:root {
  --color-bg: #F4F5F7;
  --color-panel: #FFFFFF;
  --color-panel-alt: #EBEDF1;
  --color-border: #DDE0E6;
  --color-accent: #E9500E;
  --color-accent-dark: #C23F05;
  --color-text: #17181C;
  --color-muted: #5A5F6B;
  --color-success: #12873F;
  --color-warning: #B77900;
  --color-error: #D62839;
  --color-aurora-pink: #FFD9E8;
  --color-aurora-blue: #D6E7FF;
  --color-aurora-teal: #DFF7F2;
  --color-edge-pink: #F3C3D9;
  --color-edge-blue: #BFD8F6;
  --color-edge-orange: #F6D3B4;
  --color-tint-pink: #FDF3F8;
  --color-tint-blue: #F3F8FE;
  --color-tint-orange: #FDF6EE;
  --color-window: #1B1D24;
  --color-window-alt: #22252E;
  --color-window-border: #2F333E;
  --color-window-text: #E8EAF0;
  --color-window-muted: #A8ADBA;
  --color-window-success: #63D394;
  --color-window-error: #F0788A;
  --color-window-accent: #F49B6A;
  --color-overlay: rgba(23, 24, 28, .46);
  --color-clear: rgba(255, 255, 255, 0);
  --color-bg-clear: rgba(244, 245, 247, 0);
  --color-pink-clear: rgba(255, 217, 232, 0);
  --color-blue-clear: rgba(214, 231, 255, 0);
  --color-teal-clear: rgba(223, 247, 242, 0);
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-large: 24px;
  --radius-medium: 14px;
  --radius-small: 9px;
  --radius-pill: 999px;
  --shadow-soft: 0 1px 2px rgba(23, 24, 28, .05), 0 8px 24px rgba(23, 24, 28, .07);
  --shadow-float: 0 2px 6px rgba(23, 24, 28, .06), 0 16px 40px rgba(23, 24, 28, .12);
  --shadow-window: 0 3px 10px rgba(23, 24, 28, .14), 0 26px 56px rgba(23, 24, 28, .20);
  --shadow-fab: 0 12px 36px rgba(23, 24, 28, .18);
  --content-width: 1216px;
  --reading-width: 840px;
  --header-height: 64px;
  --gutter: clamp(16px, 4vw, 32px);
  --section-space: clamp(64px, 9vw, 112px);
  --transition-fast: 150ms ease;
  --transition-slow: 600ms cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  min-width: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html.nav-open {
  overflow: hidden;
}

body {
  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;
}

body,
button,
input,
select,
textarea {
  font-family: var(--font-body);
}

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

img {
  height: auto;
}

svg[aria-hidden="true"],
.icon,
.brand-logo,
.app-logo,
.status-dot {
  flex-shrink: 0;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible,
[role="tab"]:focus-visible {
  outline: 3px solid var(--color-edge-blue);
  outline-offset: 3px;
}

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

button {
  border: 0;
  cursor: pointer;
}

p,
ul,
ol,
dl,
pre,
blockquote,
figure {
  margin-top: 0;
}

p {
  margin-bottom: 1.15em;
}

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

h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 850;
  line-height: 1.18;
  text-wrap: balance;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(34px, 4.2vw, 48px);
  letter-spacing: -.02em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: -.015em;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(21px, 2vw, 27px);
}

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

.title-lock {
  white-space: nowrap;
}

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

strong {
  color: var(--color-text);
}

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

:not(pre) > code {
  overflow-wrap: anywhere;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-alt);
  color: var(--color-text);
  padding: .1em .38em;
  font-size: .9em;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-window-border);
  border-radius: var(--radius-medium);
  background: var(--color-window);
  color: var(--color-window-text);
  padding: 20px;
  line-height: 1.65;
  tab-size: 2;
}

pre code {
  color: inherit;
  white-space: pre;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-panel);
  color: var(--color-text);
}

th,
td {
  border: 1px solid var(--color-border);
  padding: 13px 15px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-panel-alt);
  color: var(--color-text);
  font-weight: 750;
}

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

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-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-head {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-head.is-centered {
  margin-inline: auto;
  text-align: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 13px;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .04em;
}

.kicker::before {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.lead {
  color: var(--color-muted);
  font-size: clamp(17px, 2vw, 20px);
}

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

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

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

.panel {
  padding: clamp(22px, 4vw, 42px);
}

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

.card-pink {
  border-color: var(--color-edge-pink);
  background: var(--color-tint-pink);
  color: var(--color-text);
}

.card-blue {
  border-color: var(--color-edge-blue);
  background: var(--color-tint-blue);
  color: var(--color-text);
}

.card-orange {
  border-color: var(--color-edge-orange);
  background: var(--color-tint-orange);
  color: var(--color-text);
}

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

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-medium);
  padding: 11px 24px;
  color: var(--color-text);
  font-weight: 750;
  line-height: 1.35;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

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

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

.button-primary:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-accent-dark);
  color: var(--color-panel);
  box-shadow: var(--shadow-float);
}

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

.button-secondary:hover {
  border-color: var(--color-muted);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.button-disabled,
.button:disabled {
  border-color: var(--color-border);
  background: var(--color-panel-alt);
  color: var(--color-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-accent-dark);
  font-weight: 750;
}

