:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --card: #0b1221;
  --border: #1f2937;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.08), transparent 25%),
              radial-gradient(circle at 80% 0%, rgba(16, 185, 129, 0.07), transparent 22%),
              var(--bg);
  line-height: 1.6;
  min-height: 100vh;
}

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

.hero {
  position: relative;
  padding: 32px clamp(20px, 6vw, 80px) 120px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  padding: 14px 0;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 10px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

.hero-content {
  margin: 90px auto 0;
  max-width: 640px;
  text-align: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2.4rem, 4vw, 3.6rem);
}

.subtitle {
  color: var(--muted);
  margin: 0 0 28px;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.button.primary {
  background: linear-gradient(135deg, #38bdf8, #22c55e);
  color: #0b1221;
  box-shadow: var(--shadow);
}

.button.ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.button:hover {
  transform: translateY(-2px);
}

.section {
  padding: 90px clamp(20px, 6vw, 80px);
}

.section-header h2 {
  margin: 6px 0 18px;
  font-size: 2rem;
}

.section-header p {
  margin: 0;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  color: var(--muted);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.chip {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-weight: 600;
  color: var(--text);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-top: 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 6px;
}

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

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.tag {
  background: rgba(56, 189, 248, 0.15);
  color: #7dd3fc;
  padding: 8px 12px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
}

.text-link {
  color: var(--accent);
  font-weight: 600;
}

.footer {
  text-align: center;
  padding: 40px 20px 50px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .nav {
    position: static;
    flex-wrap: wrap;
    gap: 12px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-links {
    width: 100%;
    flex-direction: column;
    display: none;
    border: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.9);
    border-radius: 12px;
    padding: 12px;
  }

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

  .nav-links li {
    width: 100%;
  }

  .nav-link {
    display: block;
    width: 100%;
  }

  .hero-content {
    margin-top: 50px;
  }
}