:root {
  color-scheme: dark;
  --ink: #f4f7fb;
  --muted: #aeb8ca;
  --night: #080d19;
  --navy: #111a32;
  --panel: #121b31;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #3f8edb;
  --accent-deep: #2c69a8;
  --focus: #f0a72f;
  --cyan: #63dcff;
  --font-ui: "Montserrat", "Avenir Next", "Segoe UI", sans-serif;
  --hg-primary: #1f3a5f;
  --hg-primary-700: #16294a;
  --hg-primary-100: #e7eef7;
  --hg-accent: #c9a227;
  --hg-accent-700: #8e7012;
  --hg-bg-body: #f5f7fa;
  --hg-bg-surface: #ffffff;
  --hg-ink: #1a1f2e;
  --hg-ink-muted: #5a6478;
  --hg-border: #e3e7ee;
  --hg-red: #dc3545;
  --hg-orange: #fd7e14;
  --hg-yellow: #ffc107;
  --hg-green: #198754;
  --hg-blue: #0dcaf0;
  --hg-grey: #6c757d;
  font-family: var(--font-ui);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-ui);
}

button, input { font: inherit; }

a { color: inherit; }

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

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.topbar {
  align-items: center;
  background: rgba(3, 11, 20, 0.86);
  border-bottom: 2px solid rgba(99, 220, 255, 0.72);
  backdrop-filter: blur(16px);
  display: flex;
  inset: 0 0 auto;
  justify-content: space-between;
  min-height: 4.4rem;
  padding: 0.65rem clamp(1.25rem, 3.5vw, 4.5rem);
  position: absolute;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 0.75rem;
  text-decoration: none;
}

.brand__icon {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.16);
  flex: 0 0 auto;
  height: 1.75rem;
  object-fit: contain;
  padding: 0.08rem;
  width: 1.75rem;
}

.brand__name {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.realm-nav {
  align-items: center;
  display: flex;
  gap: 0.15rem;
  margin-left: 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.realm-nav::-webkit-scrollbar { display: none; }

.realm-nav__link {
  align-items: center;
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.72);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 0.76rem;
  font-weight: 500;
  gap: 0.38rem;
  padding: 0.5rem 0.68rem;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
}

.realm-nav__icon {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  height: 1.4rem;
  object-fit: contain;
  padding: 0.06rem;
  width: 1.4rem;
}

.realm-nav__icon--boxed {
  background: #fff;
  border-radius: 50%;
}

.realm-nav__link:hover,
.realm-nav__link:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.realm-nav__cta {
  background: var(--cyan);
  border: 1px solid rgba(255, 255, 255, 0.46);
  color: #03101a;
  font-weight: 700;
  margin-left: 0.4rem;
  padding-inline: 0.9rem;
}

.realm-nav__cta:hover,
.realm-nav__cta:focus-visible {
  background: #fff;
  color: #03101a;
}

.realm-nav__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.nav-toggle {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  display: none;
  font: 600 0.875rem/1 var(--font-ui);
  gap: 0.55rem;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.nav-toggle__bars,
.nav-toggle__bars span { display: block; }

.nav-toggle__bars { width: 1rem; }

.nav-toggle__bars span {
  background: currentColor;
  height: 1px;
  margin: 0.2rem 0;
  transition: transform 140ms ease, opacity 140ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child {
  transform: translateY(0.2rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child {
  transform: translateY(-0.2rem) rotate(-45deg);
}

.email-row button {
  border: 0;
  border-radius: 0.45rem;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
  cursor: pointer;
  transition: background 160ms ease;
}

.email-row button:hover {
  background: #54a0e8;
}

.hero {
  min-height: 100svh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4.4rem 1.5rem 0;
  background-color: var(--night);
  background-image:
    linear-gradient(180deg, rgba(8, 13, 25, 0.72) 0%, rgba(8, 13, 25, 0.34) 45%, rgba(8, 13, 25, 0.16) 72%, rgba(8, 13, 25, 0.5) 100%),
    url("ai-guardian-bifrost.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero-content { max-width: 820px; text-align: center; }

h1 {
  margin: 0;
  font-size: clamp(2.65rem, 5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  text-wrap: balance;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.55);
}

