:root {
  --bg: #1c2233;
  --ink: #f5f7fc;
  --ink-muted: #a3afc6;
  --ink-soft: #d5dceb;
  --line: #5a6890;
  --card: #323c56;
  --accent: #b39dff;
  --accent-2: #4fd8e8;
}

* {
  box-sizing: border-box;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  opacity: 0.85;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
[role="button"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  min-height: 100vh;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 18vh 24px 10vh;
}

h1 {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 64px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  color: var(--ink);
  background: linear-gradient(100deg, var(--ink) 0%, var(--accent) 60%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 15px;
  color: var(--ink-muted);
  margin: 0 0 28px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
}

.pill:hover {
  border-color: var(--ink-soft);
}


.demo-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 40px;
  font-size: 14px;
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.demo-link:hover {
  color: var(--ink);
}

/* Demo page */

.demo {
  max-width: 760px;
  margin: 0 auto;
  padding: 10vh 24px 12vh;
}

.demo .back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-bottom: 40px;
  font-size: 13px;
  color: var(--ink-muted);
  text-decoration: none;
}

.demo .back:hover {
  color: var(--ink);
}


.demo h1 {
  font-size: 44px;
  margin-bottom: 8px;
}

.demo .subtitle {
  font-size: 15px;
  color: var(--ink-muted);
  margin: 0 0 10px;
  max-width: 56ch;
  line-height: 1.6;
}

.demo .subtitle:last-of-type {
  margin-bottom: 32px;
}

.demo-list {
  list-style: none;
  margin: 0 0 48px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-card {
  display: block;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  text-decoration: none;
  color: var(--ink);
}

.demo-card:hover {
  border-color: var(--accent);
}

.demo-card-title {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 22px;
  margin-bottom: 6px;
  color: var(--ink);
}

.demo-card-desc {
  display: block;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-muted);
  max-width: 60ch;
}

.live-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 56px;
}

.live-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
}

.live-links a:hover {
  background: var(--accent);
  color: var(--bg);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

section {
  margin-bottom: 44px;
}

section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.005em;
  margin: 0 0 6px;
  color: var(--ink);
}

.source-link {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-style: normal;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-muted);
  text-decoration: none;
  margin-left: 8px;
  vertical-align: middle;
}

.source-link:hover {
  color: var(--accent-2);
}

section .step-num {
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
  display: block;
}

section p {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 0 10px;
  max-width: 64ch;
}

section ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

section li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

code {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.92em;
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
}

.divider {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0 0 44px;
}

.diagram-wrap {
  margin: 20px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  padding: 8px 4px;
}

.diagram-wrap svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 480px;
}

@media (max-width: 560px) {
  .diagram-wrap svg {
    min-width: 0;
  }
}

.diagram-wrap .lane-fill, .hero-flow .lane-fill {
  fill: var(--bg);
}

.diagram-wrap .box-rect, .hero-flow .box-rect {
  fill: var(--card);
  stroke: var(--line);
  stroke-width: 1.25;
}

.diagram-wrap .box-rect.accent, .hero-flow .box-rect.accent {
  stroke: var(--accent);
}

.diagram-wrap .box-title, .hero-flow .box-title {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 12.5px;
  font-weight: 500;
  fill: var(--ink);
}

.diagram-wrap .box-sub, .hero-flow .box-sub {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 10.5px;
  fill: var(--ink-muted);
}

.diagram-wrap .lane-label, .hero-flow .lane-label {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  fill: var(--ink-muted);
}

.diagram-wrap .flow-line, .hero-flow .flow-line {
  stroke: var(--line);
  stroke-width: 1.5;
  fill: none;
}

.diagram-wrap .flow-line.loop, .hero-flow .flow-line.loop {
  stroke: var(--accent-2);
  stroke-width: 1.25;
  stroke-dasharray: 3 3;
}

.diagram-wrap .loop-label, .hero-flow .loop-label {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 10px;
  fill: var(--accent-2);
}

.diagram-wrap .arrow-fill, .hero-flow .arrow-fill {
  fill: var(--ink-muted);
}

.diagram-wrap .arrow-fill.accent, .hero-flow .arrow-fill.accent {
  fill: var(--accent);
}

footer {
  margin-top: 64px;
  font-size: 12px;
  color: var(--ink-muted);
}

footer a {
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

footer a:hover {
  color: var(--ink);
}

/* Agent control plane: hero + nav + panels */

.acp-hero {
  margin-bottom: 40px;
}

.acp-summary {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0 0 24px;
}

.acp-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.acp-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 13.5px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}

.acp-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.acp-cta.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.acp-cta.primary:hover {
  opacity: 0.9;
  color: var(--bg);
}

.value-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 8px;
}

@media (max-width: 720px) {
  .value-cards {
    grid-template-columns: 1fr;
  }
}

.value-card {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
}

.value-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 19px;
  margin: 0 0 8px;
  color: var(--ink);
}

.value-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-muted);
  margin: 0;
}

.acp-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 0;
  margin: 0 0 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.acp-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-muted);
  text-decoration: none;
  background: transparent;
  border: 1px solid transparent;
}

.acp-nav a:hover {
  color: var(--ink);
}

.acp-nav a[aria-current="true"] {
  color: var(--accent);
  border-color: var(--accent);
}

