:root {
  color-scheme: dark;
  --ink: #f4f0e8;
  --muted: #b8b2a7;
  --soft: #8f887a;
  --line: rgba(244, 240, 232, 0.16);
  --panel: rgba(24, 25, 22, 0.78);
  --panel-solid: #171915;
  --ground: #10110f;
  --ground-2: #1b1b16;
  --accent: #73ee5f;
  --accent-strong: #a4ff72;
  --brass: #c9a45a;
  --shadow: rgba(0, 0, 0, 0.46);
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

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

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.15rem clamp(1rem, 4vw, 3rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 720;
}

.brand-mark {
  width: 0.78rem;
  height: 0.78rem;
  border: 1px solid rgba(164, 255, 114, 0.78);
  background:
    linear-gradient(90deg, transparent 45%, rgba(164, 255, 114, 0.7) 45% 55%, transparent 55%),
    linear-gradient(0deg, transparent 45%, rgba(164, 255, 114, 0.7) 45% 55%, transparent 55%);
  box-shadow: 0 0 18px rgba(115, 238, 95, 0.52);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2.6vw, 2rem);
  color: rgba(244, 240, 232, 0.72);
  font-size: 0.82rem;
  font-weight: 650;
}

.nav-links a {
  transition:
    color 180ms ease,
    opacity 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent-strong);
}

.hero {
  position: relative;
  display: grid;
  min-height: 86svh;
  align-items: center;
  overflow: hidden;
  background-image:
    linear-gradient(90deg, rgba(16, 17, 15, 0.98) 0%, rgba(16, 17, 15, 0.88) 30%, rgba(16, 17, 15, 0.5) 60%, rgba(16, 17, 15, 0.2) 100%),
    linear-gradient(0deg, rgba(16, 17, 15, 0.96) 0%, rgba(16, 17, 15, 0.08) 38%),
    url("openlayout-hero.png");
  background-position: center;
  background-size: cover;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 32%;
  content: "";
  pointer-events: none;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(115, 238, 95, 0.09) 0,
      rgba(115, 238, 95, 0.09) 1px,
      transparent 1px,
      transparent 90px
    );
  mask-image: linear-gradient(0deg, rgba(0, 0, 0, 0.6), transparent);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - clamp(2rem, 7vw, 7rem)));
  margin: 0 auto;
  padding-top: clamp(5rem, 10vh, 7rem);
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.95rem;
  color: var(--accent-strong);
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 11ch;
  margin-bottom: 1rem;
  font-size: clamp(4.4rem, 12vw, 9.5rem);
  font-weight: 760;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  max-width: 13ch;
  margin-bottom: 0;
  font-size: clamp(2.1rem, 5vw, 4.8rem);
  font-weight: 720;
  line-height: 0.96;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.8rem;
  color: #fffaf1;
  font-size: 1.1rem;
  line-height: 1.2;
}

.hero-copy {
  max-width: 42rem;
  margin-bottom: 1.75rem;
  color: rgba(244, 240, 232, 0.86);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
}

.hero-actions,
.closing-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 2.85rem;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.78rem 1.08rem;
  font-size: 0.92rem;
  font-weight: 760;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  border-color: rgba(164, 255, 114, 0.7);
  background: #cbff8a;
  color: #11150f;
  box-shadow: 0 0 26px rgba(115, 238, 95, 0.28);
}

.button-quiet {
  border-color: rgba(244, 240, 232, 0.2);
  background: rgba(12, 12, 10, 0.48);
  color: var(--ink);
  backdrop-filter: blur(10px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 47rem;
  margin: clamp(2rem, 5vh, 3.5rem) 0 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: rgba(14, 15, 12, 0.5);
  backdrop-filter: blur(14px);
}

.hero-metrics div {
  min-width: 0;
  padding: 1rem;
  border-right: 1px solid var(--line);
}

.hero-metrics dt {
  margin-bottom: 0.35rem;
  color: var(--soft);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hero-metrics dd {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1rem, 2vw, 1.45rem);
  font-weight: 760;
}

.section {
  padding: clamp(4rem, 9vw, 7rem) clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: var(--ground);
}

.section-inner {
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.section-intro {
  padding-top: clamp(1.75rem, 4vw, 3rem);
  background:
    linear-gradient(90deg, rgba(115, 238, 95, 0.08), transparent 36%),
    #12130f;
}

.intro-grid,
.safety-layout,
.usecase-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(18rem, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.intro-grid p:not(.section-kicker),
.safety-copy p {
  max-width: 42rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.22rem);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

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

.feature-card {
  min-height: 18rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  background:
    linear-gradient(180deg, rgba(244, 240, 232, 0.045), rgba(244, 240, 232, 0.015)),
    var(--panel-solid);
}

.feature-number {
  display: block;
  margin-bottom: 4rem;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 800;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.section-band {
  background:
    linear-gradient(90deg, rgba(201, 164, 90, 0.12), transparent 42%),
    var(--ground-2);
}

.usecase-grid h2 {
  max-width: 15ch;
}

.usecase-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.usecase-list span {
  display: flex;
  min-height: 3rem;
  align-items: center;
  border-bottom: 1px solid rgba(244, 240, 232, 0.18);
  color: rgba(244, 240, 232, 0.88);
  font-weight: 700;
}

.safety-copy {
  display: grid;
  gap: 1.3rem;
}

.text-link {
  width: fit-content;
  color: var(--accent-strong);
  font-weight: 760;
  border-bottom: 1px solid rgba(164, 255, 114, 0.55);
}

.closing {
  padding: clamp(4rem, 9vw, 7rem) clamp(1rem, 4vw, 3rem);
  background:
    linear-gradient(180deg, rgba(16, 17, 15, 0.1), rgba(16, 17, 15, 0.96)),
    linear-gradient(90deg, rgba(115, 238, 95, 0.12), rgba(201, 164, 90, 0.12));
}

.closing-inner {
  width: min(var(--max), 100%);
  margin: 0 auto;
  justify-content: space-between;
}

.closing h2 {
  max-width: 17ch;
  margin-right: auto;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  background: #0c0d0b;
  color: var(--soft);
  font-size: 0.82rem;
  font-weight: 650;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent-strong);
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 84svh;
    background-position: 61% center;
  }

  .hero-inner {
    width: min(100% - 2rem, var(--max));
    padding-top: 5.4rem;
  }

  h1 {
    font-size: clamp(3.25rem, 15.5vw, 4.85rem);
  }

  .hero-copy {
    max-width: 30rem;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    max-width: 24rem;
  }

  .hero-metrics div {
    padding: 0.82rem 0.9rem;
    border-bottom: 1px solid var(--line);
  }

  .intro-grid,
  .safety-layout,
  .usecase-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }

  .feature-card {
    min-height: 13rem;
  }

  .feature-number {
    margin-bottom: 2.3rem;
  }

  .usecase-list {
    grid-template-columns: 1fr;
  }

  .closing-inner {
    display: grid;
    justify-items: start;
  }
}

@media (max-width: 430px) {
  .hero-actions {
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-block: 3.5rem;
  }
}