.hero-copy {
  max-width: 760px;
  margin: 1.35rem auto 0;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.55;
  color: #e7ecf4;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.75);
}


.features {
  scroll-margin-top: 1rem;
  padding: clamp(5rem, 9vw, 8rem) clamp(1.25rem, 5vw, 5rem);
  background: var(--hg-bg-body);
  color: var(--hg-ink);
}

.features__header {
  max-width: 76rem;
  margin: 0 auto clamp(4rem, 8vw, 7rem);
  text-align: center;
}

.features__header h2 {
  margin: 0;
  color: var(--hg-primary);
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.features__header p {
  margin: 1rem 0 0;
  color: var(--hg-ink-muted);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.feature {
  max-width: 92rem;
  margin: 0 auto clamp(6rem, 10vw, 10rem);
  display: grid;
  grid-template-columns: minmax(16rem, 0.58fr) minmax(0, 1.42fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 7rem);
}

.feature:last-child { margin-bottom: 0; }
.feature--reverse { grid-template-columns: minmax(0, 1.42fr) minmax(16rem, 0.58fr); }
.feature--reverse .feature__copy { order: 2; }
.feature--reverse .product-screen { order: 1; }

.feature__copy { max-width: 31rem; }

.feature__number {
  margin: 0 0 0.85rem;
  color: var(--hg-accent-700);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.feature__copy h3 {
  margin: 0;
  color: var(--hg-primary);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.feature__copy > p:last-child {
  margin: 1.2rem 0 0;
  color: var(--hg-ink-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.product-screen {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid #cfd6e1;
  border-radius: 0.75rem;
  background: var(--hg-bg-surface);
  box-shadow: 0 1.5rem 4rem rgba(31, 58, 95, 0.16), 0 0.25rem 0.75rem rgba(31, 58, 95, 0.08);
}

.product-screen__bar {
  min-height: 2.55rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 0.85rem;
  border-bottom: 3px solid var(--hg-accent);
  background: var(--hg-primary);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.65rem;
  font-weight: 500;
}

.product-screen__bar > :last-child { margin-left: auto; }

.product-screen__brand {
  color: #fff;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.product-screen__canvas {
  min-height: 28rem;
  padding: 1rem;
  background: var(--hg-bg-body);
  color: var(--hg-ink);
  font-size: 0.72rem;
}

.screen-page-header {
  min-height: 4.3rem;
  margin-bottom: 0.8rem;
  padding: 0.8rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--hg-border);
  border-radius: 0.35rem;
  background: var(--hg-bg-surface);
}

.screen-page-header h4 {
  margin: 0.1rem 0 0.18rem;
  color: var(--hg-ink);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.25;
}

.screen-page-header p { margin: 0; color: var(--hg-ink-muted); line-height: 1.4; }

.screen-kicker,
.screen-label {
  color: var(--hg-ink-muted);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.screen-ref {
  padding: 0.35rem 0.5rem;
  border-radius: 0.3rem;
  background: var(--hg-primary-100);
  color: var(--hg-primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.62rem;
}

.screen-button {
  flex: 0 0 auto;
  padding: 0.48rem 0.68rem;
  border-radius: 0.3rem;
  background: var(--hg-primary);
  color: #fff;
  font-size: 0.63rem;
  font-weight: 700;
}

.product-screen__main {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(12rem, 1fr);
  gap: 0.8rem;
}

.screen-card,
.meaning-card,
.metric-strip > div {
  border: 1px solid var(--hg-border);
  border-radius: 0.5rem;
  background: var(--hg-bg-surface);
}

.screen-card { padding: 0.82rem; }
.screen-card--primary { min-height: 18rem; }

.screen-card__heading {
  margin-bottom: 0.72rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--hg-ink-muted);
}

.screen-card__heading strong { color: var(--hg-ink); font-size: 0.78rem; }
.screen-card strong { display: block; color: var(--hg-ink); font-size: 0.74rem; }
.screen-card small { display: block; margin-top: 0.18rem; color: var(--hg-ink-muted); font-size: 0.62rem; line-height: 1.4; }

