:root {
  --bg: #07140f;
  --surface: #0f221b;
  --surface-alt: #163127;
  --text: #f6f2dc;
  --muted: #c7c19f;
  --accent: #d89a3d;
  --accent-2: #8ec2ff;
  --line: #2b4e41;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at 20% 20%, #113326 0%, transparent 35%),
    radial-gradient(circle at 80% 10%, #2d3e17 0%, transparent 25%),
    linear-gradient(180deg, #050f0b 0%, #07140f 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.45;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  z-index: -1;
  filter: blur(70px);
  opacity: 0.35;
}

.bg-glow-1 {
  width: 340px;
  height: 340px;
  background: #2f8f6d;
  top: -100px;
  left: -90px;
}

.bg-glow-2 {
  width: 420px;
  height: 420px;
  background: #7f6726;
  right: -140px;
  bottom: -180px;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(5, 15, 11, 0.82);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1rem;
  z-index: 20;
}

.brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.brand img {
  display: block;
  width: auto;
}

.brand img {
  height: clamp(30px, 4.4vw, 42px);
  max-width: min(50vw, 260px);
}

.site-nav {
  display: flex;
  gap: 1rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

main {
  width: min(1080px, calc(100vw - 2rem));
  margin: 0 auto;
}

.hero {
  padding: 4.8rem 0 3rem;
}

.eyebrow {
  color: var(--accent);
  letter-spacing: 0.17em;
  font-size: 0.78rem;
  margin: 0 0 0.8rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.05;
}

h1 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2.8rem, 7vw, 6rem);
  letter-spacing: 0.025em;
  max-width: 15ch;
}

.hero-copy {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.08rem;
  margin-top: 1rem;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.free-notice {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.free-notice a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn {
  display: inline-block;
  border-radius: 999px;
  padding: 0.72rem 1.15rem;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #111;
  background: linear-gradient(145deg, #ffd58f, #d89a3d);
  box-shadow: 0 10px 28px rgba(216, 154, 61, 0.35);
}

.btn-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.grid-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0 4rem;
}

.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), #0c1a15);
  border-radius: 14px;
  padding: 1rem;
}

.card h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 2rem;
  color: var(--accent-2);
}

.card p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.demo {
  border: 1px solid var(--line);
  background: linear-gradient(130deg, var(--surface), var(--surface-alt));
  border-radius: 16px;
  padding: 1.4rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}

.demo h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
}

.demo p,
.demo li {
  color: var(--muted);
}

.videos {
  margin: 4rem 0;
}

.videos-head h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.videos-head p {
  color: var(--muted);
  max-width: 70ch;
}

.video-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.video-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.9rem;
  background: rgba(11, 24, 19, 0.82);
}

.video-card h3 {
  margin-top: 0.75rem;
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.9rem;
  color: var(--accent-2);
}

.video-card p {
  margin-top: 0.3rem;
  color: var(--muted);
}

.demo-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid #335748;
  border-radius: 12px;
  background: #020805;
  overflow: hidden;
  display: block;
}

.channel-cta {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  background: linear-gradient(140deg, #10261e, #1c2b15);
}

.channel-cta h3 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 2rem;
  color: #ffe8bd;
}

.channel-cta p {
  color: var(--muted);
}

.use-cases {
  margin: 4rem 0;
}

.use-cases h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.use-case-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.use-case {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: rgba(22, 49, 39, 0.75);
}

.use-case h3 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.8rem;
  color: var(--accent);
}

.use-case p {
  color: var(--muted);
  margin-top: 0.45rem;
}

.waitlist {
  margin: 4rem 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, #0f221b, #0b1813);
  padding: 1.4rem;
}

.waitlist h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.1rem);
}

.waitlist p {
  color: var(--muted);
}

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

.roadmap-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: rgba(11, 24, 19, 0.82);
}

.roadmap-item h3 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.9rem;
  color: var(--accent-2);
}

.roadmap-item p {
  margin-top: 0.4rem;
  color: var(--muted);
}

.hardware-req {
  margin: 4rem 0;
}

.hardware-head h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.hardware-head p {
  color: var(--muted);
  max-width: 70ch;
}

.hw-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.hw-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: linear-gradient(180deg, var(--surface), #0c1a15);
}

.hw-item h3 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.6rem;
  color: var(--accent);
}

.hw-item p {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem;
  text-align: center;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 550ms ease, transform 550ms ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .grid-section,
  .use-case-grid,
  .demo,
  .video-grid,
  .roadmap-list,
  .hw-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
  }

  .hero {
    padding-top: 3.5rem;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding: 0.6rem 0.9rem;
  }

  .brand img {
    height: 28px;
  }
}