:root {
  color-scheme: dark;
  --bg: #0b1220;
  --surface: #111b32;
  --surface-soft: #17243f;
  --text: #f6f8ff;
  --muted: #a2b2ce;
  --accent: #5bb8ff;
  --accent-strong: #2fa1ff;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 24px;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(91, 184, 255, 0.2), transparent 35%),
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08), transparent 18%),
    linear-gradient(180deg, #09101d 0%, #08121e 100%);
  color: var(--text);
  line-height: 1.75;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 12, 24, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner,
.footer-inner,
.about-grid,
.contact-grid {
  display: grid;
  align-items: center;
  gap: 1rem;
}

.header-inner,
.footer-inner {
  grid-template-columns: auto 1fr auto;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.brand-text {
  display: inline-block;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

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

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

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  padding: 0.5rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 999px;
}

.hero-section {
  padding: 6rem 0 4rem;
}

.hero-content {
  max-width: 720px;
  display: grid;
  gap: 1.5rem;
}

.eyebrow {
  display: inline-block;
  margin: 0;
  color: var(--accent);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero-content h1,
.section-header h2,
.about-card h3,
.cta-card h2,
.contact-card h3 {
  margin: 0;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.02;
}

.hero-content p {
  color: var(--muted);
  font-size: 1.05rem;
}

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

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #071523;
}

.btn-secondary {
  border: 1px solid rgba(255,255,255,0.16);
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}

.section {
  padding: 5rem 0;
}

.section-header {
  max-width: 720px;
  display: grid;
  gap: 1rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.75rem);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 2rem;
  min-height: 220px;
}

.card h3 {
  margin-bottom: 1rem;
}

.about-grid {
  grid-template-columns: 1.4fr 0.9fr;
  gap: 2rem;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.6rem;
}

.feature-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.about-card,
.contact-card,
.cta-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 2rem;
}

.cta-section {
  padding: 3rem 0;
}

.cta-card {
  text-align: center;
}

.cta-card p {
  max-width: 620px;
  margin: 1rem auto 0;
  color: var(--muted);
}

.contact-grid {
  grid-template-columns: 1.3fr 0.9fr;
  gap: 2rem;
}

.contact-info {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.contact-info strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.contact-info p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  padding: 1.5rem 0;
  grid-template-columns: 1fr auto;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .cards-grid,
  .about-grid,
  .contact-grid,
  .header-inner,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .hero-section {
    padding-top: 4rem;
  }

  .hero-content h1 {
    font-size: 2.4rem;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
    padding-bottom: 1rem;
  }

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

  .header-inner {
    grid-template-columns: auto auto;
  }

  .footer-inner {
    gap: 0.5rem;
  }
}