.confidence,
.output-chip {
  padding: 0.25rem 0.42rem;
  border-radius: 999px;
  background: #eaf5ef;
  color: var(--hg-green);
  font-size: 0.57rem;
  font-weight: 700;
}

.screen-lead { margin: 0; color: var(--hg-ink); font-size: 0.76rem; font-weight: 500; line-height: 1.55; }

.evidence-list,
.change-list {
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
}

.evidence-list li,
.change-list li {
  padding: 0.52rem 0;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px dashed var(--hg-border);
  color: var(--hg-ink-muted);
}

.evidence-list li span { min-width: 2.5rem; color: var(--hg-primary); font-weight: 600; }
.evidence-list li:last-child,
.change-list li:last-child { border-bottom: 0; }

.screen-action {
  margin-top: 0.85rem;
  padding: 0.62rem 0.7rem;
  border-left: 3px solid var(--hg-accent);
  border-radius: 0.25rem;
  background: #fbf8ec;
}

.screen-action span { display: block; color: var(--hg-ink-muted); font-size: 0.58rem; text-transform: uppercase; }
.screen-action strong { margin-top: 0.2rem; color: var(--hg-primary); }
.screen-rail { display: grid; align-content: start; gap: 0.65rem; }

.status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.22rem 0.42rem;
  border-radius: 0.25rem;
  color: #fff;
  font-size: 0.56rem;
  font-weight: 700;
  line-height: 1;
}

.status--red { background: var(--hg-red); }
.status--orange { background: var(--hg-orange); }
.status--green { background: var(--hg-green); }
.status--blue { background: #087990; }

.meaning-grid {
  margin-bottom: 0.8rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}

.meaning-card { min-height: 7.1rem; padding: 0.78rem; border-top: 4px solid var(--hg-primary); }
.meaning-card--impact { border-top-color: var(--hg-orange); }
.meaning-card span { display: block; color: var(--hg-ink-muted); font-size: 0.58rem; font-weight: 700; text-transform: uppercase; }
.meaning-card strong { display: block; margin-top: 0.65rem; font-size: 0.76rem; }
.meaning-card small { display: block; margin-top: 0.28rem; color: var(--hg-ink-muted); font-size: 0.62rem; line-height: 1.4; }

.dependency-path {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 1rem 0.5rem;
}

.dependency-path span {
  padding: 0.52rem 0.62rem;
  border: 1px solid var(--hg-border);
  border-radius: 0.35rem;
  background: var(--hg-bg-body);
  color: var(--hg-primary);
  font-weight: 600;
}

.dependency-path .node-warning { border-color: var(--hg-orange); background: #fff5eb; color: #9a4d00; }
.dependency-path b { color: var(--hg-ink-muted); }

.trace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(12rem, 0.8fr);
  gap: 0.8rem;
}

.trace-waterfall { padding-top: 0.65rem; }
.trace-axis { margin: 0 0 0.45rem 7.6rem; display: flex; justify-content: space-between; color: var(--hg-ink-muted); font-size: 0.54rem; }
.trace-row { min-height: 2.7rem; display: grid; grid-template-columns: 7rem 1fr 3.2rem; align-items: center; gap: 0.45rem; border-top: 1px solid var(--hg-border); }
.trace-row span { color: var(--hg-primary); font-weight: 600; }
.trace-row i { height: 0.72rem; margin-left: var(--start); width: var(--width); border-radius: 999px; background: var(--hg-primary); opacity: 0.78; }
.trace-row i.trace-error { background: var(--hg-red); opacity: 1; }
.trace-row b { color: var(--hg-ink-muted); font-size: 0.58rem; font-weight: 500; text-align: right; }

.trace-log { border-left: 4px solid var(--hg-red); }
.trace-log code { display: block; margin-top: 1.1rem; color: var(--hg-red); font-size: 0.8rem; font-weight: 700; }
.trace-log p { margin: 0.45rem 0 0; color: var(--hg-ink); line-height: 1.55; }

