:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #1c2129;
  --border: #30363d;
  --border-subtle: #21262d;
  --text-primary: #f3f5f7;
  --text-secondary: #c6ced8;
  --text-muted: #9199a3;
  --accent: #3fb950;
  --accent-hover: #56d364;
  --accent-subtle: rgba(63, 185, 80, 0.15);
  --accent-highlight: #3aab4a;
  --accent-glow: rgba(63, 185, 80, 0.22);
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --font-body:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --max-width: 1100px;
  --content-width: 820px;
  --nav-height: 64px;
  --border-radius: 6px;
  --border-radius-lg: 8px;
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f0f0f2;
  --bg-surface: #e8e8ec;
  --bg-elevated: #dcdce0;
  --border: #c8c8cc;
  --border-subtle: #d4d4d8;
  --text-primary: #242436;
  --text-secondary: #454558;
  --text-muted: #68687a;
  --accent: #1a7f37;
  --accent-hover: #1f883d;
  --accent-subtle: rgba(26, 127, 55, 0.12);
  --accent-highlight: #187533;
  --accent-glow: rgba(26, 127, 55, 0.18);
  --link: #2563eb;
  --link-hover: #1d4fd8;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

button,
a {
  font: inherit;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: currentcolor;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color var(--transition-fast);
}

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

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.brand-accent {
  color: var(--accent);
  font-weight: 700;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.nav-brand:hover {
  color: var(--accent);
}

.nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  background: none;
  border: 0;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.nav-link-icon {
  flex: 0 0 auto;
}

.nav-dropdown {
  position: relative;
}

.dropdown-chevron {
  transition: transform var(--transition-fast);
}

.nav-dropdown-trigger[aria-expanded="true"] .dropdown-chevron {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  padding: var(--space-xs) 0;
  list-style: none;
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.nav-dropdown-trigger[aria-expanded="true"] + .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.nav-dropdown-link:hover,
.nav-dropdown-link:focus-visible {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.external-icon {
  opacity: 0.5;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.theme-icon-light {
  display: none;
}

[data-theme="light"] .theme-icon-dark {
  display: none;
}

[data-theme="light"] .theme-icon-light {
  display: block;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  padding: var(--space-sm);
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-secondary);
  border-radius: 1px;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.changelog-main {
  max-width: var(--content-width);
  flex: 1 0 auto;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.page-header {
  margin-bottom: var(--space-2xl);
}

.eyebrow {
  margin-bottom: var(--space-sm);
  color: var(--accent);
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 var(--space-md);
  color: var(--text-primary);
  font-size: var(--font-size-3xl);
  line-height: var(--line-height-tight);
}

.page-intro {
  max-width: 620px;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

.release-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.release {
  --release-summary-inline-padding: var(--space-lg);
  --release-chevron-size: 16px;
  --release-control-gap: var(--space-md);
  --release-permalink-max-width: 64px;

  position: relative;
  scroll-margin-top: calc(var(--nav-height) + var(--space-lg));
  overflow: hidden;
  background-color: var(--bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.release:hover,
.release[open],
.release:target {
  border-color: var(--border);
}

.release:target {
  box-shadow:
    0 0 0 2px var(--accent-highlight),
    0 0 16px var(--accent-glow);
}

.release > summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 58px;
  padding: var(--space-md) var(--release-summary-inline-padding);
  padding-right: calc(
    var(--release-summary-inline-padding) + var(--release-chevron-size) +
      var(--release-control-gap)
  );
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.release > summary::-webkit-details-marker {
  display: none;
}

.release > summary::marker {
  content: "";
}

.release-heading {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-sm);
}

.release-version {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: inherit;
}

.release-latest {
  padding: 2px var(--space-sm);
  color: var(--accent);
  background-color: var(--accent-subtle);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.5;
}

.release-chevron {
  position: absolute;
  top: 50%;
  right: var(--release-summary-inline-padding);
  flex: 0 0 auto;
  color: var(--text-muted);
  transform: translateY(-50%);
  transition: transform var(--transition-normal);
}

.release[open] > summary {
  padding-right: calc(
    var(--release-summary-inline-padding) + var(--release-chevron-size) +
      var(--release-control-gap) + var(--release-permalink-max-width) +
      var(--release-control-gap)
  );
}

.release[open] .release-chevron {
  transform: translateY(-50%) rotate(180deg);
}

.release-permalink-controls {
  display: none;
  position: absolute;
  top: 14px;
  right: calc(
    var(--release-summary-inline-padding) + var(--release-chevron-size) +
      var(--release-control-gap)
  );
  width: var(--release-permalink-max-width);
  align-items: center;
  justify-content: flex-end;
  pointer-events: none;
}

.release[open] .release-permalink-controls {
  display: inline-flex;
}

.copy-link {
  display: inline-flex;
  width: 30px;
  height: 30px;
  padding: 0;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-radius: var(--border-radius);
  cursor: pointer;
  pointer-events: auto;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.copy-link:hover,
.copy-link:focus-visible {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.copy-link.is-copied {
  width: auto;
  min-width: 64px;
  padding: 0 var(--space-xs);
  color: var(--accent);
}

.copy-icon {
  display: inline-flex;
}

.copy-icon svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.copy-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1;
}

.copy-label[hidden],
.copy-icon[hidden] {
  display: none;
}

.release-content {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--text-secondary);
}

.release-content p {
  margin: 0 0 var(--space-md);
}

.release-content h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-tight);
}

.release-content h3:first-child {
  margin-top: 0;
}

.release-content ul {
  margin: 0 0 var(--space-md);
  padding-left: var(--space-lg);
}

.release-content li + li {
  margin-top: var(--space-xs);
}

.release-content hr {
  height: 1px;
  margin: var(--space-lg) 0;
  background: var(--border-subtle);
  border: 0;
}

.release-download {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
}

.copy-status {
  position: fixed;
  right: var(--space-lg);
  bottom: var(--space-lg);
  z-index: 200;
  min-width: 1px;
  color: transparent;
  pointer-events: none;
}

.footer {
  margin-top: auto;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-name {
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text-primary);
}

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.5rem;
    --space-3xl: 48px;
  }

  .container {
    padding-right: var(--space-md);
    padding-left: var(--space-md);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    right: 0;
    left: 0;
    padding: var(--space-md);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
  }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: 0;
    background-color: transparent;
    padding-left: var(--space-md);
  }

  .nav-item-theme {
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-subtle);
  }

  .page-header {
    margin-bottom: var(--space-xl);
  }

  .page-intro {
    font-size: var(--font-size-base);
  }

  .release {
    --release-summary-inline-padding: var(--space-md);
  }

  .release-content {
    padding: 0 var(--space-md) var(--space-md);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    gap: var(--space-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}