:root {
        --primary: #6366f1;
        --primary-dark: #4f46e5;
        --primary-light: #818cf8;
        --secondary: #0f172a;
        --accent: #06b6d4;
        --accent-light: #67e8f9;
        --success: #10b981;
        --warning: #f59e0b;
        --danger: #ef4444;
        --light: #f8fafc;
        --dark: #0f172a;
        --gray-50: #f8fafc;
        --gray-100: #f1f5f9;
        --gray-200: #e2e8f0;
        --gray-300: #cbd5e1;
        --gray-400: #94a3b8;
        --gray-500: #64748b;
        --gray-600: #475569;
        --gray-700: #334155;
        --gray-800: #1e293b;
        --gray-900: #0f172a;
        --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
        --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
        --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
        --radius-sm: 0.5rem;
        --radius-md: 0.75rem;
        --radius-lg: 1rem;
        --radius-xl: 1.5rem;
        --radius-2xl: 2rem;
        --transition-fast: 0.15s ease;
        --transition-base: 0.3s ease;
        --transition-slow: 0.5s ease;
      }

      * { margin: 0; padding: 0; box-sizing: border-box; }
      html { scroll-behavior: smooth; }

      body {
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        color: var(--gray-700);
        background-color: #ffffff;
        line-height: 1.6;
        overflow-x: hidden;
      }

      h1, h2, h3, h4, h5, h6 {
        font-family: 'Playfair Display', serif;
        font-weight: 700;
        color: var(--gray-900);
        line-height: 1.2;
      }

      /* ===== NAVBAR ===== */
      .navbar {
        padding: 1rem 0;
        transition: all var(--transition-base);
        z-index: 1030;
      }
      .navbar.scrolled {
        background: rgba(255, 255, 255, 0.95) !important;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: var(--shadow-md);
        padding: 0.75rem 0;
      }
      .navbar.scrolled .navbar-brand,
      .navbar.scrolled .nav-link { color: var(--gray-900) !important; }
      .navbar.scrolled .navbar-toggler-icon { filter: invert(1); }
      .navbar-brand {
        font-family: 'Playfair Display', serif;
        font-size: 1.75rem;
        font-weight: 800;
        color: #ffffff !important;
        letter-spacing: -0.02em;
        transition: color var(--transition-base);
      }
      .navbar-brand span {
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
      }
      .nav-link {
        font-weight: 500;
        font-size: 0.95rem;
        color: rgba(255, 255, 255, 0.85) !important;
        padding: 0.5rem 1rem !important;
        border-radius: var(--radius-md);
        transition: all var(--transition-base);
        position: relative;
      }
      .nav-link:hover, .nav-link.active {
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.1);
      }
      .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--gradient-primary);
        transition: all var(--transition-base);
        transform: translateX(-50%);
        border-radius: 2px;
      }
      .nav-link:hover::after, .nav-link.active::after { width: 60%; }
      .btn-nav {
        background: var(--gradient-primary);
        border: none;
        color: white;
        font-weight: 600;
        padding: 0.6rem 1.5rem;
        border-radius: var(--radius-lg);
        transition: all var(--transition-base);
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
      }
      .btn-nav:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
        color: white;
      }
      .navbar-toggler { border: none; padding: 0.5rem; }
      .navbar-toggler:focus { box-shadow: none; }

