:root {
  color-scheme: dark;
  --teal: #0d4f6c;
  --teal-dark: #0a3a52;
  --teal-mid: #0e7490;
  --ai-bg: #0a1622;
  --ai-bg-1: #0e2233;
  --ai-surface: #0f2040;
  --ai-surface-2: #13294d;
  --ai-line: #1e3a5f;
  --ai-accent: #22d3c8;
  --ai-signature: #2dd4ff;
  --ai-glow: rgba(45, 212, 255, 0.28);
  --ai-text-hi: #f4f8ff;
  --ai-text-md: #b7cbd3;
  --ai-text-lo: #6f8b96;
  --ai-live: #2bc392;
  --ai-redesign: #f0b429;
  --ai-danger: #ef4444;
  --violet: #818cf8;
  --shadow: 0 22px 54px rgba(2, 8, 23, 0.38);
  --sans: "Montserrat", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--sans);
  background:
    radial-gradient(ellipse 70% 48% at 74% -12%, rgba(45, 212, 255, 0.2), transparent 66%),
    radial-gradient(ellipse 55% 50% at 10% 14%, rgba(34, 211, 200, 0.14), transparent 62%),
    linear-gradient(180deg, #08121d 0%, var(--ai-bg) 42%, #07111c 100%);
  color: var(--ai-text-hi);
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(45, 212, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 255, 0.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.78), transparent 82%);
}

a {
  color: inherit;
}

.shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(30, 58, 95, 0.82);
  background: rgba(10, 22, 34, 0.82);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  border: 1px solid rgba(45, 212, 255, 0.38);
  background: radial-gradient(circle at 50% 50%, rgba(45, 212, 255, 0.12), rgba(15, 32, 64, 0.2));
  color: transparent;
  box-shadow: 0 0 28px -12px var(--ai-glow);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 4px solid transparent;
  transform: rotate(-38deg);
}

.brand-mark::before {
  border-top-color: #fff;
  border-right-color: #fff;
}

.brand-mark::after {
  inset: 9px;
  border-bottom-color: var(--ai-signature);
  border-left-color: var(--ai-signature);
  filter: drop-shadow(0 0 7px var(--ai-signature));
}

.brand-name {
  font-size: 18px;
  letter-spacing: 0;
}

.brand-ai {
  color: var(--ai-signature);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a,
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 11px;
  padding: 9px 15px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.nav-links a {
  color: var(--ai-text-md);
}

.nav-links a:hover {
  color: #fff;
  background: rgba(45, 212, 255, 0.08);
  border-color: rgba(45, 212, 255, 0.28);
}

.button {
  gap: 8px;
  background: linear-gradient(120deg, var(--teal), var(--teal-mid) 62%, var(--ai-signature) 150%);
  color: #fff;
  border-color: rgba(45, 212, 255, 0.32);
  box-shadow: 0 12px 30px -12px var(--ai-glow);
}

.button.secondary {
  background: var(--ai-surface);
  color: var(--ai-text-hi);
  border-color: var(--ai-line);
  box-shadow: none;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(45, 212, 255, 0.52);
  box-shadow: 0 16px 36px -14px var(--ai-glow);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 54px;
}

.hero::after {
  content: "";
  position: absolute;
  right: max(24px, calc((100vw - 1160px) / 2));
  top: 52px;
  width: 270px;
  height: 270px;
  border-radius: 50%;
  border: 1px solid rgba(45, 212, 255, 0.2);
  background:
    radial-gradient(circle, rgba(45, 212, 255, 0.16) 0 2px, transparent 3px),
    radial-gradient(circle, transparent 50%, rgba(45, 212, 255, 0.06) 51%, transparent 52%);
  background-size: 38px 38px, 100% 100%;
  opacity: 0.72;
  pointer-events: none;
}

.hero-grid,
.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--ai-signature);
  font: 700 12px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--ai-accent), var(--ai-signature));
  box-shadow: 0 0 12px var(--ai-glow);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  color: #fff;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 9px;
  color: #fff;
  font-size: 19px;
  line-height: 1.2;
}

.lead {
  max-width: 720px;
  color: var(--ai-text-md);
  font-size: 19px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 31px;
  border: 1px solid rgba(45, 212, 255, 0.22);
  border-radius: 20px;
  padding: 5px 10px;
  background: rgba(45, 212, 255, 0.08);
  color: var(--ai-text-md);
  font: 600 12px var(--mono);
}

