:root {
  --color-page: #FFFFFF;
  --color-panel: #F6F6F8;
  --color-panel-strong: #EEEEF1;
  --color-line: #E4E4E9;
  --color-line-strong: #2B2B30;
  --color-brand: #9B3D6E;
  --color-brand-dark: #7A2C56;
  --color-brand-soft: rgba(155, 61, 110, .10);
  --color-mist: #9FCBD8;
  --color-ink: #2B2B30;
  --color-muted: #77777F;
  --color-inverse: #FFFFFF;
  --color-sketch: #DADADF;
  --color-success: #2E9E5B;
  --color-warning: #D0942A;
  --color-error: #D64545;
  --color-window-side: #2C2C31;
  --color-window-side-text: #B7B7C0;
  --color-window-side-hover: rgba(255, 255, 255, .07);
  --color-dot-red: #FF5F57;
  --color-dot-yellow: #FEBC2E;
  --color-dot-green: #28C840;
  --color-switch-off: #D6D6DC;
  --color-veil: rgba(43, 43, 48, .28);
  --shadow-window: 0 24px 60px rgba(20, 20, 30, .12);
  --shadow-card: 0 14px 40px rgba(20, 20, 30, .08);
  --shadow-card-hover: 0 20px 48px rgba(20, 20, 30, .11);
  --shadow-row: 0 2px 8px rgba(20, 20, 30, .06);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --font-display: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
  --content-width: 1100px;
  --header-width: 1280px;
  --reading-width: 780px;
  --gutter: 24px;
  --header-height: 72px;
  --section-space: 112px;
  --ease-standard: cubic-bezier(.22, 1, .36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  min-width: 0;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

html.nav-open {
  overflow: hidden;
}

body {
  margin: 0;
  padding: 0;
  overflow-x: clip;
  background: var(--color-page);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main,
section,
footer,
.hero,
.decorated-section {
  position: relative;
  overflow-x: clip;
}

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

img {
  height: auto;
}

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

button {
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

nav ul,
.clean-list {
  list-style: none;
}

p,
figure,
blockquote,
pre {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  line-height: 1.18;
  text-wrap: balance;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(34px, 3.4vw, 48px);
  font-weight: 800;
  letter-spacing: -.015em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -.015em;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 750;
}

h4 {
  margin-bottom: 10px;
  font-size: 17px;
  font-weight: 700;
}

.keyword-lock {
  white-space: nowrap;
}

strong {
  color: var(--color-ink);
  font-weight: 700;
}

small {
  color: var(--color-muted);
}

code,
kbd,
samp {
  font-family: var(--font-mono);
}

:not(pre) > code {
  padding: .16em .42em;
  border-radius: var(--radius-sm);
  background: var(--color-panel-strong);
  color: var(--color-brand-dark);
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--color-window-side);
  color: var(--color-inverse);
  font: 13px/1.8 var(--font-mono);
  -webkit-overflow-scrolling: touch;
}

pre code {
  color: inherit;
  white-space: pre;
}

table {
  border-collapse: collapse;
}

.wrap {
  width: 100%;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header-wrap {
  width: 100%;
  max-width: min(100%, calc(var(--header-width) + var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.section-tight {
  padding-top: 72px;
  padding-bottom: 72px;
}

.section-heading {
  max-width: 700px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--color-muted);
  font-size: 17px;
}

.muted {
  color: var(--color-muted);
}

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

.mono {
  font-family: var(--font-mono);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 600;
}

.eyebrow-dot,
.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-brand);
}

.panel,
.card {
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  color: var(--color-ink);
}

.panel-raised,
.card-raised {
  border-radius: var(--radius-xl);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.button svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--color-brand);
  color: var(--color-inverse);
}

.button-primary:hover {
  background: var(--color-brand-dark);
  color: var(--color-inverse);
}

.button-secondary {
  border-color: var(--color-line-strong);
  background: var(--color-page);
  color: var(--color-ink);
}

.button-secondary:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-dark);
}

.button-soft {
  background: var(--color-panel-strong);
  color: var(--color-ink);
}

.button-soft:hover {
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
}

.button[aria-disabled="true"],
.button:disabled {
  cursor: not-allowed;
  opacity: .56;
  transform: none;
}

.badge-row,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.badge,
.chip {
  display: inline-flex;
  max-width: 100%;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  overflow: hidden;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.35;
}

.chip:hover {
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
}

.site-header {
  position: relative;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-page);
  color: var(--color-ink);
}

.site-header__inner {
  display: flex;
  height: 100%;
  align-items: center;
}

.site-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
}

.site-brand img {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
}

.desktop-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.desktop-nav__list {
  display: flex;
  align-items: center;
  list-style: none;
}

.desktop-nav__list li {
  display: flex;
  align-items: center;
}

.desktop-nav__list li + li::before {
  content: "·";
  margin-inline: 12px;
  color: var(--color-sketch);
  font-weight: 800;
}

