:root {
  --bg: #050505;
  --bg-soft: #0c0c0c;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f5f5f5;
  --muted: #c1c1c1;
  --muted-2: #9b9b9b;
  --gold: #d4a63a;
  --gold-2: #f0c660;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 80% 10%, rgba(212, 166, 58, 0.12), transparent 22%),
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.03), transparent 18%),
    linear-gradient(180deg, #030303 0%, #090909 100%);
  color: var(--text);
  font-family: "Inter", sans-serif;
  line-height: 1.6;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-shell {
  min-height: 100vh;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  min-height: 86px;
}

.brand-logo {
  height: 58px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: 0.2s ease;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 48px;
  height: 48px;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: transparent;
  color: white;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: white;
  border-radius: 999px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

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

.button--gold {
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  color: #111;
  box-shadow: 0 10px 30px rgba(212, 166, 58, 0.22);
}

.button--ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.hero {
  padding: 5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gold-2);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1 {
  margin: 1rem 0 0;
  font-size: clamp(3rem, 7vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
  font-weight: 900;
}

.hero h1 span {
  display: block;
  color: var(--gold);
}

.hero-text {
  max-width: 700px;
  font-size: 1.15rem;
  color: var(--muted);
  margin: 1.5rem 0 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.2rem;
}

.metric-card {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.metric-label {
  display: block;
  color: var(--muted-2);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.5rem;
}

.metric-card strong {
  font-size: 0.96rem;
  line-height: 1.45;
}

.hero-visual {
  position: relative;
}

.hero-card {
  position: relative;
  padding: 1.2rem;
  border-radius: 32px;
  border: 1px solid rgba(212, 166, 58, 0.2);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-card__glow {
  position: absolute;
  inset: auto -10% -30% auto;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(212, 166, 58, 0.22), transparent 68%);
  pointer-events: none;
}

.hero-logo {
  width: 100%;
  display: block;
  border-radius: 24px;
  border: 1px solid rgba(212, 166, 58, 0.12);
  background: #000;
}

.hero-card__panel {
  margin-top: 1rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.info-chip {
  padding: 0.8rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: 5rem 0;
  border-top: 1px solid var(--line);
}

.section--accent {
  background:
    radial-gradient(circle at top left, rgba(212, 166, 58, 0.09), transparent 24%),
    linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.015));
}

.section--dark {
  background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0.008));
}

.section--contact {
  background:
    radial-gradient(circle at 90% 20%, rgba(212, 166, 58, 0.12), transparent 22%),
    linear-gradient(180deg, rgba(255,255,255,0.01), transparent);
}

.section-heading {
  max-width: 840px;
}

.section-heading h2 {
  margin: 0.8rem 0 0;
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  line-height: 1.03;
  letter-spacing: -0.04em;
}

.section-heading p {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.feature-grid,
.applications-grid {
  margin-top: 2.2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.feature-card,
.application-card {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: #111;
  font-weight: 800;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  margin-bottom: 1rem;
}

.feature-card h3,
.application-card h3,
.output-stage h3,
.layer-detail h3 {
  margin: 0;
  font-size: 1.25rem;
}

.feature-card p,
.application-card p,
.output-stage p {
  color: var(--muted);
  margin-top: 0.8rem;
}

.layers-grid {
  margin-top: 2.2rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.layer-card {
  text-align: left;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  cursor: pointer;
  transition: 0.2s ease;
}

.layer-card:hover,
.layer-card.is-active {
  border-color: rgba(212, 166, 58, 0.42);
  background: rgba(212, 166, 58, 0.08);
  transform: translateY(-2px);
}

.layer-index {
  display: inline-block;
  color: var(--gold-2);
  font-size: 0.85rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
  letter-spacing: 0.14em;
}

.layer-card h3 {
  margin: 0;
  font-size: 1.18rem;
}

.layer-card p {
  color: var(--muted);
  margin-top: 0.7rem;
}

.layer-detail {
  margin-top: 1rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(212, 166, 58, 0.25);
  background: linear-gradient(180deg, rgba(212,166,58,0.1), rgba(255,255,255,0.02));
}

.layer-detail__label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  color: var(--gold-2);
  margin-bottom: 0.5rem;
}

.engine-grid,
.contact-panel {
  margin-top: 2.2rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.2rem;
}

.engine-form,
.engine-output,
.contact-form,
.contact-copy {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.form-group label {
  color: var(--muted);
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: 54px;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.28);
  color: var(--text);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.engine-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.engine-output__header {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.output-pill {
  display: inline-flex;
  width: fit-content;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: rgba(212, 166, 58, 0.14);
  color: var(--gold-2);
  font-size: 0.82rem;
  font-weight: 700;
}

.output-stage + .output-stage {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.contact-copy h2 {
  margin: 0.8rem 0 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.contact-copy p {
  color: var(--muted);
  margin-top: 1rem;
}

.site-footer {
  padding: 1.8rem 0 3rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-logo {
  height: 50px;
  width: auto;
}

.footer-inner p {
  color: var(--muted-2);
  margin: 0;
  text-align: right;
}

@media (max-width: 1100px) {
  .hero-grid,
  .engine-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .layers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 860px) {
  .header-inner {
    grid-template-columns: auto auto;
  }

  .menu-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: 86px;
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-radius: 22px;
    border: 1px solid var(--line);
    background: rgba(8, 8, 8, 0.96);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.85rem 0.35rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 700px) {
  .hero {
    padding-top: 3.5rem;
  }

  .section {
    padding: 4rem 0;
  }

  .feature-grid,
  .applications-grid,
  .layers-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner p {
    text-align: left;
  }

  .brand-logo {
    height: 46px;
  }
}