:root {
  color-scheme: dark;
  --bg: #050816;
  --bg-2: #081127;
  --panel: rgba(10, 17, 34, 0.76);
  --panel-strong: rgba(12, 20, 41, 0.94);
  --line: rgba(120, 150, 220, 0.16);
  --line-strong: rgba(100, 228, 255, 0.28);
  --text: #f5f7fb;
  --muted: #99a8c7;
  --cyan: #6feaff;
  --teal: #18c6dd;
  --amber: #ffc65a;
  --violet: #8993ff;
  --danger: #ff8f8f;
  --shadow: 0 40px 120px rgba(0, 0, 0, 0.4);
  --radius-xl: 2rem;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --page-width: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at 12% 18%, rgba(111, 234, 255, 0.18), transparent 30%),
    radial-gradient(circle at 85% 20%, rgba(137, 147, 255, 0.22), transparent 32%),
    radial-gradient(circle at 50% 100%, rgba(24, 198, 221, 0.16), transparent 44%),
    linear-gradient(180deg, #040610 0%, #050816 45%, #071127 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.4), transparent 72%);
}

body::after {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18) 0 1px, transparent 1px),
    radial-gradient(circle at 80% 22%, rgba(255, 255, 255, 0.14) 0 1px, transparent 1px),
    radial-gradient(circle at 38% 72%, rgba(255, 255, 255, 0.16) 0 1.2px, transparent 1.2px),
    radial-gradient(circle at 74% 80%, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px);
  opacity: 0.55;
}

img {
  display: block;
  max-width: 100%;
}

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

button,
a,
summary {
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    opacity 180ms ease,
    box-shadow 180ms ease;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 30;
  background: #fff;
  color: #000;
  padding: 0.75rem 1rem;
  border-radius: 999px;
}

.skip-link:focus {
  top: 1rem;
}

.page-shell {
  width: min(var(--page-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 4rem;
}

.panel {
  background: linear-gradient(180deg, rgba(11, 18, 35, 0.86), rgba(8, 14, 28, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
  padding: 1rem 1.15rem;
  border: 1px solid transparent;
}

.topbar.is-scrolled {
  background: rgba(5, 9, 19, 0.74);
  border-color: rgba(111, 234, 255, 0.12);
  backdrop-filter: blur(24px);
}

.brand {
  max-width: 14rem;
  flex: 0 0 auto;
}

.brand img {
  width: 100%;
  height: auto;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(8, 14, 27, 0.78);
  color: var(--text);
  padding: 0.8rem 1rem;
  border-radius: 999px;
  font-family: "Chakra Petch", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem;
}

.nav a {
  padding: 0.78rem 1.05rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover,
.nav a.is-active {
  color: var(--text);
  border-color: rgba(111, 234, 255, 0.2);
  background: rgba(111, 234, 255, 0.08);
}

.nav-cta {
  background: linear-gradient(135deg, rgba(111, 234, 255, 0.2), rgba(137, 147, 255, 0.16));
  border-color: rgba(111, 234, 255, 0.24);
  color: var(--text);
}

.section {
  margin-top: 5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.hero-visual {
  position: relative;
  overflow: hidden;
  min-height: 100%;
}

.hero-copy {
  padding: 2.6rem;
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -7rem;
  top: -6rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(111, 234, 255, 0.28), transparent 70%);
}

.eyebrow,
.mono,
.stat-label,
.stack-label,
.note-kicker,
.resource-type,
.timeline-date {
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.82rem;
}

h1,
h2,
h3,
summary {
  margin: 0;
  font-family: "Chakra Petch", sans-serif;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 11ch;
  font-size: clamp(2.9rem, 5vw, 5rem);
  line-height: 0.95;
}

h2 {
  max-width: 14ch;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.98;
}

h3 {
  font-size: 1.3rem;
  line-height: 1.05;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.hero-dek {
  max-width: 58ch;
  margin-top: 1.15rem;
  font-size: 1.05rem;
}

.hero-note {
  max-width: 52ch;
  margin-top: 1rem;
  color: #bed0f7;
}

.hero-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-actions {
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.4rem;
  padding: 0.95rem 1.35rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 600;
}

.button:hover,
.card-actions a:hover,
.resource-card:hover,
.nav-cta:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #02121a;
  background: linear-gradient(135deg, var(--cyan), #b6fff2);
  box-shadow: 0 18px 32px rgba(111, 234, 255, 0.24);
}

.button-secondary,
.card-actions a {
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.trust-strip a {
  padding: 0.65rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.9rem;
}

.trust-strip a:hover {
  color: var(--text);
  border-color: rgba(111, 234, 255, 0.24);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.7rem;
}

.stat-card {
  padding: 1rem 1.1rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-label {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-size: 0.72rem;
}

.stat-card strong {
  font-size: 1.05rem;
}

.hero-visual {
  padding: 2rem;
  display: grid;
  align-items: center;
}

.signal-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.orbital-ring {
  position: absolute;
  inset: auto;
  border-radius: 50%;
  border: 1px solid rgba(111, 234, 255, 0.16);
}

.orbital-ring-a {
  right: -2rem;
  top: 3rem;
  width: 24rem;
  height: 24rem;
}

.orbital-ring-b {
  left: 2rem;
  bottom: -5rem;
  width: 18rem;
  height: 18rem;
  border-color: rgba(255, 198, 90, 0.18);
}

