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

 :root {
   --primary: #6366f1;
   --primary-dark: #4f46e5;
   --secondary: #ec4899;
   --bg: #0f0f23;
   --bg-light: #1a1a2e;
   --text: #e2e8f0;
   --text-muted: #cbd5e1;
   --border: #334155;
   --success: #10b981;
 }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo svg {
  width: 40px;
  height: 40px;
  fill: var(--primary);
}

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:hover {
  color: var(--primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn svg {
  width: 28px;
  height: 28px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg) 100%);
  padding: 6rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

 .hero h1 {
   font-size: 2.5rem;
   font-weight: 800;
   margin-bottom: 1.5rem;
   background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
   -webkit-background-clip: text;
   -webkit-text-fill-color: transparent;
   background-clip: text;
 }

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 2.5rem;
}

/* Sections */
section {
  padding: 5rem 0;
}

 .section-title {
   font-size: 2rem;
   font-weight: 700;
   text-align: center;
   margin-bottom: 3rem;
   color: var(--text);
 }

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

.feature-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.feature-card p {
  color: var(--text-muted);
}

/* CTA Button */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.cta-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.cta-floating {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99;
  padding: 1rem 2rem;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin: 3rem 0;
}

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

 .stat-number {
   font-size: 2.5rem;
   font-weight: 800;
   color: var(--primary);
   display: block;
 }

.stat-label {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s;
}

.blog-card:hover {
  transform: translateY(-4px);
}

.blog-card-content {
  padding: 1.5rem;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.blog-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.blog-card-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.blog-card-link:hover {
  color: var(--primary-dark);
}

/* FAQ */
.faq-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}

.faq-question:hover {
  background: rgba(99, 102, 241, 0.1);
}

.faq-question svg {
  width: 24px;
  height: 24px;
  fill: var(--primary);
  transition: transform 0.3s;
}

.faq-question.active svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  padding: 0 1.5rem 1.25rem;
  max-height: 1000px;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

/* Footer */
footer {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.footer-section a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Article page */
.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 2rem;
  margin: 2rem 0 1rem;
  color: var(--text);
}

.article-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: var(--text);
}

.article-content p {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

.article-content ul,
.article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-muted);
}

.article-content li {
  margin-bottom: 0.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 2rem;
}

.back-link:hover {
  color: var(--primary-dark);
}

 /* Utility classes */
 .text-center { text-align: center; }
 .mt-1 { margin-top: 1rem; }
 .mt-2 { margin-top: 2rem; }
 .mt-3 { margin-top: 3rem; }
 .mb-1 { margin-bottom: 1rem; }
 .mb-2 { margin-bottom: 2rem; }
 .mb-3 { margin-bottom: 3rem; }
  .max-width-600 { max-width: 600px; margin: 0 auto; }
  .max-width-800 { max-width: 800px; margin: 0 auto; }
  .bg-light-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
  }
  .bg-light-section { background: var(--bg-light); }
  .link-primary { color: var(--primary); text-decoration: none; }
  .link-primary:hover { color: var(--primary-dark); text-decoration: underline; }
  .text-primary { color: var(--primary); }
  .text-muted { color: var(--text-muted); }
  .fs-09 { font-size: 0.9rem; }
  .fs-1-125 { font-size: 1.125rem; }
  .mt-05 { margin-top: 0.5rem; }
  .mb-05 { margin-bottom: 0.5rem; }
  .mt-1-5 { margin-top: 1.5rem; }
  .mb-1-5 { margin-bottom: 1.5rem; }
  .border-left-primary { border-left: 4px solid var(--primary); }

  /* Mobile menu section */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-light);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    pointer-events: none;
  }

  nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

   .hero h1 {
     font-size: 2rem;
   }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-floating {
    bottom: 1rem;
    right: 1rem;
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
  }
}