      /* ===== HERO SECTION ===== */
      .hero-section {
        position: relative;
        min-height: 100vh;
        display: flex;
        align-items: center;
        background: var(--gradient-dark);
        overflow: hidden;
        padding-top: 80px;
      }
      .hero-section::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background: 
          radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
          radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
          radial-gradient(ellipse at 50% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
        pointer-events: none;
      }
      .hero-grid {
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background-image: 
          linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
          linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
        background-size: 60px 60px;
        pointer-events: none;
      }
      .hero-content { position: relative; z-index: 2; }
      .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        color: var(--accent-light);
        padding: 0.5rem 1.25rem;
        border-radius: 100px;
        font-size: 0.875rem;
        font-weight: 500;
        margin-bottom: 2rem;
        animation: fadeInDown 0.8s ease;
      }
      .hero-badge i { color: var(--accent); }
      .hero-title {
        font-size: clamp(2.5rem, 5vw, 4.5rem);
        font-weight: 800;
        color: #ffffff;
        line-height: 1.1;
        margin-bottom: 1.5rem;
        animation: fadeInUp 0.8s ease 0.2s both;
      }
      .hero-title .gradient-text {
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
      }
      .hero-subtitle {
        font-size: clamp(1rem, 2vw, 1.25rem);
        color: rgba(255, 255, 255, 0.7);
        max-width: 600px;
        margin-bottom: 2.5rem;
        line-height: 1.7;
        animation: fadeInUp 0.8s ease 0.4s both;
      }
      .hero-buttons {
        display: flex;
        gap: 1rem;
        flex-wrap: wrap;
        animation: fadeInUp 0.8s ease 0.6s both;
      }
      .btn-hero-primary {
        background: var(--gradient-primary);
        border: none;
        color: white;
        font-weight: 600;
        padding: 1rem 2.5rem;
        border-radius: var(--radius-lg);
        font-size: 1rem;
        transition: all var(--transition-base);
        box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
        position: relative;
        overflow: hidden;
      }
      .btn-hero-primary::before {
        content: '';
        position: absolute;
        top: 0; left: -100%;
        width: 100%; height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
        transition: left 0.5s ease;
      }
      .btn-hero-primary:hover::before { left: 100%; }
      .btn-hero-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
        color: white;
      }
      .btn-hero-outline {
        background: transparent;
        border: 2px solid rgba(255, 255, 255, 0.3);
        color: white;
        font-weight: 600;
        padding: 1rem 2.5rem;
        border-radius: var(--radius-lg);
        font-size: 1rem;
        transition: all var(--transition-base);
      }
      .btn-hero-outline:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.5);
        transform: translateY(-3px);
        color: white;
      }
      .hero-stats {
        display: flex;
        gap: 3rem;
        margin-top: 4rem;
        animation: fadeInUp 0.8s ease 0.8s both;
      }
      .hero-stat { text-align: center; }
      .hero-stat-number {
        font-family: 'Playfair Display', serif;
        font-size: 2rem;
        font-weight: 800;
        color: white;
        display: block;
      }
      .hero-stat-label {
        font-size: 0.875rem;
        color: rgba(255, 255, 255, 0.6);
        font-weight: 500;
      }
      .hero-visual {
        position: relative;
        animation: fadeInRight 1s ease 0.5s both;
      }
      .hero-card {
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-xl);
        padding: 2rem;
        position: relative;
        overflow: hidden;
      }
      .hero-card::before {
        content: '';
        position: absolute;
        top: -50%; left: -50%;
        width: 200%; height: 200%;
        background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
        animation: rotate 20s linear infinite;
      }
      .hero-card-content { position: relative; z-index: 1; }
      .floating-card {
        position: absolute;
        background: rgba(255, 255, 255, 0.95);
        border-radius: var(--radius-lg);
        padding: 1rem 1.5rem;
        box-shadow: var(--shadow-xl);
        animation: float 6s ease-in-out infinite;
      }
      .floating-card-1 { top: 10%; right: -10%; animation-delay: 0s; }
      .floating-card-2 { bottom: 20%; left: -10%; animation-delay: 2s; }
      .floating-card-3 { top: 50%; right: -5%; animation-delay: 4s; }

      /* ===== SECTIONS COMMON ===== */
      .section-padding { padding: 6rem 0; }
      .section-header {
        text-align: center;
        max-width: 700px;
        margin: 0 auto 4rem;
      }
      .section-label {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        font-weight: 700;
        font-size: 0.875rem;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        margin-bottom: 1rem;
      }
      .section-title { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
      .section-subtitle {
        font-size: 1.125rem;
        color: var(--gray-500);
        line-height: 1.7;
      }

