:root {
  --bg: #0b1120;
  --bg-alt: #0e1626;
  --surface: #121c30;
  --surface-border: #1f2c45;
  --text: #e7ecf7;
  --text-dim: #9aa7c2;
  --accent: #4fd1c5;
  --accent-2: #7c9eff;
  --radius: 14px;
  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 17, 32, 0.75);
  border-bottom: 1px solid var(--surface-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  color: var(--accent);
  background: rgba(79, 209, 197, 0.1);
  border: 1px solid rgba(79, 209, 197, 0.3);
  border-radius: 8px;
  padding: 3px 7px;
  font-size: 0.85rem;
}
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav a {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}
.nav a:hover { color: var(--text); }
.nav-cta {
  color: var(--bg) !important;
  background: var(--accent);
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600 !important;
}
.nav-cta:hover { background: #6adfd4; color: var(--bg) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 90px;
}
.hero-glow {
  position: absolute;
  top: -200px;
  right: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79,209,197,0.18), transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 760px; }
.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}
.eyebrow.center { text-align: center; }
h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  font-weight: 800;
}
.hero-lead {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 0 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06111f;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -8px rgba(79,209,197,0.5); }
.btn-ghost {
  border: 1px solid var(--surface-border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; }

/* Stats strip */
.strip {
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
  background: var(--surface);
}
.strip-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 36px 24px;
}
.strip-item { text-align: center; }
.strip-item strong {
  display: block;
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 4px;
}
.strip-item span { color: var(--text-dim); font-size: 0.92rem; }

/* Sections */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.section-title.center { text-align: center; }
.section-lead {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 640px;
}
.section-lead.center { margin-left: auto; margin-right: auto; text-align: center; }

/* Grid / Cards */
.grid { display: grid; gap: 24px; margin-top: 56px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(79,209,197,0.4); }
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: rgba(79,209,197,0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 10px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

/* Tech badges */
.tech-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.tech-group h4 {
  color: var(--text-dim);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 14px;
  font-weight: 600;
}
.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-family: 'JetBrains Mono', monospace;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}
.checklist {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.checklist li {
  position: relative;
  padding-left: 32px;
  color: var(--text-dim);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(79,209,197,0.12);
  border: 1px solid rgba(79,209,197,0.4);
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

/* CTA */
.section-cta { text-align: center; }
.cta-inner { display: flex; flex-direction: column; align-items: center; }
.cta-inner .section-lead { margin-top: 4px; margin-bottom: 40px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* Responsive */
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .tech-groups { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .strip-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--surface-border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav.open { max-height: 300px; }
  .nav a { width: 100%; padding: 16px 24px; border-bottom: 1px solid var(--surface-border); }
  .nav-cta { border-radius: 0; text-align: center; }
  .nav-toggle { display: flex; }
  .grid-3 { grid-template-columns: 1fr; }
  .tech-groups { grid-template-columns: 1fr 1fr; }
  .hero { padding: 90px 0 60px; }
  .section { padding: 70px 0; }
}