:root {
  --bg: #030403;
  --bg-soft: #0a0f0a;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: #f6fff4;
  --muted: #a9b8a5;
  --green: #28ff00;
  --green-soft: rgba(40, 255, 0, 0.18);
  --line: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 28px;
}
:root[data-theme="light"] {
  --bg: #f6f8f1;
  --bg-soft: #ffffff;
  --panel: rgba(6, 18, 4, 0.06);
  --panel-strong: rgba(6, 18, 4, 0.1);
  --text: #071006;
  --muted: #4f604a;
  --green: #21e600;
  --green-soft: rgba(33, 230, 0, 0.18);
  --line: rgba(7, 16, 6, 0.14);
  --shadow: 0 24px 80px rgba(7, 16, 6, 0.12);
}


* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 10%, var(--green-soft), transparent 30rem),
    radial-gradient(circle at 10% 30%, var(--panel-strong), transparent 26rem),
    var(--bg);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, background 180ms ease;
}
.site-header.scrolled {
  border-color: var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.1rem;
}
.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.75rem;
  color: var(--text);
  background: var(--panel);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}
.theme-toggle:hover { transform: translateY(-1px); background: var(--panel-strong); }
.theme-toggle-icon {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--green-soft);
}
:root[data-theme="light"] .theme-toggle-icon {
  background: var(--text);
  box-shadow: inset -4px -4px 0 0 var(--bg-soft), 0 0 0 4px var(--green-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.site-nav a { padding: 0.55rem 0.7rem; border-radius: 999px; }
.site-nav a:hover { color: var(--text); background: var(--panel); }
.nav-cta { color: #071006 !important; background: var(--green) !important; font-weight: 800; }

.nav-toggle { display: none; background: none; border: 0; padding: 0.4rem; cursor: pointer; }
.nav-toggle span:not(.sr-only) { display: block; width: 26px; height: 2px; background: var(--text); margin: 6px 0; }

.section, .section-grid { padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 5vw, 6rem); }
.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
  min-height: calc(100vh - 72px);
}

.eyebrow, .section-kicker {
  color: var(--green);
  text-transform: uppercase;
  font-weight: 900;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  margin: 0 0 1rem;
}

h1, h2, h3 { line-height: 0.98; letter-spacing: -0.06em; margin: 0; }
h1 { font-size: clamp(4rem, 12vw, 9.5rem); max-width: 8ch; }
h2 { font-size: clamp(2.4rem, 5.4vw, 5rem); max-width: 10ch; }
h3 { font-size: clamp(1.45rem, 2.6vw, 2rem); }
p { color: var(--muted); }
.hero-text { max-width: 720px; font-size: clamp(1.05rem, 1.8vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin: 2rem 0; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.95rem 1.3rem;
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 18px 50px rgba(40, 255, 0, 0.16); }
.button.primary { color: #051004; background: var(--green); border-color: var(--green); }
.button.secondary { background: var(--panel); }

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  max-width: 760px;
}
.metrics div {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 18px;
  padding: 1rem;
}
.metrics strong { display: block; font-size: 1.4rem; color: var(--green); }
.metrics span { display: block; color: var(--muted); font-size: 0.9rem; }

.hero-visual { position: relative; }
.glow-card {
  position: relative;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, var(--panel-strong), rgba(255,255,255,0.02));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.glow-card::before {
  content: "";
  position: absolute;
  inset: 15% -20% auto 35%;
  height: 55%;
  background: var(--green);
  filter: blur(90px);
  opacity: 0.34;
  transform: rotate(-18deg);
}
.glow-card img { position: relative; filter: drop-shadow(0 20px 60px rgba(40, 255, 0, 0.2)); }

.intro { max-width: 1100px; }
.intro h2 { max-width: 12ch; }
.intro p:last-child { max-width: 860px; font-size: 1.18rem; }

.section-heading { display: flex; justify-content: space-between; gap: 2rem; align-items: end; margin-bottom: 2rem; }
.cards { display: grid; gap: 1rem; }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card, .product-panel, .forge-band, .contact {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.card { padding: 1.35rem; min-height: 250px; }
.card-number { color: var(--green); font-weight: 900; display: block; margin-bottom: 3rem; }
.dark-card { background: linear-gradient(140deg, var(--green-soft), var(--panel)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.82fr);
  gap: 2rem;
  align-items: stretch;
}
.split-copy p { max-width: 720px; }
.check-list { list-style: none; padding: 0; margin: 1.6rem 0 0; display: grid; gap: 0.8rem; }
.check-list li { color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 0.85rem 1rem; }
.check-list li::before { content: "✦"; color: var(--green); margin-right: 0.65rem; }
.product-panel {
  padding: clamp(1.4rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: end;
  background:
    linear-gradient(150deg, var(--green-soft), var(--panel-strong) 40%, rgba(255,255,255,0.02)),
    var(--bg-soft);
}
.product-chip {
  align-self: flex-start;
  margin-bottom: auto;
  color: #061204;
  background: var(--green);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-weight: 900;
  font-size: 0.8rem;
}
.product-specs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.product-specs span { border: 1px solid var(--line); border-radius: 999px; padding: 0.45rem 0.7rem; color: var(--muted); }

.forge-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 2rem;
  background: linear-gradient(120deg, var(--green-soft), var(--panel));
}
.forge-band, .contact { margin-inline: clamp(1rem, 5vw, 6rem); padding: clamp(2rem, 5vw, 4rem); }
.contact { text-align: center; background: var(--panel-strong); }
.contact h2 { margin: 0 auto; max-width: 14ch; }
.contact p { max-width: 700px; margin: 1rem auto 1.8rem; }

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 5vw, 6rem);
  border-top: 1px solid var(--line);
}
.site-footer p { margin: 0; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .section-grid, .split, .forge-band { grid-template-columns: 1fr; }
  .cards.three, .cards.two, .metrics { grid-template-columns: 1fr; }
  h1 { font-size: clamp(3.5rem, 18vw, 6rem); }
  .header-actions { gap: 0.5rem; }
  .theme-toggle span[data-theme-label] { display: none; }
  .site-nav {
    position: absolute;
    inset: 100% 1rem auto 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    border: 1px solid var(--line);
    border-radius: 22px;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .section-heading { align-items: start; flex-direction: column; }
  .site-footer { flex-direction: column; align-items: start; }
}