:root {
  --bg: #ffffff;
  --bg-secondary: #f8f9fb;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-teal: #0d9488;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-full: 9999px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition);
  letter-spacing: normal;
}

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

.btn-primary:hover {
  background: #5a4bd1;
}

.btn-secondary {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--bg-secondary);
}

.btn-success {
  background: #059669;
  color: white;
}

.btn-success:hover {
  background: #047857;
}

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover {
  background: #5a4bd1;
}

.btn-ghost {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  background: var(--border-light);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.text-gradient {
  color: var(--accent);
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.65rem;
  }
}