:root {
  --bg: #07111a;
  --bg-deep: #03070c;
  --panel: rgba(10, 19, 30, 0.72);
  --panel-strong: rgba(9, 16, 24, 0.92);
  --panel-soft: rgba(255, 255, 255, 0.035);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f3f1ea;
  --muted: #9fa9b7;
  --accent: #c7ff62;
  --accent-soft: rgba(199, 255, 98, 0.12);
  --gold: #f7c980;
  --cyan: #79d5ff;
  --danger: #ff8f85;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-pill: 999px;
  --shell: min(1220px, calc(100vw - 44px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  overflow-x: hidden;
  font-family: "Avenir Next", "IBM Plex Sans", "PingFang SC", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at 12% 18%, rgba(121, 213, 255, 0.12), transparent 22%),
    radial-gradient(circle at 84% 14%, rgba(247, 201, 128, 0.12), transparent 24%),
    radial-gradient(circle at 50% 60%, rgba(199, 255, 98, 0.06), transparent 30%),
    linear-gradient(180deg, #050a10 0%, #07111a 30%, #04080d 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 100%);
  pointer-events: none;
  z-index: 0;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.page-noise,
.halo {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.page-noise {
  z-index: 0;
  opacity: 0.09;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.3) 0 1px, transparent 1px),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.25) 0 1px, transparent 1px);
  background-size: 32px 32px, 40px 40px;
}

.halo {
  filter: blur(95px);
  opacity: 0.9;
  z-index: 0;
}

.halo-a {
  background: radial-gradient(circle, rgba(121, 213, 255, 0.18), transparent 58%);
  transform: translate(-30%, -18%);
}

.halo-b {
  background: radial-gradient(circle, rgba(247, 201, 128, 0.16), transparent 58%);
  transform: translate(38%, -8%);
}

.halo-c {
  background: radial-gradient(circle, rgba(199, 255, 98, 0.14), transparent 60%);
  transform: translate(0%, 42%);
}

.topbar,
main {
  position: relative;
  z-index: 1;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.topbar {
  width: var(--shell);
  margin: 18px auto 0;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  background: rgba(6, 11, 18, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  overflow: hidden;
  background: #dfe4ef;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-copy strong,
h1,
h2,
h3,
.command-deck strong,
.hero-metrics strong,
.risk-tier strong {
  font-family: "Iowan Old Style", "Baskerville", "Palatino Linotype", "Songti SC", serif;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.brand-copy em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.8rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a {
  transition: color 180ms ease;
}

.nav a:hover,
.topbar-link:hover {
  color: var(--text);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-link,
.lang-switch {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.topbar-link {
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.lang-switch {
  display: inline-flex;
  padding: 4px;
  border-radius: var(--radius-pill);
}

.lang-button {
  min-width: 50px;
  min-height: 34px;
  border: 0;
  color: var(--muted);
  border-radius: var(--radius-pill);
  background: transparent;
  font: inherit;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.lang-button.is-active {
  color: #091019;
  background: linear-gradient(135deg, var(--accent), #fff6c5);
}

.hero {
  min-height: calc(100vh - 110px);
  padding: 94px 0 70px;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 42px;
  align-items: center;
}

.section-grid,
#engines,
#safety,
#product,
#deploy,
#manual,
#cta {
  padding: 54px 0 112px;
}

.section-kicker {
  margin: 0 0 14px;
  color: var(--accent);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
}

h2 {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(2.1rem, 4.6vw, 4.1rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.6rem;
  line-height: 1;
}

p {
  margin: 0;
}

.hero-lead,
.section-head,
.thesis-card p,
.engine-card p,
.pro-band p,
.stack-board p,
.timeline p,
.cta-panel p {
  color: var(--muted);
  line-height: 1.72;
  font-size: 1rem;
}

.hero-lead {
  max-width: 660px;
  margin-top: 22px;
  font-size: 1.08rem;
}

.hero-actions,
.cta-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.button {
  min-height: 50px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--accent);
  font-size: 0.95rem;
}

.text-link:hover {
  color: #efffd0;
}

.button-primary {
  color: #081018;
  background: linear-gradient(135deg, var(--accent), #fff1bf);
  box-shadow: 0 16px 40px rgba(199, 255, 98, 0.18);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.045);
}

