@font-face {
  font-family: "Instrument Sans";
  src: url("assets/fonts/instrument-sans.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400 700;
}

@font-face {
  font-family: "Public Sans";
  src: url("assets/fonts/public-sans.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 300 800;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/fonts/ibm-plex-mono.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

:root {
  color-scheme: dark;
  --ink: #f8fafc;
  --muted: #94a3b8;
  --quiet: #64748b;
  --bg: #0b1120;
  --panel: #111a2e;
  --panel-strong: #16213a;
  --line: rgba(148, 163, 184, 0.2);
  --line-bright: rgba(96, 165, 250, 0.42);
  --signal: #60a5fa;
  --signal-dark: #2563eb;
  --trace: #34d399;
  --display: "Instrument Sans", system-ui, sans-serif;
  --body: "Public Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --page: min(1240px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 73% 8%, rgba(37, 99, 235, 0.18), transparent 34%),
    linear-gradient(rgba(148, 163, 184, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.025) 1px, transparent 1px);
  background-size: auto, 64px 64px, 64px 64px;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin-top: 0; }
h1, h2, h3 { font-family: var(--display); line-height: 1.02; letter-spacing: -0.035em; }
h1 { max-width: 780px; margin-bottom: 28px; font-size: clamp(3.2rem, 6.1vw, 5.4rem); font-weight: 620; }
h2 { max-width: 850px; margin-bottom: 22px; font-size: clamp(2.25rem, 5vw, 4.7rem); font-weight: 600; }
h3 { font-size: clamp(1.35rem, 2vw, 2rem); font-weight: 590; }
p { color: var(--muted); }

:focus-visible { outline: 3px solid var(--trace); outline-offset: 4px; }
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--bg);
  background: var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  min-height: 72px;
  padding: 12px max(24px, calc((100vw - 1240px) / 2));
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 17, 32, 0.88);
  backdrop-filter: blur(18px);
}

.brand, .footer-brand { display: flex; align-items: center; gap: 12px; font-family: var(--display); }
.brand { justify-self: start; font-size: 1.08rem; font-weight: 650; }
.brand img, .footer-brand img { border-radius: 8px; }
.main-nav { display: flex; gap: 32px; font-size: 0.9rem; color: var(--muted); }
.main-nav a, .header-link, footer a { transition: color 160ms ease; }
.main-nav a:hover, .header-link:hover, footer a:hover { color: var(--signal); }
.header-link { justify-self: end; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }

.hero {
  width: var(--page);
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 92px 0 78px;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(500px, 0.88fr);
  align-items: center;
  gap: 64px;
}
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-index, .telemetry, .fact-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 28px; color: var(--trace); }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--trace); box-shadow: 0 0 14px rgba(52, 211, 153, 0.7); }
.hero-summary { max-width: 620px; margin-bottom: 32px; font-size: clamp(1.08rem, 1.5vw, 1.28rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  min-height: 48px;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 9px;
  font-family: var(--display);
  font-size: 0.94rem;
  font-weight: 650;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--signal-dark); box-shadow: 0 12px 40px rgba(37, 99, 235, 0.25); }
.button-primary:hover { background: #1d4ed8; }
.button-secondary { border-color: var(--line); background: rgba(17, 26, 46, 0.72); }
.button-secondary:hover { border-color: var(--line-bright); }
.release-note { margin: 19px 0 0; font-family: var(--mono); font-size: 0.72rem; }

.hero-visual {
  margin: 0 -4vw 0 0;
  padding: 10px;
  border: 1px solid var(--line-bright);
  border-radius: 16px;
  background: rgba(17, 26, 46, 0.76);
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.44), 0 0 90px rgba(37, 99, 235, 0.08);
  transform: perspective(1500px) rotateY(-3deg);
}
.hero-visual img { width: 100%; border-radius: 8px; }
.window-bar { height: 34px; padding: 0 8px 8px; display: flex; align-items: center; justify-content: space-between; color: var(--quiet); font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; }
.hero-visual figcaption { padding: 10px 6px 2px; color: var(--quiet); font-size: 0.72rem; }

.fact-strip {
  width: var(--page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.fact-strip > div { padding: 24px 28px; border-right: 1px solid var(--line); }
.fact-strip > div:last-child { border-right: 0; }
.fact-label { display: block; margin-bottom: 3px; color: var(--quiet); }
.fact-strip strong { font-family: var(--display); font-size: 0.98rem; }

.section { width: var(--page); margin: 0 auto; padding: 150px 0; }
.section-intro { display: grid; grid-template-columns: 0.36fr 1.2fr 0.72fr; gap: 42px; align-items: start; margin-bottom: 70px; }
.section-intro.compact { grid-template-columns: 0.36fr 1.8fr; }
.section-index { color: var(--signal); }
.section-intro p:last-child { font-size: 1.03rem; }

