:root {
  --color-primary: #1E4D8C;
  --color-secondary: #0F7A6C;
  --color-accent: #D1495B;
  --color-bg: #F6F7F9;
  --color-surface: #FFFFFF;
  --color-text: #121826;
  --color-muted: #4B5565;
  --color-border: #D6DAE2;
  --radius: 14px;
  --space: clamp(14px, 1.6vw, 20px);
  --shadow: 0 10px 30px rgba(18, 24, 38, 0.10);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --baseline: 1.6;
}

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

html {
  font-size: 100%;
  line-height: var(--baseline);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space);
}

@media (min-width: 1024px) {
  .container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space);
  }
  .container > * {
    grid-column: 1 / -1;
  }
}

header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--space) * 1.2) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space);
}

@media (min-width: 1024px) {
  header .container {
    display: flex;
  }
}

.site-name {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

header nav {
  display: flex;
  gap: calc(var(--space) * 1.5);
  align-items: center;
}

header nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

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

header nav a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 0 4px rgba(209, 73, 91, 0.2);
  border-radius: 4px;
}

.breadcrumbs {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--space) * 0.75) 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

.breadcrumbs a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(209, 73, 91, 0.2);
  border-radius: 4px;
}

main {
  padding: calc(var(--space) * 2.5) 0;
}

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

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

article {
  background: var(--color-surface);
  padding: calc(var(--space) * 2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--space) * 1.5);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: calc(var(--space) * 1.5);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
  margin-top: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 1.25);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text);
  margin-top: calc(var(--space) * 1.5);
  margin-bottom: var(--space);
  letter-spacing: -0.01em;
}

p {
  margin-bottom: calc(var(--space) * 1.25);
  line-height: var(--baseline);
}

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

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

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

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(209, 73, 91, 0.2);
  border-radius: 4px;
}

ul, ol {
  margin-bottom: calc(var(--space) * 1.25);
  padding-left: calc(var(--space) * 2);
}

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

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

blockquote {
  background: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  font-style: italic;
  color: var(--color-muted);
  border-radius: var(--radius);
}

blockquote p {
  margin-bottom: 0;
}

aside {
  background: #FFF9E6;
  border: 2px solid #F4D03F;
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
}

aside.emergency-note {
  background: #FFE8E8;
  border-color: var(--color-accent);
}

aside strong {
  display: block;
  margin-bottom: calc(var(--space) * 0.5);
  color: var(--color-text);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 2) 0;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 0.95rem;
}

@media (max-width: 767px) {
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

caption {
  font-weight: 600;
  text-align: left;
  padding: calc(var(--space) * 1.25);
  background: var(--color-primary);
  color: var(--color-surface);
  font-size: 1.05rem;
}

thead {
  background: var(--color-bg);
}

@media (min-width: 768px) {
  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

th {
  text-align: left;
  padding: calc(var(--space) * 1);
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: calc(var(--space) * 1);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

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

tbody tr:hover {
  background: #E8F4F8;
}

@media (prefers-reduced-motion: reduce) {
  tbody tr:hover {
    background: var(--color-bg);
  }
}

details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: calc(var(--space) * 1.25);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(18, 24, 38, 0.06);
}

summary {
  padding: calc(var(--space) * 1.25);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  background: var(--color-bg);
  transition: background 0.2s ease;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

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

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

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

details[open] summary::after {
  content: '−';
}

summary:hover {
  background: #E8F4F8;
}

summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
  box-shadow: inset 0 0 0 4px rgba(209, 73, 91, 0.2);
}

.faq-answer {
  padding: calc(var(--space) * 1.5);
  animation: fadeIn 0.3s ease;
}

@media (prefers-reduced-motion: reduce) {
  .faq-answer {
    animation: none;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  @keyframes fadeIn {
    from {
      opacity: 1;
      transform: none;
    }
    to {
      opacity: 1;
      transform: none;
    }
  }
}

.faq-intro, .faq-closing {
  background: var(--color-surface);
  padding: calc(var(--space) * 2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--space) * 2);
}

footer {
  background: var(--color-text);
  color: var(--color-surface);
  padding: calc(var(--space) * 2) 0;
  margin-top: calc(var(--space) * 4);
  text-align: center;
  font-size: 0.9rem;
}

footer p {
  margin: 0;
}

@media (min-width: 768px) {
  article {
    padding: calc(var(--space) * 2.5);
  }
  section {
    margin-bottom: calc(var(--space) * 4);
  }
}

@media (min-width: 1024px) {
  main {
    padding: calc(var(--space) * 3.5) 0;
  }
  h1 {
    margin-bottom: calc(var(--space) * 2);
  }
  h2 {
    margin-top: calc(var(--space) * 2.5);
    margin-bottom: calc(var(--space) * 1.5);
  }
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(209, 73, 91, 0.2);
}

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