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

    :root {
      --neon-green: #39ff14;
      --dark-bg: #000000;
      --text-gray: #b5b5b5;
      --text-light: #f5f5f5;
      --card-border: rgba(57, 255, 20, 0.25);
      --glow-shadow: 0 0 8px rgba(57, 255, 20, 0.3), 0 4px 20px rgba(0, 0, 0, 0.8);
    }

    body {
      font-family: 'Inter', sans-serif !important;
      background: var(--dark-bg);
      color: var(--text-light);
      overflow-x: hidden;
      position: relative;
    }

    /* Three.js Canvas */
    #canvas-container {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
    }

    /* Hero Section */
    .hero {
      position: relative;
      z-index: 2;
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding: 0 4rem;
      max-width: 1400px;
      margin: 0 auto;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
      width: 100%;
    }

    .hero-content {
      position: relative;
      z-index: 3;
    }

    .hero-badge {
      display: inline-block;
      padding: 0.5rem 1.2rem;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(10px);
      border: 1px solid var(--neon-green);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.9rem;
      font-weight: 500;
      margin-bottom: 1.5rem;
    }

    .hero-title {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 1.5rem;
      background: linear-gradient(135deg, #ffffff 30%, var(--neon-green) 80%);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
    }

    .hero-subtitle {
      font-size: 1.1rem;
      color: var(--text-gray);
      margin-bottom: 2rem;
      line-height: 1.6;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.75rem;
      margin: 1.5rem 0;
      max-width: 550px;
    }

    .feature-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.5rem 0.75rem;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 8px;
    }

    .feature-icon {
      width: 22px;
      height: 22px;
      background: var(--neon-green);
      border-radius: 5px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #000;
      font-weight: bold;
      font-size: 13px;
    }

    .feature-text {
      color: var(--text-light);
      font-size: 0.9rem;
      font-weight: 500;
    }

    .hero-cta-group {
      display: flex;
      gap: 1rem;
      align-items: center;
    }

    .primary-cta {
      padding: 0.9rem 2rem;
      background: var(--neon-green);
      color: #000;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      box-shadow: 0 0 25px rgba(57, 255, 20, 0.4);
    }

    .primary-cta:hover {
      box-shadow: 0 0 45px rgba(57, 255, 20, 0.7);
      transform: translateY(-2px);
    }

    .secondary-cta {
      padding: 0.9rem 2rem;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(10px);
      border: 1.5px solid var(--neon-green);
      color: var(--neon-green);
      font-weight: 600;
      font-size: 1rem;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
    }

    .secondary-cta:hover {
      background: rgba(57, 255, 20, 0.15);
      box-shadow: 0 0 25px rgba(57, 255, 20, 0.3);
    }

    .hero-stats {
      display: flex;
      gap: 2rem;
      margin-top: 3rem;
    }

    .stat-item {
      display: flex;
      flex-direction: column;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--neon-green);
      text-shadow: 0 0 20px rgba(57, 255, 20, 0.6);
    }

    .stat-label {
      color: var(--text-gray);
      font-size: 0.8rem;
      margin-top: 0.25rem;
    }

    .hero-visual {
      position: relative;
      z-index: 3;
      height: 500px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    #shape-canvas {
      width: 100%;
      height: 100%;
      position: absolute;
      top: 0;
      left: 0;
    }

    .floating-card {
      position: absolute;
      padding: 0.8rem 1.2rem;
      background: rgba(0, 0, 0, 0.8);
      backdrop-filter: blur(15px);
      border: 1px solid var(--neon-green);
      border-radius: 12px;
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.2);
      z-index: 5;
      animation: float 4s ease-in-out infinite;
    }

    .card-1 { top: 15%; left: -10px; }
    .card-2 { bottom: 20%; right: -10px; animation-delay: 1s; }
    .card-3 { bottom: 35%; left: -20px; animation-delay: 2s; }

    @keyframes float {
      0%, 100% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
    }

    .card-content {
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }

    .card-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--neon-green), #00aa00);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      color: #000;
    }

    .card-info h4 {
      font-size: 0.9rem;
      color: var(--text-light);
      margin-bottom: 0.2rem;
    }

    .card-info p {
      font-size: 0.75rem;
      color: var(--neon-green);
    }

    .media-container {
      position: relative;
      width: 100%;
      height: 300px;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 0 40px rgba(57, 255, 20, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 4;
    }

