:root {
  --color-bg: #FEFEFA;
  --color-panel: #FFFFFF;
  --color-panel-soft: #F3F7F1;
  --color-border: #E3E9E1;
  --color-accent: #5FCB63;
  --color-accent-dark: #237B3D;
  --color-accent-soft: #DFF5E0;
  --color-text: #14261F;
  --color-muted: #5B6B63;
  --color-success: #2E9E4F;
  --color-warning: #D9A21B;
  --color-error: #D9484A;
  --color-lavender: #E7D9FF;
  --color-butter: #FFE7B0;
  --color-sky: #CFE6FF;
  --color-mint: #D2F5C9;
  --color-grid: rgba(20, 38, 31, 0.045);
  --color-wash: rgba(95, 203, 99, 0.07);
  --color-accent-shadow: rgba(95, 203, 99, 0.12);
  --color-accent-shadow-strong: rgba(95, 203, 99, 0.24);
  --color-ink-shadow: rgba(20, 38, 31, 0.05);
  --color-highlight: rgba(255, 255, 255, 0.9);
  --color-overlay: rgba(20, 38, 31, 0.42);
  --color-flag-white: #FFFFFF;
  --color-flag-red: #D8232A;
  --color-flag-blue: #1E4BA8;
  --color-flag-navy: #1B2F6E;
  --color-flag-black: #1B1B1B;
  --color-flag-gold: #F2C300;
  --color-flag-green: #1F8A47;
  --font-display: "Inter", "Noto Sans SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius-panel: 24px;
  --radius-card: 20px;
  --radius-control: 14px;
  --radius-small: 10px;
  --radius-pill: 999px;
  --shadow-panel: 0 14px 30px -14px var(--color-accent-shadow), 0 1px 2px var(--color-ink-shadow);
  --shadow-panel-hover: 0 22px 40px -14px var(--color-accent-shadow-strong), 0 2px 4px var(--color-ink-shadow);
  --shadow-control: 0 18px 36px -14px var(--color-accent-shadow-strong), 0 1px 2px var(--color-ink-shadow), inset 0 0 0 1px var(--color-highlight);
  --site-width: 1360px;
  --content-width: 1160px;
  --prose-width: 780px;
  --gutter: clamp(16px, 3vw, 32px);
  --header-height: 72px;
  --section-space: clamp(64px, 9vw, 112px);
  --focus-ring: 2px solid var(--color-accent-dark);
  --transition-fast: 160ms ease;
  --transition-smooth: 260ms ease;
}

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

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

html,
body {
  margin: 0;
  padding: 0;
  max-width: 100%;
}

html.nav-open,
html.nav-open body {
  overflow: hidden;
}

body {
  min-width: 320px;
  overflow-x: clip;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: absolute;
  z-index: -1;
  inset: 0 0 auto;
  height: 760px;
  background: linear-gradient(180deg, var(--color-wash), transparent);
  content: "";
  pointer-events: none;
}

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

img {
  height: auto;
}

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

button,
summary,
[role="tab"] {
  cursor: pointer;
}

button {
  border: 0;
}

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

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

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

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

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

h1,
h2,
h3,
h4,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  font-size: clamp(52px, 6vw, 72px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h2 {
  margin: 0 0 24px;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 850;
  letter-spacing: -0.02em;
  line-height: 1.16;
}

h3 {
  margin: 0 0 12px;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

p {
  margin: 0 0 1em;
}

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

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

code {
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-panel-soft);
  -webkit-overflow-scrolling: touch;
}

pre code {
  overflow-wrap: normal;
  white-space: pre;
}

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

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

.prose {
  width: 100%;
  max-width: var(--prose-width);
  min-width: 0;
}

.prose h2 {
  margin-top: 2em;
}

.prose h3 {
  margin-top: 1.6em;
}

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

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

.section--compact {
  padding-top: 56px;
  padding-bottom: 56px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lead {
  color: var(--color-muted);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.65;
}

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

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

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

.panel {
  border-radius: var(--radius-panel);
}

.card {
  border-radius: var(--radius-card);
}

.surface-soft {
  background: var(--color-panel-soft);
}

.stack {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.cluster > svg,
.cluster > .dot,
.cluster > .icon {
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  min-width: 24px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  transition: transform var(--transition-fast), background 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-text);
  box-shadow: 0 12px 26px -12px var(--color-accent-shadow-strong);
}

.btn-primary:hover {
  color: var(--color-text);
  background: var(--color-accent-soft);
}

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

.btn-secondary:hover {
  color: var(--color-text);
  background: var(--color-panel-soft);
}

.btn-quiet {
  border-color: var(--color-border);
  background: var(--color-panel-soft);
  color: var(--color-accent-dark);
}

.btn[aria-disabled="true"],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
}

.badge,
.tag,
.chip {
  display: inline-flex;
  max-width: 100%;
  min-height: 28px;
  align-items: center;
  gap: 8px;
  padding: 4px 11px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: 700;
}

.badge__dot,
.status-dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.tag--lavender {
  border-color: var(--color-lavender);
  background: var(--color-lavender);
  color: var(--color-text);
}

