:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #0f172a;
  --accent: #06b6d4;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1rem;
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  background: var(--primary);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--primary-dark); }
.menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text); }

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
  }
  .nav-links.active { display: flex; }
}

section { padding: 5rem 0; }
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: white;
  padding: 8rem 0 5rem;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero p {
  font-size: 1.125rem;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto 2rem;
}
.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, background 0.2s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-secondary {
  background: transparent;
  border: 2px solid white;
  margin-left: 1rem;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); }

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--secondary);
}
.section-subtitle {
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 1.125rem;
}

.grid { display: grid; gap: 2rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

footer {
  background: var(--secondary);
  color: #94a3b8;
  padding: 4rem 0 2rem;
}
footer .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 3rem; }
footer h3 { color: white; margin-bottom: 1rem; font-size: 1rem; }
footer a { color: #94a3b8; text-decoration: none; display: block; margin-bottom: 0.5rem; font-size: 0.9rem; }
footer a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid #334155;
  margin-top: 3rem;
  padding-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
}

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

@media (max-width: 768px) {
  .hero { padding: 6rem 0 3rem; }
  section { padding: 3rem 0; }
  .btn-secondary { margin-left: 0; margin-top: 1rem; }
}