:root {
  --color-bg: #F7FAFF;
  --color-surface: #FFFFFF;
  --color-text: #0B1220;
  --color-muted: #4B5A73;
  --color-border: #D6E2F2;
  --color-primary: #1F6FEB;
  --color-secondary: #0E7C86;
  --color-accent: #F05A28;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11,18,32,0.10);
  --space: 1rem;
  --maxw: 72rem;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  font-size: 16px;
}

body {
  display: grid;
  grid-template-areas: 
    "header"
    "main"
    "footer";
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

main {
  grid-area: main;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--space) * 2) var(--space);
  width: 100%;
}

footer {
  grid-area: footer;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space);
  text-align: center;
  color: var(--color-muted);
}

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

.nav-brand h2 {
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: calc(var(--space) * 1.5);
}

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

.nav-links a:hover {
  color: var(--color-primary);
}

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

.breadcrumbs {
  margin-bottom: calc(var(--space) * 1.5);
  font-size: 0.9rem;
  color: var(--color-muted);
}

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

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

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: calc(var(--space) * 2);
  color: var(--color-text);
}

h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
  margin-top: calc(var(--space) * 2.5);
  margin-bottom: var(--space);
  color: var(--color-text);
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-top: calc(var(--space) * 1.5);
  margin-bottom: calc(var(--space) * 0.75);
  color: var(--color-text);
}

p {
  margin-bottom: var(--space);
  max-width: 65ch;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  transition: color 0.2s ease;
}

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

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

section {
  margin-bottom: calc(var(--space) * 3);
}

ul, ol {
  margin-left: calc(var(--space) * 1.5);
  margin-bottom: var(--space);
}

li {
  margin-bottom: calc(var(--space) * 0.5);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 1.5) 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

caption {
  text-align: left;
  font-weight: 600;
  padding: var(--space);
  background-color: var(--color-bg);
  border-bottom: 2px solid var(--color-border);
}

th, td {
  text-align: left;
  padding: calc(var(--space) * 0.75);
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-weight: 600;
  position: sticky;
  top: 0;
}

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

tbody tr:hover {
  background-color: rgba(31, 111, 235, 0.05);
}

@media (max-width: 768px) {
  table {
    font-size: 0.9rem;
    overflow-x: auto;
    display: block;
    white-space: nowrap;
  }
  
  th, td {
    padding: calc(var(--space) * 0.5);
  }
}

blockquote {
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-surface);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 1.5) 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  box-shadow: var(--shadow);
}

blockquote p {
  margin-bottom: 0;
  color: var(--color-muted);
}

aside {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 1.5) 0;
  box-shadow: var(--shadow);
}

aside h3 {
  margin-top: 0;
  color: var(--color-secondary);
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--space);
  overflow: hidden;
  transition: all 0.2s ease;
}

details[open] {
  border-color: var(--color-primary);
  background-color: rgba(31, 111, 235, 0.02);
}

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

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

summary::after {
  content: '+';
  position: absolute;
  right: calc(var(--space) * 1.25);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: transform 0.2s ease;
}

details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

summary:hover {
  background-color: rgba(31, 111, 235, 0.05);
}

summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.faq-answer {
  padding: calc(var(--space) * 1.25);
}

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

.faq-group {
  margin-bottom: calc(var(--space) * 2);
}

.faq-group h3 {
  color: var(--color-secondary);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: calc(var(--space) * 0.5);
}

.next-steps-nav ul {
  list-style: none;
  margin-left: 0;
}

.next-steps-nav li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space);
  margin-bottom: calc(var(--space) * 0.75);
  transition: all 0.2s ease;
}

.next-steps-nav li:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}

.appointment-checklist {
  border-left: 4px solid var(--color-secondary);
}

.appointment-checklist ul {
  margin-left: calc(var(--space) * 1.5);
}

@media (min-width: 768px) {
  body {
    font-size: 18px;
  }
  
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  main {
    padding: calc(var(--space) * 3) calc(var(--space) * 2);
  }
  
  .nav-links {
    gap: calc(var(--space) * 2);
  }
}

@media (min-width: 1024px) {
  main {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: calc(var(--space) * 3);
    align-items: start;
  }
  
  article {
    grid-column: 1;
  }
  
  aside {
    grid-column: 2;
    position: sticky;
    top: calc(var(--space) * 2);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: var(--space);
    text-align: center;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}