    .play-button {
      width: 70px;
      height: 70px;
      background: var(--neon-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.5);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { box-shadow: 0 0 30px rgba(57, 255, 20, 0.5); }
      50% { box-shadow: 0 0 50px rgba(57, 255, 20, 0.8); }
    }

    .play-button:hover {
      transform: scale(1.1);
    }

    .play-button svg {
      width: 30px;
      height: 30px;
      fill: #000;
      margin-left: 4px;
    }

    .media-text {
      position: absolute;
      bottom: 20px;
      left: 20px;
      color: var(--text-light);
      font-weight: 600;
    }

    /* ============================================ */
    /* SECTION STYLES */
    /* ============================================ */
    section {
      position: relative;
      z-index: 2;
      padding: 6rem 4rem;
      max-width: 1400px;
      margin: 0 auto;
    }

    .section-header {
      text-align: center;
      margin-bottom: 4rem;
    }

    .section-badge {
      display: inline-block;
      padding: 0.4rem 1.5rem;
      background: rgba(57, 255, 20, 0.1);
      border: 1px solid var(--card-border);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.85rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 1rem;
    }

    .section-title {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1rem;
      background: linear-gradient(135deg, #ffffff 30%, var(--neon-green) 80%);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
    }

    .section-subtitle {
      font-size: 1.2rem;
      color: var(--text-gray);
      max-width: 700px;
      margin: 0 auto;
    }

    /* ============================================ */
    /* PROBLEM → SOLUTION SECTION */
    /* ============================================ */
    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 0.2fr 1fr;
      gap: 0;
      align-items: stretch;
      margin-top: 3rem;
    }

    .problem-side {
      background: linear-gradient(135deg, rgba(255, 50, 50, 0.05), rgba(255, 0, 0, 0.02));
      border: 1px solid rgba(255, 50, 50, 0.3);
      border-radius: 24px;
      padding: 3rem 2.5rem;
      backdrop-filter: blur(10px);
      position: relative;
    }

    .problem-side::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #ff3333, #ff6666, #ff3333);
    }

    .solution-side {
      background: linear-gradient(135deg, rgba(57, 255, 20, 0.05), rgba(57, 255, 20, 0.02));
      border: 1px solid var(--card-border);
      border-radius: 24px;
      padding: 3rem 2.5rem;
      backdrop-filter: blur(10px);
      position: relative;
    }

    .solution-side::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--neon-green), #00ff88, var(--neon-green));
    }

    .side-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }

    .side-icon {
      width: 60px;
      height: 60px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
    }

    .problem-side .side-icon {
      background: rgba(255, 50, 50, 0.15);
      border: 1px solid rgba(255, 50, 50, 0.5);
    }

    .solution-side .side-icon {
      background: rgba(57, 255, 20, 0.15);
      border: 1px solid var(--neon-green);
    }

    .side-title {
      font-size: 2rem;
      font-weight: 700;
    }

    .problem-side .side-title {
      color: #ff6666;
    }

    .solution-side .side-title {
      color: var(--neon-green);
    }

    .problem-item, .solution-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding: 1.2rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .problem-item:last-child, .solution-item:last-child {
      border-bottom: none;
    }

    .problem-icon {
      width: 28px;
      height: 28px;
      background: rgba(255, 50, 50, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ff6666;
      font-size: 1.2rem;
      font-weight: bold;
      flex-shrink: 0;
    }

    .solution-icon {
      width: 28px;
      height: 28px;
      background: rgba(57, 255, 20, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-green);
      font-size: 1.2rem;
      font-weight: bold;
      flex-shrink: 0;
    }

    .problem-content h4, .solution-content h4 {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 0.3rem;
      color: var(--text-light);
    }

    .problem-content p, .solution-content p {
      font-size: 0.95rem;
      color: var(--text-gray);
      line-height: 1.5;
    }

    .vs-divider {
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

    .vs-circle {
      width: 70px;
      height: 70px;
      background: rgba(0, 0, 0, 0.8);
      border: 2px solid var(--neon-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--neon-green);
      box-shadow: 0 0 40px rgba(57, 255, 20, 0.4);
      backdrop-filter: blur(10px);
      z-index: 10;
    }

