:root {
  --bg: #0b1220;
  --card: #121a2b;
  --accent: #2f7cf2;
  --accent-2: #00c2ff;
  --text: #ffffff;
  --muted: #9fb3c8
}
html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text)
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.2rem
}
.site-header {
  position: sticky;
  top: 0;
  background: rgba(11, 18, 32, 0.8);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid #1f2a40;
  z-index: 20
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700
}
.logo {
  height: 36px;
  width: auto
}
.brand-text {
  font-weight: 800;
  letter-spacing: .5px
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
  padding: .5rem .4rem;
  border-radius: 8px
}
.nav a.active, .nav a:hover {
  color: var(--text);
  background: #172238
}
.hero {
  padding: 72px 0;
  background: linear-gradient(180deg, rgba(47, 124, 242, 0.12), rgba(0, 0, 0, 0));
  text-align: center
}
.hero h1 {
  font-size: 2rem;
  margin: .2rem 0 1rem
}
.hero p {
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto 1.4rem
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem auto
}
.card {
  background: var(--card);
  padding: 1.2rem;
  border: 1px solid #1f2a40;
  border-radius: 12px
}
.cta {
  padding: 2rem 0;
  text-align: center
}
.btn {
  display: inline-block;
  border: none;
  border-radius: 10px;
  padding: .75rem 1rem;
  font-weight: 700;
  text-decoration: none
}
.btn.primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff
}
.btn.secondary {
  background: #172238;
  color: #fff;
  border: 1px solid #284060
}
.site-footer {
  border-top: 1px solid #1f2a40;
  margin-top: 2rem;
  padding: 1rem 0;
  color: var(--muted)
}
.contact-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  align-items: start;
  margin: 1.4rem 0
}
.contact-form label {
  display: block;
  margin-bottom: .8rem
}
.contact-form input, .contact-form textarea {
  width: 93%;
  background: #0f1726;
  border: 1px solid #21324f;
  color: #e9eef6;
  border-radius: 10px;
  padding: .7rem
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: 2px solid var(--accent)
}
.contact-info {
  background: var(--card);
  border: 1px solid #1f2a40;
  border-radius: 12px;
  padding: 1rem
}
@media (max-width:900px) {
  .grid {
    grid-template-columns: 1fr 1fr
  }
  .contact-layout {
    grid-template-columns: 1fr
  }
}
@media (max-width:600px) {
  .grid {
    grid-template-columns: 1fr
  }
  .hero h1 {
    font-size: 1.6rem
  }
}
.theme-toggle {
  margin-left: .8rem
}