border: #CBD5E1;
  --color-primary: #1E3A8A;
  --color-secondary: #0F766E;
  --color-accent: #D97706;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11,18,32,0.10);
  --maxw: 1120px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --line-height: 1.65;
  --line-length: 72ch;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Swiss Typography System */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-top: 2rem;
  margin-bottom: 1rem;
  text-align: left;
  color: var(--color-text);
}

h1 {
  font-size: 2rem;
  margin-top: 0;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  color: var(--color-secondary);
}

p {
  margin: 0 0 1.25rem;
  max-width: var(--line-length);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-secondary);
  text-decoration-color: var(--color-secondary);
}

a:active {
  color: var(--color-accent);
}

a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.site-header .container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.main-nav a {
  text-decoration: none;
  font-weight: 500;
  padding: 0.375rem 0;
  display: inline-block;
}

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

/* Main Content */
main {
  padding: 2rem 0 3rem;
}

article {
  background-color: var(--color-surface);
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--color-primary);
}

.page-header h1 {
  margin-bottom: 0;
}

section {
  margin-bottom: 2.5rem;
}

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

/* Breadcrumbs */
.breadcrumbs {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: ">";
  margin-left: 0.5rem;
  color: var(--color-muted);
}

.breadcrumbs a {
  color: var(--color-muted);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

caption {
  text-align: left;
  font-weight: 600;
  padding: 0.75rem 1rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-size: 1rem;
}

th, td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-bg);
  font-weight: 600;
  color: var(--color-text);
}

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

tbody tr:nth-child(odd) {
  background-color: var(--color-surface);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* Aside / Checklist */
aside.checklist-aside {
  background-color: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

aside.checklist-aside h3 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--color-accent);
}

aside.checklist-aside ul {
  margin: 0;
  padding-left: 1.25rem;
}

aside.checklist-aside li {
  margin-bottom: 0.5rem;
}

aside.checklist-aside li:last-child {
  margin-bottom: 0;
}

/* Blockquote */
blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background-color: var(--color-bg);
  border-left: 4px solid var(--color-secondary);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-muted);
}

blockquote p {
  margin: 0;
}

/* Details/Summary Accordion */
details {
  margin: 1rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  overflow: hidden;
}

details + details {
  margin-top: 0.5rem;
}

summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  background-color: var(--color-bg);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background-color 0.2s ease;
}

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

summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-radius: 50%;
  font-size: 1.125rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

details[open] summary::before {
  content: "−";
  background-color: var(--color-secondary);
  transform: rotate(180deg);
}

summary:hover {
  background-color: var(--color-border);
}

summary:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: -3px;
}

.faq-answer {
  padding: 1.25rem;
  border-top: 1px solid var(--color-border);
}

/* Internal Navigation */
.internal-nav {
  background-color: var(--color-bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  margin-top: 2rem;
}

.internal-nav h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.internal-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.internal-nav a {
  font-weight: 500;
}

/* Footer */
.site-footer {
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: 1.5rem 0;
  margin-top: 3rem;
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 0.875rem;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  details[open] summary::before {
    transform: none;
  }
}

/* Tablet Breakpoint */
@media (min-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .site-header .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  
  .site-name {
    font-size: 1.5rem;
  }
  
  article {
    padding: 2.5rem 2rem;
  }
  
  .internal-nav ul {
    flex-direction: row;
    gap: 2rem;
  }
}

/* Desktop Breakpoint */
@media (min-width: 1024px) {
  h1 {
    font-size: 2.75rem;
  }
  
  body {
    font-size: 1.0625rem;
  }
  
  article {
    padding: 3rem 2.5rem;
  }
  
  /* Sticky table header on desktop */
  table {
    display: block;
    overflow-x: auto;
  }
  
  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }
  
  th {
    position: sticky;
    top: 0;
    background-color: var(--color-bg);
  }
  
  .main-nav ul {
    gap: 2rem;
  }
}