.experiment-page {
  background:
    radial-gradient(circle at 78% 12%, rgba(50, 200, 255, 0.12), transparent 26rem),
    radial-gradient(circle at 15% 24%, rgba(255, 122, 26, 0.12), transparent 30rem),
    var(--bg);
}

.experiment-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 clamp(4rem, 8vw, 6.5rem);
}

.experiment-hero::after {
  position: absolute;
  top: 5rem;
  right: max(1rem, calc((100vw - var(--max)) / 2));
  width: min(30vw, 340px);
  aspect-ratio: 1;
  border: 1px solid rgba(50, 200, 255, 0.15);
  border-radius: 50%;
  box-shadow:
    0 0 0 36px rgba(50, 200, 255, 0.025),
    0 0 0 72px rgba(255, 200, 87, 0.02);
  content: "";
  pointer-events: none;
}

.experiment-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6rem);
}

.experiment-intro h1 {
  max-width: 880px;
  margin-bottom: 1.4rem;
  font-size: clamp(2.8rem, 7vw, 6.4rem);
}

.truth-notice {
  max-width: 770px;
  margin: 1.8rem 0 0;
  border: 1px solid rgba(255, 200, 87, 0.38);
  border-radius: var(--radius-sm);
  background: rgba(255, 200, 87, 0.08);
  color: #f5dfae;
  padding: 1rem 1.15rem;
}

.truth-notice strong {
  color: var(--gold);
}

.experiment-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  color: var(--muted);
  font: 750 0.78rem "SFMono-Regular", Consolas, monospace;
}

.experiment-path span:not([aria-hidden]) {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.45rem 0.7rem;
}

.experiment-path span[aria-hidden] {
  color: var(--orange);
}

.agent-prompt {
  max-width: 760px;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.capability-panel {
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: linear-gradient(150deg, rgba(18, 25, 35, 0.96), rgba(8, 11, 17, 0.96));
  padding: clamp(1.3rem, 3vw, 1.8rem);
  box-shadow: var(--shadow);
}

.capability-state {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

.capability-light {
  width: 0.72rem;
  height: 0.72rem;
  margin-top: 0.34rem;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 14px rgba(255, 200, 87, 0.7);
}

.capability-state[data-webmcp-state="ready"] .capability-light {
  background: var(--green);
  box-shadow: 0 0 14px rgba(88, 214, 141, 0.7);
}

.capability-state[data-webmcp-state="unavailable"] .capability-light,
.capability-state[data-webmcp-state="error"] .capability-light {
  background: var(--red);
  box-shadow: 0 0 14px rgba(255, 107, 107, 0.65);
}

.capability-state strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.capability-state p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.capability-facts {
  margin: 0;
}

.capability-facts div {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 0.8rem;
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 0;
  font-size: 0.8rem;
}

.capability-facts div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.capability-facts dt {
  color: var(--faint);
  font-weight: 800;
  text-transform: uppercase;
}

.capability-facts dd {
  min-width: 0;
  margin: 0;
  color: var(--text);
  overflow-wrap: anywhere;
  text-align: right;
}

.approval-section[hidden] {
  display: none;
}

.callback-section[hidden],
.rendezvous-section[hidden] {
  display: none;
}

.experiment-page[data-callback-mode="true"] .skip-link,
.experiment-page[data-callback-mode="true"] .site-header,
.experiment-page[data-callback-mode="true"] main > :not(.callback-section),
.experiment-page[data-callback-mode="true"] .site-footer {
  display: none;
}

.callback-section,
.handoff-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: clamp(1.25rem, 5vw, 4rem) 0;
}

.callback-shell {
  width: 100%;
}

.callback-card,
.handoff-card {
  width: min(100%, 760px);
  margin: 0 auto;
  border: 1px solid rgba(50, 200, 255, 0.38);
  border-radius: 24px;
  background:
    linear-gradient(145deg, rgba(50, 200, 255, 0.08), rgba(255, 200, 87, 0.05)),
    rgba(8, 11, 17, 0.97);
  padding: clamp(1.5rem, 5vw, 3rem);
  box-shadow: var(--shadow);
}

.callback-card h1,
.handoff-card h1 {
  margin: 0.65rem 0 1rem;
  font-size: clamp(1.8rem, 5vw, 3.3rem);
}

.callback-card > p:not(.section-kicker),
.handoff-card > p:not(.section-kicker) {
  color: var(--muted);
}

.callback-card .button {
  margin-top: 1.25rem;
  font: inherit;
  cursor: pointer;
}

.callback-section[data-callback-state="delivered"] .callback-card,
.handoff-page[data-handoff-state="opening"] .handoff-card {
  border-color: rgba(88, 214, 141, 0.58);
}

.callback-section[data-callback-state="failed"] .callback-card,
.handoff-page[data-handoff-state="failed"] .handoff-card {
  border-color: rgba(255, 107, 107, 0.58);
}

.handoff-shell {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
}

.handoff-card img {
  margin-bottom: 1.2rem;
}

.approval-section {
  padding-top: clamp(3.5rem, 7vw, 6rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}

.approval-card {
  border: 1px solid rgba(255, 200, 87, 0.45);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 200, 87, 0.09), rgba(50, 200, 255, 0.06)),
    rgba(8, 11, 17, 0.97);
  padding: clamp(1.4rem, 4vw, 2.5rem);
  box-shadow: var(--shadow);
}

.approval-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.approval-card[data-approval-state="approved"] {
  border-color: rgba(88, 214, 141, 0.6);
}