.tag--butter {
  border-color: var(--color-butter);
  background: var(--color-butter);
  color: var(--color-text);
}

.tag--sky {
  border-color: var(--color-sky);
  background: var(--color-sky);
  color: var(--color-text);
}

.tag--mint {
  border-color: var(--color-mint);
  background: var(--color-mint);
  color: var(--color-text);
}

.reveal {
  transition: opacity 620ms ease, transform 620ms ease;
}

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

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

.site-header {
  position: relative;
  z-index: 50;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.site-header__bar {
  display: flex;
  width: 100%;
  max-width: var(--site-width);
  min-height: var(--header-height);
  align-items: center;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

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

.site-brand__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.site-brand__local {
  color: var(--color-muted);
  font-size: 15px;
  font-weight: 550;
}

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

.desktop-nav__list {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

.desktop-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 600;
}

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

.desktop-nav a[aria-current="page"] {
  border-bottom-color: var(--color-accent);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 18px;
}

.header-login {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 8px 19px;
  border: 1px solid var(--color-text);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  font-size: 14px;
  font-weight: 750;
}

.header-login:hover {
  color: var(--color-text);
  background: var(--color-panel-soft);
}

.language-picker {
  position: relative;
}

.language-picker__button,
.menu-toggle {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-muted);
}

.language-picker__button:hover,
.menu-toggle:hover {
  background: var(--color-panel-soft);
}

.language-picker__menu {
  position: absolute;
  z-index: 65;
  top: calc(100% + 8px);
  right: 0;
  width: 168px;
  margin: 0;
  padding: 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  list-style: none;
}

.language-picker__menu[hidden] {
  display: none;
}

.language-picker__menu a {
  display: flex;
  width: 100%;
  min-height: 42px;
  align-items: center;
  padding: 8px 11px;
  border-radius: var(--radius-small);
  font-size: 14px;
}

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

.menu-toggle {
  display: none;
}

.menu-toggle__lines,
.menu-toggle__lines::before,
.menu-toggle__lines::after {
  width: 20px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-text);
}

.menu-toggle__lines {
  position: relative;
}

.menu-toggle__lines::before,
.menu-toggle__lines::after {
  position: absolute;
  left: 0;
  content: "";
}

.menu-toggle__lines::before {
  top: -6px;
}

.menu-toggle__lines::after {
  top: 6px;
}

.mobile-nav {
  display: none;
  position: absolute;
  z-index: 60;
  top: 100%;
  right: 0;
  left: 0;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px var(--gutter) 20px;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}

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

.mobile-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-nav a {
  display: flex;
  width: 100%;
  min-height: 48px;
  align-items: center;
  padding: 11px 12px;
  border-radius: var(--radius-small);
  font-weight: 650;
}

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

.mobile-nav__languages {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.nav-veil {
  display: none;
  position: fixed;
  z-index: 40;
  inset: var(--header-height) 0 0;
  background: var(--color-overlay);
}

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

.notice-bar {
  position: relative;
  z-index: 10;
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px var(--gutter);
  background: var(--color-accent-soft);
  font-size: 15px;
  text-align: center;
}

.notice-bar__label {
  padding: 3px 10px;
  border-radius: 8px;
  background: var(--color-accent-dark);
  color: var(--color-panel);
  font-size: 13px;
  font-weight: 800;
}

.notice-bar a {
  color: var(--color-accent-dark);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer {
  margin-top: var(--section-space);
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}

.site-footer__main {
  display: grid;
  grid-template-columns: minmax(240px, 1.2fr) repeat(3, minmax(160px, 1fr));
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 44px;
}

.site-footer__brand p {
  max-width: 370px;
  margin-top: 16px;
  color: var(--color-muted);
}

.site-footer__title {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 800;
}

.site-footer__links {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__links a {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  color: var(--color-muted);
  font-size: 14px;
}

.site-footer__links a:hover {
  color: var(--color-accent-dark);
}

.site-footer__bottom {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 16px;
  padding-bottom: 16px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 13px;
}

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

#server-status {
  position: relative;
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 0 32px;
  overflow: hidden;
}

#server-status + * {
  margin-top: 0;
}

.counter-stat {
  display: inline-block;
  min-width: 3.5ch;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.ticker-shell {
  max-width: 100%;
  overflow: hidden;
}

.ticker-track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 12px;
  will-change: transform;
}

@media (max-width: 1100px) {
  .desktop-nav__list li + li::before {
    margin-inline: 7px;
  }

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

  .site-footer__main {
    grid-template-columns: 1.3fr repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .desktop-nav,
  .language-picker {
    display: none;
  }

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

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

  .site-footer__main {
    grid-template-columns: 1fr 1fr;
  }

  h1 {
    font-size: clamp(34px, 7vw, 40px);
  }
}

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

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

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

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

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

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

  .site-brand__local {
    display: none;
  }

  .header-tools {
    gap: 5px;
    margin-left: auto;
  }

  .header-login {
    min-height: 40px;
    padding-inline: 14px;
  }

  .notice-bar {
    font-size: 13px;
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .absolute-decoration,
  .stripe-halo,
  [data-decoration] {
    max-width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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