:root {
  --color-page: #FFFFFF;
  --color-panel: #F6F8F8;
  --color-panel-strong: #EDF1F1;
  --color-line: #E3E8E8;
  --color-accent: #00A88F;
  --color-accent-dark: #007A67;
  --color-text: #0B0F0E;
  --color-text-muted: #5B6664;
  --color-success: #12A150;
  --color-warning: #FF9F1C;
  --color-error: #E5484D;
  --color-stop-orange: #FF8A1E;
  --color-stop-sky: #2BA6FF;
  --color-stop-rose: #FF5C8A;
  --color-white-soft: rgba(255, 255, 255, 0.92);
  --color-accent-wash: rgba(0, 168, 143, 0.12);
  --color-accent-glow: rgba(0, 168, 143, 0.42);
  --color-shadow-soft: rgba(11, 15, 14, 0.05);
  --color-shadow-deep: rgba(11, 15, 14, 0.16);
  --color-shadow-dot: rgba(11, 15, 14, 0.18);
  --color-veil: rgba(11, 15, 14, 0.38);
  --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, 'Courier New', monospace;
  --radius-small: 12px;
  --radius-medium: 22px;
  --radius-large: 28px;
  --radius-panel: 36px;
  --radius-pill: 999px;
  --shadow-soft: 0 2px 6px var(--color-shadow-soft), 0 14px 34px -18px var(--color-shadow-deep);
  --shadow-accent: 0 2px 6px var(--color-shadow-soft), 0 18px 38px -16px var(--color-accent-glow);
  --shadow-float: 0 22px 58px -32px var(--color-shadow-deep);
  --content-width: 1240px;
  --prose-width: 820px;
  --gutter: 32px;
  --header-height: 70px;
  --section-space: clamp(72px, 9vw, 124px);
  --transition-fast: 150ms ease;
  --transition-medium: 280ms ease;
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
  background: var(--color-page);
}

html.nav-open {
  overflow: hidden;
}

html {
  overflow-x: clip;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--color-page);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

img {
  height: auto;
}

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

button,
select {
  cursor: pointer;
}

button {
  color: inherit;
}

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

a,
button {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-small);
}

::selection {
  background: var(--color-accent-wash);
  color: var(--color-accent-dark);
}

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

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(34px, 3.8vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.018em;
  line-height: 1.16;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(23px, 2.4vw, 30px);
  font-weight: 760;
  letter-spacing: -0.012em;
  line-height: 1.28;
}

h4 {
  margin-bottom: 10px;
  font-size: 19px;
  font-weight: 750;
  line-height: 1.4;
}

p {
  margin-bottom: 1.1em;
}

ul,
ol {
  padding-left: 1.4em;
}

li + li {
  margin-top: 0.45em;
}

strong {
  font-weight: 750;
}

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

code {
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 22px 24px;
  border-radius: var(--radius-medium);
  background: var(--color-panel-strong);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-overflow-scrolling: touch;
}

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

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

th,
td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

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

hr {
  height: 1px;
  margin: 48px 0;
  border: 0;
  background: var(--color-line);
}

.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 > * {
  min-width: 0;
}

.prose h2 {
  margin-top: 2.1em;
}

.prose h3 {
  margin-top: 1.7em;
}

.prose a {
  color: var(--color-accent-dark);
  font-weight: 650;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-wash);
  text-decoration-thickness: 3px;
  text-underline-offset: 3px;
}

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

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

.section-heading {
  max-width: 780px;
  margin-bottom: 42px;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  margin-bottom: 16px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-wash);
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: 750;
}

.nowrap-term {
  white-space: nowrap;
}

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

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

.panel,
.card {
  min-width: 0;
  border-radius: var(--radius-large);
  background: var(--color-page);
  box-shadow: var(--shadow-soft);
}

.panel {
  padding: clamp(24px, 4vw, 48px);
}

.card {
  padding: 26px;
}

.card-title {
  margin-bottom: 9px;
  font-size: 21px;
}

.card-copy {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.grid {
  display: grid;
  gap: 24px;
}

.grid > * {
  min-width: 0;
}

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

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

.icon,
.status-dot,
.chip-dot,
.badge-dot {
  flex-shrink: 0;
}

.button,
.btn-main,
.btn-ghost,
.btn-secondary {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 28px;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: 15.5px;
  font-weight: 750;
  line-height: 1.2;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.button svg,
.btn-main svg,
.btn-ghost svg,
.btn-secondary svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.button-primary,
.btn-main {
  background: var(--color-accent);
  color: var(--color-page);
  box-shadow: var(--shadow-accent);
}

.button-primary:hover,
.btn-main:hover {
  transform: translateY(-2px);
  background: var(--color-accent-dark);
}

.button-secondary,
.btn-ghost,
.btn-secondary {
  background: var(--color-page);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.button-secondary:hover,
.btn-ghost:hover,
.btn-secondary:hover {
  transform: translateY(-2px);
  background: var(--color-panel);
}

