@font-face {
  font-family: Inter;
  src: url('/assets/fonts/InterVariable.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #0b1120;
  --surface: #111827;
  --deep: #020617;
  --border: #283345;
  --ink: #f1f5f9;
  --text: #e2e8f0;
  --muted: #a1aec0;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-text: #a5b4fc;
  --accent-soft: #22234a;
  --radius: 8px;
  --radius-large: 12px;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 92px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 1.0625rem/1.6 Inter, system-ui, sans-serif; }
h1, h2, h3, p, figure, ul { margin: 0; }
h1, h2, h3 { color: var(--ink); letter-spacing: -.025em; }
h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1.1; font-weight: 800; }
h2 { font-size: clamp(1.875rem, 3.6vw, 2.5rem); line-height: 1.18; font-weight: 750; }
h3 { font-size: 1.25rem; line-height: 1.3; }
p { color: var(--muted); }
em { color: var(--accent-text); font-style: normal; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
button { padding: 0; border: 0; background: none; cursor: pointer; }
svg { display: block; }
img { display: block; width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 4px; }
.container { width: 100%; max-width: 1140px; padding-inline: 1.5rem; margin-inline: auto; }
.section { padding-block: 5rem; }
.eyebrow, .small-kicker {
  display: inline-block;
  color: var(--accent-text);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.eyebrow + h2, .small-kicker + h3 { margin-top: .65rem; }
.text-link { display: inline-flex; align-items: baseline; gap: .5rem; color: var(--accent-text); font-size: .92rem; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: .22em; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: .65rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: white;
  padding: .8rem 1.55rem;
  font-size: .92rem;
  font-weight: 650;
  line-height: 1.4;
  text-align: center;
  transition: background .16s ease;
}
.button:hover { background: var(--accent-hover); }
.button-light { background: white; color: #3730a3; }
.button-light:hover { background: #e0e7ff; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; z-index: 10; top: .75rem; left: .75rem; transform: translateY(-180%); background: var(--accent); color: white; padding: .75rem; border-radius: var(--radius); }
.skip-link:focus { transform: none; }
.status-dot { display: inline-block; width: .45rem; height: .45rem; background: #86efac; border-radius: 50%; flex: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  background: rgb(11 17 32 / 94%);
  backdrop-filter: blur(8px);
}
.header-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.brand { color: var(--ink); font-size: 1.25rem; font-weight: 800; letter-spacing: -.025em; }
.desktop-nav, .site-footer nav { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem 2rem; color: var(--muted); font-size: .92rem; }
:is(.desktop-nav, .mobile-nav, .site-footer nav) :is(a, button):hover,
:is(.desktop-nav, .mobile-nav, .site-footer nav) [aria-current] { color: var(--ink); }
.menu-button, .mobile-nav { display: none; }
.site-footer { padding-block: 2.5rem; border-top: 1px solid var(--border); text-align: center; }
.site-footer nav { justify-content: center; }
.site-footer p { margin-top: 1rem; font-size: .85rem; }

.hero, .page-intro { text-align: center; }
.hero { padding-block: 4.25rem 4.75rem; }
.hero h1 { max-width: 730px; margin-inline: auto; }
.hero p, .page-intro p { max-width: 640px; margin: 1.5rem auto 0; font-size: clamp(1.05rem, 2.4vw, 1.2rem); }
.hero .button { margin-top: 2rem; }
.hero-photo img, .feature-row img, .platform-overview img {
  border-radius: var(--radius-large);
  object-fit: cover;
  background: var(--surface);
}
.hero-photo img { aspect-ratio: 16 / 9; }
.protocol-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 4rem;
  padding: 2rem .75rem;
  border-block: 1px solid var(--border);
  text-align: center;
  list-style: none;
}
.protocol-strip strong, .protocol-strip span { display: block; }
.protocol-strip strong { color: var(--accent-text); font-size: clamp(1.25rem, 3.2vw, 2rem); letter-spacing: -.03em; }
.protocol-strip span { color: var(--muted); font-size: .88rem; }

.feature-row, .platform-overview, .platform-pillar, .dev-layout, .faq-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 4rem);
}
.feature-row { margin-block: 5rem; }
.feature-row.is-reverse > figure { order: -1; }
.feature-row img, .platform-overview img { aspect-ratio: 4 / 3; }
.feature-row p, .platform-overview p, .platform-pillar-title p, .dev-content > p, .faq-section > div > p { margin-top: 1rem; }
.feature-row .button { margin-top: 1.5rem; }
.page-intro { padding-block: 4.75rem 3.75rem; }
.page-intro h1 { margin-top: .75rem; }
.cta-wrap { margin-block: 0 5rem; }
.cta {
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 2.5rem);
  border-radius: var(--radius-large);
  background: linear-gradient(135deg, #4338ca, #312e81);
  text-align: center;
}
.cta p { margin: .85rem auto 1.5rem; color: #e0e7ff; }