    /* ============================================ */
    /* COURSE HIGHLIGHTS SECTION */
    /* ============================================ */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .highlight-card {
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 2rem 1.5rem;
      text-align: center;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .highlight-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .highlight-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 0 40px rgba(57, 255, 20, 0.2);
      border-color: var(--neon-green);
    }

    .highlight-card:hover::before {
      opacity: 1;
    }

    .highlight-icon {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, rgba(57, 255, 20, 0.2), rgba(57, 255, 20, 0.05));
      border: 1px solid var(--card-border);
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 1.5rem;
      font-size: 2rem;
    }

    .highlight-card h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-light);
    }

    .highlight-card p {
      font-size: 0.9rem;
      color: var(--text-gray);
      line-height: 1.5;
    }

    .highlight-tag {
      display: inline-block;
      margin-top: 1rem;
      padding: 0.25rem 1rem;
      background: rgba(57, 255, 20, 0.1);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.75rem;
      font-weight: 600;
    }

    /* ============================================ */
    /* WHY CHOOSE US SECTION */
    /* ============================================ */
    .why-us-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
    }

    .why-us-content {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }

    .why-us-card {
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 1.5rem;
      transition: all 0.3s ease;
    }

    .why-us-card:hover {
      border-color: var(--neon-green);
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.15);
    }

    .why-us-icon {
      width: 50px;
      height: 50px;
      background: rgba(57, 255, 20, 0.1);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }

    .why-us-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--text-light);
    }

    .why-us-card p {
      font-size: 0.9rem;
      color: var(--text-gray);
      line-height: 1.5;
    }

    .why-us-visual {
      position: relative;
      height: 400px;
    }

    .stats-card {
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(15px);
      border: 1px solid var(--neon-green);
      border-radius: 20px;
      padding: 2rem;
      text-align: center;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .stat-box {
      padding: 1rem;
    }

    .stat-box .number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--neon-green);
      margin-bottom: 0.25rem;
    }

    .stat-box .label {
      font-size: 0.85rem;
      color: var(--text-gray);
    }

    /* Base styles (desktop first) */
.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-us-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.why-us-card {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.why-us-card:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 30px rgba(57, 255, 20, 0.15);
  transform: translateY(-5px);
}

.why-us-icon {
  width: 50px;
  height: 50px;
  background: rgba(57, 255, 20, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.why-us-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.why-us-card p {
  font-size: 0.9rem;
  color: var(--text-gray);
  line-height: 1.5;
}

.why-us-visual {
  position: relative;
  height: 400px;
}

.stats-card {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(15px);
  border: 1px solid var(--neon-green);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.stat-box {
  padding: 1rem;
}

.stat-box .number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--neon-green);
  margin-bottom: 0.25rem;
}

.stat-box .label {
  font-size: 0.85rem;
  color: var(--text-gray);
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  .why-us-grid {
    gap: 2.5rem;
  }
  
  .why-us-content {
    gap: 1rem;
  }
  
  .why-us-card {
    padding: 1.25rem;
  }
  
  .why-us-icon {
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
  }
  
  .why-us-card h3 {
    font-size: 1.1rem;
  }
  
  .why-us-card p {
    font-size: 0.85rem;
  }
  
  .stats-card {
    padding: 1.5rem;
  }
  
  .stat-box .number {
    font-size: 2rem;
  }
}

/* Mobile landscape (640px - 768px) */
@media (max-width: 768px) {
  .why-us-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .why-us-visual {
    order: -1; /* Moves visual above content on mobile */
    height: 350px;
  }
  
  .stats-card {
    padding: 1.25rem;
  }
  
  .stats-grid {
    gap: 1rem;
  }
  
  .stat-box {
    padding: 0.75rem;
  }
  
  .stat-box .number {
    font-size: 1.75rem;
  }
}

/* Mobile portrait (below 640px) */
@media (max-width: 640px) {
  .why-us-content {
    grid-template-columns: 1fr; /* Stacks cards vertically */
    gap: 1rem;
  }
  
  .why-us-card {
    padding: 1rem;
  }
  
  .why-us-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    border-radius: 10px;
  }
  
  .why-us-card h3 {
    font-size: 1rem;
  }
  
  .why-us-card p {
    font-size: 0.8rem;
  }
  
  .why-us-visual {
    height: 300px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr; /* Stacks stats vertically */
    gap: 0.75rem;
  }
  