.screen-table-wrap { overflow: hidden; border: 1px solid var(--hg-border); border-radius: 0.5rem; background: #fff; }
.screen-table { width: 100%; border-collapse: collapse; font-size: 0.64rem; }
.screen-table th { padding: 0.62rem 0.65rem; background: #f8f9fb; color: var(--hg-ink-muted); font-size: 0.55rem; font-weight: 700; letter-spacing: 0.04em; text-align: left; text-transform: uppercase; }
.screen-table td { padding: 0.66rem 0.65rem; border-top: 1px solid var(--hg-border); color: var(--hg-ink-muted); vertical-align: middle; }
.screen-table td strong { color: var(--hg-primary); font-size: 0.65rem; }

.policy-note {
  margin-top: 0.75rem;
  padding: 0.65rem 0.8rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-left: 4px solid var(--hg-accent);
  border-radius: 0.3rem;
  background: #fbf8ec;
}

.policy-note span { color: var(--hg-ink-muted); }

.metric-strip,
.release-delta {
  margin-bottom: 0.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.metric-strip > div,
.release-delta > .screen-card { padding: 0.7rem 0.8rem; }
.metric-strip span { display: block; color: var(--hg-ink-muted); font-size: 0.58rem; text-transform: uppercase; }
.metric-strip strong { display: block; margin-top: 0.28rem; color: var(--hg-primary); font-size: 1rem; }
.metric-strip small { display: block; margin-top: 0.15rem; color: var(--hg-ink-muted); font-size: 0.57rem; }
.trend--down,
.text-warning { color: #a34f00 !important; }

.chart-card { padding-bottom: 0.4rem; }
.forecast-chart { width: 100%; height: 12.5rem; overflow: visible; }
.chart-grid path { fill: none; stroke: var(--hg-border); stroke-width: 1; }
.chart-floor { fill: none; stroke: var(--hg-red); stroke-width: 1.5; stroke-dasharray: 5 5; }
.chart-actual { fill: none; stroke: var(--hg-primary); stroke-width: 4; stroke-linecap: round; }
.chart-forecast { fill: none; stroke: var(--hg-orange); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 7 6; }
.chart-breach { fill: var(--hg-red); stroke: #fff; stroke-width: 3; }
.chart-labels { fill: var(--hg-ink-muted); font: 500 11px var(--font-ui); }

.filter-row {
  margin-bottom: 0.7rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.filter-row span {
  padding: 0.5rem 0.6rem;
  border-radius: 0.3rem;
  background: #e9edf2;
  color: var(--hg-ink-muted);
  font-size: 0.61rem;
}

.dot {
  display: inline-block;
  width: 0.48rem;
  height: 0.48rem;
  margin-right: 0.42rem;
  border-radius: 50%;
  vertical-align: middle;
}

.dot--red { background: var(--hg-red); }
.dot--orange { background: var(--hg-orange); }
.dot--yellow { background: var(--hg-yellow); }
.dot--green { background: var(--hg-green); }

.output-chip { background: var(--hg-primary-100); color: var(--hg-primary); }

.screen-document blockquote {
  margin: 0.85rem 0;
  padding: 0.75rem 0.85rem;
  border-left: 4px solid var(--hg-accent);
  background: #fbf8ec;
  color: var(--hg-ink);
  font-weight: 500;
  line-height: 1.55;
}

.document-section { padding: 0.65rem 0; border-top: 1px solid var(--hg-border); }
.document-section p { margin: 0.28rem 0 0; color: var(--hg-ink-muted); line-height: 1.5; }

.health-summary { display: flex; gap: 0.8rem; color: var(--hg-ink-muted); font-size: 0.6rem; }
.health-summary .dot { margin-right: 0.25rem; }

.release-delta .screen-card strong { margin-top: 0.36rem; color: var(--hg-primary); font-size: 0.83rem; }
.change-list code { color: var(--hg-primary); font-weight: 700; }
.change-list span { color: var(--hg-ink-muted); }

.feature--lead {
  grid-template-columns: minmax(15rem, 0.45fr) minmax(0, 1.55fr);
}

.sci-model-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.4fr) minmax(11rem, 0.8fr);
  gap: 0.8rem;
}

.context-stack { display: grid; gap: 0.55rem; }

.context-layer {
  overflow: hidden;
  display: grid;
  grid-template-columns: 6.4rem 1fr;
  border: 1px solid var(--hg-border);
  border-left: 4px solid var(--hg-primary);
  border-radius: 0.45rem;
  background: var(--hg-bg-surface);
}