.showcase-section { padding-block: 4rem; border-block: 1px solid var(--border); background: var(--surface); }
.section-top { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; }
.showcase { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: center; gap: clamp(1.5rem, 4vw, 3rem); }
.use-tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.5rem; }
.use-tabs button, .code-tabs button {
  padding: .45rem .7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .8rem;
}
:is(.use-tabs, .code-tabs) button[aria-selected='true'] { border-color: #7771ec; background: var(--accent-soft); color: var(--ink); }
:is(.use-tabs, .code-tabs) button:hover { color: var(--ink); }
.showcase-copy p { margin-top: .65rem; font-size: .94rem; }
.check-list { display: grid; gap: .5rem; margin: 1rem 0; padding: 0; list-style: none; font-size: .92rem; }
.check-list li { display: flex; align-items: baseline; gap: .6rem; }
.check-list li::before { content: '✓'; color: var(--accent-text); }
.concept-note { color: var(--muted); font-size: .8rem; }

.dashboard-preview {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--bg);
  font-size: .72rem;
}
.dash-sidebar { display: flex; flex-direction: column; align-items: center; gap: .55rem; padding: .9rem 0; border-right: 1px solid var(--border); color: var(--accent-text); }
.dash-sidebar > svg { width: 1.25rem; margin-bottom: .45rem; }
.dash-nav, .dash-avatar { display: grid; place-items: center; width: 1.8rem; height: 1.8rem; border-radius: .4rem; }
.dash-nav svg { width: 1rem; }
.dash-nav.active, .dash-avatar { background: var(--accent-soft); }
.dash-avatar { margin-top: auto; font-weight: 700; }
.dash-main { min-width: 0; padding: .85rem; }
.dash-top, .dash-heading, .dash-chart > div { display: flex; align-items: center; justify-content: space-between; gap: .4rem; }
.dash-top, .dash-chart span, .device-list-head { color: var(--muted); }
.preview-label, .live-chip { padding: .15rem .35rem; border: 1px solid var(--border); border-radius: .3rem; white-space: nowrap; }
.live-chip { display: inline-flex; align-items: center; gap: .3rem; }
.dash-heading, .dash-metrics, .dash-chart, .device-list { margin-top: .75rem; }
.dash-heading h3 { font-size: 1rem; }
.dash-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .4rem; }
.dash-metrics > div, .dash-chart, .device-list { padding: .55rem; border: 1px solid var(--border); border-radius: .4rem; background: var(--surface); }
.dash-metrics span { display: block; color: var(--muted); }
.dash-metrics strong { font-size: 1rem; }
.dash-metrics small { color: var(--muted); font-size: .6rem; }
.dash-metrics .amber { color: #fcd34d; }
.metric-note { font-size: .64rem; }
.chart { width: 100%; height: 6rem; margin-top: .35rem; }
.chart-labels { font-size: .62rem; }
.device-list > div { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) auto; align-items: baseline; gap: .4rem; padding: .3rem .1rem; }
.device-list > div + div { border-top: 1px solid var(--border); }
.device-list b { overflow-wrap: anywhere; }
.device-list small { display: block; color: var(--muted); }
.online { color: #86efac; white-space: nowrap; }

.faq-section { align-items: start; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
.faq-list { border-top: 1px solid var(--border); }
.faq-list details { padding: .95rem 0; border-bottom: 1px solid var(--border); }
.faq-list summary { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; list-style: none; cursor: pointer; font-weight: 650; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--accent-text); }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list p { margin-top: .65rem; font-size: .94rem; }

.platform-overview { margin-bottom: 4rem; }
.inline-status { display: inline-flex; align-items: center; gap: .5rem; margin-top: 1.25rem; color: var(--muted); font-size: .85rem; }
.platform-pillar { padding-block: 2.25rem; border-top: 1px solid var(--border); }
.platform-pillar-list, .dev-principles { margin-bottom: 3rem; }
.capability-card, .solution-card, .dev-principles article, .docs-note {
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--surface);
  padding: 1.5rem;
}
.icon-box { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; margin-bottom: .85rem; border-radius: var(--radius); background: var(--accent-soft); color: var(--accent-text); }
.icon-box svg, .docs-note svg { width: 1.25rem; flex: none; }

