:root {
  --color-canvas: #FFFFFF;
  --color-panel: #F4F3F0;
  --color-panel-strong: #EDECE7;
  --color-line: #E2E0DA;
  --color-accent: #EB3D14;
  --color-accent-deep: #C22E0A;
  --color-accent-soft: #FDEAE4;
  --color-accent-dot: #F5C4B4;
  --color-ink: #17203A;
  --color-muted: #5B6172;
  --color-success: #0E9F6A;
  --color-success-soft: #E3F5EE;
  --color-warning: #D97706;
  --color-error: #C81E1E;
  --color-white-text: #FFFFFF;
  --color-overlay: rgba(23, 32, 58, 0.42);
  --color-shadow-soft: rgba(23, 32, 58, 0.05);
  --color-shadow-mid: rgba(23, 32, 58, 0.08);
  --color-shadow-deep: rgba(23, 32, 58, 0.16);
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, 'Courier New', monospace;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;
  --shadow-low: 0 1px 2px var(--color-shadow-soft), 0 4px 12px var(--color-shadow-soft);
  --shadow-mid: 0 2px 6px var(--color-shadow-mid), 0 18px 44px var(--color-shadow-deep);
  --shadow-high: 0 3px 8px var(--color-shadow-mid), 0 26px 60px var(--color-shadow-deep);
  --content-max: 1120px;
  --wide-max: 1280px;
  --reading-max: 780px;
  --gutter: clamp(16px, 3vw, 32px);
  --header-height: 72px;
  --section-space: clamp(64px, 8vw, 112px);
  --transition-fast: 150ms ease;
}

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

html {
  scroll-behavior: smooth;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-body);
  -webkit-text-size-adjust: 100%;
}

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;
}

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

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

h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.18;
  text-wrap: balance;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(34px, 4vw, 48px);
  letter-spacing: -0.02em;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(28px, 3.2vw, 42px);
  letter-spacing: -0.018em;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(21px, 2.2vw, 28px);
  letter-spacing: -0.012em;
}

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

p {
  margin-bottom: 1.25em;
}

a {
  color: var(--color-accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

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

svg[aria-hidden="true"] {
  flex-shrink: 0;
}

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

button {
  cursor: pointer;
}

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-xs);
  background: var(--color-panel);
  color: var(--color-ink);
  font-size: 0.9em;
}

pre {
  max-width: 100%;
  padding: 20px;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-ink);
  color: var(--color-canvas);
  font: 13px/1.7 var(--font-mono);
  -webkit-overflow-scrolling: touch;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  border: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-panel);
  color: var(--color-ink);
  font-weight: 800;
}

td {
  background: var(--color-canvas);
  color: var(--color-ink);
}

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

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

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

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

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-max) + 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-panel {
  background: var(--color-panel);
  color: var(--color-ink);
}

.section-strong {
  background: var(--color-panel-strong);
  color: var(--color-ink);
}

.section-kicker,
.eyebrow {
  margin-bottom: 18px;
  color: var(--color-accent-deep);
  font: 700 12px/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.title-accent {
  color: var(--color-accent-deep);
  font-style: normal;
}

.keep-words {
  white-space: nowrap;
}

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

.lede {
  max-width: 720px;
  color: var(--color-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

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

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

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

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

.prose a {
  text-decoration: underline;
}

.prose li + li {
  margin-top: 0.55em;
}

.prose blockquote {
  margin-inline: 0;
}

.prose > .data-table {
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.button,
.button-primary,
.button-secondary,
.button-quiet {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.button svg,
.button-primary svg,
.button-secondary svg,
.button-quiet svg {
  width: 17px;
  height: 17px;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-white-text);
  box-shadow: var(--shadow-low);
}

.button-primary:hover {
  transform: translateY(-2px);
  background: var(--color-accent-deep);
  color: var(--color-white-text);
}

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

.button-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.button-quiet {
  background: var(--color-panel);
  color: var(--color-ink);
}

.button-quiet:hover {
  background: var(--color-panel-strong);
  color: var(--color-accent-deep);
}

