:root {
  --bg: #f6f3fd;
  --surface: #ffffff;
  --text: #1a1433;
  --muted: #5d5575;
  --line: #1a1433;
  --header-bg: #4c1d95;
  --header-text: #ffffff;
  --link: #6d28d9;
  --accent: #e8fe53;
  --shadow: #1a1433;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #120a26;
    --surface: #1e1439;
    --text: #f1edfb;
    --muted: #b3a9cc;
    --line: #3d2d6b;
    --header-bg: #2a1263;
    --header-text: #ffffff;
    --link: #c4b5fd;
    --accent: #e8fe53;
    --shadow: #000000;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  text-wrap: pretty;
}

a {
  color: var(--link);
  text-underline-offset: 2px;
  overflow-wrap: anywhere;
}

.header {
  background: var(--header-bg);
  color: var(--header-text);
}

.header-inner,
.page,
.footer {
  max-width: 720px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
}

.brand {
  color: inherit;
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  flex-shrink: 0;
}

.lang-menu {
  position: relative;
  flex: none;
}

.lang-menu summary {
  display: block;
  list-style: none;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  border-radius: 10px;
}

.lang-menu summary::-webkit-details-marker {
  display: none;
}

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

.lang-menu-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 10px 0 12px;
  background: var(--accent);
  color: #1a1433;
  border: 2px solid #1a1433;
  border-radius: 10px;
  box-shadow: 3px 3px 0 #1a1433;
  font-size: 15px;
  font-weight: 800;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.lang-menu summary:active .lang-menu-trigger,
.lang-menu[open] .lang-menu-trigger {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 #1a1433;
}

.lang-menu svg {
  flex: none;
}

.lang-menu-chevron {
  transition: transform 0.2s ease;
}

.lang-menu[open] .lang-menu-chevron {
  transform: rotate(180deg);
}

.lang-menu-list {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 20;
  width: 208px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--line);
  border-radius: 14px;
  box-shadow: 5px 5px 0 var(--shadow);
  animation: lang-menu-in 0.16s ease-out;
}

.lang-menu-list li + li {
  margin-top: 2px;
}

.lang-menu-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 0 12px;
  border: 2px solid transparent;
  border-radius: 9px;
  color: inherit;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.15s ease;
}

.lang-menu-list a:hover {
  background: var(--bg);
}

.lang-menu-list a:focus-visible {
  outline: none;
  border-color: var(--link);
}

.lang-menu-list a[aria-current="page"] {
  background: var(--accent);
  color: #1a1433;
  border-color: #1a1433;
  font-weight: 800;
}

.lang-menu-code {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

@keyframes lang-menu-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .lang-menu-trigger,
  .lang-menu-chevron,
  .lang-menu-list {
    transition: none;
    animation: none;
  }
}

.page {
  padding-top: 32px;
  padding-bottom: 48px;
}

h1 {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 8px;
  text-wrap: balance;
}

h2 {
  font-size: 21px;
  line-height: 1.3;
  margin: 36px 0 8px;
}

h3 {
  font-size: 18px;
  line-height: 1.35;
  margin: 24px 0 4px;
}

p,
ul {
  margin: 8px 0;
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 4px;
}

.meta {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 24px;
}

.card {
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: 14px;
  box-shadow: 4px 4px 0 var(--shadow);
  padding: 4px 20px 12px;
  margin: 24px 0 8px;
}

.card h2 {
  margin-top: 16px;
}

.card ul {
  list-style: none;
  padding-left: 0;
}

.card li {
  position: relative;
  padding-left: 28px;
}

.card li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.45em;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--accent);
  border: 2px solid var(--line);
}

.links {
  list-style: none;
  padding-left: 0;
}

.footer {
  color: var(--muted);
  font-size: 14px;
  padding-top: 16px;
  padding-bottom: 32px;
  border-top: 1px solid var(--line);
}

.footer a {
  color: inherit;
}