:root {
  --color-primary: #1E3A5F;
  --color-secondary: #6B2D5C;
  --color-accent: #C98B2B;
  --color-background: #F6F2EA;
  --color-surface: #FFFFFF;
  --color-text: #1A1D21;
  --color-text-muted: #4B5563;
  --color-border: #D7D0C6;
  --radius: 0.25rem;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --measure: 70ch;
}

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

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 100%;
  min-height: 100vh;
}

header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-name {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-name:hover {
  color: var(--color-secondary);
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

nav a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

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

.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 3px;
}

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

.breadcrumbs span {
  margin: 0 0.5rem;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.2;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

section {
  background-color: var(--color-surface);
  padding: 2rem;
  margin-bottom: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

p {
  max-width: var(--measure);
  margin-bottom: 1rem;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

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

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

blockquote {
  max-width: var(--measure);
  margin: 2rem 0;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  background-color: var(--color-background);
  border-left: 4px solid var(--color-accent);
  font-style: italic;
  color: var(--color-text);
  border-radius: var(--radius);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

caption {
  font-weight: 700;
  font-size: 1.1rem;
  text-align: left;
  padding: 1rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
}

thead {
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-weight: 600;
}

th {
  padding: 1rem;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

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

tbody tr:hover {
  background-color: rgba(30, 58, 95, 0.05);
  transition: background-color 0.2s ease;
}

.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

details {
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  overflow: hidden;
}

summary {
  padding: 1rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  background-color: var(--color-background);
  color: var(--color-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
}

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

summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 700;
  transition: transform 0.3s ease;
}

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

summary:hover {
  background-color: rgba(30, 58, 95, 0.08);
}

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

details div {
  padding: 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

details[open] div {
  max-height: 5000px;
  padding: 1.5rem;
}

@media (prefers-reduced-motion: reduce) {
  details div {
    transition: none;
  }
  
  summary::after {
    transition: none;
  }
}

ul:not(nav ul) {
  max-width: var(--measure);
  margin: 1rem 0 1rem 1.5rem;
  list-style-position: outside;
}

ol {
  max-width: var(--measure);
  margin: 1rem 0 1rem 1.5rem;
  list-style-position: outside;
}

li {
  margin-bottom: 0.5rem;
}

footer {
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-primary);
  margin-top: auto;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

footer p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

footer nav ul {
  gap: 1rem;
}

footer a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 0.25rem 0.5rem;
}

footer a:hover {
  color: var(--color-primary);
}

@media (max-width: 767px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    width: 100%;
  }
  
  nav a {
    width: 100%;
  }
  
  section {
    padding: 1.5rem 1rem;
  }
  
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
  
  table {
    font-size: 0.85rem;
  }
  
  th, td {
    padding: 0.625rem;
  }
}

@media (min-width: 768px) {
  main {
    padding: 3rem 2rem;
  }
  
  section {
    padding: 2.5rem;
  }
}

@media (min-width: 1024px) {
  main {
    padding: 4rem 2rem;
  }
  
  section {
    padding: 3rem;
  }
  
  .header-inner {
    padding: 2rem;
  }
  
  .footer-inner {
    padding: 2.5rem 2rem;
  }
}

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

@media print {
  body {
    background-color: white;
    color: black;
  }
  
  header, footer, nav {
    display: none;
  }
  
  main {
    max-width: 100%;
    padding: 0;
  }
  
  section {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
  
  a {
    text-decoration: underline;
    color: black;
  }
  
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
  
  details[open] div {
    max-height: none;
  }
}

.faq-question {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.faq-question:first-of-type {
  margin-top: 1rem;
  padding-top: 0;
  border-top: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

strong, b {
  font-weight: 700;
  color: var(--color-text);
}

em, i {
  font-style: italic;
}

code {
  font-family: "Courier New", Courier, monospace;
  background-color: var(--color-background);
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
  font-size: 0.9em;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}