:root {
  --color-bg: #2A0E18;
  --color-panel: #38141F;
  --color-panel-raised: #471B29;
  --color-border: #5C2637;
  --color-accent: #FFB020;
  --color-accent-deep: #D98A00;
  --color-text: #FBEFE7;
  --color-text-muted: #CFA6AB;
  --color-success: #45D08C;
  --color-warn: #FF9E57;
  --color-error: #FF6B6B;
  --color-shadow: rgba(0, 0, 0, .38);
  --color-shadow-deep: rgba(0, 0, 0, .48);
  --color-line: rgba(251, 239, 231, .16);
  --color-line-soft: rgba(251, 239, 231, .09);
  --color-accent-glow: rgba(255, 176, 32, .32);
  --color-accent-glow-soft: rgba(255, 176, 32, .12);
  --color-header: rgba(42, 14, 24, .9);
  --color-overlay: rgba(42, 14, 24, .76);
  --color-focus-gap: #2A0E18;
  --color-flag-red: #D3273E;
  --color-flag-red-deep: #B22234;
  --color-flag-blue: #26377A;
  --color-flag-gold: #FFCE00;
  --color-flag-black: #171313;
  --color-flag-white: #F6F1EC;
  --font-display: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius-card: 14px;
  --radius-panel: 22px;
  --radius-pill: 999px;
  --header-height: 64px;
  --content-max: 1180px;
  --content-wide: 1280px;
  --gutter: clamp(16px, 4vw, 32px);
  --section-space: clamp(64px, 9vw, 112px);
  --focus-size: 2px;
  --toc-top: 76px;
  --toc-gap: 16px;
  --transition-fast: 150ms ease;
  --transition-base: 280ms ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  min-width: 320px;
  min-height: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--toc-gap));
}
html.nav-open {
  overflow: hidden;
}
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body:has(.float-cta)::after {
  display: block;
  height: calc(88px + env(safe-area-inset-bottom, 0px));
  content: "";
}
img,
svg,
video,
canvas {
  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;
}
p,
h1,
h2,
h3,
h4,
ul,
ol,
dl,
dd,
blockquote,
figure {
  margin: 0;
}
ul,
ol {
  padding: 0;
}
ul[role="list"],
ol[role="list"],
.site-nav,
.mobile-nav-list,
.footer-links,
.footer-keywords,
.language-list {
  list-style: none;
}
h1,
h2,
h3,
h4 {
  color: var(--color-text);
  font-family: var(--font-display);
  text-wrap: balance;
}
h1 {
  font-size: clamp(52px, 6vw, 72px);
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.12;
}
h2 {
  font-size: clamp(34px, 4.2vw, 52px);
  font-weight: 850;
  letter-spacing: -.01em;
  line-height: 1.16;
}
h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 750;
  line-height: 1.25;
}
p,
li,
dd {
  overflow-wrap: break-word;
}
code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}
code {
  overflow-wrap: anywhere;
  color: var(--color-accent);
}
pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-text);
  -webkit-overflow-scrolling: touch;
}
::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}
:where(a, button, summary, input, select, textarea, [role="tab"]):focus-visible {
  outline: var(--focus-size) solid var(--color-accent);
  outline-offset: 3px;
}
.no-break {
  white-space: nowrap;
}
.wrap,
.wrap-wide {
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap {
  max-width: calc(var(--content-max) + (var(--gutter) * 2));
}
.wrap-wide {
  max-width: calc(var(--content-wide) + (var(--gutter) * 2));
}
.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  overflow-x: clip;
}
.section-compact {
  padding-top: calc(var(--section-space) * .58);
  padding-bottom: calc(var(--section-space) * .58);
  overflow-x: clip;
}
.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}
.section-heading p {
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 18px;
}
.eyebrow {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 4px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-size: 13px;
  letter-spacing: .02em;
}
.eyebrow-dot,
.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
}
.text-muted {
  color: var(--color-text-muted);
}
.text-accent,
.title-accent {
  color: var(--color-accent);
}
.title-accent {
  background: linear-gradient(110deg, var(--color-accent), var(--color-accent-deep));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.btn {
  display: inline-flex;
  min-width: 24px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-primary {
  border-color: var(--color-accent);
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-deep));
  color: var(--color-bg);
  box-shadow: 0 0 24px var(--color-accent-glow), 0 7px 18px var(--color-shadow);
}
.btn-primary:hover {
  box-shadow: 0 0 34px var(--color-accent-glow), 0 9px 22px var(--color-shadow);
}
.btn-secondary {
  border-color: var(--color-border);
  background: var(--color-panel);
  color: var(--color-text);
}
.btn-secondary:hover {
  border-color: var(--color-accent-deep);
  background: var(--color-panel-raised);
}
.btn-ghost {
  border-color: var(--color-accent-deep);
  background: transparent;
  color: var(--color-accent);
}
.btn-small {
  min-height: 38px;
  padding: 8px 18px;
  font-size: 14px;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.panel,
.card {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  box-shadow: 0 18px 40px var(--color-shadow);
}
.panel {
  padding: clamp(22px, 4vw, 40px);
}
.card {
  padding: 24px;
}
.card-raised {
  background: var(--color-panel-raised);
  box-shadow: 0 24px 54px var(--color-shadow-deep);
}
.badge,
.tag {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  max-width: 100%;
  padding: 3px 11px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-raised);
  color: var(--color-text-muted);
  font-size: 12px;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.badge-accent {
  border-color: var(--color-accent-deep);
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 800;
}
.reveal {
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.pending {
  opacity: 0;
  transform: translateY(16px);
}
.reveal.shown {
  opacity: 1;
  transform: translateY(0);
}
.topbar {
  position: relative;
  z-index: 80;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-line-soft);
  background: var(--color-header);
}
.topbar-inner {
  display: flex;
  width: 100%;
  max-width: var(--content-wide);
  height: 100%;
  align-items: center;