.solution-grid, .dev-principles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
.solution-card { padding: 0; overflow: hidden; }
.solution-illustration { display: grid; place-items: center; min-height: 9rem; background: radial-gradient(ellipse at center, #292652, #151c32 70%); border-bottom: 1px solid var(--border); }
.solution-symbol { display: grid; place-items: center; width: 3.5rem; height: 3.5rem; color: var(--accent-text); border: 1px solid #6b62c5; border-radius: var(--radius); background: var(--bg); }
.solution-symbol svg { width: 1.9rem; }
.solution-card-copy { padding: 1.5rem; }
.solution-card-copy h2 { font-size: 1.5rem; }
.solution-card-copy p { margin: .65rem 0 .9rem; }
.examples { display: block; margin-bottom: .85rem; color: var(--muted); font-size: .82rem; }
.centered { text-align: center; }
.centered p { margin: 1rem 0 1.5rem; }

.dev-layout { align-items: start; }
.developer-steps { margin-top: 1.25rem; }
.developer-steps > div { display: flex; gap: .85rem; padding: .75rem 0; border-top: 1px solid var(--border); }
.developer-steps > div > span { color: var(--accent-text); font: .8rem/1.6 var(--mono); }
.developer-steps h3 { font-size: 1rem; }
.developer-steps p, .docs-note p { margin-top: .3rem; font-size: .9rem; }
.code-window { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-large); background: var(--deep); }
.window-bar, .code-bottom { display: flex; justify-content: space-between; align-items: center; gap: .65rem; padding: .75rem 1rem; background: var(--surface); color: var(--muted); font: .72rem/1.5 var(--mono); }
.window-bar i { display: inline-block; width: .38rem; height: .38rem; margin-right: .2rem; border-radius: 50%; background: var(--accent-text); }
.code-tabs { display: flex; gap: .4rem; padding: .8rem 1rem 0; }
.code-window pre { min-height: 13rem; margin: 0; padding: 1rem; overflow: auto; font: .78rem/1.65 var(--mono); }
.code-window code { font: inherit; }
.code-comment { color: var(--muted); }
.copy-code { color: var(--accent-text); }
.copy-code:hover { text-decoration: underline; }
.docs-note { display: flex; align-items: start; gap: .75rem; margin-top: 1rem; padding: 1rem; }
.docs-note svg { margin-top: .1rem; color: var(--accent-text); }
.docs-note h3 { font-size: 1rem; }
.dev-principles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dev-principles h3 { margin: .5rem 0; }
.dev-principles p { font-size: .9rem; }
.error-page { min-height: 55vh; }

dialog {
  width: min(100% - 2rem, 34rem);
  max-height: calc(100% - 2rem);
  overflow: auto;
  padding: clamp(1.2rem, 5vw, 2rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--surface);
  color: var(--text);
}
dialog::backdrop { background: rgb(2 6 23 / 78%); }
.dialog-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.dialog-close { display: grid; place-items: center; width: 2rem; height: 2rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1.4rem; line-height: 1; }
.dialog-close:hover { background: var(--accent-soft); }
dialog h2 { margin-block: .45rem; font-size: clamp(1.65rem, 5vw, 2.15rem); }
dialog form { display: grid; gap: .8rem; margin-top: 1rem; }
dialog label { display: grid; gap: .25rem; font-size: .9rem; font-weight: 600; }
dialog input, dialog textarea { width: 100%; padding: .55rem .65rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); font-weight: 400; }
dialog textarea { resize: vertical; }
dialog .button { justify-self: start; }
.form-preview-note, .form-result { font-size: .82rem; }
.form-result { color: var(--accent-text); }

@media (max-width: 850px) {
  .showcase, .dev-layout { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 680px) {
  .container { padding-inline: 1rem; }
  .site-header { padding-block: .8rem; }
  .desktop-nav { display: none; }
  .menu-button { display: grid; place-content: center; gap: .3rem; width: 2.65rem; height: 2.65rem; border: 1px solid var(--border); border-radius: var(--radius); }
  .menu-button span { display: block; width: 1rem; height: 2px; background: var(--text); }
  .mobile-nav { display: grid; gap: .35rem; margin-top: .7rem; color: var(--muted); }
  .mobile-nav :is(a, button) { padding: .45rem 0; text-align: left; }
  .hero, .page-intro { padding-block: 3.25rem 2.25rem; }
  .hero p, .page-intro p { margin-top: 1rem; }
  .hero .button { margin-top: 1.4rem; }
  .section, .showcase-section { padding-block: 3rem; }
  .feature-row, .platform-overview, .cta-wrap { margin-block: 3rem; }
  .feature-row, .platform-overview, .platform-pillar, .faq-section, .solution-grid, .dev-principles { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .feature-row.is-reverse > figure { order: 0; }
  .protocol-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 2rem; }
  .section-top { flex-direction: column; align-items: start; }
}

@media (max-width: 410px) {
  .dashboard-preview { grid-template-columns: minmax(0, 1fr); }
  .dash-sidebar { display: none; }
  .dash-main { padding: .6rem; }
}