.hero-metrics {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.hero-metrics article,
.thesis-card,
.engine-card,
.provider-grid article,
.timeline article,
.cta-panel,
.stack-board article,
.risk-panel,
.pro-band,
.safety-steps article {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02)),
    var(--panel);
  box-shadow: var(--shadow);
}

.hero-metrics article {
  padding: 18px 16px;
  border-radius: 22px;
}

.hero-metrics strong {
  display: block;
  margin-bottom: 6px;
  font-size: 2rem;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.hero-stage {
  position: relative;
}

.command-deck {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at top right, rgba(199, 255, 98, 0.14), transparent 28%),
    radial-gradient(circle at left center, rgba(121, 213, 255, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015)),
    rgba(6, 12, 20, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.command-deck::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.deck-topline,
.deck-balance,
.engine-rail article header,
.engine-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.deck-topline {
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.pulse-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(199, 255, 98, 0.45);
  animation: pulse 1.8s infinite;
}

.deck-balance {
  margin-top: 28px;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.deck-balance small {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.8rem;
}

.deck-balance strong {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 0.92;
}

.engine-rail {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.engine-rail article {
  padding: 16px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(255, 255, 255, 0.025);
}

.engine-rail article header span,
.card-index {
  color: var(--accent);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.engine-rail p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.rail-bar {
  margin-top: 14px;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.rail-bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
}

.engine-rail em {
  display: block;
  margin-top: 10px;
  font-style: normal;
  color: var(--text);
}

.console-lines {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-family: "SFMono-Regular", "Menlo", "Monaco", monospace;
  font-size: 0.88rem;
  line-height: 1.7;
}

.console-lines p + p {
  margin-top: 4px;
}

.console-lines span {
  color: var(--accent);
}

.success {
  color: #a0ffc4;
}

.accent {
  color: var(--gold);
}

.section-head {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
}

.thesis-grid,
.engine-grid,
.provider-grid,
.timeline,
.surface-grid,
.deploy-grid,
.manual-grid,
.safety-grid {
  display: grid;
  gap: 18px;
}

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

.thesis-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.thesis-card span,
.engine-tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 0.82rem;
}

.thesis-card p {
  margin-top: 16px;
}

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

.engine-card {
  min-height: 100%;
  padding: 26px;
  border-radius: 28px;
}

.card-sleep {
  background:
    radial-gradient(circle at top left, rgba(121, 213, 255, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(8, 17, 27, 0.9);
}

.card-alpha {
  background:
    radial-gradient(circle at top left, rgba(247, 201, 128, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(8, 17, 27, 0.9);
}

.card-yield {
  background:
    radial-gradient(circle at top left, rgba(199, 255, 98, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(8, 17, 27, 0.9);
}

.engine-card .engine-tag,
.engine-card p,
.engine-card ul,
.engine-meta {
  margin-top: 16px;
}

.engine-card ul {
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.65;
}

.engine-card li + li {
  margin-top: 8px;
}

.engine-meta {
  color: var(--text);
  font-size: 0.86rem;
}

.pro-band {
  margin-top: 22px;
  padding: 28px;
  border-radius: 30px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  align-items: center;
}

.stack-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stack-board article {
  padding: 24px;
  border-radius: 28px;
}

.stack-board span,
.provider-grid small {
  color: var(--accent);
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.stack-board strong {
  display: block;
  margin-top: 16px;
  font-size: 1.35rem;
  line-height: 1.2;
}

.stack-board p {
  margin-top: 14px;
}

.stack-focus {
  position: relative;
  overflow: hidden;
}

.stack-focus::after {
  content: "";
  position: absolute;
  inset: auto -18% -24% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(199, 255, 98, 0.15), transparent 68%);
}

.provider-grid {
  margin-top: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.provider-grid article {
  padding: 20px;
  border-radius: 22px;
}

.provider-grid strong {
  display: block;
  margin-top: 12px;
  font-size: 1.2rem;
}

.provider-grid span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.safety-grid {
  grid-template-columns: 1.18fr 0.82fr;
  align-items: start;
}