  gap: 24px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.site-brand {
  display: flex;
  min-width: max-content;
  align-items: center;
  gap: 10px;
}
.site-brand img {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 14px var(--color-accent-glow);
}
.brand-primary {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
}
.brand-local {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 550;
}
.desktop-nav {
  margin-left: auto;
}
.site-nav {
  display: flex;
  align-items: center;
}
.site-nav li {
  display: flex;
  align-items: center;
}
.site-nav li + li::before {
  padding-inline: 10px;
  color: var(--color-border);
  content: "·";
  font-weight: 800;
}
.site-nav a {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 13px;
  transition: color var(--transition-fast);
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-text);
}
.site-nav a[aria-current="page"] {
  font-weight: 700;
}
.header-tools {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  margin-left: 8px;
}
.language-picker {
  position: relative;
}
.language-trigger {
  display: inline-flex;
  min-width: 24px;
  min-height: 36px;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 13px;
}
.language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  display: none;
  width: 168px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel-raised);
  box-shadow: 0 20px 40px var(--color-shadow-deep);
}
.language-picker.is-open .language-menu {
  display: block;
}
.language-menu a {
  display: flex;
  min-height: 40px;
  align-items: center;
  padding: 7px 10px;
  border-radius: var(--radius-xs);
  color: var(--color-text-muted);
  font-size: 13px;
}
.language-menu a:hover,
.language-menu a[aria-current="true"] {
  background: var(--color-panel);
  color: var(--color-text);
}
.login-button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 6px 19px;
  border: 1px solid var(--color-accent-deep);
  border-radius: var(--radius-pill);
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 700;
}
.login-button:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}
.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
}
.menu-toggle-lines,
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  width: 20px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform var(--transition-fast);
}
.menu-toggle-lines {
  position: relative;
}
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  position: absolute;
  left: 0;
}
.menu-toggle-lines::before {
  top: -6px;
}
.menu-toggle-lines::after {
  top: 6px;
}
.menu-toggle[aria-expanded="true"] .menu-toggle-lines {
  background: transparent;
}
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
  top: 0;
  transform: rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
  top: 0;
  transform: rotate(-45deg);
}
.mobile-nav {
  position: absolute;
  z-index: 82;
  top: var(--header-height);
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
  box-shadow: 0 24px 50px var(--color-shadow-deep);
}
.mobile-nav.is-open {
  display: block;
}
.mobile-nav-list,
.mobile-language-list {
  width: 100%;
  margin: 0;
  padding: 8px var(--gutter);
  list-style: none;
}
.mobile-nav-list a,
.mobile-language-list a {
  display: flex;
  width: 100%;
  min-height: 48px;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-line-soft);
  color: var(--color-text-muted);
}
.mobile-nav-list a[aria-current="page"],
.mobile-language-list a[aria-current="true"] {
  color: var(--color-accent);
  font-weight: 700;
}
.mobile-language-list {
  border-top: 1px solid var(--color-border);
}
.site-footer {
  overflow-x: clip;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 44px;
  padding-top: 64px;
  padding-bottom: 48px;
}
.footer-brand p {
  max-width: 430px;
  margin-top: 16px;
  color: var(--color-text-muted);
}
.footer-title {
  margin-bottom: 14px;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 800;
}
.footer-links,
.footer-keywords,
.footer-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 15px;
}
.footer-links a,
.footer-keywords a,
.footer-languages a {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 13px;
}
.footer-links a:hover,
.footer-keywords a:hover,
.footer-languages a:hover {
  color: var(--color-accent);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 26px;
  border-top: 1px solid var(--color-line-soft);
  color: var(--color-text-muted);
  font-size: 12px;
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 22px;
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid-2 > *,
.grid-3 > *,
.grid-4 > *,
.footer-grid > * {
  min-width: 0;
}
.prose {
  max-width: 820px;
}
.prose > * + * {
  margin-top: 20px;
}
.prose h2 {
  margin-top: 60px;
}
.prose h3 {
  margin-top: 38px;
}
.prose p,
.prose li {
  color: var(--color-text-muted);
}
.prose a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose ul,
.prose ol {
  padding-left: 1.4em;
}
.prose li + li {
  margin-top: 8px;
}
.tilt {
  transform: rotate(-.35deg);
}
@media (max-width: 1120px) {
  .site-nav li + li::before {
    padding-inline: 6px;
  }
  .site-nav a {
    font-size: 12px;
  }
}
@media (max-width: 960px) {
  .desktop-nav,
  .language-picker {
    display: none;
  }
  .header-tools {
    margin-left: auto;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 768px) {
  h1 {
    font-size: clamp(28px, 9.5vw, 40px);
    letter-spacing: -.01em;
    line-height: 1.12;
  }
  h2 {
    font-size: clamp(28px, 8vw, 38px);
  }
  .brand-local {
    display: none;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }
  .topbar-inner {
    gap: 8px;
  }
  .login-button {
    min-height: 36px;
    padding-inline: 14px;
  }
  .site-brand img {
    width: 30px;
    height: 30px;
  }
  .button-row,
  .button-row .btn {
    width: 100%;
  }
  .grid-2,
  .grid-4,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-bottom {
    flex-direction: column;
  }
  .tilt {
    transform: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
  .reveal,
  .reveal.pending {
    opacity: 1;
    transform: none;
  }
}