:root {
  --bg: oklch(98.2% 0.008 85);
  --surface: oklch(100% 0 0);
  --fg: oklch(21% 0.016 70);
  --muted: oklch(50% 0.014 70);
  --border: oklch(90.5% 0.01 85);
  --accent: oklch(57% 0.14 45);
  --ok: oklch(50% 0.12 152);
  --accent-soft: color-mix(in oklch, var(--accent) 13%, transparent);
  --fg-soft: color-mix(in oklch, var(--fg) 5%, transparent);
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  --fs-h1: 64px;
  --fs-h2: 46px;
  --fs-h3: 22px;
  --fs-lead: 18px;
  --fs-body: 16px;
  --fs-meta: 13px;
  --gap-xs: 8px;
  --gap-sm: 12px;
  --gap-md: 20px;
  --gap-lg: 32px;
  --gap-xl: 56px;
  --gap-2xl: 96px;
  --container: 1140px;
  --gutter: 32px;
  --radius: 8px;
  --radius-lg: 8px;
}

:root[data-theme="dark"] {
  --bg: oklch(18.5% 0.012 70);
  --surface: oklch(23.5% 0.014 70);
  --fg: oklch(94% 0.01 85);
  --muted: oklch(74% 0.012 75);
  --border: oklch(31% 0.014 72);
  --accent: oklch(72% 0.12 45);
  --ok: oklch(75% 0.12 152);
  --accent-soft: color-mix(in oklch, var(--accent) 18%, transparent);
  --fg-soft: color-mix(in oklch, var(--fg) 7%, transparent);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; }
code {
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.skip-link {
  position: fixed;
  z-index: 40;
  top: -80px;
  left: 20px;
  padding: 10px 14px;
  background: var(--accent);
  color: var(--surface);
  border-radius: 999px;
  transition: top 0.18s ease;
}
.skip-link:focus { top: 18px; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(56px, 7.5vw, 104px); }
.section + .section { border-top: 1px solid var(--border); }
section[id] { scroll-margin-top: 78px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }

h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: var(--gap-md);
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 650;
}
.hero-emphasis {
  color: var(--accent);
}
h2 {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: 1.14;
  letter-spacing: 0;
  font-weight: 650;
}
h3 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
}
.lead {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: var(--fs-lead);
  line-height: 1.65;
}
.eyebrow {
  margin: 0 0 var(--gap-md);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.meta, .num {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  font-variant-numeric: tabular-nums;
}
.section-head { max-width: 68ch; margin-bottom: clamp(36px, 6vw, 60px); }
.section-head .lead { margin-top: 14px; }

.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklch, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  min-height: 70px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: transparent;
  box-shadow: none;
}
.brand-mark img {
  width: 38px;
  height: 38px;
  border-radius: inherit;
  object-fit: contain;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 17px;
  letter-spacing: 0;
}
.topnav nav {
  display: flex;
  gap: clamp(18px, 2.4vw, 34px);
  margin-inline: auto;
}
.topnav nav a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.15s ease;
}
.topnav nav a:hover,
.topnav nav a:focus-visible { color: var(--fg); }
.nav-actions { display: inline-flex; align-items: center; gap: 10px; }
.lang-link {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  min-height: 40px;
  padding-inline: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--surface) 74%, transparent);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.lang-link:hover,
.lang-link:focus-visible {
  border-color: color-mix(in oklch, var(--accent) 54%, var(--border));
  background: var(--accent-soft);
  color: var(--fg);
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  min-height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg);
}
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .theme-icon-dark { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-dark { display: block; }
.hamburger {
  display: none;
  padding: 8px;
  border: 0;
  background: transparent;
  color: var(--fg);
}
.hamburger svg { width: 20px; height: 20px; }
.mobile-menu { display: none; }
.mobile-menu.open {
  display: flex;
  flex-direction: column;
  padding: 6px var(--gutter) 22px;
  border-top: 1px solid var(--border);
}
.mobile-menu a {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
  font-size: 15px;
}
.mobile-menu .btn { justify-content: center; margin-top: 18px; border-bottom: 0; }
.theme-toggle-mobile { width: 100%; margin-top: 18px; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 560;
  letter-spacing: 0;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--surface);
}
.btn-primary:hover,
.btn-primary:focus-visible { background: color-mix(in oklch, var(--accent) 88%, black); }
.btn-secondary {
  border-color: var(--border);
  background: transparent;
  color: var(--fg);
}
.btn-secondary:hover,
.btn-secondary:focus-visible { border-color: var(--fg); }
.btn-ghost {
  padding-inline: 6px;
  border-color: transparent;
  background: transparent;
  color: var(--fg);
}
.btn-ghost:hover,
.btn-ghost:focus-visible { color: var(--accent); }
.nav-cta-icon {
  min-width: 54px;
  justify-content: center;
  padding-inline: 16px;
}
.github-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}
.text-link:hover,
.text-link:focus-visible { color: var(--fg); }