  .stat-box .number {
    font-size: 1.5rem;
  }
  
  .stat-box .label {
    font-size: 0.75rem;
  }
}

/* Small mobile (below 480px) */
@media (max-width: 480px) {
  .why-us-grid {
    gap: 1.5rem;
  }
  
  .why-us-visual {
    height: 250px;
  }
  
  .stats-card {
    padding: 1rem;
  }
  
  .stat-box {
    padding: 0.5rem;
  }
}

/* Optional: For devices that support hover (desktop only) */
@media (hover: hover) {
  .why-us-card:hover {
    transform: translateY(-5px);
  }
}

/* Optional: Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .why-us-card {
    transition: none;
  }
  
  .why-us-card:hover {
    transform: none;
  }
}

    /* ============================================ */
    /* COURSE CURRICULUM SECTION */
    /* ============================================ */
    .curriculum-tabs {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 3rem;
      flex-wrap: wrap;
    }

    .tab-btn {
      padding: 0.75rem 2rem;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 50px;
      color: var(--text-gray);
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .tab-btn:hover {
      border-color: var(--neon-green);
      color: var(--neon-green);
    }

    .tab-btn.active {
      background: var(--neon-green);
      color: #000;
      border-color: var(--neon-green);
      box-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
    }

    .curriculum-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .module-card {
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 1.75rem;
      transition: all 0.3s ease;
    }

    .module-card:hover {
      border-color: var(--neon-green);
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.15);
      transform: translateY(-5px);
    }

    .module-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }

    .module-number {
      width: 45px;
      height: 45px;
      background: linear-gradient(135deg, var(--neon-green), #00aa00);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      color: #000;
    }

    .module-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-light);
    }

    .module-duration {
      font-size: 0.8rem;
      color: var(--neon-green);
      margin-top: 0.25rem;
    }

    .module-topics {
      list-style: none;
      margin-bottom: 1.5rem;
    }

    .module-topics li {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.4rem 0;
      color: var(--text-gray);
      font-size: 0.9rem;
    }

    .module-topics li::before {
      content: '▹';
      color: var(--neon-green);
    }

    .module-tag {
      display: inline-block;
      padding: 0.3rem 0.8rem;
      background: rgba(57, 255, 20, 0.1);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.75rem;
      font-weight: 600;
    }

    /* Stats Banner */
    .stats-banner {
      display: flex;
      justify-content: space-around;
      margin-top: 4rem;
      padding: 2.5rem;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
    }

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

    .banner-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--neon-green);
      margin-bottom: 0.5rem;
    }

    .banner-label {
      font-size: 1rem;
      color: var(--text-gray);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .section-cta {
      text-align: center;
      margin-top: 4rem;
    }

    .cta-large {
      padding: 1.2rem 3.5rem;
      background: var(--neon-green);
      color: #000;
      font-weight: 700;
      font-size: 1.2rem;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      box-shadow: 0 0 35px rgba(57, 255, 20, 0.4);
      display: inline-block;
    }

    .cta-large:hover {
      box-shadow: 0 0 60px rgba(57, 255, 20, 0.7);
      transform: translateY(-3px);
    }

    .cta-subtext {
      margin-top: 1rem;
      color: var(--text-gray);
      font-size: 0.9rem;
    }

    /* Animation Classes */
    .fade-up {
      opacity: 0;
      transform: translateY(30px);
    }

    .fade-in {
      opacity: 0;
    }

    .slide-left {
      opacity: 0;
      transform: translateX(-50px);
    }

    .slide-right {
      opacity: 0;
      transform: translateX(50px);
    }

    /* Responsive */
    @media (max-width: 1200px) {
      .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .curriculum-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 1024px) {
      .hero { padding: 2rem; }
      .hero-grid { gap: 2rem; }
      .hero-title { font-size: 3rem; }
      
      section { padding: 4rem 2rem; }
      .section-title { font-size: 2.8rem; }
      .comparison-grid { grid-template-columns: 1fr; gap: 2rem; }
      .vs-divider { display: none; }
      .why-us-grid { grid-template-columns: 1fr; gap: 2rem; }
    }

