:root {
  color-scheme: light;
  --ink: #16181d;
  --ink-strong: #111318;
  --muted: #545b68;
  --faint: #7a828e;
  --line: #dfe3e8;
  --line-strong: #c6cdd6;
  --paper: #f8f9fa;
  --panel: #ffffff;
  --panel-alt: #f1f3f5;
  --accent: #0f62fe;
  --accent-dark: #003a8c;
  --shadow-border: 0 0 0 1px rgba(17, 19, 24, 0.09);
  --shadow-card: 0 0 0 1px rgba(17, 19, 24, 0.08), 0 10px 28px rgba(17, 19, 24, 0.05);
  --radius: 6px;
  --max: 1180px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --font-display: "Aptos Display", "Segoe UI Variable Display", "SF Pro Display", "Helvetica Neue", sans-serif;
  --font-body: "Aptos", "Segoe UI Variable Text", "SF Pro Text", "Helvetica Neue", sans-serif;
  --font-mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: var(--font-body);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

::selection {
  background: rgba(15, 98, 254, 0.18);
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 12px;
  transform: translateY(-140%);
  z-index: 5;
  background: var(--ink-strong);
  color: var(--panel);
  padding: 10px 14px;
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.site-footer,
main {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  gap: 22px;
  align-items: center;
  min-height: 72px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink-strong);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  width: fit-content;
}

.brand-logo {
  width: 40px;
  height: 40px;
  display: block;
  border-radius: 5px;
  box-shadow: var(--shadow-border);
}

.brand-text {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0;
}

.site-nav,
.language-nav,
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.language-nav {
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.site-nav a,
.language-nav a,
.site-footer a {
  color: var(--muted);
  border-radius: 4px;
  padding: 8px 10px;
  text-decoration: none;
  font-size: 14px;
  line-height: 1;
}

.language-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faint);
}

.site-nav a:hover,
.language-nav a:hover,
.site-footer a:hover {
  background: var(--panel-alt);
  color: var(--ink-strong);
}

.site-nav a[aria-current="page"],
.language-nav a[aria-current="page"] {
  color: var(--ink-strong);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.hero {
  min-height: 600px;
  padding: 80px 0 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(380px, 0.76fr);
  gap: 56px;
  align-items: center;
}

.hero-copy-block {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-dark);
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  color: var(--ink-strong);
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: 72px;
  font-weight: 500;
  line-height: 1.02;
  margin-bottom: 24px;
}

h2 {
  font-size: 42px;
  font-weight: 500;
  line-height: 1.12;
  margin-bottom: 16px;
}

h3 {
  font-size: 21px;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 10px;
}

.hero-copy,
.lede {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 160ms var(--ease-out), background-color 160ms var(--ease-out), color 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
}

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

.button.secondary {
  background: var(--panel);
  color: var(--ink-strong);
  box-shadow: var(--shadow-border);
}

.button:active {
  transform: scale(0.98);
}

.signal-board {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.board-topline,
.board-question,
.board-rail,
.board-tags {
  padding: 18px;
}

.board-topline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  background: var(--ink-strong);
  color: var(--panel);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.board-question {
  border-bottom: 1px solid var(--line);
}

.board-label {
  display: block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.board-question strong {
  display: block;
  color: var(--ink-strong);
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 600;
  line-height: 1.18;
}

.board-rail {
  display: grid;
  gap: 0;
  background: var(--panel);
}

.board-rail div {
  display: grid;
  grid-template-columns: 42px minmax(0, 0.52fr) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.board-rail div:first-child {
  padding-top: 0;
}

.board-rail div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.board-rail span {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 12px;
}

.board-rail strong {
  color: var(--ink-strong);
  line-height: 1.25;
}

.board-rail p {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 0;
}

.board-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--line);
  background: var(--panel-alt);
}

.board-tags span,
.domain,
.card-index {
  font-family: var(--font-mono);
}

.board-tags span {
  color: var(--ink);
  font-size: 12px;
  padding: 6px 0;
}

.board-tags span + span::before {
  content: "/";
  color: var(--line-strong);
  margin-right: 8px;
}

.section {
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.compact-section {
  padding-top: 48px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.split-heading {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: end;
}

.split-heading p {
  color: var(--muted);
}

.answer-panel,
.guide-card,
.decision-card,
.status-panel,
.contact-box,
.content-card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-border);
}

.answer-panel {
  padding: 32px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  gap: 36px;
  align-items: start;
}

.answer-panel h2 {
  font-size: 32px;
  margin-bottom: 0;
}

.answer-panel p {
  color: var(--muted);
  margin-bottom: 0;
  font-size: 18px;
}

.decision-grid,
.guide-grid,
.market-grid,
.regional-list {
  display: grid;
  gap: 16px;
}