.desktop-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--color-ink);
  font-size: 14px;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
  color: var(--color-brand-dark);
}

.desktop-nav a.is-active {
  font-weight: 700;
}

.header-tools {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  margin-left: 26px;
}

.language-picker {
  position: relative;
}

.language-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  cursor: pointer;
  font-size: 13px;
}

.language-button:hover,
.language-button[aria-expanded="true"] {
  background: var(--color-panel-strong);
  color: var(--color-ink);
}

.language-short {
  display: none;
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 152px;
  z-index: 4;
  display: none;
  padding: 7px;
  border-radius: var(--radius-md);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
  list-style: none;
}

.language-picker.is-open .language-menu {
  display: block;
}

.language-menu a {
  display: flex;
  min-height: 40px;
  align-items: center;
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}

.language-menu a:hover,
.language-menu a[aria-current="true"] {
  background: var(--color-panel);
  color: var(--color-brand-dark);
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-ink);
  cursor: pointer;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 auto;
  z-index: 102;
  display: none;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px var(--gutter) 22px;
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
}

.mobile-nav a {
  display: flex;
  width: 100%;
  min-height: 48px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-weight: 650;
}

.mobile-nav a:hover,
.mobile-nav a.is-active {
  background: var(--color-panel);
  color: var(--color-brand-dark);
}

.mobile-nav__languages {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-line);
}

.mobile-nav__languages a {
  color: var(--color-muted);
  font-weight: 500;
}

.menu-veil {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 90;
  display: none;
  background: var(--color-veil);
}

.menu-veil.is-open {
  display: block;
}

.site-footer {
  margin-top: 80px;
  padding-top: 68px;
  padding-bottom: 28px;
  background: var(--color-panel);
  color: var(--color-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(250px, 1.2fr) minmax(150px, .7fr) minmax(280px, 1.3fr) minmax(170px, .8fr);
  gap: 42px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 15px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
}

.footer-intro {
  max-width: 32em;
  margin: 0;
  color: var(--color-muted);
}

.footer-title {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 750;
}

.footer-links {
  list-style: none;
}

.footer-links a {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  color: var(--color-muted);
  font-size: 13.5px;
}

.footer-links a:hover {
  color: var(--color-brand-dark);
}

.footer-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-keywords a {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-muted);
  font-size: 12px;
}

.footer-keywords a:hover {
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 50px;
  padding-top: 22px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 12.5px;
}

.footer-bottom a:hover {
  color: var(--color-brand-dark);
}

.prose {
  color: var(--color-ink);
  font-size: 16px;
}

.prose > * {
  max-width: 100%;
}

.prose p,
.prose li {
  overflow-wrap: break-word;
}

.prose p {
  margin-bottom: 1.25em;
}

.prose h2 {
  margin-top: 2.5em;
}

.prose h3 {
  margin-top: 2em;
}

.prose a:not([class*="button"]) {
  color: var(--color-brand-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-mist);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.prose ul,
.prose ol {
  margin: 1em 0 1.4em;
  padding-left: 1.4em;
}

.prose li + li {
  margin-top: .5em;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 620px;
  background: var(--color-page);
  color: var(--color-ink);
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--color-panel);
  color: var(--color-ink);
  font-weight: 750;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease-standard), transform .7s var(--ease-standard);
}

.reveal.shown {
  opacity: 1;
  transform: none;
}

.tilt,
.tilt-soft {
  transform: rotate(-.35deg);
}

@media (max-width: 1080px) {
  .desktop-nav__list li + li::before {
    margin-inline: 8px;
  }

  .desktop-nav a {
    font-size: 13px;
  }

  .header-tools {
    margin-left: 16px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
    --section-space: 84px;
  }

  .desktop-nav,
  .language-picker {
    display: none;
  }

  .header-tools {
    margin-left: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .footer-grid {
    gap: 34px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: clamp(24px, 7.6vw, 30px);
    line-height: 1.2;
  }

  h2 {
    font-size: clamp(25px, 7vw, 31px);
  }

  .section-heading p {
    font-size: 15px;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 18px;
    --section-space: 72px;
  }

  body {
    font-size: 14px;
  }

  .wrap,
  .reading-wrap,
  .header-wrap {
    width: 100%;
    padding-inline: var(--gutter);
  }

  .site-brand span {
    font-size: 15px;
  }

  .site-brand img {
    width: 30px;
    height: 30px;
  }

  .button-row {
    align-items: stretch;
  }

  .button-row .button {
    flex: 1 1 145px;
  }

  .badge-row,
  .chip-row {
    flex-direction: row;
    justify-content: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .tilt,
  .tilt-soft,
  [class*="tilt"] {
    transform: none;
  }

  pre {
    padding: 16px;
    font-size: 12px;
  }
}

@media (max-width: 360px) {
  :root {
    --gutter: 16px;
  }

  .site-brand span {
    max-width: 126px;
    line-height: 1.15;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}