:root {
  --color-primary: #1E3A8A;
  --color-secondary: #0F766E;
  --color-accent: #F97316;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0B1220;
  --color-text-muted: #475569;
  --color-border: #CBD5E1;
  --cb-radius: 14px;
  --cb-shadow: 0 10px 30px rgba(11, 18, 32, 0.10);
  --cb-max: 1120px;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;
  --transition-speed: 0.25s;
}

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

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

body {
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

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

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

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

header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(11, 18, 32, 0.04);
}

header .header-inner {
  max-width: var(--cb-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

header .site-name {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-text);
}

header .site-name a {
  color: var(--color-text);
}

header .site-name a:hover {
  color: var(--color-primary);
}

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

nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

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

nav a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}

main {
  max-width: var(--cb-max);
  margin: 0 auto;
  padding: 2.5rem 1rem;
  width: 100%;
}

footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem 1rem;
  margin-top: 4rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

footer .footer-inner {
  max-width: var(--cb-max);
  margin: 0 auto;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.625rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
  max-width: 72ch;
}

section {
  margin-bottom: 3rem;
}

.breadcrumbs {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

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

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

.breadcrumbs span {
  color: var(--color-border);
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background-color: var(--color-surface);
  font-style: italic;
  color: var(--color-text-muted);
  border-radius: 0 var(--cb-radius) var(--cb-radius) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--color-surface);
  border-radius: var(--cb-radius);
  overflow: hidden;
  box-shadow: var(--cb-shadow);
  font-size: 0.9375rem;
}

table caption {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-size: 1rem;
  letter-spacing: -0.01em;
}

thead {
  background-color: var(--color-background);
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  text-align: left;
  padding: 0.875rem 1rem;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
  letter-spacing: 0.01em;
}

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

tbody tr {
  transition: background-color var(--transition-speed) ease;
}

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

tbody tr:hover {
  background-color: rgba(30, 58, 138, 0.04);
}

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

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

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--cb-radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(11, 18, 32, 0.04);
  transition: box-shadow var(--transition-speed) ease;
}

details:hover {
  box-shadow: var(--cb-shadow);
}

details[open] {
  border-color: var(--color-primary);
  box-shadow: var(--cb-shadow);
}

summary {
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color var(--transition-speed) ease;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

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

summary::before {
  content: "▸";
  color: var(--color-primary);
  font-size: 1.125rem;
  transition: transform var(--transition-speed) ease;
  flex-shrink: 0;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary:hover {
  color: var(--color-primary);
}

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

details .details-content {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
  line-height: 1.6;
}

.faq-list {
  margin-top: 2rem;
}

.cta-section {
  background-color: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--cb-radius);
  padding: 2rem;
  margin: 3rem 0;
  box-shadow: var(--cb-shadow);
}

.cta-section h2 {
  margin-top: 0;
  color: var(--color-primary);
}

ul, ol {
  margin: 1rem 0 1rem 1.5rem;
  line-height: 1.6;
}

li {
  margin-bottom: 0.5rem;
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

em {
  font-style: italic;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-background);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background-color: var(--color-surface);
  padding: 1.25rem;
  border-radius: var(--cb-radius);
  overflow-x: auto;
  border: 1px solid var(--color-border);
  margin: 1.5rem 0;
  line-height: 1.5;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

button, .button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  border: none;
  border-radius: var(--cb-radius);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease;
  text-align: center;
  letter-spacing: 0.01em;
}

button:hover, .button:hover {
  background-color: var(--color-secondary);
  transform: translateY(-1px);
}

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

button:active, .button:active {
  transform: translateY(0);
}

@media (min-width: 768px) {
  header .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  h1 {
    font-size: 2.75rem;
    line-height: 1.1;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  main {
    padding: 3.5rem 2rem;
  }

  table {
    font-size: 1rem;
  }

  thead {
    position: sticky;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.25rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  main {
    padding: 4.5rem 2rem;
  }

  nav ul {
    gap: 2rem;
  }
}

@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;
  }

  html {
    scroll-behavior: auto;
  }

  summary::before {
    transition: none;
  }

  button, .button {
    transition: none;
  }

  a {
    transition: none;
  }

  tbody tr {
    transition: none;
  }

  details {
    transition: none;
  }
}

@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a, a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  thead {
    display: table-header-group;
  }

  tr, img {
    page-break-inside: avoid;
  }

  p, h2, h3 {
    orphans: 3;
    widows: 3;
  }

  h2, h3 {
    page-break-after: avoid;
  }

  header, footer, nav {
    display: none;
  }

  main {
    max-width: 100%;
    padding: 0;
  }
}