    @media (max-width: 768px) {
      .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
      .hero-title { font-size: 2.5rem; }
      .feature-grid { grid-template-columns: 1fr; }
      .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
      .hero-cta-group { flex-direction: column; align-items: flex-start; }
      .primary-cta, .secondary-cta { width: 100%; text-align: center; }
      .hero-visual { height: 400px; }
      .floating-card { display: none; }
      
      .section-title { font-size: 2.2rem; }
      .problem-side, .solution-side { padding: 2rem 1.5rem; }
      .stats-banner { flex-direction: column; gap: 2rem; }
      .highlights-grid { grid-template-columns: 1fr; }
      .why-us-content { grid-template-columns: 1fr; }
      .curriculum-grid { grid-template-columns: 1fr; }
      .curriculum-tabs { gap: 0.5rem; }
      .tab-btn { padding: 0.5rem 1rem; font-size: 0.85rem; }
    }














     /* Three.js Canvas */
    #canvas-container {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
    }

    /* Hero Section */
    .hero {
      position: relative;
      z-index: 2;
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding: 0 4rem;
      max-width: 1400px;
      margin: 0 auto;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
      width: 100%;
    }

    .hero-content {
      position: relative;
      z-index: 3;
    }

    .hero-badge {
      display: inline-block;
      padding: 0.5rem 1.2rem;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(10px);
      border: 1px solid var(--neon-green);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.9rem;
      font-weight: 500;
      margin-bottom: 1.5rem;
    }

    .hero-title {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 1.5rem;
      background: linear-gradient(135deg, #ffffff 30%, var(--neon-green) 80%);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
      text-shadow: 0 0 30px rgba(0,0,0,0.5);
    }

    .hero-subtitle {
      font-size: 1.1rem;
      color: var(--text-gray);
      margin-bottom: 2rem;
      line-height: 1.6;
      text-shadow: 0 0 20px rgba(0,0,0,0.8);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.75rem;
      margin: 1.5rem 0;
      max-width: 550px;
    }

    .feature-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.5rem 0.75rem;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 8px;
    }

    .feature-icon {
      width: 22px;
      height: 22px;
      background: var(--neon-green);
      border-radius: 5px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #000;
      font-weight: bold;
      font-size: 13px;
      box-shadow: 0 0 15px rgba(57, 255, 20, 0.5);
    }

    .feature-text {
      color: var(--text-light);
      font-size: 0.9rem;
      font-weight: 500;
    }

    .hero-cta-group {
      display: flex;
      gap: 1rem;
      align-items: center;
    }

    .primary-cta {
      padding: 0.9rem 2rem;
      background: var(--neon-green);
      color: #000;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      box-shadow: 0 0 25px rgba(57, 255, 20, 0.4);
      border: 1px solid var(--neon-green);
    }

    .primary-cta:hover {
      box-shadow: 0 0 45px rgba(57, 255, 20, 0.7);
      transform: translateY(-2px);
      background: #4aff1a;
    }

    .secondary-cta {
      padding: 0.9rem 2rem;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(10px);
      border: 1.5px solid var(--neon-green);
      color: var(--neon-green);
      font-weight: 600;
      font-size: 1rem;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
    }

    .secondary-cta:hover {
      background: rgba(57, 255, 20, 0.15);
      box-shadow: 0 0 25px rgba(57, 255, 20, 0.3);
      transform: translateY(-2px);
    }

    .hero-stats {
      display: flex;
      gap: 2rem;
      margin-top: 3rem;
    }

    .stat-item {
      display: flex;
      flex-direction: column;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--neon-green);
      text-shadow: 0 0 20px rgba(57, 255, 20, 0.6);
    }

    .stat-label {
      color: var(--text-gray);
      font-size: 0.8rem;
      margin-top: 0.25rem;
      text-shadow: 0 0 10px rgba(0,0,0,0.8);
    }

    /* Right Side Visual */
    .hero-visual {
      position: relative;
      z-index: 3;
      height: 500px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    #shape-canvas {
      width: 100%;
      height: 100%;
      position: absolute;
      top: 0;
      left: 0;
    }

    /* Floating Cards */
    .floating-card {
      position: absolute;
      padding: 0.8rem 1.2rem;
      background: rgba(0, 0, 0, 0.8);
      backdrop-filter: blur(15px);
      border: 1px solid var(--neon-green);
      border-radius: 12px;
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.2);
      z-index: 5;
      animation: float 4s ease-in-out infinite;
    }

