:root {
  --bg: #ffffff;
  --text: #171717;
  --primary: #0057FF;
  --secondary: #00D1FF;
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 87, 255, 0.15);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  --radius: 18px;
  --transition: 0.25s ease;
  --font: "Inter", "Poppins", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  scroll-behavior: smooth;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover, a:focus {
  color: var(--secondary);
  opacity: 0.9;
}

button, .btn {
  font-family: var(--font);
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 35px rgba(0, 87, 255, 0.25);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

button:hover, .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 45px rgba(0, 87, 255, 0.35);
  filter: brightness(1.05);
}

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.1rem;
  margin-top: 1rem;
  max-width: 560px;
  color: #333;
}

.hero-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.asym-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr 0.7fr;
  gap: 2rem;
}

.card {
  background: #f9f9f9;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.1);
}

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

.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: grid;
  place-items: center;
  color: #fff;
  margin-bottom: 1rem;
}

.glass-panel {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2rem;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.footer {
  padding: 3rem 0;
  border-top: 1px solid #eee;
  text-align: center;
  color: #555;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .asym-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}