*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #070b10;
  --bg-elevated: #0d1319;
  --surface: #121a22;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf2;
  --text-muted: #8b9aab;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.35);
  --gradient-start: #00d4aa;
  --gradient-end: #4f8cff;
  --font: "Instrument Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", monospace;
  --max-width: 1120px;
  --radius: 12px;
  --radius-lg: 20px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.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;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
}

.skip-link:focus {
  top: 0;
}

#grid-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-glow);
  top: -200px;
  right: -100px;
  opacity: 0.25;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: rgba(79, 140, 255, 0.2);
  bottom: -150px;
  left: -100px;
  opacity: 0.2;
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  display: block;
  height: auto;
  width: auto;
  max-height: 48px;
}

.site-header .logo-img {
  max-height: 52px;
  background: #fff;
  border-radius: 10px;
  padding: 0.4rem 0.65rem;
}

.footer-logo {
  max-height: 44px;
  background: #fff;
  border-radius: 10px;
  padding: 0.35rem 0.55rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.25);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-lead a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.hero-lead a:hover {
  text-decoration: underline;
}

.philosophy {
  max-width: var(--max-width);
  margin: 0 auto 5rem;
  padding: 0 1.5rem;
}

.philosophy-inner {
  text-align: center;
  padding: 3rem 2rem;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.08), rgba(79, 140, 255, 0.08));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.philosophy-headline {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.philosophy-headline strong {
  font-weight: 800;
  -webkit-text-fill-color: var(--text);
  color: var(--text);
}

.philosophy-detail {
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.about,
.capabilities {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}

.about h2,
.capabilities h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.about p {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.card {
  padding: 2rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s, transform 0.25s;
}

.card:hover {
  border-color: rgba(0, 212, 170, 0.3);
  transform: translateY(-2px);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.25rem;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
}

.card-icon svg {
  display: block;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.card p {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  align-items: center;
}

.copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .pulse-dot {
    animation: none;
  }

  .card:hover {
    transform: none;
  }
}