      /* ===== FEATURES SECTION ===== */
      .features-section { background: var(--gray-50); }
      .feature-card {
        background: white;
        border-radius: var(--radius-xl);
        padding: 2.5rem;
        border: 1px solid var(--gray-100);
        transition: all var(--transition-base);
        height: 100%;
        position: relative;
        overflow: hidden;
      }
      .feature-card::before {
        content: '';
        position: absolute;
        top: 0; left: 0;
        width: 100%; height: 4px;
        background: var(--gradient-primary);
        transform: scaleX(0);
        transition: transform var(--transition-base);
      }
      .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
        border-color: transparent;
      }
      .feature-card:hover::before { transform: scaleX(1); }
      .feature-icon {
        width: 64px; height: 64px;
        border-radius: var(--radius-lg);
        background: var(--gradient-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.5rem;
        font-size: 1.75rem;
        color: white;
        transition: transform var(--transition-base);
      }
      .feature-card:hover .feature-icon { transform: scale(1.1) rotate(5deg); }
      .feature-card h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }
      .feature-card p {
        color: var(--gray-500);
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 0;
      }

      /* ===== COURSES SECTION ===== */
      .courses-section { background: white; }
      .course-card {
        background: white;
        border-radius: var(--radius-xl);
        overflow: hidden;
        border: 1px solid var(--gray-100);
        transition: all var(--transition-base);
        height: 100%;
        display: flex;
        flex-direction: column;
      }
      .course-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
        border-color: transparent;
      }
      .course-image {
        position: relative;
        height: 220px;
        overflow: hidden;
      }
      .course-image img {
        width: 100%; height: 100%;
        object-fit: cover;
        transition: transform var(--transition-slow);
      }
      .course-card:hover .course-image img { transform: scale(1.1); }
      .course-badge {
        position: absolute;
        top: 1rem; left: 1rem;
        background: var(--gradient-primary);
        color: white;
        padding: 0.35rem 0.75rem;
        border-radius: 100px;
        font-size: 0.75rem;
        font-weight: 600;
        z-index: 2;
      }
      .course-badge-popular { background: linear-gradient(135deg, #f59e0b, #ef4444); }
      .course-badge-new { background: linear-gradient(135deg, #10b981, #06b6d4); }
      .course-content {
        padding: 1.5rem;
        flex: 1;
        display: flex;
        flex-direction: column;
      }
      .course-category {
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--primary);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 0.5rem;
      }
      .course-title {
        font-size: 1.15rem;
        margin-bottom: 0.75rem;
        line-height: 1.3;
      }
      .course-description {
        color: var(--gray-500);
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 1rem;
        flex: 1;
      }
      .course-meta {
        display: flex;
        align-items: center;
        gap: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--gray-100);
        font-size: 0.85rem;
        color: var(--gray-500);
      }
      .course-meta i { color: var(--primary); margin-right: 0.25rem; }
      .course-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1rem 1.5rem;
        background: var(--gray-50);
        border-top: 1px solid var(--gray-100);
      }
      .course-price {
        font-family: 'Playfair Display', serif;
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--gray-900);
      }
      .course-price .original {
        font-size: 1rem;
        color: var(--gray-400);
        text-decoration: line-through;
        margin-left: 0.5rem;
        font-weight: 400;
      }
      .btn-course {
        background: var(--gradient-primary);
        border: none;
        color: white;
        font-weight: 600;
        padding: 0.6rem 1.25rem;
        border-radius: var(--radius-lg);
        font-size: 0.875rem;
        transition: all var(--transition-base);
      }
      .btn-course:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
        color: white;
      }

      /* ===== STATISTICS SECTION ===== */
      .stats-section {
        background: var(--gradient-dark);
        position: relative;
        overflow: hidden;
      }
      .stats-section::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background: 
          radial-gradient(ellipse at 30% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
          radial-gradient(ellipse at 70% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
      }
      .stat-item {
        text-align: center;
        padding: 2rem;
        position: relative;
        z-index: 1;
      }
      .stat-icon {
        width: 80px; height: 80px;
        border-radius: var(--radius-xl);
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        font-size: 2rem;
        color: var(--accent-light);
        transition: all var(--transition-base);
      }
      .stat-item:hover .stat-icon {
        background: var(--gradient-primary);
        transform: scale(1.1);
        color: white;
      }
      .stat-number {
        font-family: 'Playfair Display', serif;
        font-size: 3rem;
        font-weight: 800;
        color: white;
        line-height: 1;
        margin-bottom: 0.5rem;
      }
      .stat-label {
        color: rgba(255, 255, 255, 0.7);
        font-size: 1rem;
        font-weight: 500;
      }

