:root {
  --bg: #0b1220;
  --bg-alt: #121b2e;
  --accent: #4f8cff;
  --text: #e6edf7;
  --text-dim: #9fb0c9;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 5%;
  background: var(--bg-alt);
  border-bottom: 1px solid #1f2c45;
  position: sticky;
  top: 0;
  z-index: 10;
}
header .logo { font-size: 1.4rem; font-weight: 700; color: #fff; }
header .logo span { color: var(--accent); }
nav a {
  color: var(--text-dim);
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 500;
  transition: color .15s;
}
nav a:hover, nav a.active { color: var(--text); }
.hero {
  text-align: center;
  padding: 6rem 5% 4rem;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
}
.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; color: #fff; }
.hero p { font-size: 1.2rem; color: var(--text-dim); max-width: 640px; margin: 0 auto 2rem; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: background .15s;
}
.btn:hover { background: #3a73e0; }
main { max-width: 1100px; margin: 0 auto; padding: 4rem 5%; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.card {
  background: var(--bg-alt);
  border: 1px solid #1f2c45;
  border-radius: 10px;
  padding: 1.75rem;
}
.card h3 { color: #fff; margin-bottom: 0.5rem; }
.card p { color: var(--text-dim); }
section h2 { font-size: 2rem; color: #fff; margin-bottom: 0.5rem; }
section .lede { color: var(--text-dim); max-width: 700px; }
footer {
  text-align: center;
  padding: 2.5rem 5%;
  color: var(--text-dim);
  border-top: 1px solid #1f2c45;
  margin-top: 3rem;
}
form { display: flex; flex-direction: column; gap: 1rem; max-width: 480px; margin-top: 2rem; }
input, textarea {
  background: var(--bg-alt);
  border: 1px solid #1f2c45;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}
textarea { min-height: 140px; resize: vertical; }
.contact-info { margin-top: 2.5rem; color: var(--text-dim); }
.contact-info a { color: var(--accent); text-decoration: none; }