:root {
  --color-bg: #E6EDF9;
  --color-panel: #F7FAFF;
  --color-panel-strong: #D8E3F4;
  --color-border: #C3D2E8;
  --color-accent: #1747A6;
  --color-accent-dark: #10367F;
  --color-accent-tint: rgba(23, 71, 166, .09);
  --color-text: #16233C;
  --color-text-muted: #52647F;
  --color-success: #1B8A4C;
  --color-warning: #C07A16;
  --color-error: #C43A3A;
  --color-paper: #FFFFFF;
  --color-pink: #DE8AB4;
  --color-flag-red: #C93B3B;
  --color-flag-blue: #2C4A8F;
  --color-overlay: rgba(16, 54, 127, .34);
  --color-shadow: rgba(16, 54, 127, .17);
  --color-shadow-soft: rgba(22, 35, 60, .09);
  --font-display: Georgia, "Times New Roman", "Noto Sans SC", "Songti SC", "SimSun", serif;
  --font-body: "Inter", "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", monospace;
  --radius-window: 20px;
  --radius-card: 12px;
  --radius-control: 8px;
  --radius-pill: 999px;
  --shadow-window: 0 32px 70px var(--color-shadow), 0 8px 20px var(--color-shadow-soft);
  --shadow-soft: 0 12px 30px rgba(16, 54, 127, .12);
  --shadow-small: 0 3px 12px rgba(16, 54, 127, .06);
  --max-width: 1200px;
  --header-height: 69px;
  --gutter: clamp(16px, 4vw, 28px);
  --section-space: clamp(64px, 9vw, 112px);
  --focus-ring: 2px solid var(--color-accent);
  --transition-fast: 160ms ease;
  --transition-reveal: 620ms cubic-bezier(.2, .72, .25, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

html.nav-open {
  overflow: hidden;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img {
  height: auto;
}

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

button,
summary,
select {
  cursor: pointer;
}

a {
  color: var(--color-accent-dark);
  text-underline-offset: .18em;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible,
[role="tab"]:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
}

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

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(52px, 6vw, 72px);
  line-height: 1.1;
  letter-spacing: -.015em;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.14;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(23px, 2.4vw, 30px);
  line-height: 1.22;
}

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

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

:not(pre) > code {
  padding: .12em .36em;
  overflow-wrap: anywhere;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-panel-strong);
  font-size: .9em;
}

pre {
  max-width: 100%;
  padding: 18px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-text);
  color: var(--color-panel);
  tab-size: 2;
  -webkit-overflow-scrolling: touch;
}

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

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

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

.section-compact {
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-heading > p {
  color: var(--color-text-muted);
  font-size: 18px;
}

.eyebrow {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 0;
  height: 0;
  border-right: 6px solid transparent;
  border-bottom: 9px solid var(--color-warning);
  content: "";
  flex-shrink: 0;
}

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

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

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

.panel,
.card {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
}

.card {
  padding: clamp(20px, 3vw, 30px);
}

.card-elevated {
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
}

.badge,
.fact-pill,
.tag {
  display: inline-flex;
  max-width: 100%;
  min-height: 28px;
  align-items: center;
  gap: 7px;
  padding: 4px 12px;
  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;
  line-height: 1.35;
  text-overflow: ellipsis;
}

.badge-dot::before,
.fact-pill::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  content: "";
  flex-shrink: 0;
}

.fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  min-width: 24px;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-card);
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn-primary:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-accent-dark);
  color: var(--color-paper);
  transform: translateY(-1px);
}

.btn-secondary {
  border-color: var(--color-border);
  background: var(--color-paper);
  color: var(--color-text);
}

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

.btn-quiet {
  border-color: var(--color-accent);
  background: transparent;
  color: var(--color-accent);
}

.btn-quiet:hover {
  background: var(--color-accent);
  color: var(--color-paper);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.icon-box {
  display: inline-grid;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-panel-strong);
  color: var(--color-accent-dark);
}

.icon-box svg {
  width: 24px;
  height: 24px;
}

.reveal {
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

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

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

/* Shared header */
.site-topbar {
  position: sticky;
  z-index: 80;
  top: 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-topbar-inner {
  display: flex;
  max-width: 1264px;
  min-height: var(--header-height);
  align-items: center;
  gap: 24px;
  margin-inline: auto;
  padding: 10px var(--gutter);
}