.context-layer--process { border-left-color: var(--hg-accent); }
.context-layer--state { border-left-color: var(--hg-orange); }

.context-layer > header {
  padding: 0.68rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--hg-border);
  background: #f8f9fb;
}

.context-layer > header span { color: var(--hg-primary); font-size: 0.72rem; font-weight: 700; }
.context-layer > header small { margin-top: 0.2rem; color: var(--hg-ink-muted); font-size: 0.54rem; }

.context-nodes {
  padding: 0.55rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.42rem;
}

.context-nodes b,
.mapped-record,
.process-step,
.learning-step {
  padding: 0.58rem;
  border: 1px solid var(--hg-border);
  border-radius: 0.32rem;
  background: var(--hg-bg-body);
  color: var(--hg-ink-muted);
  font-size: 0.54rem;
  font-weight: 700;
  line-height: 1.25;
}

.context-nodes em {
  margin-top: 0.24rem;
  display: block;
  overflow-wrap: anywhere;
  color: var(--hg-primary);
  font-size: 0.62rem;
  font-style: normal;
  font-weight: 600;
}

.add-context-panel {
  padding: 0.8rem;
  border: 1px solid var(--hg-border);
  border-top: 4px solid var(--hg-accent);
  border-radius: 0.5rem;
  background: var(--hg-bg-surface);
}

.add-context-panel > strong { color: var(--hg-primary); font-size: 0.8rem; }
.add-context-panel dl { margin: 0.7rem 0; }
.add-context-panel dl div { padding: 0.42rem 0; border-top: 1px solid var(--hg-border); }
.add-context-panel dt { color: var(--hg-ink-muted); font-size: 0.52rem; font-weight: 700; text-transform: uppercase; }
.add-context-panel dd { margin: 0.16rem 0 0; color: var(--hg-ink); font-size: 0.61rem; line-height: 1.35; }

.source-mapping {
  display: grid;
  grid-template-columns: minmax(12rem, 0.9fr) 2rem minmax(0, 1.5fr);
  align-items: center;
  gap: 0.7rem;
}

.mapping-form .screen-label:not(:first-child) { margin-top: 0.8rem; display: block; }
.mapping-arrow { color: var(--hg-accent-700); font-size: 1.4rem; font-weight: 700; text-align: center; }
.mapped-records { display: grid; gap: 0.58rem; }
.mapped-record { border-left: 4px solid var(--hg-primary); background: #fff; }
.mapped-record:nth-child(2) { border-left-color: var(--hg-accent); }
.mapped-record:nth-child(3) { border-left-color: var(--hg-orange); }
.mapped-record span { color: var(--hg-ink-muted); font-size: 0.52rem; text-transform: uppercase; }
.mapped-record strong { margin-top: 0.18rem; color: var(--hg-primary); font-size: 0.69rem; }
.mapped-record small { margin-top: 0.12rem; color: var(--hg-ink-muted); font-size: 0.58rem; }

.topology-card { display: grid; align-content: center; min-height: 18rem; }
.topology-row { display: flex; align-items: center; justify-content: center; gap: 0.55rem; }
.topology-row > b { color: var(--hg-ink-muted); font-size: 0.52rem; font-weight: 500; }
.topology-node,
.live-node {
  min-width: 7rem;
  padding: 0.72rem;
  border: 1px solid var(--hg-border);
  border-radius: 0.42rem;
  background: #fff;
  color: var(--hg-primary);
  font-size: 0.65rem;
  font-weight: 700;
  text-align: center;
}

.topology-node small { margin-top: 0.2rem; display: block; color: var(--hg-ink-muted); font-size: 0.52rem; font-weight: 500; }
.topology-node--focus { border: 2px solid var(--hg-accent); box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.12); }
.topology-branches { margin-top: 2rem; display: flex; justify-content: center; gap: 0.5rem; }
.topology-branches span { padding: 0.5rem; border-radius: 0.3rem; background: var(--hg-primary-100); color: var(--hg-primary); font-weight: 600; }
.topology-branches small { color: var(--hg-ink-muted); font-size: 0.5rem; }