.approval-card[data-approval-state="rejected"],
.approval-card[data-approval-state="cancelled"] {
  border-color: rgba(255, 107, 107, 0.58);
}

.approval-header {
  max-width: 800px;
}

.approval-header .section-kicker {
  margin-bottom: 0.55rem;
}

.approval-header h2 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.65rem, 4vw, 2.7rem);
}

.approval-header p:last-child {
  margin: 0;
  color: var(--muted);
}

.approval-details {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 1.8rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--line);
}

.approval-details div {
  min-width: 0;
  background: rgba(9, 13, 19, 0.98);
  padding: 1rem;
}

.approval-details .approval-destination {
  grid-column: span 2;
}

.approval-details dt {
  margin-bottom: 0.35rem;
  color: var(--faint);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.approval-details dd {
  margin: 0;
  color: var(--text);
  font-weight: 750;
  overflow-wrap: anywhere;
}

.approval-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.approval-actions .button {
  font: inherit;
  cursor: pointer;
}

.approval-actions .button:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.approval-actions .button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.6);
  opacity: 0.55;
  transform: none;
}

.approval-status {
  margin: 1rem 0 0;
  color: var(--muted);
  font: 700 0.82rem/1.55 "SFMono-Regular", Consolas, monospace;
}

.rendezvous-section {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.rendezvous-card {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  border: 1px solid rgba(50, 200, 255, 0.34);
  border-radius: 24px;
  background: rgba(8, 11, 17, 0.92);
  padding: clamp(1.4rem, 4vw, 2.4rem);
}

.rendezvous-card h2 {
  margin: 0.55rem 0 0.8rem;
  font-size: clamp(1.5rem, 4vw, 2.35rem);
}

.rendezvous-card p:last-child {
  margin: 0;
  color: var(--muted);
}

.rendezvous-details {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.rendezvous-details div {
  display: grid;
  grid-template-columns: minmax(90px, 0.35fr) minmax(0, 1fr);
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding: 0.9rem 1rem;
}

.rendezvous-details div:last-child {
  border-bottom: 0;
}

.rendezvous-details dt {
  color: var(--faint);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rendezvous-details dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  text-align: right;
}

.rendezvous-section[data-rendezvous-state="verified"] .rendezvous-card {
  border-color: rgba(88, 214, 141, 0.58);
}

.rendezvous-section[data-rendezvous-state="failed"] .rendezvous-card,
.rendezvous-section[data-rendezvous-state="expired"] .rendezvous-card,
.rendezvous-section[data-rendezvous-state="rejected"] .rendezvous-card {
  border-color: rgba(255, 107, 107, 0.52);
}

.trace-section {
  padding-top: clamp(3.5rem, 7vw, 6rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}

.trace-panel {
  overflow: hidden;
  border: 1px solid rgba(50, 200, 255, 0.32);
  border-radius: 24px;
  background: rgba(4, 7, 11, 0.94);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 30px 90px rgba(0, 0, 0, 0.4);
}

.trace-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(50, 200, 255, 0.08), rgba(255, 122, 26, 0.04));
  padding: clamp(1.3rem, 3vw, 2rem);
}

.trace-header .section-kicker {
  margin-bottom: 0.55rem;
}

.trace-header h2 {
  margin: 0;
  font: 850 clamp(1.35rem, 3vw, 2rem) "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.04em;
}

.trace-mode {
  flex: 0 0 auto;
  border: 1px solid rgba(50, 200, 255, 0.35);
  border-radius: 999px;
  color: #9be7ff;
  padding: 0.35rem 0.6rem;
  font: 800 0.65rem "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.08em;
}

.trace-log {
  min-height: 190px;
  margin: 0;
  padding: clamp(1.3rem, 3vw, 2rem);
  list-style: none;
  counter-reset: none;
}

.trace-log li {
  color: #d7e0ea;
  font: 650 0.86rem/1.65 "SFMono-Regular", Consolas, monospace;
  overflow-wrap: anywhere;
}

.trace-log li + li {
  margin-top: 0.55rem;
}

.trace-log li::before {
  color: var(--blue);
  content: "> ";
}

.trace-log li[data-kind="success"] {
  color: #a4efc2;
}

.trace-log li[data-kind="error"],
.trace-log li[data-kind="unavailable"] {
  color: #ffb1b1;
}

.trace-placeholder {
  color: var(--faint) !important;
}

.trace-note {
  margin: 0;
  border-top: 1px solid var(--line);
  color: var(--faint);
  padding: 1rem clamp(1.3rem, 3vw, 2rem);
  font-size: 0.78rem;
}

.gate-grid .card {
  min-height: 230px;
}

.boundary-copy {
  margin-top: 1.5rem;
}

@media (max-width: 900px) {
  .experiment-grid {
    grid-template-columns: 1fr;
  }

  .capability-panel {
    max-width: 620px;
  }

  .rendezvous-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .experiment-hero {
    padding-top: 3.5rem;
  }

  .experiment-path span[aria-hidden] {
    display: none;
  }

  .experiment-path span:not([aria-hidden]) {
    width: 100%;
    border-radius: var(--radius-sm);
  }

  .trace-header {
    flex-direction: column;
  }

  .trace-mode {
    align-self: flex-start;
  }

  .approval-details {
    grid-template-columns: 1fr;
  }

  .approval-details .approval-destination {
    grid-column: auto;
  }

  .approval-actions {
    flex-direction: column;
  }

  .approval-actions .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .experiment-page *,
  .experiment-page *::before,
  .experiment-page *::after {
    scroll-behavior: auto !important;
  }
}