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.hero {
  position: relative;
  padding-block: clamp(72px, 10vw, 138px);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(56% 46% at 18% 6%, color-mix(in oklch, var(--accent) 9%, transparent), transparent 72%),
    radial-gradient(44% 40% at 96% 4%, color-mix(in oklch, var(--accent) 7%, transparent), transparent 70%);
}
.hero .container { position: relative; }
.hero-split {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: clamp(42px, 6vw, 80px);
}
.hero-copy .lead { margin-bottom: var(--gap-lg); }
.hero-cta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12.5px;
}

.demo-card {
  position: relative;
  overflow: hidden;
  width: min(420px, 100%);
  margin-inline: auto;
  border: 1px solid color-mix(in oklch, var(--fg) 16%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in oklch, var(--fg) 97%, transparent);
  box-shadow: 22px 22px 0 color-mix(in oklch, var(--accent) 10%, transparent);
}
.demo-video-frame {
  aspect-ratio: 3 / 4;
  background: color-mix(in oklch, var(--fg) 95%, black);
}
.demo-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.demo-version-switch {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid color-mix(in oklch, var(--surface) 70%, transparent);
  border-radius: 999px;
  background: color-mix(in oklch, var(--fg) 16%, transparent);
  color: var(--surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.demo-version-btn {
  min-width: 48px;
  min-height: 30px;
  padding: 4px 11px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: color-mix(in oklch, var(--surface) 74%, transparent);
  font-size: 12px;
  font-weight: 620;
  line-height: 1;
  transition: background 0.15s ease, color 0.15s ease;
}
.demo-version-btn:hover,
.demo-version-btn:focus-visible {
  color: var(--surface);
}
.demo-version-btn.is-active {
  background: color-mix(in oklch, var(--surface) 92%, transparent);
  color: color-mix(in oklch, var(--fg) 90%, black);
}
.demo-control-btn {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid color-mix(in oklch, var(--bg) 18%, transparent);
  border-radius: 999px;
  background: color-mix(in oklch, var(--bg) 8%, transparent);
  color: color-mix(in oklch, var(--bg) 86%, transparent);
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.demo-control-btn:hover,
.demo-control-btn:focus-visible {
  border-color: color-mix(in oklch, var(--bg) 34%, transparent);
  background: color-mix(in oklch, var(--bg) 14%, transparent);
  color: var(--bg);
}
.demo-audio-icon,
.demo-play-icon {
  width: 18px;
  height: 18px;
}
.demo-audio-icon-live { display: none; }
.demo-card.is-audio-on .demo-audio-icon-muted { display: none; }
.demo-card.is-audio-on .demo-audio-icon-live { display: block; }
.demo-play-icon-play { display: none; }
.demo-card.is-paused .demo-play-icon-play { display: block; }
.demo-card.is-paused .demo-play-icon-pause { display: none; }
.demo-meta {
  display: grid;
  gap: 12px;
  padding: 12px 14px 14px;
  border-top: 1px solid color-mix(in oklch, var(--bg) 18%, transparent);
  color: color-mix(in oklch, var(--bg) 66%, transparent);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
}
.demo-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
}
.demo-meta-row span:last-child {
  color: color-mix(in oklch, var(--bg) 86%, transparent);
}
.demo-controls {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}
.demo-progress {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 18px;
  margin: 0;
  background: transparent;
  accent-color: color-mix(in oklch, var(--accent) 86%, white);
  cursor: pointer;
}
.demo-progress::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    color-mix(in oklch, var(--accent) 86%, white) 0%,
    color-mix(in oklch, var(--accent) 86%, white) var(--demo-progress, 0%),
    color-mix(in oklch, var(--bg) 18%, transparent) var(--demo-progress, 0%),
    color-mix(in oklch, var(--bg) 18%, transparent) 100%
  );
}
.demo-progress::-webkit-slider-thumb {
  width: 12px;
  height: 12px;
  margin-top: -4px;
  border: 2px solid var(--bg);
  border-radius: 50%;
  background: var(--accent);
  -webkit-appearance: none;
  appearance: none;
}
.demo-progress::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: color-mix(in oklch, var(--bg) 18%, transparent);
}
.demo-progress::-moz-range-progress {
  height: 4px;
  border-radius: 999px;
  background: color-mix(in oklch, var(--accent) 86%, white);
}
.demo-progress::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border: 2px solid var(--bg);
  border-radius: 50%;
  background: var(--accent);
}

