:root {
  --bg: #0a0a0f;
  --bg-elevated: rgba(20, 20, 28, 0.86);
  --panel: #11131a;
  --panel-soft: #171a23;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f3eee8;
  --muted: #b5afaa;
  --accent-gold: #b98a42;
  --accent-violet: #7d6be6;
  --accent-teal: #4ea89e;
  --danger: #d86a72;
  --success: #63bb88;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(159, 143, 255, 0.14), transparent 32%),
    radial-gradient(circle at right top, rgba(105, 208, 197, 0.1), transparent 28%),
    linear-gradient(180deg, #090a0e 0%, #0b0d12 100%);
  font: 16px/1.6 "Inter", system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  position: relative;
  overflow-x: hidden;
}

.graph-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.94;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
blockquote {
  margin: 0;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(1100px, calc(100% - 120px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(10, 10, 15, 0.76);
  backdrop-filter: blur(20px);
}

.brand,
.hero h1,
.section h2,
.timeline-step h3,
.tool-head h3,
.vision-quote {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0;
}

.brand {
  font-size: 1.35rem;
  color: var(--accent-gold);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover,
.nav a:focus-visible,
.evidence-links a:hover,
.evidence-links a:focus-visible {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 22px;
  padding: 56px 0 28px;
}

.hero-copy,
.hero-panel,
.timeline-step,
.tool-card,
.vision-card,
.results-callout,
.vision-quote {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)), var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.hero-copy {
  padding: 34px;
  border-radius: 28px;
}

.eyebrow,
.section-kicker,
.panel-kicker,
.tool-head span,
.stat-card span,
.vision-card span {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.hero h1 {
  max-width: 12ch;
  margin-top: 16px;
  font-size: clamp(3.6rem, 8vw, 6.5rem);
  line-height: 0.92;
}

.lede,
.body-copy,
.section-copy,
.panel-note,
.tool-card p,
.timeline-step p,
.vision-card p,
.results-copy p {
  color: var(--muted);
}

.lede {
  max-width: 64ch;
  margin-top: 22px;
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent-gold), #d0a667);
  color: #1a140c;
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(185, 138, 66, 0.18);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
  padding: 28px;
  border-radius: 28px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.stat-card {
  padding: 16px;
  border-radius: 18px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
}

.stat-card strong {
  display: block;
  margin-top: 10px;
  font-size: 1.45rem;
}

.panel-note {
  margin-top: 18px;
}

.model-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.model-chip {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--muted);
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.model-chip:hover,
.model-chip:focus-visible {
  transform: translateY(-1px);
  color: var(--text);
}

.model-chip.active {
  color: var(--text);
  border-color: rgba(185, 138, 66, 0.4);
  background: linear-gradient(180deg, rgba(185, 138, 66, 0.08), rgba(255, 255, 255, 0)), var(--panel-soft);
}

.section {
  padding: 24px 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: 24px;
  padding: 38px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin-top: 10px;
  font-size: clamp(2.2rem, 4.8vw, 4rem);
  line-height: 0.98;
}

.body-copy {
  display: grid;
  gap: 16px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin-bottom: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.section-copy {
  max-width: 44ch;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.trajectory-hero {
  align-items: stretch;
}

.trajectory-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 18px;
}

.trajectory-sidebar,
.trajectory-main,
.trajectory-header-card,
.trajectory-meta-card,
.trajectory-detail-block,
.iteration-card,
.trajectory-tool {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
    var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.trajectory-sidebar {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: 26px;
  align-self: start;
  position: sticky;
  top: 96px;
}

.trajectory-tool {
  width: 100%;
  padding: 16px;
  border-radius: 18px;
  text-align: left;
  color: var(--text);
  cursor: pointer;
}

.trajectory-tool.active {
  border-color: rgba(211, 165, 91, 0.4);
  background:
    linear-gradient(180deg, rgba(211, 165, 91, 0.08), rgba(255, 255, 255, 0)),
    var(--panel);
}

.trajectory-tool-name {
  display: block;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.35rem;
}

.trajectory-tool-meta,
.iteration-evidence {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.trajectory-main {
  padding: 18px;
  border-radius: 26px;
}

.trajectory-header-card {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  border-radius: 22px;
}

.trajectory-header-card h3,
.iteration-head h4 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  margin-top: 8px;
}

