:root {
  --bg: #0a0c10;
  --bg-lift: #12161e;
  --ink: #e6ebf2;
  --muted: #8b95a5;
  --line: rgba(230, 235, 242, 0.10);
  --teal: #5eead4;
  --teal-deep: #0d9488;
  --amber: #e8a054;
  --panel: rgba(18, 22, 30, 0.82);
  --font-display: "Outfit", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Helvetica Neue", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 68rem;
  /* Hero only — wider so copy + product shot fit as one band */
  --hero-max: 88rem;
  --hero-pad: clamp(1.25rem, 4vw, 3rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* Offset anchor targets so headings clear the fixed topbar */
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--teal);
  text-decoration: none;
}

a:hover {
  color: #a5f3e8;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 50;
  background: var(--bg-lift);
  color: var(--ink);
  padding: 0.5rem 0.75rem;
}

/* Atmosphere */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(13, 148, 136, 0.28), transparent 55%),
    radial-gradient(900px 600px at 92% 8%, rgba(232, 160, 84, 0.12), transparent 50%),
    radial-gradient(800px 500px at 70% 90%, rgba(94, 234, 212, 0.08), transparent 55%),
    linear-gradient(180deg, #0a0c10 0%, #0d1118 45%, #0a0c10 100%);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Top bar — fixed while scrolling; hero owns the large brand */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--hero-pad);
  background: rgba(10, 12, 16, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}

.topbar-brand img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.topbar-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  font-size: 0.92rem;
}

.topbar-nav a {
  color: var(--muted);
  text-decoration: none;
}

.topbar-nav a:hover {
  color: var(--ink);
}

/* Hero — brand + copy + product shot as one first-viewport composition */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  /* Clear fixed topbar */
  padding-top: 3.5rem;
  overflow-x: clip;
  overflow-y: visible;
}

.hero-stage {
  /* Center the whole band first, then split into copy | shot */
  display: grid;
  align-items: center;
  gap: clamp(1.75rem, 4vw, 2.75rem);
  width: 100%;
  max-width: var(--hero-max);
  margin: 0 auto;
  padding:
    clamp(1.5rem, 5vh, 3rem)
    var(--hero-pad)
    clamp(2rem, 6vh, 3.5rem);
  box-sizing: border-box;
}

@media (min-width: 960px) {
  .hero-stage {
    grid-template-columns: minmax(16rem, 32rem) minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 40rem;
  min-width: 0;
}

@media (min-width: 960px) {
  .hero-copy {
    max-width: none;
  }
}

.hero-visual {
  position: relative;
  min-width: 0;
  animation: rise 1s ease-out 0.28s both;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-visual {
    overflow: visible;
  }
}

/* Fixed 16:10 bounds — scales with column width or viewport height, never crops */
.hero-shot-frame {
  width: min(100%, calc(min(58dvh, 31.25rem) * 1.6));
  max-width: 100%;
  flex-shrink: 1;
  min-width: 0;
  margin-inline: auto;
}

@media (min-width: 960px) {
  .hero-shot-frame {
    width: min(100%, calc(min(62dvh, 33.75rem) * 1.6));
  }
}

@media (min-width: 960px) and (max-height: 700px) {
  .hero-shot-frame {
    width: min(100%, calc(min(48dvh, 26rem) * 1.6));
  }
}

.hero-shot {
  width: 100%;
  height: auto;
  display: block;
  border: none;
  border-radius: 10px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.hero-mark {
  width: clamp(72px, 12vw, 112px);
  height: auto;
  margin: 0 0 1.25rem;
  object-fit: contain;
  animation: rise 0.9s ease-out both;
}

.hero-wordmark {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  /* Outfit is narrower than Syne; clamp + nowrap keeps N3UR0N on one line. */
  font-size: clamp(2.4rem, 7.2vw, 4.25rem);
  letter-spacing: 0.04em;
  line-height: 1;
  white-space: nowrap;
  color: var(--teal);
  animation: rise 0.9s ease-out 0.08s both;
}