.product-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ai-line);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(19, 41, 77, 0.96), rgba(15, 32, 64, 0.94));
  box-shadow: var(--shadow), 0 0 0 1px rgba(45, 212, 255, 0.12), 0 24px 70px -40px var(--ai-glow);
}

.product-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 72% 18%, rgba(45, 212, 255, 0.2), transparent 32%),
    linear-gradient(90deg, transparent, rgba(45, 212, 255, 0.06), transparent);
  pointer-events: none;
}

.frame-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  border-bottom: 1px solid var(--ai-line);
  padding: 0 15px;
  color: var(--ai-text-lo);
  font: 700 11px var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.dots {
  display: flex;
  gap: 6px;
}

.dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ai-line);
}

.dots span:first-child {
  background: var(--ai-signature);
  box-shadow: 0 0 9px var(--ai-signature);
}

.frame-body {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 16px;
}

.board-row,
.metric-row {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) 86px;
  gap: 12px;
  align-items: center;
  min-height: 58px;
  border: 1px solid var(--ai-line);
  border-radius: 12px;
  padding: 11px 12px;
  background: rgba(10, 22, 34, 0.78);
}

.metric-row {
  grid-template-columns: 1fr 90px;
}

.label {
  color: var(--ai-accent);
  font: 700 11px var(--mono);
  text-transform: uppercase;
}

.value {
  color: var(--ai-text-hi);
  font-weight: 700;
}

.status {
  color: var(--ai-live);
  font: 800 11px var(--mono);
  text-align: right;
  text-transform: uppercase;
}

.status.warn {
  color: var(--ai-redesign);
}

.status.hot {
  color: var(--ai-signature);
  text-shadow: 0 0 10px var(--ai-glow);
}

.band {
  padding: 60px 0;
  border-top: 1px solid rgba(30, 58, 95, 0.75);
  background: rgba(10, 22, 34, 0.38);
}

.band.white {
  background:
    radial-gradient(ellipse 70% 80% at 50% 0%, rgba(45, 212, 255, 0.08), transparent 60%),
    rgba(14, 34, 51, 0.58);
}

.section-head {
  max-width: 780px;
  margin-bottom: 26px;
}

.section-head p,
.card p,
.split-copy p,
.step p,
.demo-cell {
  color: var(--ai-text-md);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  position: relative;
  min-height: 222px;
  overflow: hidden;
  border: 1px solid var(--ai-line);
  border-radius: 14px;
  background: linear-gradient(160deg, var(--ai-surface-2), var(--ai-surface));
  padding: 20px;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--ai-signature);
  box-shadow: 0 0 18px var(--ai-glow);
}

.card.accent-green::before {
  background: var(--ai-live);
}

.card.accent-blue::before {
  background: var(--ai-signature);
}

.card.accent-red::before {
  background: var(--ai-redesign);
}

.card .button {
  margin-top: 8px;
}

.steps {
  display: grid;
  gap: 12px;
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  border: 1px solid var(--ai-line);
  border-radius: 13px;
  background: var(--ai-surface);
  padding: 16px;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--ai-accent), var(--ai-signature));
  color: #04121f;
  font: 800 12px var(--mono);
}

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

.demo-cell {
  min-height: 120px;
  border: 1px solid var(--ai-line);
  border-radius: 13px;
  background: rgba(15, 32, 64, 0.92);
  padding: 15px;
}

.demo-cell strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ai-signature);
  font-family: var(--mono);
}

.footer {
  border-top: 1px solid var(--ai-line);
  padding: 28px 0;
  color: var(--ai-text-lo);
  font: 500 13px var(--mono);
}

@media (prefers-reduced-motion: no-preference) {
  .brand-mark::after {
    animation: ring-pulse 3.8s ease-in-out infinite;
  }
}

@keyframes ring-pulse {
  0%,
  100% {
    opacity: 0.78;
    filter: drop-shadow(0 0 5px var(--ai-signature));
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 12px var(--ai-signature));
  }
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero-grid,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 44px;
  }

  .hero::after {
    width: 180px;
    height: 180px;
    opacity: 0.38;
  }

  .cards,
  .demo-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(100% - 22px, 1160px);
  }

  .nav-links,
  .actions {
    width: 100%;
  }

  h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 17px;
  }

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

  .status {
    text-align: left;
  }

  .button,
  .nav-links a {
    width: 100%;
  }
}