.signal-band {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklch, var(--fg) 4%, var(--bg));
}
.signal-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.signal-kicker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  white-space: nowrap;
}
.signal-line {
  width: 56px;
  height: 1px;
  background: var(--accent);
}
.signal-copy { color: var(--muted); font-size: 14px; }

.workflow-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(48% 38% at 82% 8%, color-mix(in oklch, var(--accent) 7%, transparent), transparent 72%),
    var(--bg);
}
.workflow-stage {
  position: relative;
  overflow: hidden;
  padding: 22px;
  border: 1px solid color-mix(in oklch, var(--fg) 13%, transparent);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--surface) 84%, transparent), color-mix(in oklch, var(--fg) 3%, transparent)),
    var(--surface);
  box-shadow: 18px 18px 0 color-mix(in oklch, var(--accent) 8%, transparent);
}
.workflow-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--border) 38%, transparent) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in oklch, var(--border) 30%, transparent) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(circle at 72% 24%, black, transparent 70%);
  opacity: 0.35;
}
.workflow-stage-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  margin-bottom: 22px;
}
.workflow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid color-mix(in oklch, var(--accent) 42%, var(--border));
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.workflow-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px color-mix(in oklch, var(--accent) 18%, transparent);
}
.workflow-stage-note {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
}
.flow-graph {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px minmax(0, 1.26fr) 64px minmax(0, 0.9fr);
  gap: 0;
  align-items: center;
}
.flow-lane {
  position: relative;
  display: grid;
  gap: 12px;
  min-width: 0;
}
.flow-lane-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.flow-card,
.flow-process,
.flow-result-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--surface) 88%, var(--bg));
}
.flow-card {
  position: relative;
  overflow: hidden;
  min-height: 136px;
  padding: 16px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.flow-card::before,
.flow-result-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(150px 100px at 100% 0%, color-mix(in oklch, var(--accent) 11%, transparent), transparent 68%);
  opacity: 0;
  transition: opacity 0.18s ease;
}
.flow-card:hover,
.flow-result-card:hover,
.flow-card.is-active,
.flow-result-card.is-active {
  transform: translateY(-4px);
  border-color: color-mix(in oklch, var(--accent) 48%, var(--border));
  background: color-mix(in oklch, var(--accent) 6%, var(--surface));
  box-shadow: 0 18px 34px color-mix(in oklch, var(--fg) 9%, transparent);
}
.flow-card:hover::before,
.flow-result-card:hover::before,
.flow-card.is-active::before,
.flow-result-card.is-active::before { opacity: 1; }
.workflow-stage[data-flow-autoplay="running"] [data-flow-target].is-active::after {
  content: "";
  position: absolute;
  inset: -1px;
  border: 1px solid color-mix(in oklch, var(--accent) 62%, transparent);
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  animation: workflow-auto-ring 2.4s ease-out infinite;
}
.flow-card-kicker,
.flow-process-num,
.flow-result-files span {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.flow-card h3,
.flow-process h3,
.flow-result-card h3 {
  position: relative;
  z-index: 1;
  margin: 10px 0 8px;
  font-size: 18px;
}
.flow-card p,
.flow-process p,
.flow-result-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
}
.flow-card code {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-top: 14px;
  padding: 5px 8px;
  border: 1px solid color-mix(in oklch, var(--accent) 34%, var(--border));
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
}
.flow-junction {
  position: relative;
  display: grid;
  place-items: center;
  align-self: stretch;
  min-height: 210px;
}
.flow-junction::before,
.flow-junction::after,
.flow-junction span::before {
  content: "";
  position: absolute;
  background: color-mix(in oklch, var(--accent) 42%, var(--border));
}
.flow-junction::before {
  display: none;
  left: 0;
  right: 50%;
  top: 33%;
  height: 1px;
  transform: rotate(18deg);
  transform-origin: right center;
}
.flow-junction::after {
  display: none;
  left: 0;
  right: 50%;
  bottom: 33%;
  height: 1px;
  transform: rotate(-18deg);
  transform-origin: right center;
}
.flow-junction span {
  position: relative;
  width: 12px;
  height: 12px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 0 0 8px color-mix(in oklch, var(--accent) 10%, transparent);
}
.flow-junction span::before {
  left: 11px;
  top: 50%;
  width: 42px;
  height: 1px;
}
.flow-junction-result {
  min-height: 150px;
}
.flow-junction-result::before,
.flow-junction-result::after {
  display: none;
}
.flow-junction-result span::after {
  content: "";
  position: absolute;
  right: -45px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  transform: translateY(-50%) rotate(45deg);
}
.flow-process {
  position: relative;
  list-style: none;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 10px;
}
.flow-process li {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: calc(var(--radius) - 6px);
  transition: background 0.18s ease, box-shadow 0.18s ease;
}
.flow-process li + li {
  border-top: 1px solid color-mix(in oklch, var(--border) 70%, transparent);
}
.flow-process-num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid color-mix(in oklch, var(--accent) 36%, var(--border));
  border-radius: 50%;
  background: var(--surface);
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.flow-process li.is-active {
  background: color-mix(in oklch, var(--accent) 7%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--accent) 24%, transparent);
}
.flow-process li.is-active .flow-process-num {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: 0 0 0 8px color-mix(in oklch, var(--accent) 10%, transparent);
}
.flow-process h3 { margin-top: 0; }
.flow-result-card {
  position: relative;
  overflow: hidden;
  min-height: 238px;
  padding: 18px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.flow-result-mark {
  position: relative;
  z-index: 1;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
}
.flow-result-files {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 8px;
  margin-top: 20px;
}
.flow-result-files span {
  display: block;
  padding: 8px 10px;
  border: 1px solid color-mix(in oklch, var(--border) 82%, transparent);
  border-radius: 999px;
  background: color-mix(in oklch, var(--fg) 3%, transparent);
  color: var(--muted);
  text-transform: none;
}