.process-flow,
.learning-loop,
.live-state-map {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.process-flow { min-height: 15rem; padding: 1rem; border: 1px solid var(--hg-border); border-radius: 0.5rem; background: #fff; }
.process-flow > b,
.learning-loop > b,
.live-state-map > b { color: var(--hg-accent-700); font-size: 0.85rem; }
.process-step { flex: 1; min-height: 6.5rem; background: var(--hg-bg-body); }
.process-step--warning { border: 2px solid var(--hg-orange); background: #fff5eb; }
.process-step span,
.learning-step span { display: block; color: var(--hg-ink-muted); font-size: 0.52rem; text-transform: uppercase; }
.process-step strong,
.learning-step strong { margin-top: 0.65rem; display: block; color: var(--hg-primary); font-size: 0.68rem; }
.process-step small,
.learning-step small { margin-top: 0.2rem; display: block; color: var(--hg-ink-muted); font-size: 0.55rem; font-weight: 500; }
.process-links,
.state-evidence { margin-top: 0.72rem; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.55rem; }
.process-links span,
.state-evidence span { padding: 0.58rem; border-radius: 0.3rem; background: var(--hg-primary-100); color: var(--hg-primary); font-size: 0.58rem; line-height: 1.4; }

.live-state-map { min-height: 11rem; }
.live-node { min-width: 0; flex: 1; }
.live-node--alert { border: 2px solid var(--hg-red); background: #fff5f6; }
.live-node .status { margin: 0.5rem auto 0; display: table; }

.agent-exchange {
  display: grid;
  grid-template-columns: minmax(9rem, 0.7fr) minmax(0, 1.4fr) minmax(10rem, 0.7fr);
  gap: 0.7rem;
}

.agent-request,
.agent-response {
  padding: 0.8rem;
  border: 1px solid var(--hg-border);
  border-radius: 0.5rem;
  background: #fff;
}

.agent-request > span,
.agent-response > span { color: var(--hg-ink-muted); font-size: 0.55rem; font-weight: 700; text-transform: uppercase; }
.agent-request code { margin-top: 0.8rem; display: block; color: var(--hg-primary); font-size: 0.61rem; line-height: 1.9; }
.agent-response { background: var(--hg-primary-700); }
.agent-response > span { color: #b8c8db; }
.agent-response pre { margin: 0.7rem 0 0; white-space: pre-wrap; color: #f2f6fb; font: 500 0.59rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; }

.learning-loop { min-height: 14rem; }
.learning-step { flex: 1; min-height: 7.4rem; background: #fff; }
.learning-step--accent { border: 2px solid var(--hg-accent); background: #fbf8ec; }
.learning-summary { border-left: 4px solid var(--hg-primary); }
.learning-summary strong { margin-top: 0.35rem; line-height: 1.5; }

@media (max-width: 1100px) {
  .feature,
  .feature--reverse,
  .feature--lead {
    max-width: 58rem;
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature--reverse .feature__copy,
  .feature--reverse .product-screen { order: initial; }

  .feature__copy { max-width: 44rem; }
}

.beta-dialog {
  width: min(92vw, 560px);
  margin: auto;
  padding: clamp(1.5rem, 5vw, 2.75rem);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0.85rem;
  background: linear-gradient(145deg, #16213b, #0c1325);
  color: var(--ink);
  box-shadow: 0 34px 100px rgba(0, 0, 0, 0.6);
}

.beta-dialog::backdrop { background: rgba(2, 6, 14, 0.78); backdrop-filter: blur(8px); }

.dialog-close {
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 2rem;
  cursor: pointer;
}

.beta-dialog h2 { margin: 0; font-size: clamp(2rem, 6vw, 3rem); letter-spacing: -0.04em; }
.beta-dialog > p { margin: 0.75rem 0 1.5rem; color: var(--muted); line-height: 1.55; }
.beta-dialog form > label:first-child { display: block; margin-bottom: 0.5rem; font-size: 0.9rem; font-weight: 700; }