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

.card,
.panel {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-low);
}

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

.panel {
  padding: clamp(24px, 4vw, 40px);
}

.card:hover {
  border-color: var(--color-accent-dot);
}

.dot-divider {
  height: 58px;
  overflow: hidden;
  border-top: 1px solid var(--color-accent-dot);
  border-bottom: 1px solid var(--color-accent-dot);
  background-color: var(--color-canvas);
  background-image: radial-gradient(var(--color-accent-dot) 1.25px, transparent 1.25px);
  background-size: 15px 15px;
}

.reveal {
  transform: translateY(18px);
  opacity: 0;
  transition: opacity 520ms ease, transform 520ms ease;
}

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

.site-topbar {
  position: relative;
  z-index: 80;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.site-topbar-inner {
  width: 100%;
  max-width: min(100%, calc(1280px + var(--gutter) * 2));
  height: var(--header-height);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
  padding-inline: var(--gutter);
}

.site-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--color-ink);
  text-decoration: none;
}

.site-brand:hover {
  color: var(--color-ink);
}

.site-brand-logo {
  width: 31px;
  height: 31px;
  flex-shrink: 0;
}

.site-brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 850;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-brand-name strong {
  color: var(--color-accent-deep);
  font-weight: inherit;
}

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

.desktop-nav-list,
.desktop-subnav {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.desktop-nav a,
.more-trigger {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 6px;
  padding: 9px 13px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.desktop-nav a:hover,
.more-trigger:hover {
  background: var(--color-panel);
  color: var(--color-ink);
}

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

.desktop-more {
  position: relative;
}

.desktop-subnav {
  position: absolute;
  top: calc(100% + 7px);
  left: 0;
  display: none;
  width: 188px;
  padding: 6px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-mid);
}

.desktop-subnav a {
  width: 100%;
  min-height: 44px;
}

.desktop-more:hover .desktop-subnav,
.desktop-more:focus-within .desktop-subnav {
  display: block;
}

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

.language-box {
  position: relative;
}

.language-trigger {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 650;
}

.language-trigger:hover {
  background: var(--color-panel);
  color: var(--color-ink);
}

.language-short {
  display: none;
}

.language-menu {
  position: absolute;
  top: calc(100% + 7px);
  right: 0;
  display: none;
  width: 174px;
  margin: 0;
  padding: 6px;
  list-style: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-mid);
}

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

.language-menu a {
  display: flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

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

.header-download {
  min-height: 42px;
  padding: 10px 18px;
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-ink);
}

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

.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;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines {
  background: transparent;
}

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

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

.mobile-drawer {
  position: absolute;
  z-index: 83;
  top: var(--header-height);
  left: 0;
  right: 0;
  display: none;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  overscroll-behavior: contain;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-mid);
}

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

.mobile-drawer-list,
.mobile-language-list {
  margin: 0;
  padding: 12px var(--gutter);
  list-style: none;
}

.mobile-language-list {
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
}

.mobile-drawer a {
  display: flex;
  width: 100%;
  min-height: 48px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: none;
}

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

.mobile-language-label {
  padding: 6px 12px 8px;
  color: var(--color-muted);
  font: 700 11px/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 1.25fr 0.8fr;
  gap: clamp(28px, 5vw, 64px);
  padding-top: 64px;
  padding-bottom: 50px;
}

.footer-brand-copy {
  max-width: 360px;
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 14px;
}

.footer-heading {
  margin-bottom: 14px;
  color: var(--color-ink);
  font: 800 12px/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.footer-links a,
.footer-languages a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  color: var(--color-muted);
  font-size: 14px;
  text-decoration: none;
}

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

.footer-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-keywords a {
  display: inline-flex;
  max-width: 100%;
  min-height: 34px;
  align-items: center;
  padding: 6px 10px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.4;
  text-decoration: none;
}

.footer-keywords a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  padding-bottom: 22px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 13px;
}

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

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

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

.hero {
  position: relative;
  overflow-x: clip;
  background: var(--color-canvas);
  color: var(--color-ink);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
  gap: 48px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 96px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-title {
  max-width: 650px;
  margin-bottom: 22px;
  font-size: clamp(34px, 3.3vw, 48px);
  line-height: 1.16;
}