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

.chip-row,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.chip {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.site-head {
  position: relative;
  z-index: 80;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-text);
}

.header-row {
  width: 100%;
  max-width: min(100%, calc(1280px + var(--gutter) * 2));
  min-height: var(--header-height);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
}

.brand-logo {
  width: 30px;
  height: 30px;
}

.brand-name {
  font-size: 17px;
  font-weight: 850;
  letter-spacing: .01em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 3px;
  margin-left: auto;
}

.nav-link,
.more-button {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-clear);
  color: var(--color-muted);
  padding: 8px 13px;
  font-size: 14px;
  font-weight: 680;
}

.nav-link:hover,
.nav-link.is-active,
.more-button:hover,
.more-button.is-active {
  background: var(--color-panel-alt);
  color: var(--color-text);
}

.nav-more,
.language-menu {
  position: relative;
}

.caret {
  width: 8px;
  height: 8px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-dropdown,
.language-dropdown {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  min-width: 178px;
  visibility: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-float);
  opacity: 0;
  padding: 7px;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav-more:hover .nav-dropdown,
.nav-more:focus-within .nav-dropdown,
.language-menu.is-open .language-dropdown {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.nav-dropdown a,
.language-dropdown a {
  display: flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  border-radius: var(--radius-small);
  color: var(--color-muted);
  padding: 9px 12px;
  font-size: 14px;
  font-weight: 650;
}

.nav-dropdown a:hover,
.nav-dropdown a.is-active,
.language-dropdown a:hover,
.language-dropdown a[aria-current="true"] {
  background: var(--color-panel-alt);
  color: var(--color-text);
}

.header-tools {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 8px;
}

.language-button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  padding: 7px 13px;
  font-size: 13px;
  font-weight: 680;
  white-space: nowrap;
}

.language-button:hover {
  border-color: var(--color-muted);
  color: var(--color-text);
}

.language-short {
  display: none;
}

.menu-button {
  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-text);
}

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

.menu-lines {
  position: relative;
}

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

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

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

.menu-button[aria-expanded="true"] .menu-lines {
  background: var(--color-clear);
}

.menu-button[aria-expanded="true"] .menu-lines::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-lines::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-nav {
  display: none;
}

.mobile-nav-veil {
  display: none;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.45fr .8fr;
  gap: 38px;
  padding-top: 58px;
  padding-bottom: 42px;
}

.footer-brand p {
  max-width: 32em;
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 14px;
}

.footer-title {
  margin-bottom: 14px;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 5px;
}

.footer-links a {
  display: block;
  color: var(--color-muted);
  padding-block: 4px;
  font-size: 14px;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  padding-bottom: 24px;
  color: var(--color-muted);
  font-size: 13px;
}

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

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.tilt-soft {
  transform: rotate(.35deg);
}

.decorated-section,
.hero,
.aurora-stage {
  overflow-x: clip;
}

.full-bleed-art {
  position: absolute;
  inset-inline: 0;
  max-width: 100%;
  pointer-events: none;
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

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

@media (max-width: 1040px) {
  .desktop-nav {
    display: none;
  }

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

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

  .mobile-nav-veil {
    position: fixed;
    z-index: 70;
    inset: var(--header-height) 0 0;
    background: var(--color-overlay);
  }

  .site-head.has-open-nav .mobile-nav-veil {
    display: block;
  }

  .mobile-nav {
    position: absolute;
    z-index: 90;
    top: 100%;
    right: var(--gutter);
    left: var(--gutter);
    max-height: calc(100dvh - var(--header-height) - 12px);
    overflow-y: auto;
    overscroll-behavior: contain;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);
    background: var(--color-panel);
    color: var(--color-text);
    box-shadow: var(--shadow-float);
    padding: 10px;
  }

  .site-head.has-open-nav .mobile-nav {
    display: block;
  }

  .mobile-nav a {
    display: flex;
    width: 100%;
    min-height: 46px;
    align-items: center;
    border-radius: var(--radius-small);
    color: var(--color-muted);
    padding: 10px 13px;
    font-weight: 680;
  }

  .mobile-nav a:hover,
  .mobile-nav a.is-active,
  .mobile-nav a[aria-current="true"] {
    background: var(--color-panel-alt);
    color: var(--color-text);
  }

  .mobile-language-title {
    margin: 8px 12px 4px;
    color: var(--color-muted);
    font-size: 12px;
    font-weight: 750;
    letter-spacing: .05em;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --header-height: 60px;
  }

  h1 {
    font-size: clamp(24px, 8vw, 30px);
    line-height: 1.16;
  }

  h2 {
    font-size: clamp(24px, 7vw, 30px);
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-logo {
    width: 28px;
    height: 28px;
  }

  .language-full {
    display: none;
  }

  .language-short {
    display: inline;
  }

  .language-button {
    min-width: 44px;
    justify-content: center;
    padding-inline: 10px;
  }

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

  .button-row .button {
    flex: 1 1 145px;
  }

  .chip-row,
  .badge-row {
    flex-direction: row;
    justify-content: flex-start;
  }

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

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

  .footer-bottom {
    flex-direction: column;
  }

  th,
  td {
    padding: 11px 12px;
  }
}