.panel-overlay {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 10;
}

.panel-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.panel {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(640px, 100vw);
  background: var(--bg);
  border-left: 1px solid var(--line);
  transform: translateX(100%);
  transition: transform 220ms ease;
  z-index: 11;
  overflow-y: auto;
  padding: 48px 32px 64px;
}

.panel.open {
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .panel,
  .panel-overlay {
    transition: none;
  }
}

.panel-close {
  position: sticky;
  top: 0;
  display: inline-block;
  margin-bottom: 24px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
}

.panel-close:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}

.panel-body section {
  margin-bottom: 32px;
}

.panel-sub {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  padding: 4px 16px;
  margin: 16px 0;
}

.panel-sub summary {
  cursor: pointer;
  padding: 12px 0;
  font-size: 13.5px;
  color: var(--ink);
  font-weight: 500;
}

.panel-sub[open] summary {
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}

@media (max-width: 560px) {
  .panel {
    width: 100vw;
    padding: 32px 20px 48px;
  }
}

/* Agent control plane: concept zone */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  color: var(--ink-muted);
  margin-bottom: 10px;
}

.badge-live {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.badge-live::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
}

.concept-section {
  margin: 64px 0;
}

.concept-section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 28px;
  margin: 0 0 12px;
  color: var(--ink);
}

.concept-section > p.lede {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 64ch;
  margin: 0 0 24px;
}

.concept-hero {
  margin: 20px 0 48px;
}

.concept-hero h1 {
  font-size: 56px;
}

.hero-flow {
  margin-top: 32px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  padding: 8px 4px;
  overflow-x: auto;
}

.hero-flow svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 480px;
}

.hero-flow .flow-line.animated {
  stroke-dasharray: 4 4;
  animation: flow-dash 1.6s linear infinite;
}

@keyframes flow-dash {
  to {
    stroke-dashoffset: -16;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-flow .flow-line.animated {
    animation: none;
  }
}

.hero-flow-caption {
  font-size: 12px;
  color: var(--ink-muted);
  margin-top: 10px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.lede-spaced {
  margin-top: 20px;
}

@media (max-width: 720px) {
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .capability-grid {
    grid-template-columns: 1fr;
  }
}

.capability-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
}

.capability-card h3 {
  font-size: 14px;
  font-weight: 500;
  margin: 0 0 6px;
  color: var(--ink);
}

.capability-card p {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-muted);
  margin: 0;
}

.compare-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compare-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 640px) {
  .compare-pair {
    grid-template-columns: 1fr;
  }
}

.compare-without,
.compare-with {
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.55;
  border: 1px solid var(--line);
}

.compare-without {
  background: var(--bg);
  color: var(--ink-muted);
}

.compare-with {
  background: var(--card);
  border-color: var(--accent);
  color: var(--ink-soft);
}

.compare-label {
  display: block;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
  opacity: 0.75;
}

.lifecycle-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 20px 14px;
}

.lifecycle-stage {
  border-top: 2px solid var(--accent);
  padding-top: 12px;
}

.lifecycle-stage .stage-num {
  font-size: 11px;
  color: var(--ink-muted);
  display: block;
  margin-bottom: 4px;
}

.lifecycle-stage h3 {
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 4px;
  color: var(--ink);
}

.lifecycle-stage p {
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-muted);
  margin: 0;
}

.capability-group {
  margin-bottom: 20px;
}

.capability-group h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  margin: 0 0 10px;
}

.bridge-section {
  margin: 56px 0 0;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.section-divider {
  font-size: 12.5px;
  color: var(--ink-muted);
  margin: 0 0 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.section-divider a {
  color: var(--ink-muted);
}

.impact-section {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.impact-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.impact-tags span {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--card);
}

.bridge-section-standout {
  margin: 40px 0 56px;
  padding: 32px;
  border: 1px solid var(--accent);
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 0 0 1px rgb(0 0 0 / 0.02);
}

@media (max-width: 640px) {
  .bridge-section-standout {
    padding: 24px 18px;
  }
}

.nav-intro {
  font-size: 13px;
  color: var(--ink-muted);
  margin: 24px 0 0;
}

.shot {
  margin: 28px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--card);
  cursor: zoom-in;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--ink-muted);
  border-top: 1px solid var(--line);
}

.shot-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgb(0 0 0 / 0.6);
  padding: 24px;
  overflow-y: auto;
}

.shot-modal.open {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.shot-modal-panel {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  max-width: 960px;
  width: 100%;
  margin: auto;
  overflow: hidden;
}

.shot-modal-panel img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--line);
}

.shot-modal-body {
  padding: 24px 28px 28px;
}

.shot-modal-body h3 {
  margin: 0 0 4px;
  font-size: 18px;
}

.shot-modal-body .shot-purpose {
  font-size: 13px;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 12px;
}

.shot-modal-body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.shot-modal-close {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: flex-end;
  padding: 12px 16px 0;
}

.shot-modal-close button {
  font: inherit;
  font-size: 13px;
  color: var(--ink-muted);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
}

.shot-modal-close button:hover {
  color: var(--ink);
  border-color: var(--accent);
}

@media (max-width: 640px) {
  .shot-modal {
    padding: 0;
  }
  .shot-modal-panel {
    border-radius: 0;
    min-height: 100%;
  }
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.shot-grid .shot {
  margin: 0;
}

.shot-grid .shot figcaption {
  font-size: 12px;
}

@media (max-width: 720px) {
  .shot-grid {
    grid-template-columns: 1fr;
  }
}