    .card-1 {
      top: 15%;
      left: -10px;
      animation-delay: 0s;
    }

    .card-2 {
      bottom: 20%;
      right: -10px;
      animation-delay: 1s;
    }

    .card-3 {
      bottom: 35%;
      left: -20px;
      animation-delay: 2s;
    }

    @keyframes float {
      0%, 100% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
    }

    .card-content {
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }

    .card-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--neon-green), #00aa00);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      color: #000;
      box-shadow: 0 0 20px rgba(57, 255, 20, 0.5);
    }

    .card-info h4 {
      font-size: 0.9rem;
      color: var(--text-light);
      margin-bottom: 0.2rem;
    }

    .card-info p {
      font-size: 0.75rem;
      color: var(--neon-green);
    }

    /* Video/Image Placeholder */
    .media-container {
      position: relative;
      width: 100%;
      height: 300px;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 0 40px rgba(57, 255, 20, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 4;
    }

    .play-button {
      width: 70px;
      height: 70px;
      background: var(--neon-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 0 30px rgba(57, 255, 20, 0.5);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { box-shadow: 0 0 30px rgba(57, 255, 20, 0.5); }
      50% { box-shadow: 0 0 50px rgba(57, 255, 20, 0.8); }
    }

    .play-button:hover {
      transform: scale(1.1);
      box-shadow: 0 0 60px rgba(57, 255, 20, 0.9);
    }

    .play-button svg {
      width: 30px;
      height: 30px;
      fill: #000;
      margin-left: 4px;
    }

    .media-text {
      position: absolute;
      bottom: 20px;
      left: 20px;
      color: var(--text-light);
      font-weight: 600;
      text-shadow: 0 0 20px rgba(0,0,0,0.8);
    }

    /* ============================================ */
    /* PROBLEM → SOLUTION SECTION */
    /* ============================================ */
    .problem-solution {
      position: relative;
      z-index: 2;
      padding: 6rem 4rem;
      max-width: 1400px;
      margin: 0 auto;
    }

    .section-header {
      text-align: center;
      margin-bottom: 4rem;
    }

    .section-badge {
      display: inline-block;
      padding: 0.4rem 1.5rem;
      background: rgba(57, 255, 20, 0.1);
      border: 1px solid var(--card-border);
      border-radius: 50px;
      color: var(--neon-green);
      font-size: 0.85rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 1rem;
    }

    .section-title {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1rem;
      background: linear-gradient(135deg, #ffffff 30%, var(--neon-green) 80%);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
    }

    .section-subtitle {
      font-size: 1.2rem;
      color: var(--text-gray);
      max-width: 700px;
      margin: 0 auto;
    }

    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 0.2fr 1fr;
      gap: 0;
      align-items: stretch;
      margin-top: 3rem;
    }

    /* Problem Side */
    .problem-side {
      background: linear-gradient(135deg, rgba(255, 50, 50, 0.05), rgba(255, 0, 0, 0.02));
      border: 1px solid rgba(255, 50, 50, 0.3);
      border-radius: 24px;
      padding: 3rem 2.5rem;
      backdrop-filter: blur(10px);
      position: relative;
      overflow: hidden;
    }

    .problem-side::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #ff3333, #ff6666, #ff3333);
    }

    .side-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }

    .side-icon {
      width: 60px;
      height: 60px;
      background: rgba(255, 50, 50, 0.15);
      border: 1px solid rgba(255, 50, 50, 0.5);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
    }

    .side-title {
      font-size: 2rem;
      font-weight: 700;
      color: #ff6666;
      text-shadow: 0 0 20px rgba(255, 50, 50, 0.3);
    }

    .problem-list {
      list-style: none;
    }

    .problem-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding: 1.2rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .problem-item:last-child {
      border-bottom: none;
    }

    .problem-icon {
      width: 28px;
      height: 28px;
      background: rgba(255, 50, 50, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ff6666;
      font-size: 1.2rem;
      font-weight: bold;
      flex-shrink: 0;
    }

    .problem-content h4 {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 0.3rem;
      color: var(--text-light);
    }

    .problem-content p {
      font-size: 0.95rem;
      color: var(--text-gray);
      line-height: 1.5;
    }