.brand-link {
  display: inline-flex;
  min-width: max-content;
  min-height: 44px;
  align-items: center;
  gap: 9px;
  color: var(--color-text);
  text-decoration: none;
}

.brand-link:hover {
  color: var(--color-text);
}

.brand-logo {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .03em;
}

.brand-local {
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 500;
}

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

.desktop-nav a,
.more-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 5px;
  padding: 8px 12px;
  border: 0;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.15;
  text-decoration: none;
}

.desktop-nav a:hover,
.more-button:hover {
  background: var(--color-panel-strong);
  color: var(--color-text);
}

.desktop-nav a[aria-current="page"] {
  color: var(--color-accent-dark);
  font-weight: 750;
}

.more-group {
  position: relative;
}

.more-button svg {
  width: 14px;
  height: 14px;
}

.more-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 190px;
  margin: 0;
  padding: 6px;
  visibility: hidden;
  list-style: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(-5px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.more-group:hover .more-menu,
.more-group:focus-within .more-menu,
.more-group.is-open .more-menu {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.more-menu a {
  display: flex;
  width: 100%;
}

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

.language-wrap {
  position: relative;
}

.language-button {
  display: inline-flex;
  min-width: 38px;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 6px 8px;
  border: 0;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 13px;
}

.language-button svg {
  width: 14px;
  height: 14px;
}

.language-menu {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  width: 164px;
  margin: 0;
  padding: 6px;
  visibility: hidden;
  list-style: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(-5px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.language-wrap.is-open .language-menu {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.language-menu a {
  display: flex;
  width: 100%;
  min-height: 40px;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--radius-control);
  color: var(--color-text);
  text-decoration: none;
}

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

.header-login {
  min-height: 40px;
  padding: 8px 20px;
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-panel);
  color: var(--color-text);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

.mobile-veil {
  position: fixed;
  z-index: 70;
  inset: var(--header-height) 0 0;
  display: none;
  border: 0;
  background: var(--color-overlay);
}

.mobile-nav {
  position: fixed;
  z-index: 90;
  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-paper);
  box-shadow: var(--shadow-soft);
}

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

.mobile-nav ul {
  margin: 0;
  padding: 8px var(--gutter) 16px;
  list-style: none;
}

.mobile-nav a {
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-control);
  color: var(--color-text);
  text-decoration: none;
}

.mobile-nav a:hover,
.mobile-nav a[aria-current="page"] {
  background: var(--color-panel-strong);
  color: var(--color-accent-dark);
}

.mobile-nav-label {
  padding: 12px 12px 4px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
}

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

.footer-main {
  display: grid;
  grid-template-columns: minmax(220px, 1.25fr) repeat(3, minmax(150px, 1fr));
  gap: 38px;
  padding-top: 58px;
  padding-bottom: 42px;
}

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

.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

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

.footer-links li + li {
  margin-top: 7px;
}

.footer-links a {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  padding-top: 20px;
  padding-bottom: 24px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 13px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-left: auto;
}

.footer-legal a {
  color: var(--color-text-muted);
  text-decoration: none;
}

@media (max-width: 1020px) {
  .desktop-nav {
    display: none;
  }

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

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

  .language-menu {
    display: none;
  }

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

@media (max-width: 768px) {
  h1 {
    font-size: clamp(32px, 9.5vw, 40px);
    line-height: 1.12;
  }

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

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

  .site-topbar-inner {
    gap: 8px;
  }

  .brand-local,
  .language-button span {
    display: none;
  }

  .header-tools {
    gap: 7px;
  }

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

@media (max-width: 640px) {
  .wrap {
    padding-inline: max(16px, var(--gutter));
  }

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

  .button-row .btn {
    flex: 1 1 140px;
  }

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

  .footer-legal {
    width: 100%;
    margin-left: 0;
  }

  .tilt-card,
  [data-tilt] {
    transform: none;
  }

  .decor,
  .ambient,
  .hero-glow,
  .watermark {
    max-width: 100%;
  }
}

@media (max-width: 390px) {
  .brand-logo {
    width: 34px;
    height: 34px;
  }

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

  .header-login {
    font-size: 13px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0s !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
  }

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