:root {
  --color-bg: #E7EBFA;
  --color-bg-top: #EEF2FD;
  --color-bg-bottom: #DEE4F6;
  --color-panel: #F7F9FF;
  --color-panel-alt: #DCE4F7;
  --color-panel-glass: rgba(247, 249, 255, .74);
  --color-border: #C6D0EC;
  --color-border-strong: #A9B6DF;
  --color-accent: #3D4FF0;
  --color-accent-dark: #2A36C4;
  --color-cyan: #1FD1E6;
  --color-cyan-deep: #0E8FA3;
  --color-text: #0F1638;
  --color-text-muted: #4B5478;
  --color-text-soft: #7B85AD;
  --color-deep: #0F1638;
  --color-deep-alt: #1A2350;
  --color-on-dark: #FFFFFF;
  --color-on-dark-muted: rgba(255, 255, 255, .72);
  --color-on-dark-line: rgba(255, 255, 255, .14);
  --color-success: #17A672;
  --color-warning: #E8930C;
  --color-error: #E03B5C;
  --color-accent-tint: rgba(61, 79, 240, .10);
  --color-accent-soft: rgba(61, 79, 240, .05);
  --color-cyan-tint: rgba(31, 209, 230, .14);
  --color-cyan-soft: rgba(31, 209, 230, .08);
  --color-success-tint: rgba(23, 166, 114, .12);
  --color-glow-accent: rgba(61, 79, 240, .18);
  --color-glow-accent-soft: rgba(61, 79, 240, .06);
  --color-glow-cyan: rgba(31, 209, 230, .16);
  --color-glow-cyan-soft: rgba(31, 209, 230, .08);
  --color-highlight: rgba(255, 255, 255, .85);
  --color-flag-ring: rgba(15, 22, 56, .14);
  --color-track: rgba(255, 255, 255, .16);
  --color-focus-shadow: rgba(61, 79, 240, .24);
  --color-shadow-soft: rgba(61, 79, 240, .08);
  --color-shadow-medium: rgba(61, 79, 240, .28);
  --color-shadow-strong: rgba(61, 79, 240, .55);
  --color-ink-shadow: rgba(15, 22, 56, .08);
  --color-flag-red: #D8232A;
  --color-flag-blue: #1F3F9E;
  --color-flag-white: #FFFFFF;
  --color-flag-hk: #DE2910;
  --color-flag-jp: #BC002D;
  --color-flag-sg: #EF3340;
  --color-flag-ca: #D80621;
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, 'Liberation Mono', monospace;
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-cyan) 100%);
  --gradient-text: linear-gradient(90deg, var(--color-accent) 0%, var(--color-cyan) 100%);
  --gradient-page: linear-gradient(180deg, var(--color-bg-top) 0%, var(--color-bg) 55%, var(--color-bg-bottom) 100%);
  --gradient-deep: linear-gradient(135deg, var(--color-deep) 0%, var(--color-deep-alt) 100%);
  --shadow-button: 0 14px 30px -14px var(--color-shadow-strong);
  --shadow-card: 0 22px 48px -20px var(--color-shadow-medium), 0 2px 6px var(--color-shadow-soft);
  --shadow-float: 0 12px 28px -12px var(--color-shadow-medium), 0 1px 3px var(--color-ink-shadow);
  --shadow-panel: inset 0 0 0 1px var(--color-highlight), 0 0 18px 6px var(--color-cyan-tint), 0 30px 60px -28px var(--color-shadow-medium);
  --radius-xs: 5px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --gutter: 32px;
  --content-width: 1312px;
  --announcement-height: 40px;
  --navigation-height: 72px;
  --anchor-offset: 132px;
  --transition-fast: 160ms ease;
  --transition-base: 280ms ease;
}

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

html {
  background: var(--color-bg);
  color: var(--color-text);
  scroll-behavior: smooth;
  scroll-padding-top: var(--anchor-offset);
}

html.nav-open {
  overflow: hidden;
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main,
section,
article,
aside,
header,
footer,
nav,
div {
  min-width: 0;
}