@keyframes workflow-auto-ring {
  0% {
    opacity: 0.72;
    transform: scale(1);
  }
  70%, 100% {
    opacity: 0;
    transform: scale(1.035);
  }
}

.architecture-section {
  overflow: hidden;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--accent) 5%, transparent), transparent 42%),
    var(--bg);
}
.architecture-lab {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: 18px;
  align-items: stretch;
  padding: 18px;
  border: 1px solid color-mix(in oklch, var(--fg) 14%, transparent);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 18% 16%, color-mix(in oklch, var(--accent) 12%, transparent), transparent 30%),
    linear-gradient(135deg, color-mix(in oklch, var(--accent) 6%, transparent), transparent 42%),
    var(--surface);
  box-shadow: 18px 18px 0 color-mix(in oklch, var(--accent) 9%, transparent);
}
.arch-map {
  position: relative;
  display: grid;
  gap: 16px;
  min-width: 0;
  padding: 16px;
  border: 1px solid color-mix(in oklch, var(--border) 78%, transparent);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--fg) 2.5%, transparent);
  overflow: hidden;
}
.arch-map::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: calc(var(--radius) - 4px);
  background-image:
    linear-gradient(color-mix(in oklch, var(--fg) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklch, var(--fg) 6%, transparent) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, transparent, #000 16%, #000 84%, transparent);
  pointer-events: none;
}
.arch-map-head,
.arch-plane,
.arch-link-field {
  position: relative;
  z-index: 1;
}
.arch-map-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--muted);
  font-size: 12px;
}
.arch-map-kicker,
.arch-plane-label span,
.arch-stack-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.arch-plane {
  display: grid;
  grid-template-columns: 126px minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
  border: 1px solid color-mix(in oklch, var(--border) 82%, transparent);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--surface) 88%, transparent);
}
.arch-plane-contract {
  background: linear-gradient(180deg, color-mix(in oklch, var(--accent) 8%, var(--surface)), color-mix(in oklch, var(--surface) 90%, transparent));
}
.arch-plane-runtime {
  background: linear-gradient(180deg, color-mix(in oklch, var(--surface) 92%, transparent), color-mix(in oklch, var(--fg) 4%, transparent));
}
.arch-plane-label {
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 0;
}
.arch-plane-label small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}
.arch-boundary-row,
.arch-runtime-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  min-width: 0;
}
.arch-runtime-grid {
  grid-template-columns: 0.92fr 0.92fr 1.26fr 1fr;
  align-items: stretch;
}
.arch-node {
  position: relative;
  display: grid;
  width: 100%;
  min-width: 0;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--bg) 52%, var(--surface));
  color: var(--fg);
  text-align: left;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}
.arch-node:hover,
.arch-node:focus-visible,
.arch-node.is-active {
  border-color: color-mix(in oklch, var(--accent) 56%, var(--border));
  background: color-mix(in oklch, var(--accent) 11%, var(--surface));
  box-shadow: 0 12px 30px color-mix(in oklch, var(--accent) 10%, transparent);
  transform: translateY(-1px);
}
.architecture-lab[data-arch-autoplay="running"] .arch-node.is-active::after {
  content: "";
  position: absolute;
  inset: -1px;
  border: 1px solid color-mix(in oklch, var(--accent) 66%, transparent);