      /* ===== TESTIMONIALS SECTION ===== */
      .testimonials-section { background: var(--gray-50); }
      .testimonial-card {
        background: white;
        border-radius: var(--radius-xl);
        padding: 2.5rem;
        border: 1px solid var(--gray-100);
        transition: all var(--transition-base);
        height: 100%;
        position: relative;
      }
      .testimonial-card::before {
        content: '"';
        position: absolute;
        top: 1rem; right: 2rem;
        font-family: 'Playfair Display', serif;
        font-size: 6rem;
        color: var(--gray-100);
        line-height: 1;
        pointer-events: none;
      }
      .testimonial-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-lg);
      }
      .testimonial-stars {
        color: var(--warning);
        margin-bottom: 1rem;
        font-size: 1rem;
      }
      .testimonial-text {
        font-size: 1rem;
        line-height: 1.7;
        color: var(--gray-600);
        margin-bottom: 1.5rem;
        font-style: italic;
      }
      .testimonial-author {
        display: flex;
        align-items: center;
        gap: 1rem;
      }
      .testimonial-avatar {
        width: 50px; height: 50px;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--gray-100);
      }
      .testimonial-info h5 {
        font-size: 1rem;
        margin-bottom: 0.25rem;
        font-family: 'Inter', sans-serif;
        font-weight: 700;
      }
      .testimonial-info span {
        font-size: 0.85rem;
        color: var(--gray-500);
      }

      /* ===== FAQ SECTION ===== */
      .faq-section { background: white; }
      .accordion-item {
        border: 1px solid var(--gray-200);
        border-radius: var(--radius-lg);
        margin-bottom: 1rem;
        overflow: hidden;
        background: white;
      }
      .accordion-button {
        padding: 1.5rem;
        font-weight: 600;
        color: var(--gray-800);
        background: white;
        border: none;
        box-shadow: none;
        font-size: 1.05rem;
      }
      .accordion-button:not(.collapsed) {
        background: var(--gray-50);
        color: var(--primary);
        box-shadow: none;
      }
      .accordion-button:focus { box-shadow: none; border-color: var(--gray-200); }
      .accordion-button::after { background-size: 1.25rem; transition: transform var(--transition-base); }
      .accordion-body {
        padding: 0 1.5rem 1.5rem;
        color: var(--gray-600);
        line-height: 1.7;
      }

      /* ===== CTA SECTIONS ===== */
      .cta-section {
        background: var(--gradient-primary);
        position: relative;
        overflow: hidden;
      }
      .cta-section::before {
        content: '';
        position: absolute;
        top: -50%; left: -50%;
        width: 200%; height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
        animation: rotate 30s linear infinite;
      }
      .cta-content {
        position: relative;
        z-index: 1;
        text-align: center;
      }
      .cta-title {
        font-size: clamp(2rem, 4vw, 3rem);
        color: white;
        margin-bottom: 1rem;
      }
      .cta-subtitle {
        color: rgba(255, 255, 255, 0.85);
        font-size: 1.125rem;
        max-width: 600px;
        margin: 0 auto 2rem;
      }
      .btn-cta {
        background: white;
        color: var(--primary);
        font-weight: 700;
        padding: 1rem 2.5rem;
        border-radius: var(--radius-lg);
        font-size: 1rem;
        border: none;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);
      }
      .btn-cta:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        color: var(--primary-dark);
      }