.hero-description {
  max-width: 540px;
  margin-bottom: 27px;
  color: var(--color-muted);
  font-size: 16.5px;
  line-height: 1.75;
}

.hero-description strong {
  color: var(--color-ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 21px;
}

.hero-actions .button-primary {
  padding: 15px 30px;
  font-size: 16px;
}

.hero-actions .button-secondary {
  padding: 14px 26px;
  font-size: 16px;
}

.fact-chips,
.platform-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fact-chips {
  margin-bottom: 29px;
}

.fact-chip {
  display: inline-flex;
  max-width: 100%;
  min-height: 32px;
  align-items: center;
  padding: 6px 13px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 600 12px/1.4 var(--font-mono);
  text-decoration: none;
}

.fact-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.platform-strip {
  padding-top: 19px;
  border-top: 1px solid var(--color-line);
}

.platform-strip-label {
  margin-bottom: 11px;
  color: var(--color-muted);
  font: 700 11px/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.platform-link {
  display: inline-flex;
  min-height: 39px;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.platform-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.platform-link svg {
  width: 16px;
  height: 16px;
  color: var(--color-muted);
}

.hero-stage {
  position: relative;
  min-height: 560px;
}

.hero-dot-band {
  position: absolute;
  z-index: 0;
  left: -60px;
  right: -120px;
  bottom: -52px;
  height: 170px;
  background-image: radial-gradient(var(--color-accent-dot) 1.4px, transparent 1.4px);
  background-size: 15px 15px;
}

.app-window {
  position: relative;
  z-index: 1;
  width: min(568px, calc(100% - 14px));
  margin-top: 34px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-mid);
  transform: rotate(-2deg);
}

.window-chrome {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.window-dots {
  display: flex;
  gap: 7px;
  flex-shrink: 0;
}

.window-dot {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  border-radius: 50%;
}

.window-dot-error {
  background: var(--color-error);
}

.window-dot-warning {
  background: var(--color-warning);
}

.window-dot-success {
  background: var(--color-success);
}

.window-title {
  flex-shrink: 0;
  color: var(--color-ink);
  font: 700 12px/1.4 var(--font-mono);
}

.window-address {
  flex: 1;
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  overflow-wrap: anywhere;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  color: var(--color-muted);
  font: 500 11px/1.4 var(--font-mono);
}

.window-address svg {
  width: 11px;
  height: 11px;
  color: var(--color-success);
}

.settings-body {
  padding-inline: 24px;
}

.setting-line {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 17px;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--color-line);
}

.setting-line:last-child {
  border-bottom: 0;
}

.setting-copy {
  min-width: 0;
}

.setting-name {
  margin-bottom: 2px;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 800;
}

.setting-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 12px;
}

.switch-control {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
}

.switch-control::after {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-canvas);
  box-shadow: var(--shadow-low);
  content: "";
}

.switch-control.is-on {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.switch-control.is-on::after {
  right: 2px;
  left: auto;
}

.select-control {
  display: inline-flex;
  max-width: 58%;
  min-height: 34px;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  overflow-wrap: anywhere;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 750;
}

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

.window-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 500 11px/1.4 var(--font-mono);
}

.status-dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-success);
}

.routing-popover {
  position: absolute;
  z-index: 3;
  top: -16px;
  right: -16px;
  width: 308px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-high);
  transform: rotate(1.2deg);
}

.routing-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.routing-title {
  color: var(--color-ink);
  font: 800 12px/1.4 var(--font-mono);
  letter-spacing: 0.07em;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: var(--color-success-soft);
  color: var(--color-success);
  font-size: 11px;
  font-weight: 750;
}

.status-badge .status-dot {
  width: 6px;
  height: 6px;
}

.routing-list {
  padding: 6px 16px 10px;
}

.routing-rule {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--color-line);
}

.routing-rule:last-child {
  border-bottom: 0;
}

.routing-match {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--color-ink);
  font: 500 11px/1.5 var(--font-mono);
}

.route-action {
  flex-shrink: 0;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font: 800 10px/1.4 var(--font-mono);
}

.route-direct {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.route-block {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.preview-section {
  padding-top: 72px;
  padding-bottom: 72px;
  overflow-x: clip;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.swatch {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.swatch-color {
  height: 84px;
  border-bottom: 1px solid var(--color-line);
}