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  animation: arch-auto-ring 3s ease-out infinite;
}
.architecture-lab[data-arch-current="input"] [data-arch-target="input"],
.architecture-lab[data-arch-current="skill"] [data-arch-target="skill"],
.architecture-lab[data-arch-current="contract"] [data-arch-target="contract"],
.architecture-lab[data-arch-current="gateway"] [data-arch-target="gateway"],
.architecture-lab[data-arch-current="backend"] [data-arch-target="backend"],
.architecture-lab[data-arch-current="manifest"] [data-arch-target="manifest"] {
  border-color: var(--accent);
  background: color-mix(in oklch, var(--accent) 14%, var(--surface));
  color: var(--fg);
}
.arch-flow-node {
  align-content: start;
  min-height: 118px;
  padding: 14px;
}
.arch-system-node {
  align-content: center;
  min-height: 126px;
  padding: 14px;
}
.arch-node-num,
.arch-node span:not(.arch-node-num) {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}
.arch-node strong {
  display: block;
  font-size: 15px;
  line-height: 1.25;
}
.arch-node small {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}
.arch-system-node.is-default {
  border-color: color-mix(in oklch, var(--accent) 38%, var(--border));
}
.arch-runtime-stack {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px dashed color-mix(in oklch, var(--accent) 34%, var(--border));
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--accent) 5%, transparent);
}
.arch-runtime-stack .arch-system-node { min-height: 0; }
.arch-stack-label {
  align-self: start;
  padding-left: 4px;
}
.arch-link-field {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  min-height: 72px;
  padding-inline: calc(126px + 26px) 14px;
}
.arch-link-field::before {
  content: "";
  grid-column: 1 / -1;
  grid-row: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in oklch, var(--accent) 40%, var(--border)), transparent);
}
.arch-drop {
  position: relative;
  grid-row: 1;
  justify-self: center;
  width: 1px;
  height: 72px;
  background: linear-gradient(180deg, color-mix(in oklch, var(--accent) 56%, var(--border)), color-mix(in oklch, var(--accent) 18%, transparent));
}
.arch-drop::before,
.arch-drop::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: color-mix(in oklch, var(--accent) 72%, var(--surface));
  transform: translateX(-50%);
}
.arch-drop::before { top: 0; }
.arch-drop::after { bottom: 0; }
.arch-drop-skill::after,
.arch-drop-contract::after,
.arch-drop-gateway::after {
  border-radius: 0;
  transform: translateX(-50%) rotate(45deg);
}
.arch-drop-skill { grid-column: 1; }
.arch-drop-contract { grid-column: 2; }
.arch-drop-gateway { grid-column: 3; }
.arch-drop-manifest { grid-column: 4; }
.architecture-lab[data-arch-current="input"] [data-arch-link="input"],
.architecture-lab[data-arch-current="skill"] [data-arch-link="skill"],
.architecture-lab[data-arch-current="contract"] [data-arch-link="contract"],
.architecture-lab[data-arch-current="gateway"] [data-arch-link="gateway"],
.architecture-lab[data-arch-current="backend"] [data-arch-link="gateway"],
.architecture-lab[data-arch-current="manifest"] [data-arch-link="manifest"] {
  opacity: 1;
  filter: drop-shadow(0 0 10px color-mix(in oklch, var(--accent) 50%, transparent));
}
.arch-rail {
  grid-row: 1;
  justify-self: center;
  align-self: center;
  padding: 4px 8px;
  border: 1px solid color-mix(in oklch, var(--accent) 40%, var(--border));
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  white-space: nowrap;
}
.arch-rail-api { grid-column: 1 / 3; }
.arch-rail-result { grid-column: 3 / 5; }

