:root {
  --color-bg: #0A0A0A;
  --color-bg-elevated: #131313;
  --color-bg-surface: #1A1A1A;
  --color-text: #F4F4F0;
  --color-text-muted: #A3A39E;
  --color-text-subtle: #6B6B66;
  --color-accent: #56cc51;
  --color-accent-soft: rgba(86, 204, 81, 0.12);
  --color-accent-line: rgba(86, 204, 81, 0.28);
  --color-border: rgba(244, 244, 240, 0.08);

  --font-display: 'Codec Pro', 'CodecPro', 'Codec', 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body: 'TT Norms Pro', 'TT Norms', 'TT Norms Std', 'Red Hat Display', 'Bricolage Grotesque', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-logo-mosfet: 'Codec Pro', 'CodecPro', 'Codec', 'Bricolage Grotesque', system-ui, sans-serif;
  --font-logo-ia: 'Red Hat Display', 'Bricolage Grotesque', system-ui, sans-serif;

  --container-max: 1200px;
  --container-padding: 1.5rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding-inline: var(--container-padding); }

nav.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 10, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 220ms ease;
}
nav.site-nav.scrolled { border-bottom-color: var(--color-border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.nav-logo .logo-mosfet {
  font-family: var(--font-logo-mosfet);
  font-weight: 600;
  letter-spacing: -0.015em;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: 4px 10px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-logo .logo-ia {
  font-family: var(--font-logo-ia);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  padding-left: 4px;
}
.nav-menu { display: none; gap: 28px; list-style: none; align-items: center; }
@media (min-width: 900px) { .nav-menu { display: flex; } }
.nav-menu a,
.nav-group-btn {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--color-text-muted);
  padding: 6px 0;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-menu a[aria-current="page"], .nav-menu a:hover, .nav-group-btn:hover { color: var(--color-text); }
.nav-group { position: relative; }
.nav-group-btn::after { content: '▾'; margin-left: 6px; font-size: 10px; color: var(--color-text-subtle); }
.nav-submenu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 220px;
  list-style: none;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px;
  display: none;
  gap: 8px;
  z-index: 120;
}
.nav-submenu li { display: block; }
.nav-submenu a {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--color-text-muted);
}
.nav-submenu a:hover,
.nav-submenu a[aria-current="page"] {
  background: var(--color-accent-soft);
  color: var(--color-text);
}
.nav-group:hover .nav-submenu,
.nav-group:focus-within .nav-submenu { display: grid; }
.nav-cta {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 9px 18px;
  border-radius: 4px;
}
.nav-toggle { display: none; }
@media (max-width: 899px) {
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text);
  }
  .site-nav.open .nav-inner { height: auto; align-items: flex-start; padding-block: 12px; }
  .site-nav.open .nav-menu {
    display: grid;
    gap: 14px;
    width: 100%;
    margin-top: 54px;
    padding: 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-bg-elevated);
  }
  .site-nav.open .nav-group { display: grid; gap: 8px; }
  .site-nav.open .nav-group-btn { text-align: left; padding: 0; color: var(--color-text); }
  .site-nav.open .nav-submenu {
    position: static;
    display: grid;
    border: 0;
    padding: 0 0 0 12px;
    background: transparent;
  }
  .site-nav.open .nav-cta { display: none; }
}

.inner-main { padding-top: 120px; min-height: 60vh; }
.inner-hero { padding-block: 42px 28px; border-bottom: 1px solid var(--color-border); }
.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: 14px;
}
.kicker::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); margin-right: 8px; transform: translateY(-1px); }
.inner-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.inner-title .highlight { font-family: 'Red Hat Display', var(--font-display); color: var(--color-accent); font-weight: 600; }
.inner-lead { max-width: 780px; color: var(--color-text-muted); font-size: 19px; }

.inner-content { padding-block: 38px 80px; }
.grid-2 { display: grid; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); border-radius: 10px; overflow: hidden; }
@media (min-width: 900px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.card { background: var(--color-bg); padding: 28px; }
.card h3 { font-family: var(--font-display); font-size: 28px; margin-bottom: 10px; }
.card p { color: var(--color-text-muted); margin-bottom: 14px; }
.card a { color: var(--color-accent); font-family: var(--font-display); }
.list { list-style: none; display: grid; gap: 10px; }
.list a { color: var(--color-text); }
.list a:hover { color: var(--color-accent); }

footer {
  padding-top: 70px;
  padding-bottom: 26px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 48px; margin-bottom: 64px; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; } }
.footer-brand .footer-tagline { font-size: 15px; color: var(--color-text-muted); margin-top: 16px; max-width: 320px; }
.footer-address { margin-top: 10px; color: var(--color-text-subtle); font-size: 14px; max-width: 360px; }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  font-weight: 500;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: var(--color-text-muted); }
.footer-col a:hover { color: var(--color-accent); }
.footer-base {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--color-text-subtle);
  font-size: 13px;
}
@media (min-width: 700px) { .footer-base { flex-direction: row; justify-content: space-between; } }