      /* ===== FOOTER ===== */
      .footer {
        background: var(--gray-900);
        color: var(--gray-400);
        padding-top: 5rem;
      }
      .footer-brand {
        font-family: 'Playfair Display', serif;
        font-size: 2rem;
        font-weight: 800;
        color: white;
        margin-bottom: 1rem;
        display: inline-block;
      }
      .footer-brand span {
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
      }
      .footer-description {
        color: var(--gray-500);
        line-height: 1.7;
        margin-bottom: 1.5rem;
        max-width: 300px;
      }
      .footer-social {
        display: flex;
        gap: 0.75rem;
      }
      .footer-social a {
        width: 40px; height: 40px;
        border-radius: var(--radius-md);
        background: var(--gray-800);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--gray-400);
        transition: all var(--transition-base);
        text-decoration: none;
      }
      .footer-social a:hover {
        background: var(--gradient-primary);
        color: white;
        transform: translateY(-3px);
      }
      .footer-title {
        color: white;
        font-size: 1.1rem;
        font-weight: 700;
        margin-bottom: 1.5rem;
        font-family: 'Inter', sans-serif;
      }
      .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
      }
      .footer-links li { margin-bottom: 0.75rem; }
      .footer-links a {
        color: var(--gray-500);
        text-decoration: none;
        transition: all var(--transition-base);
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
      }
      .footer-links a:hover {
        color: var(--primary-light);
        transform: translateX(5px);
      }
      .footer-links a::before {
        content: '>';
        opacity: 0;
        transition: opacity var(--transition-base);
      }
      .footer-links a:hover::before { opacity: 1; }
      .footer-contact-item {
        display: flex;
        align-items: flex-start;
        gap: 0.75rem;
        margin-bottom: 1rem;
        color: var(--gray-500);
      }
      .footer-contact-item i {
        color: var(--primary-light);
        margin-top: 0.25rem;
        flex-shrink: 0;
      }
      .footer-bottom {
        border-top: 1px solid var(--gray-800);
        padding: 2rem 0;
        margin-top: 3rem;
        text-align: center;
      }
      .footer-bottom p {
        margin: 0;
        color: var(--gray-600);
        font-size: 0.9rem;
      }

      /* ===== ANIMATIONS ===== */
      @keyframes fadeInUp {
        from { opacity: 0; transform: translateY(30px); }
        to { opacity: 1; transform: translateY(0); }
      }
      @keyframes fadeInDown {
        from { opacity: 0; transform: translateY(-20px); }
        to { opacity: 1; transform: translateY(0); }
      }
      @keyframes fadeInRight {
        from { opacity: 0; transform: translateX(30px); }
        to { opacity: 1; transform: translateX(0); }
      }
      @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-20px); }
      }
      @keyframes rotate {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
      }

      /* ===== SCROLL REVEAL ===== */
      .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.8s ease;
      }
      .reveal.active {
        opacity: 1;
        transform: translateY(0);
      }

      /* ===== BACK TO TOP ===== */
      .back-to-top {
        position: fixed;
        bottom: 2rem; right: 2rem;
        width: 50px; height: 50px;
        border-radius: 50%;
        background: var(--gradient-primary);
        color: white;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 999;
        box-shadow: var(--shadow-lg);
      }
      .back-to-top.visible {
        opacity: 1;
        visibility: visible;
      }
      .back-to-top:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-xl);
      }

      /* ===== CAROUSEL REDESIGN ===== */
      #myCarousel { display: none; }

      /* ===== RESPONSIVE ===== */
      @media (max-width: 991.98px) {
        .navbar-collapse {
          background: rgba(15, 23, 42, 0.98);
          backdrop-filter: blur(20px);
          padding: 1rem;
          border-radius: var(--radius-lg);
          margin-top: 1rem;
        }
        .navbar.scrolled .navbar-collapse { background: rgba(255, 255, 255, 0.98); }
        .hero-stats { gap: 2rem; }
        .section-padding { padding: 4rem 0; }
      }
      @media (max-width: 767.98px) {
        .hero-section {
          padding-top: 100px;
          text-align: center;
        }
        .hero-subtitle { margin-left: auto; margin-right: auto; }
        .hero-buttons { justify-content: center; }
        .hero-stats { justify-content: center; gap: 1.5rem; }
        .stat-number { font-size: 2rem; }
        .floating-card { display: none; }
      }
      @media (max-width: 575.98px) {
        .hero-title { font-size: 2.2rem; }
        .btn-hero-primary, .btn-hero-outline { width: 100%; text-align: center; }
        .section-title { font-size: 1.75rem; }
      }

      /* ===== CUSTOM SCROLLBAR ===== */
      ::-webkit-scrollbar { width: 8px; }
      ::-webkit-scrollbar-track { background: var(--gray-100); }
      ::-webkit-scrollbar-thumb { background: var(--gray-400); border-radius: 4px; }
      ::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }