:root {
  --bg: #f4efe6;
  --bg-strong: #e8dbc6;
  --ink: #18222f;
  --muted: #566171;
  --line: rgba(24, 34, 47, 0.12);
  --panel: rgba(255, 250, 241, 0.72);
  --amber: #f1a84a;
  --amber-deep: #c97522;
  --blue: #1b5f86;
  --navy: #18364c;
  --sea: #4f798d;
  --cream: #fff8ef;
  --shadow: 0 24px 80px rgba(24, 34, 47, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(241, 168, 74, 0.22), transparent 28%),
    radial-gradient(circle at top right, rgba(27, 95, 134, 0.24), transparent 32%),
    linear-gradient(180deg, #f8f4ed 0%, #efe4d3 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(24, 34, 47, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 34, 47, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 90%);
}

.page-shell {
  width: min(1180px, calc(100vw - 40px));
  margin: 0 auto;
  padding-bottom: 64px;
}

.protocol-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 12px;
}

.protocol-chip {
  padding: 18px 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(24, 34, 47, 0.08);
  box-shadow: 0 18px 44px rgba(24, 34, 47, 0.08);
}

.protocol-chip span {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue);
  font-weight: 800;
  margin-bottom: 8px;
}

.protocol-chip strong {
  display: block;
  line-height: 1.4;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 28px 0 12px;
}

.brand {
  display: flex;
  flex-direction: column;
}

.brand-kicker,
.eyebrow,
.pill,
.caption-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 800;
}

.brand-name {
  font-family: "Fraunces", serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.topbar-link,
.primary-action,
.secondary-action {
  text-decoration: none;
}

.topbar-link {
  color: var(--navy);
  font-weight: 700;
}

.hero {
  padding: 0 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.pill {
  display: inline-flex;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(27, 95, 134, 0.1);
  color: var(--blue);
  margin-bottom: 18px;
}

.filing-badge {
  display: inline-grid;
  gap: 6px;
  padding: 14px 16px;
  margin: 0 0 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(24, 34, 47, 0.08);
  box-shadow: 0 16px 36px rgba(24, 34, 47, 0.08);
}

.filing-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  color: var(--blue);
}

.filing-badge strong {
  font-size: 1rem;
  color: var(--ink);
}

.filing-badge span:last-child {
  color: var(--muted);
  font-size: 0.92rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.04;
}

h1,
h2 {
  font-family: "Fraunces", serif;
}

h1 {
  font-size: clamp(3rem, 7vw, 5.2rem);
  max-width: 10ch;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  max-width: 14ch;
}

h3 {
  font-size: 1.2rem;
}

.hero-text,
.stage-description,
.muted,
.timeline-step p,
.problem-card p,
.patent-card p,
.hero-caption p {
  line-height: 1.7;
}

.hero-text {
  font-size: 1.08rem;
  max-width: 62ch;
  color: var(--muted);
  margin: 18px 0 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.primary-action,
.secondary-action,
.mode-button,
.responder-button,
.scenario-button {
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.primary-action:hover,
.secondary-action:hover,
.mode-button:hover,
.responder-button:hover,
.scenario-button:hover {
  transform: translateY(-1px);
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 800;
}

.primary-action {
  background: linear-gradient(135deg, var(--amber) 0%, var(--amber-deep) 100%);
  color: white;
  box-shadow: 0 16px 32px rgba(201, 117, 34, 0.28);
}

.secondary-action {
  color: var(--navy);
  border: 1px solid rgba(24, 54, 76, 0.18);
  background: rgba(255, 255, 255, 0.52);
}

.notes-link {
  margin-top: 14px;
  width: fit-content;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-points li {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid rgba(24, 34, 47, 0.08);
  font-size: 0.92rem;
}

.hero-visual {
  position: relative;
  padding: 18px;
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(255, 252, 246, 0.78), rgba(236, 224, 205, 0.78));
  box-shadow: var(--shadow);
  border: 1px solid rgba(24, 34, 47, 0.06);
}

.hero-visual img {
  display: block;
  width: 100%;
  border-radius: 24px;
  object-fit: cover;
}

.hero-caption {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 28px;
  padding: 16px 18px;
  border-radius: 20px;
  background: rgba(24, 34, 47, 0.78);
  color: white;
  backdrop-filter: blur(10px);
}

.hero-caption strong {
  font-family: "Fraunces", serif;
  display: block;
  font-size: 1.4rem;
  margin-top: 6px;
}

.hero-caption p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.section {
  padding: 42px 0;
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.eyebrow {
  color: var(--blue);
}

.glass-card {
  background: var(--panel);
  border: 1px solid rgba(24, 34, 47, 0.08);
  backdrop-filter: blur(16px);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.pill-inline {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(27, 95, 134, 0.1);
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro-grid,
.filing-grid,
.media-grid,
.product-grid,
.experience-grid,
.disclosure-grid,
.scenario-grid,
.teaser-grid {
  display: grid;
  gap: 20px;
}

.intro-grid {
  grid-template-columns: 1fr 1fr;
}

.media-grid {
  grid-template-columns: 1.15fr 0.85fr;
}

.product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.scenario-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.teaser-grid {
  grid-template-columns: 1fr;
}

.problem-card,
.patent-card,
.media-card,
.product-card,
.scenario-card,
.stage-panel,
.log-panel,
.disclosure-card,
.rules-card,
.architecture-card,
.teaser-card {
  padding: 24px;
}