.hero-line {
  margin: 0 0 0.75rem;
  max-width: 28ch;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  animation: rise 0.9s ease-out 0.16s both;
}

.hero-support {
  margin: 0 0 2rem;
  max-width: 42ch;
  color: var(--muted);
  font-size: 1.08rem;
  animation: rise 0.9s ease-out 0.24s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  animation: rise 0.9s ease-out 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.25rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--teal-deep);
  color: #041414;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: var(--teal);
  color: #041414;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-mark,
  .hero-wordmark,
  .hero-line,
  .hero-support,
  .cta-row,
  .hero-visual {
    animation: none;
  }
  .btn:hover {
    transform: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* Sections */
main {
  padding: 0 var(--hero-pad) 4rem;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
  border-top: 1px solid var(--line);
}

.section-label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}

.section h2 {
  margin: 0 0 1.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: none;
}

.section > .lede {
  margin: 0 0 2rem;
  max-width: 62ch;
  color: var(--muted);
}

.split {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 720px) {
  .split-2 {
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 4vw, 3rem);
  }
}

.prose p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose .lede,
.prose > p.lede {
  margin: 0 0 1rem;
  color: var(--muted);
}

.prose strong {
  color: var(--ink);
  font-weight: 600;
}

.not-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.not-list li {
  padding: 0.85rem 0 0.85rem 1rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
}

.not-list li span {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 0.15rem;
}

/* Why — benefit list + live demo */
.why-list {
  align-content: start;
}

.why-list em {
  font-style: normal;
  color: var(--ink);
}

.why-demo {
  min-width: 0;
}

.why-demo-cap {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
}

/* Steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  counter-reset: step;
}

@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.steps li {
  position: relative;
  padding: 1.35rem 0 0;
  border-top: 1px solid var(--line);
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.steps h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
}

.steps p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Profiles */
.profiles {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

@media (min-width: 720px) {
  .profiles {
    grid-template-columns: 1fr 1fr;
  }
}

.profile {
  background: var(--panel);
  padding: 1.5rem 1.35rem;
}

.profile h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.profile p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.profile .tag {
  display: inline-block;
  margin-bottom: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

/* Get started */
.start-note {
  margin: 0 0 1.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(232, 160, 84, 0.35);
  border-radius: 4px;
  background: rgba(232, 160, 84, 0.06);
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 58ch;
}

.start-note strong {
  color: var(--amber);
}

.start-block {
  margin: 0 0 2rem;
}

.start-block h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.start-block > p {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.95rem;
}

pre {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  background: #06080c;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: #c9d2de;
}

pre code {
  font-family: inherit;
}

/* Network */
.network-box {
  padding: 1.5rem 0 0;
  max-width: 48ch;
}

.network-box p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.seed-live {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.55rem 0.8rem;
  border-radius: 4px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.seed-live .dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}

/* Checking — amber, no claim yet */
.seed-live.is-checking {
  border-color: rgba(232, 160, 84, 0.35);
  background: rgba(232, 160, 84, 0.06);
}
.seed-live.is-checking .dot {
  background: var(--amber);
}

/* Live — teal, pulsing */
.seed-live.is-live {
  border-color: rgba(94, 234, 212, 0.35);
  background: rgba(94, 234, 212, 0.06);
}
.seed-live.is-live .dot {
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.5);
  animation: pulse 2s ease-out infinite;
}

/* Down — muted red */
.seed-live.is-down {
  border-color: rgba(239, 120, 120, 0.35);
  background: rgba(239, 120, 120, 0.06);
  color: var(--muted);
}
.seed-live.is-down .dot {
  background: #ef7878;
}

.seed-live:hover {
  border-color: var(--teal);
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.5); }
  70% { box-shadow: 0 0 0 0.5rem rgba(94, 234, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .seed-live .dot { animation: none; }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem var(--hero-pad) 2.5rem;
}

.site-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: baseline;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--teal);
}