.trajectory-header-card h3 {
  font-size: 2rem;
}

.trajectory-summary-pill,
.iteration-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.trajectory-summary-pill.success,
.iteration-badge.success {
  color: var(--success);
  border: 1px solid rgba(147, 230, 179, 0.22);
  background: rgba(147, 230, 179, 0.05);
}

.trajectory-summary-pill.failure,
.iteration-badge.failure {
  color: var(--danger);
  border: 1px solid rgba(255, 141, 141, 0.22);
  background: rgba(255, 141, 141, 0.05);
}

.trajectory-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.trajectory-meta-card {
  padding: 16px;
  border-radius: 18px;
}

.trajectory-meta-card span {
  display: block;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}

.trajectory-meta-card strong {
  display: block;
  margin-top: 8px;
  font-size: 1rem;
}

.trajectory-detail-block,
.iteration-card {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 18px;
}

.trajectory-detail-block summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}

.trajectory-detail-block summary::-webkit-details-marker {
  display: none;
}

.trajectory-detail-block pre,
.trajectory-counterexample pre {
  margin-top: 12px;
  padding: 14px;
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.22);
  color: #efe8dc;
  font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-block .prompt-counterexample-heading {
  color: #8fc7ff;
  font-weight: 600;
}

.prompt-block .prompt-counterexample-line {
  color: #78b8ff;
}

.trajectory-empty {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
}

.iteration-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
}

.iteration-head h4 {
  font-size: 1.5rem;
}

.trajectory-counterexample p + p {
  margin-top: 8px;
}

.diagram-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.diagram-card {
  padding: 24px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
    var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.diagram-card.highlighted {
  border-color: rgba(185, 138, 66, 0.4);
  background:
    linear-gradient(180deg, rgba(185, 138, 66, 0.08), rgba(255, 255, 255, 0)),
    var(--panel);
  box-shadow:
    inset 0 1px 0 rgba(185, 138, 66, 0.14),
    0 24px 80px rgba(0, 0, 0, 0.22);
}

.diagram-kicker,
.stack-label,
.risk-strip span {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.diagram-card h3 {
  margin-top: 10px;
  font-size: 2rem;
}

.stack-box,
.gateway-box,
.mini-tool,
.risk-strip {
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.stack-box,
.gateway-box {
  padding: 18px;
  border-radius: 20px;
}

.stack-box strong,
.gateway-box strong {
  display: block;
  margin-top: 10px;
  font-size: 1.18rem;
}

.stack-box p,
.gateway-box p,
.risk-strip p {
  margin-top: 10px;
  color: var(--muted);
}

.stack-box.agent {
  margin-top: 22px;
}

.stack-box.tools.danger {
  border-color: rgba(216, 106, 114, 0.24);
  background: linear-gradient(180deg, rgba(216, 106, 114, 0.08), rgba(255, 255, 255, 0)), var(--panel-soft);
}

.down-arrow {
  display: grid;
  place-items: center;
  height: 56px;
  color: var(--accent-violet);
  font-size: 1.9rem;
}

.gateway-shell {
  display: grid;
  gap: 14px;
}

.gateway-box {
  border-color: rgba(78, 168, 158, 0.24);
  background: linear-gradient(180deg, rgba(78, 168, 158, 0.08), rgba(255, 255, 255, 0)), var(--panel-soft);
}

.gateway-rail {
  height: 1px;
  margin: 0 8px;
  background: linear-gradient(90deg, transparent, rgba(78, 168, 158, 0.68), transparent);
}

.gateway-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mini-tool {
  padding: 14px;
  border-radius: 16px;
  color: var(--text);
  text-align: center;
}

.risk-strip {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
}

.risk-strip.safer {
  border-color: rgba(99, 187, 136, 0.24);
  background: linear-gradient(180deg, rgba(99, 187, 136, 0.08), rgba(255, 255, 255, 0)), var(--panel-soft);
}

.timeline-step,
.tool-card,
.vision-card {
  padding: 20px;
  border-radius: 22px;
}

.timeline-step span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(125, 107, 230, 0.18);
  color: var(--accent-violet);
  font-size: 0.85rem;
  font-weight: 600;
}

.timeline-step h3 {
  margin-top: 18px;
  font-size: 1.55rem;
}

.results-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 16px;
  margin-bottom: 18px;
}