.swatch-canvas {
  background: var(--color-canvas);
}

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

.swatch-panel-strong {
  background: var(--color-panel-strong);
}

.swatch-line {
  background: var(--color-line);
}

.swatch-accent {
  background: var(--color-accent);
}

.swatch-accent-deep {
  background: var(--color-accent-deep);
}

.swatch-ink {
  background: var(--color-ink);
}

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

.swatch-success {
  background: var(--color-success);
}

.swatch-warning {
  background: var(--color-warning);
}

.swatch-error {
  background: var(--color-error);
}

.swatch-meta {
  padding: 12px;
}

.swatch-meta strong,
.swatch-meta code {
  display: block;
  overflow-wrap: anywhere;
}

.swatch-meta code {
  margin-top: 5px;
  color: var(--color-muted);
  font-size: 11px;
}

.type-sample-display {
  font: 850 clamp(34px, 5vw, 48px)/1.15 var(--font-display);
  letter-spacing: -0.02em;
}

.type-sample-body {
  color: var(--color-muted);
  font: 400 17px/1.75 var(--font-body);
}

.type-sample-mono {
  color: var(--color-accent-deep);
  font: 700 13px/1.6 var(--font-mono);
  letter-spacing: 0.1em;
}

.button-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

  .hero-grid {
    gap: 26px;
  }

  .routing-popover {
    right: 0;
  }

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

  .swatch-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

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

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

  .hero-grid {
    grid-template-columns: 1fr;
    padding-top: 50px;
    padding-bottom: 72px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero-stage {
    width: min(680px, 100%);
    min-height: 520px;
    margin-inline: auto;
  }

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

@media (max-width: 768px) {
  h1,
  .hero-title {
    font-size: clamp(24px, 7.5vw, 30px);
    line-height: 1.16;
    letter-spacing: -0.018em;
  }

  h2 {
    font-size: clamp(25px, 7vw, 34px);
  }

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

  .language-full {
    display: none;
  }

  .language-short {
    display: inline;
  }

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

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

  .swatch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-stage {
    min-height: 470px;
  }

  .app-window {
    width: calc(100% - 8px);
  }
}

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

  body {
    font-size: 15px;
  }

  .site-topbar-inner {
    height: var(--header-height);
    gap: 8px;
  }

  .site-brand {
    gap: 8px;
  }

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

  .site-brand-name strong {
    display: none;
  }

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

  .language-trigger {
    min-width: 44px;
    justify-content: center;
    padding-inline: 7px;
  }

  .hero-grid {
    gap: 34px;
    padding-top: 38px;
    padding-bottom: 56px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-actions {
    align-items: stretch;
  }

  .hero-actions .button-primary,
  .hero-actions .button-secondary {
    flex: 1 1 150px;
    padding-inline: 16px;
  }

  .fact-chips,
  .platform-links {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .fact-chip,
  .platform-link {
    flex: 0 1 auto;
  }

  .hero-stage {
    min-height: 420px;
  }

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

  .app-window {
    width: 100%;
    margin-top: 54px;
  }

  .routing-popover {
    top: 0;
    right: 8px;
    width: min(272px, calc(100% - 24px));
  }

  .window-chrome {
    gap: 9px;
    padding-inline: 12px;
  }

  .window-address {
    padding-inline: 8px;
    font-size: 9px;
  }

  .settings-body {
    padding-inline: 14px;
  }

  .setting-line {
    align-items: flex-start;
    gap: 10px;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .select-control {
    max-width: 48%;
    font-size: 10px;
  }

  .window-status {
    padding-inline: 14px;
  }

  .hero-dot-band {
    right: -16px;
    left: -16px;
    bottom: -28px;
  }

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

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

  .button-demo .button-primary,
  .button-demo .button-secondary,
  .button-demo .button-quiet {
    flex: 1 1 140px;
  }

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

@media (max-width: 380px) {
  .site-brand-name {
    font-size: 14px;
  }

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

  .routing-popover {
    right: 0;
  }

  .platform-link {
    padding-inline: 10px;
  }
}

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

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

  .reveal {
    transform: none;
  }
}