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

.guide-grid {
  grid-template-columns: 1.12fr 0.94fr 0.94fr;
}

.decision-card,
.guide-card,
.content-card {
  padding: 24px;
}

.decision-card {
  display: flex;
  min-height: 248px;
  flex-direction: column;
}

.decision-card h3,
.guide-card h3 {
  margin-top: 18px;
}

.decision-card p,
.guide-card p,
.status-panel p,
.page p,
.topic-list,
.stack-list p,
.content-card p {
  color: var(--muted);
}

.card-index,
.domain {
  color: var(--faint);
  font-size: 12px;
}

.guide-card a {
  display: inline-flex;
  width: fit-content;
  margin-top: 8px;
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 1.15fr);
  gap: 52px;
}

.stack-list {
  display: grid;
  gap: 0;
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-border);
}

.stack-list div {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.stack-list div:last-child {
  border-bottom: 0;
}

.stack-list strong {
  color: var(--ink-strong);
}

.stack-list p {
  margin: 6px 0 0;
}

.language-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(300px, 1fr);
  gap: 42px;
  align-items: start;
}

.market-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.market-grid a {
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 18px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.market-grid a span {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
}

.market-grid a[aria-current="page"] {
  background: var(--panel-alt);
}

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

.status-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: 32px;
  align-items: start;
  padding: 30px;
}

.topic-list {
  margin: 0;
  padding-left: 20px;
}

.topic-list li + li {
  margin-top: 8px;
}

.topic-list.compact {
  max-width: 820px;
}

.page {
  padding: 64px 0 76px;
  border-top: 0;
}

.page h1 {
  font-size: 58px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 0.7fr);
  gap: 40px;
  align-items: start;
}

.content-block {
  max-width: 820px;
  margin-top: 40px;
}

.content-block h2,
.content-card h2 {
  font-size: 28px;
}

.content-card {
  margin-top: 8px;
}

.regional-list {
  margin-top: 18px;
  gap: 0;
  border-top: 1px solid var(--line);
}

.regional-list a {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.regional-list strong {
  display: block;
  color: var(--ink-strong);
}

.regional-list span {
  color: var(--muted);
  font-size: 14px;
}

.contact-box {
  max-width: 620px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 24px;
}

.contact-box span {
  color: var(--muted);
}

.small-note {
  margin-top: 14px;
  font-size: 14px;
}

.site-footer {
  padding: 32px 0 42px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.site-footer p {
  color: var(--muted);
  margin: 4px 0 0;
}

[dir="rtl"] .site-header,
[dir="rtl"] .site-footer,
[dir="rtl"] .hero,
[dir="rtl"] .split,
[dir="rtl"] .language-section,
[dir="rtl"] .status-panel,
[dir="rtl"] .page-grid,
[dir="rtl"] .split-heading {
  direction: rtl;
}

[dir="rtl"] .language-nav {
  padding-left: 0;
  padding-right: 14px;
  border-left: 0;
  border-right: 1px solid var(--line);
}

[dir="rtl"] .topic-list {
  padding-left: 0;
  padding-right: 20px;
}

[dir="rtl"] .market-grid {
  border-left: 0;
  border-right: 1px solid var(--line);
}

[dir="rtl"] .market-grid a {
  border-right: 0;
  border-left: 1px solid var(--line);
}

@media (hover: hover) and (pointer: fine) {
  .button:hover {
    transform: translateY(-1px);
  }

  .market-grid a:hover {
    background: var(--panel-alt);
  }
}

@media (max-width: 1020px) {
  .site-header {
    grid-template-columns: 1fr;
    align-items: start;
    padding: 16px 0;
  }

  .language-nav {
    padding-left: 0;
    border-left: 0;
  }

  .hero,
  .answer-panel,
  .split-heading,
  .split,
  .language-section,
  .status-panel,
  .page-grid {
    grid-template-columns: 1fr;
  }

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

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

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  h1 {
    font-size: 58px;
  }

  h2 {
    font-size: 36px;
  }

  .answer-panel h2 {
    font-size: 30px;
  }

  .page h1 {
    font-size: 46px;
  }
}

@media (max-width: 640px) {
  .site-header,
  .site-footer,
  main {
    width: min(var(--max), calc(100% - 28px));
  }

  .site-footer,
  .contact-box {
    display: block;
  }

  .hero {
    padding: 40px 0;
    gap: 34px;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 32px;
  }

  .answer-panel h2,
  .page h1 {
    font-size: 36px;
  }

  .hero-copy,
  .lede {
    font-size: 18px;
  }

  .board-topline {
    display: grid;
  }

  .board-rail div {
    grid-template-columns: 34px 1fr;
  }

  .board-rail p {
    grid-column: 2;
  }

  .decision-grid,
  .market-grid {
    grid-template-columns: 1fr;
  }

  .decision-card {
    min-height: auto;
  }

  .section {
    padding: 44px 0;
  }
}

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

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