    /* VS Divider */
    .vs-divider {
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

    .vs-circle {
      width: 70px;
      height: 70px;
      background: rgba(0, 0, 0, 0.8);
      border: 2px solid var(--neon-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--neon-green);
      box-shadow: 0 0 40px rgba(57, 255, 20, 0.4);
      backdrop-filter: blur(10px);
      position: relative;
      z-index: 10;
    }

    .vs-line {
      position: absolute;
      width: 2px;
      height: 60%;
      background: linear-gradient(180deg, transparent, var(--neon-green), transparent);
      top: 20%;
    }

    /* Solution Side */
    .solution-side {
      background: linear-gradient(135deg, rgba(57, 255, 20, 0.05), rgba(57, 255, 20, 0.02));
      border: 1px solid var(--card-border);
      border-radius: 24px;
      padding: 3rem 2.5rem;
      backdrop-filter: blur(10px);
      position: relative;
      overflow: hidden;
    }

    .solution-side::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--neon-green), #00ff88, var(--neon-green));
    }

    .solution-side .side-icon {
      background: rgba(57, 255, 20, 0.15);
      border-color: var(--neon-green);
    }

    .solution-side .side-title {
      color: var(--neon-green);
      text-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
    }

    .solution-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding: 1.2rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .solution-item:last-child {
      border-bottom: none;
    }

    .solution-icon {
      width: 28px;
      height: 28px;
      background: rgba(57, 255, 20, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-green);
      font-size: 1.2rem;
      font-weight: bold;
      flex-shrink: 0;
    }

    .solution-content h4 {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 0.3rem;
      color: var(--text-light);
    }

    .solution-content p {
      font-size: 0.95rem;
      color: var(--text-gray);
      line-height: 1.5;
    }

    /* Stats Banner */
    .stats-banner {
      display: flex;
      justify-content: space-around;
      margin-top: 4rem;
      padding: 2.5rem;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(10px);
      border: 1px solid var(--card-border);
      border-radius: 20px;
    }

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

    .banner-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--neon-green);
      text-shadow: 0 0 30px rgba(57, 255, 20, 0.5);
      margin-bottom: 0.5rem;
    }

    .banner-label {
      font-size: 1rem;
      color: var(--text-gray);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    /* CTA Section */
    .section-cta {
      text-align: center;
      margin-top: 4rem;
    }

    .cta-large {
      padding: 1.2rem 3.5rem;
      background: var(--neon-green);
      color: #000;
      font-weight: 700;
      font-size: 1.2rem;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      box-shadow: 0 0 35px rgba(57, 255, 20, 0.4);
      display: inline-block;
    }

    .cta-large:hover {
      box-shadow: 0 0 60px rgba(57, 255, 20, 0.7);
      transform: translateY(-3px);
      background: #4aff1a;
    }

    .cta-subtext {
      margin-top: 1rem;
      color: var(--text-gray);
      font-size: 0.9rem;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero {
        padding: 2rem;
      }
      
      .hero-grid {
        gap: 2rem;
      }
      
      .hero-title {
        font-size: 3rem;
      }

      .problem-solution {
        padding: 4rem 2rem;
      }

      .section-title {
        font-size: 2.8rem;
      }

      .comparison-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

      .vs-divider {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
      }
      
      .hero-title {
        font-size: 2.5rem;
      }
      
      .feature-grid {
        grid-template-columns: 1fr;
      }
      
      .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
      }
      
      .hero-cta-group {
        flex-direction: column;
        align-items: flex-start;
      }
      
      .primary-cta, .secondary-cta {
        width: 100%;
        text-align: center;
      }
      
      .hero-visual {
        height: 400px;
      }
      
      .floating-card {
        display: none;
      }

      .section-title {
        font-size: 2.2rem;
      }

      .problem-side, .solution-side {
        padding: 2rem 1.5rem;
      }

      .stats-banner {
        flex-direction: column;
        gap: 2rem;
      }
    }

    /* Animation Classes */
    .fade-up {
      opacity: 0;
      transform: translateY(30px);
    }

    .fade-in {
      opacity: 0;
    }

    .slide-left {
      opacity: 0;
      transform: translateX(-50px);
    }

    .slide-right {
      opacity: 0;
      transform: translateX(50px);
    }