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

img {
  height: auto;
}

svg {
  flex-shrink: 0;
}

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

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

button {
  border: 0;
  cursor: pointer;
}

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

li {
  list-style: none;
}

p,
h1,
h2,
h3,
h4,
blockquote,
figure,
pre {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--color-text);
  text-wrap: balance;
}

h1 {
  font-size: clamp(52px, 5vw, 68px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
}

h2 {
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 850;
  line-height: 1.16;
  letter-spacing: -.02em;
}

h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
  line-height: 1.25;
}

h4 {
  font-size: 18px;
  font-weight: 750;
  line-height: 1.35;
}

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

:not(pre) > code {
  padding: 2px 5px;
  overflow-wrap: anywhere;
  border-radius: var(--radius-xs);
  background: var(--color-panel-alt);
  color: var(--color-accent-dark);
  font-size: .92em;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-deep);
  color: var(--color-on-dark);
  line-height: 1.7;
  -webkit-overflow-scrolling: touch;
}

pre code {
  overflow-wrap: normal;
}

::selection {
  background: var(--color-cyan-tint);
  color: var(--color-text);
}

:where(a, button, input, select, textarea, summary, [role="tab"]):focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px var(--color-focus-shadow);
}

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

.section-space {
  padding-top: 88px;
  padding-bottom: 88px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading p {
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.no-break {
  white-space: nowrap;
}

.gradient-text {
  display: inline-block;
  padding-right: .04em;
  background: var(--gradient-text);
  color: var(--color-accent);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

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

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  max-width: 100%;
  padding: 4px 11px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
}

.badge-dot {
  width: 8px;
  height: 8px;
  margin-right: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: 0 0 0 3px var(--color-cyan-tint);
}

.badge-accent {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
}

.badge-success {
  border-color: var(--color-success);
  background: var(--color-success-tint);
  color: var(--color-success);
}

.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 48px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast), filter var(--transition-fast);
}

.button:hover,
.btn:hover {
  transform: translateY(-1px);
}

.button-primary,
.btn-primary {
  background: var(--gradient-accent);
  color: var(--color-on-dark);
  box-shadow: var(--shadow-button);
}

.button-primary:hover,
.btn-primary:hover {
  filter: brightness(1.05);
}

.button-secondary,
.btn-secondary,
.btn-ghost {
  border-color: var(--color-border-strong);
  background: var(--color-panel);
  color: var(--color-text);
}

.button-secondary:hover,
.btn-secondary:hover,
.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button-dark {
  background: var(--color-deep);
  color: var(--color-on-dark);
}

.button-small {
  min-height: 40px;
  padding-inline: 18px;
  font-size: 14px;
}

.panel,
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.reveal {
  transition: opacity .62s ease, transform .62s ease;
}

.reveal.pending {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.shown {
  opacity: 1;
  transform: translateY(0);
}

.site-announcement {
  height: var(--announcement-height);
  background: var(--color-deep);
  color: var(--color-on-dark-muted);
  font-size: 13px;
}

.site-announcement .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.announcement-copy,
.announcement-meta {
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.announcement-copy {
  gap: 14px;
  overflow: hidden;
}

.announcement-lead {
  color: var(--color-on-dark);
  font-weight: 650;
}

.announcement-link {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  gap: 8px;
  color: var(--color-warning);
  font-weight: 750;
}

.announcement-link svg {
  width: 20px;
  height: 20px;
}

.announcement-meta span {
  padding-inline: 14px;
  border-left: 1px solid var(--color-on-dark-line);
}

.announcement-meta span:first-child {
  border-left: 0;
}

.site-navigation {
  position: relative;
  z-index: 80;
  height: var(--navigation-height);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-glass);
  backdrop-filter: blur(10px);
}

.navigation-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 30px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
  min-height: 44px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 850;
  letter-spacing: -.02em;
}

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

.brand-local {
  color: var(--color-text-muted);
  font-size: .82em;
  font-weight: 650;
}

.desktop-navigation {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 5px;
}

.desktop-navigation > a,
.nav-more-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding-inline: 13px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 650;
}

.desktop-navigation > a:hover,
.nav-more-trigger:hover {
  background: var(--color-accent-soft);
}

.desktop-navigation > a.is-active,
.nav-more.is-active .nav-more-trigger,
.nav-dropdown a.is-active {
  color: var(--color-accent);
}

.nav-more {
  position: relative;
}

.nav-more-trigger svg {
  width: 14px;
  height: 14px;
  margin-left: 6px;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  display: none;
  min-width: 188px;
  padding: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 42px;
  padding-inline: 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 650;
}

.nav-dropdown a:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.nav-more:hover .nav-dropdown,
.nav-more:focus-within .nav-dropdown {
  display: block;
}

.navigation-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switcher {
  position: relative;
}

.language-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 40px;
  gap: 7px;
  padding-inline: 10px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 650;
}