.button-danger {
  background: var(--color-error);
  color: var(--color-page);
}

.button[disabled],
.button.is-disabled {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
}

.site-top {
  position: relative;
  z-index: 60;
  padding-top: 16px;
  padding-bottom: 16px;
  background: var(--color-page);
}

.top-inner {
  display: flex;
  min-height: 38px;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  min-width: 0;
  flex: none;
  align-items: center;
  gap: 11px;
}

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

.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.top-nav a {
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.4;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.top-nav a:hover {
  background: var(--color-panel);
  color: var(--color-text);
}

.top-nav a.is-now {
  background: var(--color-accent-wash);
  color: var(--color-accent-dark);
  font-weight: 700;
}

.header-tools {
  position: relative;
  display: flex;
  flex: none;
  align-items: center;
  gap: 8px;
}

.lang-control {
  position: relative;
}

.lang-pick {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-size: 13.5px;
  font-weight: 550;
  white-space: nowrap;
}

.lang-short {
  display: none;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 72;
  display: none;
  width: 178px;
  padding: 8px;
  border-radius: var(--radius-medium);
  background: var(--color-page);
  box-shadow: var(--shadow-float);
}

.lang-control.is-open .lang-menu {
  display: block;
}

.lang-menu a {
  display: flex;
  min-height: 42px;
  align-items: center;
  padding: 9px 12px;
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
  font-size: 14px;
}

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

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
}

.menu-toggle-lines,
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  content: "";
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle-lines {
  position: relative;
  margin-inline: auto;
}

.menu-toggle-lines::before {
  position: absolute;
  top: -6px;
  left: 0;
}

.menu-toggle-lines::after {
  position: absolute;
  top: 6px;
  left: 0;
}

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

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  position: absolute;
  top: 100%;
  right: var(--gutter);
  left: var(--gutter);
  z-index: 71;
  display: none;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  padding: 12px;
  border-radius: var(--radius-large);
  background: var(--color-page);
  box-shadow: var(--shadow-float);
  overscroll-behavior: contain;
}

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

.mobile-nav a {
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  padding: 11px 14px;
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
  font-weight: 650;
}

.mobile-nav a:hover,
.mobile-nav a.is-now {
  background: var(--color-accent-wash);
  color: var(--color-accent-dark);
}

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

.nav-veil {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  border: 0;
  background: var(--color-veil);
}

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

.site-footer {
  padding-top: 72px;
  padding-bottom: 24px;
  background: var(--color-panel);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1.15fr 0.8fr;
  gap: 42px;
}

.footer-grid > * {
  min-width: 0;
}

.footer-brand-copy {
  max-width: 310px;
  margin-top: 16px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.footer-heading {
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  width: fit-content;
  max-width: 100%;
  color: var(--color-text-muted);
  font-size: 14px;
  overflow-wrap: anywhere;
}

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

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

.footer-keywords a {
  max-width: 100%;
  padding: 7px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-text-muted);
  font-size: 12.5px;
  overflow-wrap: anywhere;
}

.footer-bottom {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
  color: var(--color-text-muted);
  font-size: 13px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-left: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 560ms ease, transform 560ms ease;
}

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

.decorative-stage,
.hero,
.hero-visual,
.atmosphere,
.has-absolute-decoration {
  overflow-x: clip;
}

.tilt-card {
  transform: rotate(-0.35deg);
}

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

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

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

@media (max-width: 1080px) {
  .top-inner {
    gap: 18px;
  }

  .top-nav a {
    padding-inline: 10px;
    font-size: 13.5px;
  }

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

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

@media (max-width: 860px) {
  :root {
    --gutter: 22px;
  }

  .top-nav {
    display: none;
  }

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

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .lang-menu {
    display: none !important;
  }

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

@media (max-width: 768px) {
  h1 {
    font-size: clamp(24px, 8.8vw, 30px);
    line-height: 1.14;
    letter-spacing: -0.018em;
  }

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

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

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

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --radius-large: 24px;
    --radius-panel: 28px;
  }

  body {
    font-size: 15px;
  }

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

  .site-top {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-name {
    display: none;
  }

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

  .lang-pick {
    min-width: 48px;
    padding-inline: 12px;
  }

  .lang-full {
    display: none;
  }

  .lang-short {
    display: inline;
  }

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

  .button,
  .btn-main,
  .btn-ghost,
  .btn-secondary {
    min-height: 46px;
    padding-inline: 22px;
  }

  .panel,
  .card {
    padding: 22px;
  }

  th,
  td {
    padding: 12px 14px;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

  .footer-legal {
    margin-left: 0;
  }

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

  .chip-row,
  .fact-row,
  .badge-row {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 380px) {
  .header-tools {
    gap: 5px;
  }

  .lang-pick {
    min-width: 44px;
  }

  .button,
  .btn-main,
  .btn-ghost,
  .btn-secondary {
    width: 100%;
  }
}