.problem-card ul,
.stage-bullets,
.data-list,
.rules-list {
  margin: 16px 0 0;
  padding-left: 18px;
  line-height: 1.8;
  color: var(--muted);
}

.teaser-card h3 {
  margin: 14px 0 12px;
}

.teaser-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  max-width: 70ch;
}

.media-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.media-card-head a {
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 22px;
  background: rgba(24, 34, 47, 0.08);
  margin-bottom: 14px;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.audio-panel {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(24, 34, 47, 0.06);
}

.audio-panel p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.7;
}

.audio-panel audio {
  width: 100%;
}

.product-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.mode-selector,
.responder-tabs,
.scenario-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.scenario-switcher-wrap {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 18px;
  padding: 22px 24px;
  margin-bottom: 18px;
}

.switcher-copy p {
  margin: 8px 0 0;
}

.mode-button,
.responder-button,
.scenario-button {
  border: 1px solid rgba(24, 34, 47, 0.1);
  background: rgba(255, 255, 255, 0.54);
  color: var(--navy);
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 800;
  cursor: pointer;
}

.mode-button.active,
.responder-button.active,
.scenario-button.active {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: white;
  border-color: transparent;
}

.scenario-button {
  text-align: left;
  min-width: 146px;
}

.scenario-button strong,
.scenario-button span {
  display: block;
}

.scenario-button strong {
  font-size: 0.95rem;
}

.scenario-button span {
  margin-top: 4px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.78;
}

.experience-grid {
  grid-template-columns: 1.2fr 0.8fr;
}

.stage-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.stage-index {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  font-weight: 900;
  color: white;
  background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  box-shadow: 0 14px 28px rgba(201, 117, 34, 0.28);
}

.signal-visual {
  position: relative;
  width: min(360px, 100%);
  aspect-ratio: 1;
  margin: 28px auto 12px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(241, 168, 74, 0.22), transparent 42%),
    radial-gradient(circle at center, rgba(27, 95, 134, 0.12), transparent 64%);
}

.signal-core,
.signal-ring {
  position: absolute;
  inset: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.signal-core {
  width: 88px;
  height: 88px;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  box-shadow: 0 0 0 12px rgba(27, 95, 134, 0.08), 0 18px 48px rgba(24, 54, 76, 0.28);
}

.signal-ring {
  border: 1px solid rgba(27, 95, 134, 0.22);
  opacity: 0;
}

.ring-one {
  width: 160px;
  height: 160px;
}

.ring-two {
  width: 220px;
  height: 220px;
}

.ring-three {
  width: 288px;
  height: 288px;
}

.signal-visual.broadcast .signal-ring {
  animation: pulse 2.4s infinite ease-out;
}

.signal-visual.broadcast .ring-two {
  animation-delay: 0.4s;
}

.signal-visual.broadcast .ring-three {
  animation-delay: 0.8s;
}

@keyframes pulse {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.84);
  }
  24% {
    opacity: 0.95;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.08);
  }
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 8px rgba(241, 168, 74, 0.12);
}

.log-list {
  display: grid;
  gap: 12px;
}

.log-item {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(24, 34, 47, 0.06);
}

.log-item strong {
  display: block;
  margin-bottom: 6px;
}

.log-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.disclosure-grid {
  grid-template-columns: 1fr 0.9fr;
}

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

.filing-grid {
  grid-template-columns: 1fr 1fr;
}

.filing-card {
  padding: 24px;
}

.filing-card h3 {
  margin: 14px 0 12px;
}

.filing-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.closeout-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.closeout-card {
  padding: 24px;
}

.closeout-card h3 {
  margin: 14px 0 14px;
}

.closeout-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.closeout-list strong {
  color: var(--navy);
}

.architecture-card {
  position: relative;
  overflow: hidden;
}

.architecture-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -60% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(241, 168, 74, 0.2), transparent 70%);
}

.architecture-card h3 {
  margin-bottom: 10px;
}

.architecture-card p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.65;
}

.architecture-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.75;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.scenario-card {
  padding: 22px;
}

.scenario-card.active-scenario {
  border-color: rgba(27, 95, 134, 0.24);
  background: linear-gradient(180deg, rgba(255, 250, 241, 0.92), rgba(230, 240, 245, 0.88));
}

.scenario-card span {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(27, 95, 134, 0.1);
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.scenario-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.timeline-step {
  padding: 18px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(24, 34, 47, 0.08);
  box-shadow: 0 20px 50px rgba(24, 34, 47, 0.08);
}

.timeline-step span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--navy);
  color: white;
  font-weight: 900;
  margin-bottom: 12px;
}

.timeline-step p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 960px) {
  .hero-grid,
  .protocol-strip,
  .intro-grid,
  .media-grid,
  .product-grid,
  .experience-grid,
  .disclosure-grid,
  .scenario-grid,
  .scenario-switcher-wrap,
  .filing-grid,
  .architecture-grid,
  .closeout-grid,
  .timeline,
  .teaser-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 20px, 1180px);
  }

  .topbar {
    padding-top: 18px;
  }

  .hero,
  .section {
    padding-bottom: 28px;
  }

  .problem-card,
  .patent-card,
  .stage-panel,
  .log-panel,
  .disclosure-card,
  .rules-card,
  .architecture-card,
  .teaser-card {
    padding: 20px;
  }
}