.language-button svg {
  width: 16px;
  height: 16px;
}

.language-button:hover {
  background: var(--color-accent-soft);
  color: var(--color-text);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: none;
  width: 154px;
  padding: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

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

.language-menu a {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 40px;
  padding-inline: 10px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 650;
}

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

.header-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding-inline: 20px;
  border-radius: var(--radius-sm);
  background: var(--color-deep);
  color: var(--color-on-dark);
  font-size: 14px;
  font-weight: 750;
}

.header-login:hover {
  background: var(--color-deep-alt);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text);
}

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

.mobile-navigation {
  position: absolute;
  z-index: 84;
  top: 100%;
  left: 0;
  display: none;
  width: 100%;
  max-height: calc(100dvh - var(--announcement-height) - var(--navigation-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
  -webkit-overflow-scrolling: touch;
}

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

.mobile-navigation-inner {
  padding: 10px var(--gutter) 16px;
}

.mobile-navigation a {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  font-weight: 700;
}

.mobile-navigation a.is-active {
  color: var(--color-accent);
}

.mobile-language-title {
  margin: 16px 12px 4px;
  color: var(--color-text-soft);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .08em;
}

.mobile-language-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mobile-language-links a {
  border-bottom: 0;
  font-size: 13px;
}

.nav-veil {
  position: fixed;
  z-index: 70;
  inset: calc(var(--announcement-height) + var(--navigation-height)) 0 0;
  display: none;
  background: var(--color-focus-shadow);
}

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

.site-footer {
  overflow-x: clip;
  background: var(--color-deep);
  color: var(--color-on-dark-muted);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.1fr .9fr;
  gap: 42px;
  padding-top: 64px;
  padding-bottom: 48px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-on-dark);
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 850;
}

.footer-brand img {
  width: 34px;
  height: 34px;
}

.footer-about {
  max-width: 330px;
  margin-top: 16px;
}

.footer-heading {
  margin-bottom: 16px;
  color: var(--color-on-dark);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .06em;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  width: fit-content;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 20px;
  padding-bottom: 24px;
  border-top: 1px solid var(--color-on-dark-line);
  font-size: 13px;
}

.footer-legal,
.footer-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.footer-legal a,
.footer-languages a {
  min-height: 24px;
}

.prose {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.85;
}

.prose > * + * {
  margin-top: 20px;
}

.prose h2 {
  margin-top: 64px;
  color: var(--color-text);
}

.prose h3 {
  margin-top: 38px;
  color: var(--color-text);
}

.prose ul,
.prose ol {
  padding-left: 22px;
}

.prose li {
  list-style: disc;
  margin-top: 8px;
}

.prose ol li {
  list-style: decimal;
}

.prose a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-cyan);
  text-underline-offset: 3px;
}

#server-status {
  position: relative;
  display: block;
  width: 100%;
  max-width: 100%;
  margin-bottom: 32px;
  overflow: hidden;
}

#server-status + * {
  margin-top: 32px;
}

@media (max-width: 1080px) {
  .desktop-navigation > a,
  .nav-more-trigger {
    padding-inline: 9px;
  }

  .navigation-inner {
    gap: 18px;
  }

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

@media (max-width: 860px) {
  :root {
    --gutter: 22px;
  }

  .desktop-navigation,
  .language-switcher {
    display: none;
  }

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

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

  .announcement-meta {
    display: none;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: clamp(28px, 9vw, 40px);
    line-height: 1.14;
  }

  h2 {
    font-size: clamp(28px, 8vw, 38px);
  }

  .section-space {
    padding-top: 64px;
    padding-bottom: 64px;
  }

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

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --navigation-height: 64px;
  }

  .no-break {
    white-space: normal;
  }

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

  .site-brand {
    font-size: 19px;
  }

  .site-brand img {
    width: 28px;
    height: 28px;
  }

  .announcement-lead {
    display: none;
  }

  .announcement-copy {
    gap: 10px;
    font-size: 12px;
  }

  .header-login {
    padding-inline: 14px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding-top: 48px;
  }

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

  .mobile-language-links {
    grid-template-columns: 1fr;
  }

  .button,
  .btn {
    min-height: 46px;
    padding-inline: 20px;
  }

  .decor,
  .motion-parallax {
    max-width: 100%;
  }
}

@media (max-width: 380px) {
  .language-button {
    display: none;
  }

  .navigation-tools {
    gap: 6px;
  }

  .header-login {
    padding-inline: 12px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0s !important;
  }

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