.benchmark-note {
  margin-top: 14px;
  margin-bottom: 18px;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(185, 138, 66, 0.26);
  background:
    linear-gradient(180deg, rgba(185, 138, 66, 0.08), rgba(255, 255, 255, 0)),
    var(--panel);
  box-shadow: inset 0 1px 0 rgba(185, 138, 66, 0.12), 0 24px 80px rgba(0, 0, 0, 0.22);
}

.benchmark-note-kicker {
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.benchmark-note p + p,
.benchmark-note-kicker + p {
  margin-top: 10px;
}

.results-callout {
  display: grid;
  place-items: center;
  padding: 18px;
  border-radius: 24px;
  text-align: center;
}

.results-callout span {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}

.results-callout strong {
  margin-top: 8px;
  font-size: clamp(2.6rem, 5vw, 4rem);
  color: var(--accent-teal);
  text-shadow: 0 0 24px rgba(78, 168, 158, 0.18);
}

.tool-grid,
.vision-grid {
  display: grid;
  gap: 14px;
}

.tool-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 24px;
}

.tool-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.tool-head h3 {
  font-size: 1.6rem;
}

.tool-card p {
  margin-top: 14px;
}

.tool-card.success {
  border-color: rgba(99, 187, 136, 0.22);
  background: linear-gradient(180deg, rgba(99, 187, 136, 0.08), rgba(255, 255, 255, 0)), var(--panel);
  box-shadow: inset 0 1px 0 rgba(99, 187, 136, 0.14), 0 24px 80px rgba(0, 0, 0, 0.22);
}

.tool-card.success .tool-head span {
  color: var(--success);
}

.tool-card.failure {
  border-color: rgba(216, 106, 114, 0.22);
  background: linear-gradient(180deg, rgba(216, 106, 114, 0.08), rgba(255, 255, 255, 0)), var(--panel);
  box-shadow: inset 0 1px 0 rgba(216, 106, 114, 0.14), 0 24px 80px rgba(0, 0, 0, 0.22);
}

.tool-card.failure .tool-head span {
  color: var(--danger);
}

.evidence-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 32px;
  padding-top: 8px;
  color: var(--accent-gold);
}

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

.vision-card span {
  color: var(--accent-teal);
}

.vision-card p {
  margin-top: 12px;
}

.vision-quote {
  margin-top: 18px;
  padding: 28px;
  border-radius: 24px;
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  line-height: 1.1;
}

.leaderboard-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.leaderboard-card,
.leaderboard-table-wrap {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
    var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.leaderboard-card {
  padding: 22px;
  border-radius: 24px;
}

.leaderboard-card.top {
  border-color: rgba(185, 138, 66, 0.35);
  background:
    linear-gradient(180deg, rgba(185, 138, 66, 0.08), rgba(255, 255, 255, 0)),
    var(--panel);
}

.leaderboard-card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.leaderboard-card-head h3 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 2rem;
}

.leaderboard-rank {
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.leaderboard-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.leaderboard-metric {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.leaderboard-metric span {
  display: block;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}

.leaderboard-metric strong {
  display: block;
  margin-top: 8px;
  font-size: 1.2rem;
}

.leaderboard-link {
  margin-top: 18px;
}

.leaderboard-table-wrap {
  overflow-x: auto;
  border-radius: 24px;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.leaderboard-table th {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}

.tool-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  border: 1px solid var(--line);
  background: var(--panel-soft);
}

.tool-pill.success {
  color: var(--success);
  border-color: rgba(99, 187, 136, 0.24);
}

.tool-pill.failure {
  color: var(--danger);
  border-color: rgba(216, 106, 114, 0.24);
}

@media (max-width: 1100px) {
  .hero,
  .two-column,
  .results-band,
  .diagram-grid,
  .trajectory-layout,
  .trajectory-meta-grid,
  .leaderboard-grid,
  .tool-grid,
  .vision-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: start;
  }

  .trajectory-sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(100% - 24px, 1100px);
  }

  .topbar {
    flex-direction: column;
    align-items: start;
  }

  .hero-copy,
  .hero-panel,
  .timeline-step,
  .tool-card,
  .vision-card,
  .vision-quote {
    padding: 20px;
  }

  .hero {
    padding-top: 30px;
  }
}