.safety-steps {
  display: grid;
  gap: 14px;
}

.safety-steps article {
  padding: 18px 20px;
  border-radius: 22px;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 4px 14px;
  align-items: center;
}

.safety-steps span {
  grid-row: span 2;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0b121a;
  background: linear-gradient(135deg, var(--accent), #fff1bf);
  font-size: 0.84rem;
  font-weight: 700;
}

.safety-steps strong {
  font-size: 1rem;
}

.safety-steps em {
  font-style: normal;
  color: var(--muted);
  line-height: 1.55;
}

.risk-panel {
  padding: 24px;
  border-radius: 28px;
}

.risk-tier + .risk-tier {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.risk-tier span {
  color: var(--muted);
}

.risk-tier strong {
  display: block;
  margin-top: 8px;
  font-size: 3rem;
  line-height: 0.92;
}

.risk-tier em {
  display: block;
  margin-top: 10px;
  font-style: normal;
  color: var(--muted);
  line-height: 1.6;
}

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

.timeline article {
  padding: 24px;
  border-radius: 24px;
}

.timeline span {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
}

.timeline h3 {
  margin-top: 18px;
  font-size: 1.35rem;
}

.timeline p {
  margin-top: 12px;
}

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

.surface-card,
.deploy-card,
.manual-card,
.code-block {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02)),
    var(--panel);
  box-shadow: var(--shadow);
}

.surface-card,
.deploy-card,
.manual-card {
  padding: 24px;
  border-radius: 28px;
}

.surface-large {
  background:
    radial-gradient(circle at top right, rgba(121, 213, 255, 0.12), transparent 28%),
    radial-gradient(circle at left center, rgba(199, 255, 98, 0.12), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02)),
    rgba(8, 17, 27, 0.92);
}

.surface-head span {
  color: var(--accent);
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.surface-head strong {
  display: block;
  margin-top: 14px;
  font-family: "Iowan Old Style", "Baskerville", "Palatino Linotype", "Songti SC", serif;
  font-size: 1.5rem;
  line-height: 1.15;
}

.surface-card p,
.deploy-card p,
.manual-card p {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.68;
}

.surface-console,
.code-block {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 20px;
  font-family: "SFMono-Regular", "Menlo", "Monaco", monospace;
  font-size: 0.9rem;
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.03);
}

.code-block {
  display: inline-flex;
  max-width: 100%;
  overflow: auto;
}

.code-block code {
  white-space: nowrap;
}

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

.deploy-card span {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
}

.cta-panel {
  padding: 34px;
  border-radius: 34px;
  background:
    radial-gradient(circle at top right, rgba(247, 201, 128, 0.12), transparent 25%),
    radial-gradient(circle at left center, rgba(199, 255, 98, 0.1), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    rgba(6, 12, 18, 0.92);
}

.cta-panel h2,
.cta-panel p {
  max-width: 930px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.floating-card {
  transition: transform 240ms ease-out;
  will-change: transform;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(199, 255, 98, 0.4);
  }

  70% {
    box-shadow: 0 0 0 16px rgba(199, 255, 98, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(199, 255, 98, 0);
  }
}

@media (max-width: 1080px) {
  .hero,
  .pro-band,
  .safety-grid {
    grid-template-columns: 1fr;
  }

  .hero-metrics,
  .thesis-grid,
  .engine-grid,
  .stack-board,
  .provider-grid,
  .timeline,
  .surface-grid,
  .deploy-grid,
  .manual-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .topbar {
    padding: 14px;
    border-radius: 28px;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.88rem;
  }

  h1 {
    max-width: none;
    font-size: clamp(2.6rem, 15vw, 4.4rem);
  }

  h2 {
    max-width: none;
  }

  .hero {
    padding-top: 72px;
  }

  .hero-metrics,
  .thesis-grid,
  .engine-grid,
  .stack-board,
  .provider-grid,
  .timeline,
  .surface-grid,
  .deploy-grid,
  .manual-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .shell,
  .topbar {
    width: min(100vw - 24px, 100%);
  }

  .brand-copy em,
  .topbar-link {
    display: none;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

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

  .command-deck,
  .cta-panel {
    padding: 22px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}