.email-row { display: grid; grid-template-columns: 1fr auto; gap: 0.65rem; }
.email-row input { min-width: 0; border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 0.45rem; padding: 0.9rem 1rem; background: rgba(4, 9, 19, 0.72); color: var(--ink); font-size: 1rem; }
.email-row input::placeholder { color: #748097; }
.email-row button { padding: 0.85rem 1rem; }
.email-row button:disabled { cursor: wait; opacity: 0.65; transform: none; }

.consent-row { display: flex; align-items: flex-start; gap: 0.65rem; margin-top: 1rem; color: var(--muted); font-size: 0.875rem; line-height: 1.45; }
.consent-row input { width: 1.05rem; height: 1.05rem; margin-top: 0.12rem; accent-color: var(--accent-deep); }
.form-status { min-height: 1.4rem; margin: 0.8rem 0 0; color: var(--accent); font-size: 0.9rem; }

@media (max-width: 820px), (max-height: 700px) and (max-width: 1100px) {
  .topbar {
    gap: 0.75rem;
    min-height: 4rem;
    padding: 0.6rem 1rem;
    width: 100%;
  }

  .brand {
    min-width: 0;
    overflow: hidden;
  }

  .brand__name { font-size: 0.7rem; }

  .nav-toggle {
    display: inline-flex;
    flex: 0 0 auto;
    position: relative;
    z-index: 2;
  }

  .realm-nav {
    align-items: stretch;
    background: rgba(3, 11, 20, 0.97);
    border: 1px solid rgba(99, 220, 255, 0.32);
    border-top: 2px solid rgba(99, 220, 255, 0.82);
    box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.45);
    display: grid;
    gap: 0.35rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    left: 1rem;
    margin: 0;
    max-height: calc(100svh - 5rem);
    max-width: calc(100vw - 2rem);
    opacity: 0;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 0.7rem;
    pointer-events: none;
    position: absolute;
    right: 1rem;
    top: calc(100% + 0.4rem);
    transform: translateY(-0.5rem);
    transition: opacity 140ms ease, transform 140ms ease, visibility 140ms ease;
    visibility: hidden;
  }

  .realm-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
  }

  .realm-nav__link {
    font-size: 0.875rem;
    min-height: 2.75rem;
    min-width: 0;
    overflow-wrap: anywhere;
    padding: 0.68rem 0.8rem;
  }

  .realm-nav__cta {
    justify-content: center;
    margin-left: 0;
  }

  .realm-nav__icon {
    height: 1.35rem;
    width: 1.35rem;
  }
}

@media (max-width: 720px) {
  .hero { min-height: 100svh; padding: 4rem 1.25rem 0; background-position: 68% center; }
  h1 { font-size: clamp(2.65rem, 13vw, 4.2rem); }
  .hero-copy { font-size: 1.1rem; }
  .features { padding: 4.5rem 1rem; }
  .features__header { margin-bottom: 4.5rem; }
  .feature { margin-bottom: 5.5rem; }
  .product-screen__canvas { min-height: 0; padding: 0.75rem; }
  .screen-page-header { align-items: flex-start; flex-wrap: wrap; }
  .product-screen__main,
  .trace-grid,
  .sci-model-layout,
  .source-mapping,
  .agent-exchange { grid-template-columns: 1fr; }
  .mapping-arrow { transform: rotate(90deg); }
  .context-layer { grid-template-columns: 5.6rem 1fr; }
  .context-nodes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topology-row,
  .process-flow,
  .learning-loop,
  .live-state-map { flex-wrap: wrap; }
  .process-step,
  .learning-step,
  .live-node { min-width: 42%; }
  .process-links,
  .state-evidence { grid-template-columns: 1fr; }
  .meaning-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dependency-path { flex-wrap: wrap; }
  .screen-table-wrap { overflow-x: auto; }
  .screen-table { min-width: 36rem; }
  .policy-note { align-items: flex-start; flex-direction: column; }
  .email-row { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .topbar { padding-inline: 0.75rem; }
  .brand__name { display: none; }
  .realm-nav {
    grid-template-columns: 1fr;
    left: 0.75rem;
    max-width: calc(100vw - 1.5rem);
    right: 0.75rem;
  }
  .realm-nav__link {
    font-size: 0.95rem;
    padding: 0.75rem 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}