.feature-grid { display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 18px; }
.feature {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(17, 26, 46, 0.74);
}
.feature-copy { padding: 42px 42px 28px; }
.feature h3 { margin: 13px 0 15px; }
.feature p { margin-bottom: 0; }
.telemetry { color: var(--trace); }
.feature img { width: calc(100% - 36px); margin: 0 18px 18px; border: 1px solid var(--line); border-radius: 10px; }
.feature-large { grid-row: span 2; }
.feature-connect { align-self: stretch; }
.feature-privacy { padding: 40px; border-color: rgba(52, 211, 153, 0.28); background: linear-gradient(135deg, rgba(17, 26, 46, 0.9), rgba(20, 46, 52, 0.65)); }
.text-link { display: inline-flex; gap: 8px; margin-top: 18px; color: var(--signal); font-weight: 650; }

.connect { border-top: 1px solid var(--line); }
.link-rail { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.link-rail li { position: relative; display: grid; grid-template-columns: 120px 1fr; gap: 38px; padding: 42px 0; border-bottom: 1px solid var(--line); }
.rail-node { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid var(--line-bright); border-radius: 50%; color: var(--signal); font-family: var(--mono); font-size: 0.75rem; }
.link-rail h3 { margin: 4px 0 12px; }
.link-rail p { max-width: 760px; margin-bottom: 0; }
.inline-note { max-width: 770px; margin: 34px 0 0 158px; padding-left: 18px; border-left: 2px solid var(--trace); }
.inline-note strong { color: var(--ink); }

.compatibility { border-top: 1px solid var(--line); }
.package-table { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.package-row { min-height: 68px; padding: 16px 24px; display: grid; grid-template-columns: 1.4fr 1fr 0.65fr; align-items: center; border-bottom: 1px solid var(--line); }
.package-row:last-child { border-bottom: 0; }
.package-head { min-height: 48px; color: var(--quiet); background: rgba(17, 26, 46, 0.72); font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; }
.package-row span { color: var(--muted); }
.status { width: fit-content; padding: 5px 9px; border-radius: 99px; font-family: var(--mono); font-size: 0.7rem; }
.status.beta { color: var(--trace); background: rgba(52, 211, 153, 0.1); }
.status.planned { color: var(--muted); background: rgba(148, 163, 184, 0.1); }
.limitations { margin-top: 28px; padding: 34px; border-left: 2px solid var(--signal); background: rgba(17, 26, 46, 0.55); }
.limitations h3 { margin-bottom: 12px; }
.limitations p { max-width: 900px; }

.guide-section { border-top: 1px solid var(--line); }
.guide-links { display: grid; grid-template-columns: 1.16fr 0.84fr; gap: 18px; }
.guide-link { min-height: 350px; padding: 44px; display: flex; flex-direction: column; justify-content: flex-end; border: 1px solid var(--line); border-radius: 18px; background: rgba(17, 26, 46, 0.74); transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease; }
.guide-link:first-child { background: linear-gradient(145deg, rgba(37, 99, 235, 0.18), rgba(17, 26, 46, 0.78) 58%); }
.guide-link:hover { transform: translateY(-3px); border-color: var(--line-bright); }
.guide-link h3 { max-width: 630px; margin: 16px 0; font-size: clamp(1.75rem, 3vw, 3rem); }
.guide-link p { max-width: 620px; }
.guide-link strong { margin-top: 20px; color: var(--signal); }

.article-page { width: var(--page); margin: 0 auto; }
.breadcrumbs { padding: 32px 0 0; color: var(--quiet); font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }
.breadcrumbs a { color: var(--signal); }
.article-hero { padding: 92px 0 86px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr); gap: 70px; align-items: end; border-bottom: 1px solid var(--line); }
.article-hero h1 { max-width: 900px; font-size: clamp(3.2rem, 6.8vw, 6.4rem); }
.article-hero .hero-summary { margin-bottom: 0; }
.article-signal { padding: 32px; border: 1px solid var(--line-bright); border-radius: 16px; background: rgba(17, 26, 46, 0.78); }
.article-signal strong { display: block; margin: 12px 0; font-family: var(--display); font-size: 1.45rem; line-height: 1.2; }
.article-signal p { margin-bottom: 0; font-size: 0.9rem; }
.article-layout { padding: 100px 0 140px; display: grid; grid-template-columns: 250px minmax(0, 780px); gap: 80px; justify-content: center; }
.article-nav { position: sticky; top: 104px; align-self: start; display: grid; gap: 12px; color: var(--muted); font-size: 0.86rem; }
.article-nav span { margin-bottom: 8px; color: var(--quiet); font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; }
.article-nav a:hover { color: var(--signal); }
.prose section { padding: 0 0 76px; scroll-margin-top: 100px; }
.prose section + section { padding-top: 76px; border-top: 1px solid var(--line); }
.prose h2 { font-size: clamp(2rem, 4vw, 3.6rem); }
.prose h3 { margin-top: 38px; line-height: 1.15; }
.prose p, .prose li { font-size: 1.03rem; }
.prose ul, .prose ol { padding-left: 22px; color: var(--muted); }
.prose li { margin-bottom: 12px; padding-left: 7px; }
.answer-box { margin: 28px 0 40px; padding: 26px 28px; border-left: 2px solid var(--trace); background: rgba(17, 26, 46, 0.66); }
.answer-box p { margin: 0; color: var(--ink); }
.comparison { margin-top: 32px; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.comparison-row { padding: 18px 20px; display: grid; grid-template-columns: 1fr 1.35fr 1.35fr; gap: 20px; border-bottom: 1px solid var(--line); }
.comparison-row:last-child { border-bottom: 0; }
.comparison-row:first-child { color: var(--quiet); background: rgba(17, 26, 46, 0.8); font-family: var(--mono); font-size: 0.67rem; letter-spacing: 0.1em; text-transform: uppercase; }
.article-cta { padding: 42px; border: 1px solid var(--line-bright); border-radius: 18px; background: linear-gradient(125deg, rgba(37, 99, 235, 0.16), rgba(17, 26, 46, 0.76)); }
.article-cta h2 { font-size: clamp(2rem, 4vw, 3.3rem); }