.orbital-ring-c {
  right: 8rem;
  bottom: 2rem;
  width: 10rem;
  height: 10rem;
  border-color: rgba(137, 147, 255, 0.18);
}

.wave-bank {
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  display: flex;
  align-items: end;
  gap: 0.4rem;
  height: 12rem;
}

.wave-bank span {
  width: 0.55rem;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(111, 234, 255, 0.2), rgba(111, 234, 255, 0.9));
  animation: pulse-height 2.8s ease-in-out infinite;
}

.wave-bank span:nth-child(1) { height: 2rem; animation-delay: 0.1s; }
.wave-bank span:nth-child(2) { height: 4rem; animation-delay: 0.35s; }
.wave-bank span:nth-child(3) { height: 7rem; animation-delay: 0.65s; }
.wave-bank span:nth-child(4) { height: 5rem; animation-delay: 0.95s; }
.wave-bank span:nth-child(5) { height: 9rem; animation-delay: 1.2s; }
.wave-bank span:nth-child(6) { height: 6rem; animation-delay: 1.5s; }
.wave-bank span:nth-child(7) { height: 10rem; animation-delay: 1.8s; }
.wave-bank span:nth-child(8) { height: 4rem; animation-delay: 2s; }
.wave-bank span:nth-child(9) { height: 7rem; animation-delay: 2.25s; }

.stage-copy {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.2rem;
  align-content: end;
}

.stage-copy img {
  width: 6.2rem;
  height: 6.2rem;
}

.stack-card,
.note-card {
  padding: 1.2rem 1.25rem;
  border-radius: 1.4rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stack-label,
.note-kicker,
.timeline-date,
.resource-type {
  display: inline-block;
  margin-bottom: 0.65rem;
  font-size: 0.72rem;
  color: var(--cyan);
}

.stack-card strong {
  display: block;
  font-size: 1.35rem;
  line-height: 1.1;
}

.stack-card p {
  margin-top: 0.7rem;
}

.signal-list {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.025);
}

.signal-list span {
  color: var(--muted);
}

.signal-list strong {
  max-width: 16ch;
  text-align: right;
}

.section-heading {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.6rem;
}

.section-heading p {
  max-width: 70ch;
}

.model-grid,
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.model-card,
.resource-card,
.timeline-card {
  padding: 1.35rem;
}

.card-topline {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.pill-cyan {
  color: #00161c;
  background: linear-gradient(135deg, var(--cyan), #9ff8ff);
}

.pill-amber {
  color: #1f1300;
  background: linear-gradient(135deg, var(--amber), #ffe8a8);
}

.pill-slate {
  color: #d8def7;
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.mono {
  color: var(--muted);
  font-size: 0.72rem;
}

.model-card h3 {
  margin-bottom: 0.85rem;
}

.feature-list {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 1.15rem;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--cyan);
}

.card-actions {
  margin-top: auto;
}

.card-actions a {
  padding: 0.8rem 1rem;
  border-radius: 0.95rem;
  color: var(--text);
}

.capability-section {
  position: relative;
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 1rem;
}

.capability-table,
.capability-notes {
  padding: 1.35rem;
}

.cap-row {
  display: grid;
  grid-template-columns: 1.1fr minmax(140px, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cap-row:last-child {
  border-bottom: none;
}

.cap-name {
  font-weight: 600;
}

.cap-bar {
  position: relative;
  height: 0.65rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.cap-bar span {
  display: block;
  width: var(--fill);
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  border-radius: inherit;
}

.capability-notes {
  display: grid;
  gap: 1rem;
}

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

.timeline-card {
  min-height: 100%;
}

.timeline-date {
  color: var(--amber);
}

.timeline-card h3 {
  margin: 0 0 0.8rem;
}

.resource-card {
  display: grid;
  gap: 0.7rem;
}

.resource-card strong {
  font-family: "Chakra Petch", sans-serif;
  font-size: 1.2rem;
  line-height: 1.04;
}

.faq-list {
  display: grid;
  gap: 0.9rem;
}

.faq-list details {
  padding: 1.1rem 1.2rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding-right: 2rem;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 1.2rem;
  top: 1rem;
  color: var(--cyan);
  font-family: "IBM Plex Mono", monospace;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  margin-top: 0.85rem;
  max-width: 70ch;
}

.footer {
  margin-top: 5rem;
  padding: 1.6rem;
}

.footer-title {
  color: var(--text);
  font-family: "Chakra Petch", sans-serif;
  font-size: 1.35rem;
}

.footer p + p {
  margin-top: 0.9rem;
}

.footer-warning {
  color: #cbd7f0;
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
}

@keyframes pulse-height {
  0%,
  100% {
    transform: scaleY(0.75);
    opacity: 0.55;
  }

  50% {
    transform: scaleY(1.08);
    opacity: 1;
  }
}

@media (max-width: 1120px) {
  .timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .hero,
  .capability-layout,
  .model-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

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

  h1 {
    max-width: 13ch;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100%, calc(100% - 1rem));
  }

  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
    margin-bottom: 1rem;
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.5rem;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    width: 100%;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
  }

  .hero-copy,
  .hero-visual,
  .model-card,
  .resource-card,
  .timeline-card,
  .capability-table,
  .capability-notes,
  .footer {
    padding: 1.2rem;
  }

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

  .cap-row {
    grid-template-columns: 1fr;
  }

  .cap-row strong {
    justify-self: start;
  }

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

  .footer-meta {
    flex-direction: column;
  }
}