:root {
  --color-canvas: #FFFFFF;
  --color-panel: #F6F8FA;
  --color-panel-strong: #ECF0F4;
  --color-line: #DFE4EA;
  --color-accent: #1C7ED6;
  --color-accent-dark: #1560A8;
  --color-ink: #0F1B2D;
  --color-muted: #55606E;
  --color-success: #2F9E44;
  --color-warning: #E8A013;
  --color-error: #D6455B;
  --color-flag-red: #D0342C;
  --color-flag-navy: #20356B;
  --color-white: #FFFFFF;
  --color-overlay: rgba(15, 27, 45, 0.42);
  --color-line-soft: rgba(15, 27, 45, 0.1);
  --color-accent-soft: rgba(28, 126, 214, 0.09);
  --color-accent-faint: rgba(28, 126, 214, 0.04);
  --shadow-soft: 0 1px 2px rgba(15, 27, 45, 0.05), 0 10px 28px rgba(15, 27, 45, 0.06);
  --shadow-raised: 0 2px 4px rgba(15, 27, 45, 0.06), 0 20px 50px rgba(15, 27, 45, 0.08);
  --radius-small: 6px;
  --radius-medium: 10px;
  --radius-large: 14px;
  --radius-pill: 999px;
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --content-width: 1320px;
  --reading-width: 780px;
  --header-height: 64px;
  --gutter: 32px;
  --section-space: 112px;
  --focus-ring: 0 0 0 3px rgba(28, 126, 214, 0.22);
  --transition-fast: 160ms ease;
  --transition-base: 280ms ease;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  background: var(--color-canvas);
}

html.nav-open {
  overflow: hidden;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img {
  height: auto;
}

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

button {
  border: 0;
  cursor: pointer;
}

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

p,
h1,
h2,
h3,
h4,
ul,
ol,
blockquote,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  line-height: 1.16;
  text-wrap: balance;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(52px, 5vw, 72px);
  font-weight: 900;
  letter-spacing: -0.015em;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 900;
  letter-spacing: -0.012em;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
}

h4 {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 800;
}

p {
  margin-bottom: 1.15em;
}

ul,
ol {
  padding-left: 1.35em;
}

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

:not(pre) > code {
  padding: 0.12em 0.38em;
  overflow-wrap: anywhere;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  font-size: 0.9em;
}

pre {
  max-width: 100%;
  margin: 24px 0;
  padding: 20px;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-ink);
  color: var(--color-white);
  font-family: var(--font-mono);
  line-height: 1.65;
  -webkit-overflow-scrolling: touch;
}

pre code {
  white-space: pre;
}

::selection {
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

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

@media (max-width: 640px) {
  .no-break {
    white-space: normal;
  }

  .ticker-track {
    flex-wrap: wrap;
    width: auto;
    transform: none !important;
  }

  .ticker-group {
    flex-wrap: wrap;
    white-space: normal;
  }
}

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

.reading {
  width: 100%;
  max-width: var(--reading-width);
  margin-inline: auto;
}

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

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

.panel-section {
  overflow-x: clip;
  border-block: 1px solid var(--color-line);
  background: var(--color-panel);
}

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

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

.kicker {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 5px 13px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-accent);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.kicker-dot,
.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-success);
}

.section-kicker {
  display: block;
  margin-bottom: 14px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: lowercase;
}

.lead {
  max-width: 760px;
  color: var(--color-muted);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.72;
}

.btn {
  display: inline-flex;
  min-width: 24px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-medium);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn-primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-accent-dark);
}

.btn-secondary {
  border-color: var(--color-line);
  background: var(--color-canvas);
  color: var(--color-ink);
}

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

.btn-subtle {
  border-color: var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.btn[aria-disabled="true"],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

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

.card {
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  box-shadow: var(--shadow-soft);
}

.card-pad {
  padding: 28px;
}

.badge,
.tag,
.chip {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  max-width: 100%;
  padding: 4px 10px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

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

.site-header {
  position: relative;
  z-index: 40;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.header-inner {
  position: relative;
  display: flex;
  height: var(--header-height);
  align-items: center;
  gap: 26px;
}

.site-brand {
  display: inline-flex;
  min-width: max-content;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.site-brand img {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 850;
  letter-spacing: -0.01em;
}

.brand-local {
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 600;
}

.desktop-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.nav-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 6px;
  padding: 7px 9px;
  border-radius: var(--radius-small);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.2;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  background: var(--color-panel);
  color: var(--color-ink);
}

