:root {
  color-scheme: dark;
  --bg: #070910;
  --panel: rgba(12, 16, 25, .82);
  --panel-strong: rgba(11, 15, 23, .95);
  --line: rgba(255, 255, 255, .18);
  --text: #f7f8fb;
  --muted: rgba(235, 239, 247, .72);
  --accent: #7cf6d4;
  --accent-strong: #f5d06f;
  --ink: #07100d;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.25));
}
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(124, 246, 212, .75);
  outline-offset: 4px;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 14px;
  left: 50%;
  width: min(1160px, calc(100% - 24px));
  min-height: 58px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 10px 14px;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 9, 16, .82);
  backdrop-filter: blur(18px);
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  font-weight: 900;
}
.brand strong { font-size: 1.55rem; }
.brand span { color: var(--accent); font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; }
nav {
  display: flex;
  justify-content: center;
  gap: 18px;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 700;
}
nav a:hover { color: var(--text); }
.header-cta,
.primary-action,
.secondary-action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 0 18px;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}
.header-cta,
.primary-action {
  color: var(--ink);
  background: var(--accent);
}
.header-cta:hover,
.primary-action:hover { background: var(--accent-strong); }
.secondary-action {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255,255,255,.06);
}
.secondary-action:hover { border-color: rgba(124,246,212,.6); }

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 500px);
  align-items: center;
  gap: 50px;
  padding: 120px max(24px, calc((100vw - 1160px) / 2)) 70px;
  overflow: hidden;
}
.hero-video,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-video {
  object-fit: cover;
  opacity: .42;
}
.hero-shade {
  background:
    radial-gradient(circle at 70% 42%, rgba(124,246,212,.16), transparent 33%),
    linear-gradient(90deg, rgba(7,9,16,.98), rgba(7,9,16,.78) 48%, rgba(7,9,16,.9));
}
.hero-copy,
.proof-panel {
  position: relative;
  z-index: 1;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(3.2rem, 8vw, 6.8rem);
  line-height: .88;
  letter-spacing: 0;
}
h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1;
}
h3 {
  margin-bottom: 10px;
  font-size: 1.12rem;
}
.lede {
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.38rem);
  line-height: 1.5;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 14px;
}
.fine-print {
  max-width: 680px;
  color: rgba(235, 239, 247, .62);
  font-size: .9rem;
}
.proof-panel {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: end;
  min-height: 560px;
}
.proof-panel img,
.proof-panel video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid rgba(124,246,212,.26);
  border-radius: 8px;
  background: #05070d;
  box-shadow: 0 28px 80px rgba(0,0,0,.52);
}
.proof-rows {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.proof-rows span {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7,9,16,.76);
  color: var(--muted);
  font-size: .92rem;
}

.response-band,
.demo-band,
.split,
.boundaries-band,
.compliance-band,
.trust-band,
.confirmation-panel,
.measurement-band,
.faq {
  padding: 86px max(24px, calc((100vw - 1160px) / 2));
}
.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}
.section-heading p {
  color: var(--muted);
  line-height: 1.62;
}
.steps,
.compliance-grid,
.limit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.limit-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.steps article,
.compliance-grid article,
.limit-grid article,
.example-card,
.purchase-box,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.steps article,
.compliance-grid article,
.limit-grid article,
.example-card {
  padding: 24px;
}
.steps span {
  display: block;
  margin-bottom: 32px;
  color: var(--accent);
  font-weight: 900;
}
.steps p,
.compliance-grid p,
.limit-grid p,
.example-card p,
.faq p,
.deliverables {
  color: var(--muted);
  line-height: 1.62;
}
.demo-band {
  background: linear-gradient(180deg, rgba(124,246,212,.06), transparent);
}
.demo-board {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: stretch;
}
.example-card span,
.trust-card span {
  display: block;
  margin-bottom: 9px;
  color: var(--accent);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.output-card {
  border-color: rgba(124,246,212,.42);
}
.demo-flow {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: demo;
}
.demo-flow li {
  min-height: 104px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255,255,255,.045);
  color: var(--muted);
  font-weight: 750;
  line-height: 1.35;
}
.demo-flow li::before {
  counter-increment: demo;
  content: "0" counter(demo);
  display: block;
  margin-bottom: 14px;
  color: var(--accent-strong);
  font-weight: 950;
}
.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 42px;
  align-items: start;
  background: linear-gradient(180deg, rgba(255,255,255,.035), transparent);
}
.deliverables {
  display: grid;
  gap: 12px;
  padding-left: 18px;
}
.purchase-box {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 13px;
  padding: 26px;
}
.purchase-box strong {
  font-size: 3.4rem;
  line-height: 1;
}
.purchase-box span {
  color: var(--muted);
  font-weight: 800;
}
#checkoutMessage {
  min-height: 44px;
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
}
.compliance-band h2,
.faq h2 { max-width: 760px; }
.trust-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.028);
}
.trust-band p,
.confirmation-panel li,
.measurement-band p {
  color: var(--muted);
  line-height: 1.62;
}
.trust-card {
  display: grid;
  gap: 8px;
  padding: 24px;
  border: 1px solid rgba(124,246,212,.32);
  border-radius: 8px;
  background: var(--panel-strong);
}
.trust-card strong {
  margin-bottom: 8px;
}
.confirmation-panel {
  background: linear-gradient(180deg, rgba(245,208,111,.06), transparent);
}
.confirmation-panel ol {
  display: grid;
  gap: 10px;
  max-width: 820px;
  padding-left: 22px;
}
.confirmation-panel [data-checkout-message] {
  max-width: 760px;
  min-height: 28px;
  color: var(--accent);
  font-weight: 850;
}
.faq {
  display: grid;
  gap: 14px;
}
.faq details {
  padding: 18px 20px;
}
.faq summary {
  cursor: pointer;
  font-weight: 900;
}
.faq p {
  margin: 14px 0 0;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding: 34px max(24px, calc((100vw - 1160px) / 2));
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.site-footer span {
  color: var(--text);
  font-weight: 900;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }
  .site-header nav {
    display: none;
  }
  .hero,
  .split,
  .trust-band {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: auto;
    padding-top: 104px;
  }
  .proof-panel {
    min-height: 0;
  }
  .steps,
  .compliance-grid,
  .limit-grid {
    grid-template-columns: 1fr;
  }
  .demo-board {
    grid-template-columns: 1fr;
  }
  .demo-flow {
    grid-template-columns: 1fr 1fr;
  }
  .purchase-box {
    position: static;
  }
}

@media (max-width: 560px) {
  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: .84rem;
  }
  h1 {
    font-size: 3rem;
  }
  .hero-actions {
    display: grid;
  }
  .demo-flow {
    grid-template-columns: 1fr;
  }
  .demo-actions {
    display: grid;
  }
  .primary-action,
  .secondary-action {
    width: 100%;
  }
}