@keyframes arch-auto-ring {
  0% {
    opacity: 0.72;
    transform: scale(1);
  }
  70%, 100% {
    opacity: 0;
    transform: scale(1.055);
  }
}
.arch-detail {
  display: grid;
  align-content: start;
  min-width: 0;
  padding: 18px;
  border: 1px solid color-mix(in oklch, var(--accent) 34%, var(--border));
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--fg) 4%, transparent);
}
.arch-detail-kicker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}
.arch-detail h3 {
  margin: 14px 0 10px;
  font-size: 22px;
}
.arch-detail p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.arch-detail-list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
}
.arch-detail-list div {
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.arch-detail dt {
  margin-bottom: 4px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.arch-detail dd {
  margin: 0;
  color: var(--fg);
  font-size: 13px;
  line-height: 1.55;
}

.capability-section {
  background: color-mix(in oklch, var(--fg) 4%, var(--bg));
}
.capability-grid {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  align-items: start;
  gap: clamp(44px, 7vw, 96px);
}
.capability-grid > *,
.qs-grid > * { min-width: 0; }
.capability-list { border-top: 1px solid var(--border); }
.capability-row {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 16px;
  min-height: 104px;
  border-bottom: 1px solid var(--border);
}
.capability-index {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
}
.capability-row b {
  display: block;
  color: var(--fg);
  font-size: 16px;
  font-weight: 600;
}
.capability-row small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}
.qs-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: start;
  gap: clamp(40px, 6vw, 72px);
}
.step-list { margin-top: 28px; }
.step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--border);
}
.step:first-child { border-top: 0; padding-top: 0; }
.step-num { padding-top: 3px; }
.step h3 { margin-bottom: 6px; font-size: 17px; }
.step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.quickstart-panel {
  padding: 18px;
  border: 1px solid color-mix(in oklch, var(--fg) 14%, transparent);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(80% 70% at 100% 0%, color-mix(in oklch, var(--accent) 10%, transparent), transparent 62%),
    var(--surface);
  box-shadow: 18px 18px 0 color-mix(in oklch, var(--accent) 8%, transparent);
}
.quickstart-panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--gap-md);
  margin-bottom: 16px;
}
.quickstart-panel-head h3 {
  margin-top: 5px;
  font-size: 22px;
}
.quickstart-kicker,
.command-index,
.command-label,
.code-lang {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.quickstart-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid color-mix(in oklch, var(--ok) 34%, var(--border));
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}
.quickstart-status i {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
}
.command-list {
  display: grid;
  gap: 12px;
}
.command-card {
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklch, var(--bg) 42%, var(--surface));
}
.command-card-top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.command-card code {
  display: block;
  padding: 12px 13px;
  border: 1px solid color-mix(in oklch, var(--border) 72%, transparent);
  border-radius: 8px;
  background: color-mix(in oklch, var(--fg) 4%, transparent);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.command-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.command-card p code {
  display: inline;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--fg);
  font-size: 0.95em;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in oklch, var(--surface) 72%, transparent);
  color: var(--muted);
  font-size: 12px;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.copy-btn:hover,
.copy-btn:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--fg);
}
.copy-btn.copied {
  border-color: color-mix(in oklch, var(--ok) 60%, transparent);
  color: var(--ok);
}
.qs-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
  margin-top: 20px;
}
.qs-links-left {
  margin-top: 28px;
}