.nav-link.is-active {
  color: var(--color-accent);
}

.nav-link svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.login-button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
  font-size: 13px;
  font-weight: 750;
}

.login-button:hover {
  background: var(--color-accent-dark);
}

.language-picker {
  position: relative;
}

.language-button {
  display: inline-flex;
  min-width: 44px;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 9px;
  border-radius: var(--radius-small);
  background: var(--color-canvas);
  color: var(--color-muted);
  font-size: 12px;
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: none;
  width: 164px;
  padding: 7px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  box-shadow: var(--shadow-raised);
}

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

.language-menu a {
  display: flex;
  min-height: 40px;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--radius-small);
  color: var(--color-muted);
  font-size: 13px;
}

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

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

.menu-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.mobile-nav {
  position: absolute;
  top: var(--header-height);
  right: var(--gutter);
  left: var(--gutter);
  z-index: 44;
  display: none;
  max-height: calc(100dvh - var(--header-height) - 16px);
  padding: 10px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  box-shadow: var(--shadow-raised);
}

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

.mobile-nav a {
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-small);
  color: var(--color-muted);
  font-weight: 650;
}

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

.mobile-nav svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mobile-language {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-line);
}

.nav-veil {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 35;
  display: none;
  background: var(--color-overlay);
}

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

.site-footer {
  overflow-x: clip;
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(250px, 1.2fr) repeat(3, minmax(160px, 1fr));
  gap: 48px;
  padding-top: 64px;
  padding-bottom: 48px;
}

.footer-brand {
  min-width: 0;
}

.footer-brand .site-brand {
  margin-bottom: 16px;
}

.footer-brand p {
  max-width: 340px;
  color: var(--color-muted);
  font-size: 14px;
}

.footer-title {
  margin-bottom: 15px;
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 7px;
}

.footer-links a {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  width: fit-content;
  color: var(--color-muted);
  font-size: 13px;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  padding-bottom: 28px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 12px;
}

.footer-legal,
.footer-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.reveal {
  transition: opacity 520ms ease, transform 520ms ease;
}

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

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

.prose {
  color: var(--color-ink);
}

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

.prose h2 {
  margin-top: 2.2em;
}

.prose h3 {
  margin-top: 1.8em;
}

.prose p,
.prose li {
  color: var(--color-muted);
}

.prose a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prose img {
  border-radius: var(--radius-medium);
}

.ticker {
  max-width: 100%;
  overflow: hidden;
  border-block: 1px solid var(--color-line);
  background: var(--color-panel);
}

.ticker-track {
  display: flex;
  width: max-content;
  align-items: center;
  will-change: transform;
}

.ticker-group {
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 16px 17px;
  flex: 0 0 auto;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  white-space: nowrap;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.ticker-item::before {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

@media (max-width: 1180px) {
  .desktop-nav .nav-link span {
    display: none;
  }

  .desktop-nav .nav-link {
    padding-inline: 8px;
  }
}

@media (max-width: 860px) {
  :root {
    --gutter: 20px;
    --section-space: 84px;
  }

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

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

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

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

@media (max-width: 768px) {
  h1 {
    font-size: clamp(32px, 9vw, 40px);
    line-height: 1.13;
    letter-spacing: -0.012em;
  }

  h2 {
    font-size: clamp(28px, 7vw, 38px);
  }

  .lead {
    font-size: 17px;
  }

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

  .button-row .btn {
    flex: 1 1 180px;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --section-space: 68px;
  }

  .wrap {
    padding-inline: var(--gutter);
  }

  .brand-word {
    font-size: 17px;
  }

  .brand-local {
    display: none;
  }

  .login-button {
    min-width: 58px;
    padding-inline: 12px;
  }

  .mobile-nav {
    right: var(--gutter);
    left: var(--gutter);
  }

  .ticker-track {
    flex-wrap: wrap;
    width: 100%;
    transform: none !important;
  }

  .ticker-group {
    width: 100%;
    min-width: 0;
    flex: 1 1 100%;
    flex-wrap: wrap;
    white-space: normal;
  }

  .ticker-group + .ticker-group {
    display: none;
  }

  .card-pad {
    padding: 21px;
  }

  .footer-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

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

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

@media (max-width: 380px) {
  .header-inner {
    gap: 8px;
  }

  .site-brand {
    gap: 7px;
  }

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

  .header-tools {
    gap: 6px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
  }

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

  .ticker-track {
    flex-wrap: wrap;
    width: auto;
    transform: none !important;
  }

  .ticker-group {
    flex-wrap: wrap;
    white-space: normal;
  }
}