.faq { border-top: 1px solid var(--line); }
.faq-list { max-width: 920px; margin-left: auto; }
details { border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 27px 48px 27px 0; cursor: pointer; font-family: var(--display); font-size: 1.25rem; font-weight: 580; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; color: var(--signal); font-family: var(--mono); font-size: 1.4rem; font-weight: 400; }
details[open] summary::after { content: "-"; }
details p { max-width: 760px; padding: 0 0 28px; margin-bottom: 0; }

.download { width: var(--page); margin: 0 auto 64px; padding: 70px; display: flex; align-items: flex-end; justify-content: space-between; gap: 54px; border: 1px solid var(--line-bright); border-radius: 20px; background: linear-gradient(115deg, rgba(37, 99, 235, 0.17), rgba(17, 26, 46, 0.84) 52%, rgba(52, 211, 153, 0.08)); }
.download h2 { max-width: 680px; font-size: clamp(2.2rem, 4.6vw, 4.6rem); }
.download p:not(.section-index) { max-width: 650px; margin-bottom: 0; }
.download .actions { flex-shrink: 0; }

footer { width: var(--page); margin: 0 auto; padding: 42px 0 54px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; border-top: 1px solid var(--line); }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand span { color: var(--quiet); font-family: var(--body); font-size: 0.75rem; }
footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 22px; color: var(--muted); font-size: 0.82rem; }
.legal { grid-column: 1 / -1; margin: 0; color: var(--quiet); font-size: 0.72rem; }

.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 650ms ease, transform 650ms ease; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 76px; }
  .hero-copy { max-width: 850px; }
  .hero-visual { width: min(980px, 100%); margin: 0; transform: none; }
  .section-intro { grid-template-columns: 0.3fr 1.15fr; }
  .section-intro > p:last-child { grid-column: 2; }
  .feature-grid { grid-template-columns: 1fr; }
  .guide-links { grid-template-columns: 1fr; }
  .feature-large { grid-row: auto; }
  .feature img { max-height: 620px; object-fit: cover; object-position: top; }
  .download { align-items: flex-start; flex-direction: column; }
  .article-hero { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-nav { position: static; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
}

@media (max-width: 760px) {
  :root { --page: calc(100vw - 32px); }
  .site-header { min-height: 64px; padding: 10px 16px; grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .hero { padding: 62px 0 58px; gap: 44px; }
  h1 { font-size: clamp(3rem, 15vw, 4.7rem); }
  .hero-visual { padding: 7px; border-radius: 12px; }
  .window-bar { height: 28px; }
  .fact-strip { grid-template-columns: 1fr 1fr; }
  .fact-strip > div { padding: 18px; }
  .fact-strip > div:nth-child(2) { border-right: 0; }
  .fact-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section { padding: 100px 0; }
  .section-intro, .section-intro.compact { grid-template-columns: 1fr; gap: 14px; margin-bottom: 46px; }
  .section-intro > p:last-child { grid-column: auto; }
  .feature-copy, .feature-privacy { padding: 28px; }
  .feature img { width: calc(100% - 20px); margin: 0 10px 10px; }
  .link-rail li { grid-template-columns: 56px 1fr; gap: 18px; padding: 32px 0; }
  .rail-node { width: 42px; height: 42px; }
  .inline-note { margin-left: 74px; }
  .package-row { grid-template-columns: 1fr auto; gap: 3px 16px; padding: 16px 18px; }
  .package-row > :nth-child(2) { grid-column: 1; grid-row: 2; }
  .package-row > :nth-child(3) { grid-column: 2; grid-row: 1 / span 2; }
  .package-head { display: none; }
  .download { padding: 42px 28px; }
  .guide-link { min-height: 310px; padding: 30px; }
  .article-hero { padding: 68px 0 64px; gap: 38px; }
  .article-hero h1 { font-size: clamp(3rem, 14vw, 4.7rem); }
  .article-layout { padding: 70px 0 100px; gap: 48px; }
  .prose section { padding-bottom: 58px; }
  .prose section + section { padding-top: 58px; }
  .comparison-row { grid-template-columns: 1fr; gap: 5px; }
  .comparison-row:first-child { display: none; }
  .comparison-row strong { color: var(--signal); }
  .article-cta { padding: 30px; }
  footer { grid-template-columns: 1fr; }
  footer nav { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}