.cta { text-align: center; }
.cta .container { max-width: 720px; }
.cta .lead { margin: 0 auto 32px; }

.pagefoot {
  padding-block: clamp(48px, 6vw, 72px) 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: var(--gap-xl);
  margin-bottom: clamp(40px, 5vw, 64px);
}
.foot-brand p {
  margin: 14px 0 18px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.7;
}
.foot-license {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
}
.foot-col h4 {
  margin: 0 0 16px;
  color: var(--fg);
  font-size: 13px;
  font-weight: 600;
}
.foot-col a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 13.5px;
  transition: color 0.15s ease;
}
.foot-col a:hover,
.foot-col a:focus-visible { color: var(--fg); }
.foot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

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

@media (max-width: 920px) {
  h1 { font-size: 54px; }
  h2 { font-size: 40px; }
  .hero-split,
  .capability-grid,
  .qs-grid { grid-template-columns: 1fr; }
  .topnav nav,
  .nav-cta { display: none; }
  .hamburger { display: inline-flex; }
  .workflow-stage { padding: 18px; }
  .workflow-stage-head {
    align-items: start;
    flex-direction: column;
  }
  .workflow-stage-note { line-height: 1.5; }
  .flow-graph {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .flow-junction {
    min-height: 38px;
  }
  .flow-junction::before,
  .flow-junction::after {
    display: none;
  }
  .flow-junction span::before {
    left: 50%;
    top: -13px;
    width: 1px;
    height: 64px;
    transform: translateX(-50%);
  }
  .flow-junction-result span::after {
    right: auto;
    top: auto;
    left: 50%;
    bottom: -22px;
    transform: translateX(-50%) rotate(135deg);
  }
  .architecture-lab { grid-template-columns: 1fr; }
  .arch-plane { grid-template-columns: 1fr; }
  .arch-boundary-row { grid-template-columns: repeat(4, minmax(150px, 1fr)); overflow-x: auto; padding-bottom: 4px; }
  .arch-runtime-grid { grid-template-columns: 1fr 1fr; }
  .arch-link-field { padding-inline: 14px; }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-lg);
  }
  .foot-brand { grid-column: 1 / -1; }
  .signal-inner {
    align-items: start;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    padding-block: 20px;
  }
  .signal-line { width: 36px; }
}

@media (max-width: 560px) {
  :root { --gutter: 20px; }
  .section { padding-block: 58px; }
  .hero { padding-block: 68px 72px; }
  h1 { font-size: 42px; }
  h2 { font-size: 32px; }
  .lead { font-size: 16px; }
  .hero-cta { display: grid; grid-template-columns: 1fr; width: 100%; }
  .btn { justify-content: center; }
  .workflow-stage {
    padding: 14px;
    box-shadow: 10px 10px 0 color-mix(in oklch, var(--accent) 7%, transparent);
  }
  .workflow-stage-head { margin-bottom: 16px; }
  .workflow-stage-note { font-size: 10px; }
  .flow-card,
  .flow-result-card {
    min-height: auto;
    padding: 14px;
  }
  .flow-card h3,
  .flow-process h3,
  .flow-result-card h3 {
    font-size: 17px;
  }
  .flow-card p,
  .flow-process p,
  .flow-result-card p {
    font-size: 13px;
  }
  .flow-process li {
    grid-template-columns: 36px 1fr;
    padding: 10px 0;
  }
  .flow-process-num {
    width: 36px;
    height: 36px;
  }
  .architecture-lab {
    padding: 18px;
    box-shadow: 10px 10px 0 color-mix(in oklch, var(--accent) 8%, transparent);
  }
  .arch-map { padding: 12px; }
  .arch-detail { padding: 16px; }
  .foot-grid { grid-template-columns: 1fr; }
}